JP5886064B2 - Medical image diagnostic system and medical image diagnostic method - Google Patents

Description

  Embodiments described herein relate generally to a medical image diagnostic system and a medical image diagnostic method.

  2. Description of the Related Art In recent years, medical image diagnostic apparatuses that collect information inside a subject and generate a medical image by imaging the inside of the subject based on the collected information have been used. Examples of the medical image diagnostic apparatus include an X-ray CT apparatus (computed tomography) and a magnetic resonance diagnostic apparatus (MRI). The generated medical image is displayed on a client terminal connected to the network, for example.

  On the other hand, the medical image is held in, for example, a single or a plurality of medical image holding devices (servers). When medical images are held in a plurality of servers, access from a client terminal may be concentrated on a specific server when browsing the images, and if the access is concentrated, the server is significantly loaded. Therefore, in the following Patent Document 1, an invention is disclosed in which the load of each server is distributed and the resources of each server can be used effectively.

JP 2010-146261 A

  However, the invention disclosed in Patent Document 1 does not give consideration to the following points.

  That is, for example, when all of a plurality of servers hold data such as the same medical image, there is a possibility that it is not possible to support a large-scale system. This is because there is no scalability. For example, when the information related to the inspection that can be held by one server is 100 inspections (maximum value), it is the maximum even if two or more servers are connected. The value is only 100 times of inspection, and no more inspections can be held. If it is necessary to increase the number of inspections that can be held, for example, additional hardware is required for all servers.

  On the other hand, if the information to be retained is distributed to each server to support the above scalability, for example, for each inspection, if the information required for the server allocated to the client terminal is not retained, another information is required. You have to access the server. Therefore, it takes time to access the necessary information accordingly, and the image display performance on the client terminal may be deteriorated.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to ensure scalability of a server device without causing deterioration of image display performance in a client terminal, and to cope with a large-scale system. To provide a medical image diagnostic system and a medical image diagnostic method.

The invention according to claim 1 is characterized in that, in the medical image diagnostic system, a client terminal that generates operation information for requesting processing of medical information is connected to the client terminal via a communication network, and is configured by a plurality of server devices. A server cluster that processes a processing request from a client, the server cluster being provided in the first server device, receiving a test data, and being provided in the first server device, the receiving unit A storage unit for storing the inspection data received in step (b), a copy data generation unit that is provided in the first server device and generates copy data based on the inspection data for transmission to the second server device. A transmission unit that transmits copy data to the second server device; a copy data holding unit that is provided in the second server device and holds copy data; A medical information processing unit that is provided in the second server device and processes examination data that is copy data held in the copy data holding unit in response to a request from the client terminal, and determines whether or not the holding period has elapsed A determination unit and a copy data deletion unit that is provided in the second server device and deletes copy data according to a determination result of the determination unit , and the first or second server device further includes a communication network. Check the patient's examination reservation information regarding the examination data, and if the examination reservation information exists, obtain the examination appointment information acquisition unit, and retain the examination data based on the obtained examination appointment information A retention period setting unit for setting a period .
According to a sixth aspect of the present invention, in the medical image diagnostic method, a function of processing examination data based on operation information transmitted from a client terminal via a communication network and transmitting a processing result to the client terminal. A master server constituting a server cluster together with a single or a plurality of slave servers, a step of acquiring new inspection data, and a step of setting a retention period of the inspection data by the master server; Determining a first server device that mainly holds inspection data from the server cluster, a step in which a master server transmits inspection data to the first server device and holds the inspection data in the first server device; A step in which the first server device generates copy data based on the inspection data; Steps and, a step of holding the copy data in the second server apparatus, the examination appointment information about the patient the second server device relating to the copy data to send a copy data to the second server apparatus constituting the server cluster If the inspection reservation information is confirmed, and if the inspection reservation information is confirmed, the step of setting the retention period of the copy data based on the inspection reservation date, and if the inspection reservation information is not confirmed, the master The step of setting the copy data retention period based on the retention period set for the inspection data by the server , the step of the second server device confirming whether the copy data retention period has elapsed, and the retention period have elapsed The second server device deleting the copy data whose retention period has passed.
According to a seventh aspect of the present invention, in the medical image diagnostic method, a function of processing examination data based on operation information transmitted from a client terminal via a communication network and transmitting a processing result to the client terminal. A master server constituting a server cluster together with a single or a plurality of slave servers, a step of acquiring new inspection data, and a step of setting a retention period of the inspection data by the master server; Determining a first server device that mainly holds inspection data from the server cluster, a step in which a master server transmits inspection data to the first server device and holds the inspection data in the first server device; A step in which the first server device confirms the presence or absence of examination reservation information about the patient relating to examination data; If the inspection reservation information is confirmed, a step for setting the retention period of the copy data based on the inspection reservation date; and if the inspection reservation information is not confirmed, the master server A step of setting a copy data retention period based on the set retention period, a step in which the first server device generates copy data based on the inspection data, and a copy data generated by the first server device Transmitting to the second server device constituting the server cluster, holding the copy data in the second server device, checking whether the second server device has passed the holding period of the copy data, The second server device deleting the copy data whose retention period has elapsed when the retention period has elapsed.

1 is a block diagram showing an overall configuration of a medical image diagnostic system in an embodiment of the present invention. It is a block diagram which shows the general internal structure of the server in embodiment of this invention. It is a block diagram which shows the internal structure of the master server in the 1st Embodiment of this invention. It is a block diagram which shows the internal structure of the primary server in the 1st Embodiment of this invention. It is a block diagram which shows the internal structure of the other server in the 1st Embodiment of this invention. It is a flowchart which shows the flow of holding | maintenance and deletion of the test | inspection data displayed on a client terminal in the case of the medical image diagnosis in the 1st Embodiment of this invention. It is a block diagram which shows the internal structure of the other server in the 2nd Embodiment of this invention. It is a flowchart which shows the flow of holding | maintenance and deletion of the test | inspection data displayed on a client terminal in the case of the medical image diagnosis in the 2nd Embodiment of this invention. It is a block diagram which shows the internal structure of the primary server in the 3rd Embodiment of this invention. It is a flowchart which shows the flow of holding | maintenance and deletion of the test | inspection data displayed on a client terminal in the case of the medical image diagnosis in the 3rd Embodiment of this invention. It is a block diagram which shows the internal structure of the other server in the 4th Embodiment of this invention. It is a flowchart which shows the flow of holding | maintenance and deletion of the test | inspection data displayed on a client terminal in the case of the medical image diagnosis in the 4th Embodiment of this invention. It is a flowchart which shows the flow of holding | maintenance and deletion of the test | inspection data displayed on a client terminal in the case of the medical image diagnosis in the 4th Embodiment of this invention. It is a block diagram which shows the internal structure of the other server in the 5th Embodiment of this invention. It is a flowchart which shows the flow of holding | maintenance and deletion of the test | inspection data displayed on a client terminal in the case of the medical image diagnosis in the 5th Embodiment of this invention. It is a block diagram which shows the internal structure of the master server in the 6th Embodiment of this invention. It is a flowchart which shows the flow in which a primary server newly produces copy data after copy data deletion in the 6th Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(First embodiment)
FIG. 1 is a block diagram showing an overall configuration of a medical image diagnostic system S according to an embodiment of the present invention. The medical image diagnostic system S includes a server cluster SC composed of a plurality of server devices, a client terminal 2 connected to the server cluster SC via a communication network N, a modality 3 for acquiring internal patient information, and a patient And a management system 4 that holds information related to the examination reservation.

  The server cluster SC is composed of one master server 1A and one or more slave servers. In the embodiment of the present invention, two slave servers (slave servers 1B and 1C) are provided. However, any number of slave servers constituting the server cluster may be connected as long as the number is one or more.

  If the scale of the server cluster SC is increased, that is, if the number of server devices constituting the medical image diagnostic system S is increased, the amount of examination data that can be held increases, so that a large-scale system can be configured accordingly. It becomes.

  In the server cluster SC, the role of one master server 1A is fixed to a specific server. As will be described later, in the embodiment of the present invention, only the master server 1A receives new inspection data. In addition, although the same clinical application is mounted on each server constituting the server cluster SC, only the master server 1 can set a period for holding examination data.

  In addition to the master server 1A, server devices such as slave servers 1B and 1C are connected to each other via the hub 5 to form a server cluster SC. Therefore, the master server 1A and slave servers 1B and 1C can exchange data held in the server cluster SC such as inspection data. The server cluster SC is connected to the communication network N via the hub 5.

  The client terminal 2 is a terminal that displays inspection data to the operator. As the client terminal 2, for example, a personal computer or a workstation can be considered. In the embodiment of the present invention, the two client terminals 2A and 2B are connected to the communication network N, but the number thereof may be singular or plural, and the number can be arbitrarily set. .

The modality 3 is the medical image diagnostic apparatus described above, and is a device that acquires (captures) internal information of a patient. Although only one modality 3 is shown in the embodiment of the present invention, the number of devices connected to the communication network N can be arbitrarily set like the client terminal 2.

  The management system 4 is constructed in a medical institution such as a hospital information management system (HIS), a radiation department information management system (RIS), or a medical image management system (PACS: Picture Archiving Communication System). Various management systems. The management system 4 manages various reservation information such as patient examination reservations and medical treatment reservations, and the medical image diagnosis system S appropriately uses the reservation information for holding examination data.

  The communication network N connects the server cluster SC (hub 5), the client terminal 2, the modality 3, and the management system 4, and enables, for example, exchange of examination data and medical image information between each other. Examples of the communication network N include a network such as a LAN (Local Area Network) and the Internet. The communication standard used in the communication network N may be any standard such as DICOM (Digital Imaging and Communication in Medicine).

  In addition, about the medical image diagnostic system S in embodiment of this invention, you may employ | adopt the structure of a thin client. That is, on the basis of operation information (processing request) sent from the client terminal 2 which is a thin client terminal to the server cluster SC via the communication network N, each server constituting the server cluster SC performs various inspections according to the application program. Process the data. Then, the processing result is transmitted again to the client terminal 2 that has issued the processing request via the communication network N.

  The operation information (processing request) transmitted from the client terminal 2 includes image processing operations performed by various application programs such as medical image rotation, enlargement, viewpoint movement, image processing parameter change, or patient information selection operation. Point to.

  Examples of the “application program” include a medical image interpretation application program, a 3D MPR, a volume rendering, a virtual endoscopy display 3D (3D) medical image display application program, a colon analysis application, and the like. Programs, cardiac analysis application programs, and the like.

  In each embodiment of the present invention described below, data used in the various application programs described above is copied and stored in each server device constituting the server cluster SC.

  FIG. 2 is a block diagram showing a general internal configuration of the server device according to the embodiment of the present invention. In the embodiment of the present invention, each server device (master server 1A, slave servers 1B, 1C) constituting the server cluster SC has different functions depending on its role. Therefore, in FIG. 2, only the functions that are basically provided as a server device (the server shown here is represented as “server device 1”) are shown, and will be described collectively below. On the other hand, functions provided for each role will be described separately using appropriate drawings.

  In the server device 1, a CPU (Central Processing Unit) 1a, a ROM (Read Only Memory) 1b, a RAM (Random Access Memory) 1c, and an input / output interface 1d are connected via a bus 1e. An input unit 1f, a data transmission unit 1g, a storage unit 1h, and a removable disk 1i are connected to the input / output interface 1d.

  The CPU 1a reads and executes a boot program for starting the server device 1 from the ROM 1b based on an input signal from the input unit 1f, and reads various operating systems stored in the storage unit 1h. The CPU 1a controls various devices based on input signals from other external devices not shown in FIG. 2 via the input unit 1f and the input / output interface 1d. Further, the CPU 1a reads out the program and data stored in the RAM 1c, the storage unit 1h, etc. and loads them into the RAM 1c. At the same time, based on the program command read from the RAM 1c, the CPU 1a transmits and receives inspection data and calculates and processes data Etc., and a processing device that realizes a series of processing.

  For example, the input unit 1 f receives examination data such as medical images from the modality 3 connected to the communication network N, or inputs information such as examination reservations from the management system 4 to the server device 1. Data received from the communication network N via the input unit 1f is transmitted as an input signal to the CPU 1a via the input / output interface 1d and the bus 1e.

  The data transmission unit 1g transmits, for example, inspection data from the server device 1 to another server device that configures the server cluster SC. Alternatively, the examination data including the corresponding medical image is transmitted to the client terminal 2 that has issued the browsing request.

  The input unit 1 f or the data transmission unit 1 g is specifically means such as a LAN card or a modem, for example, and connects the server device 1 to a communication network N such as the Internet or a LAN via the hub 5. It is a means that makes it possible to do. Note that the input unit 1f and the data transmission unit 1g may be configured as a communication control unit that transmits and receives inspection data and the like together.

  The storage unit 1h is composed of a semiconductor or a magnetic disk, and stores programs and data executed by the CPU 1a. Further, the above-described various application programs mounted on each server device constituting the server cluster SC are also stored in the storage unit 1h.

  The removable disk 1i is an optical disk or a flexible disk, and signals read and written by the disk drive are transmitted to and received from the CPU 1a via the input / output interface 1d and the bus 1e.

  FIG. 3 is a block diagram showing an internal configuration of the master server 1A1 according to the first embodiment of the present invention. The basic configuration of the master server 1A1 is as described with reference to FIG.

  The master server 1A1 further includes a primary server determination unit 10 and a retention period setting unit 11 as features thereof. In the embodiment of the present invention, the master server 1A identifies one of the servers constituting the server cluster SC as “primary server P”, and identifies the other servers as “other server O”.

Until now, for example, when there is a server cluster composed of a plurality of server devices, as described above, all the server devices constituting the server cluster respectively hold the same inspection data. Therefore, there was a case where scalability was lacking. In the embodiment of the present invention, all the server devices constituting the server cluster hold the same inspection data within a certain predetermined period, but after this predetermined period has passed, a specific one server Only the apparatus holds the inspection data, and the other server apparatuses delete the inspection data. In this way, while maintaining the state in which the inspection data is always held in any server device in the server cluster, on the other hand, by deleting the inspection data from the other server devices, Since it is possible to avoid squeezing the capacity of the apparatus, it is possible to ensure scalability as a whole server cluster.

  In describing the embodiment of the present invention, a server that continues to hold inspection data even after the above-described predetermined period has elapsed is referred to as “first server device P (in the following description,“ primary server P ”). The server device that deletes the inspection data after a predetermined period of time and contributes to ensuring the scalability of the server cluster is represented as “second server device O (in the following description,“ other server O ”). ) ”.

  The primary server determination unit 10 has a function of determining a “primary server P”, and determines a specific server 1 as the primary server P for each inspection data from the server devices 1 constituting the server cluster SC.

  When the primary server P is determined by the primary server determination unit 10 from the server cluster SC, the other server devices other than the primary server P and constituting the server cluster SC are automatically “other server O”. It becomes.

  Further, the primary server P is determined regardless of the master server 1A or the slave servers 1B and 1C described above. Therefore, the master server 1A may be determined as the primary server P, or, for example, the slave server 1B may be the primary server P, and the master server 1A and the slave server 1C may serve as the other server O.

  As a method of determining “primary server P”, for example, a method of assigning as primary server P in order of master server 1A1, slave server 1B, slave server 1C, master server 1A1 based on the inspection data received by master server 1A1. Can be considered. A method is also conceivable in which the free capacity of each server in the server cluster SC is confirmed at any time and the server having the largest free capacity is determined as the primary server P when the master server 1A1 receives the inspection data. How to determine the primary server P can be freely set according to a request from a medical institution or the like in which the medical image diagnostic system S is constructed.

  Further, the primary server determination unit 10 stores the correspondence relationship between the inspection data and the primary server P holding the inspection data, for example, in a mapping table, and the table is stored in, for example, the storage unit 1h or the primary server This is stored in the determination unit 10. By performing such processing, it is possible to immediately grasp which server device holds the inspection data.

  The retention period setting unit 11 sets a period for retaining the inspection data in the server device. Here, the “holding period” means a period in which all the server apparatuses constituting the server cluster SC hold one inspection data. Therefore, after the retention period has elapsed, only the primary server P determined for each inspection data continues to retain the corresponding inspection data, and the other servers O retain the corresponding retention data for the retention period. Delete inspection data.

  With respect to the “holding period”, for example, the date when the master server 1A1 receives the inspection data from the modality 3 via the communication network N can be set as a starting point, for example. Further, the specific number of days of the holding period can be arbitrarily set, for example, two days or one week.

FIG. 4 is a block diagram showing an internal configuration of the primary server P1 according to the first embodiment of this invention.

  The basic configuration of the server is the same as the general configuration of the server shown in FIG. The primary server P1 in the first embodiment is characterized in that a copy data generation unit 20 is provided. In the primary server P or the other server O, it is assumed that a receiving unit is provided that performs the same function as the input unit 1f. However, this is merely distinguished in terms of expression from the input unit 1f in the master server 1A and the slave servers 1B and 1C, and therefore, the code of the receiving unit is also given “1f”.

  The primary server P1 receives the inspection data received by the master server 1A1 via the communication network N and distributes the inspection data to other servers O (hereinafter, such a copy is referred to as “copy data”). Is generated. That is, the inspection data received from the master server 1A1 is retained by the primary server P1 even after the retention period has elapsed, but must be retained by the other server O during the retention period. During the retention period, all servers (primary server P and other servers O) constituting the server cluster SC retain inspection data or copy data, so that requests from the client terminal 2 can be handled quickly. This is because it is possible to avoid degrading the image display performance in the client terminal 2 as a result.

  The copy data generation unit 20 generates a copy based on the inspection data received by the primary server P1 from the master server 1A1. Then, copy data that is a copy of the inspection data is transmitted to the other server O via the data transmission unit 1g.

  FIG. 5 is a block diagram showing an internal configuration of another server O1 according to the first embodiment of this invention. The basic configuration of the server is the same as the general configuration of the server shown in FIG.

  In the embodiment of the present invention, when the browsing request from the client terminal 2 is met, the other server O is predetermined so as to provide inspection data (copy data) without degrading the display performance. It plays a role of holding copy data during the holding period.

  Further, after the retention period elapses, the copy data retained so far is deleted to increase its own capacity, thereby ensuring the scalability of the entire server cluster SC.

  In order to realize the role required for such another server O, the other server O1 in the first embodiment includes a copy data holding unit 30, a copy data deletion unit 32, and a determination unit 31. Yes.

  The copy data holding unit 30 holds the copy data transmitted from the primary server P1 during the holding period. The copy data is held in the copy data holding unit 30 here, but may be held in the storage unit 1h of the other server O, for example.

  The determination unit 31 determines whether or not the retention period has elapsed. Therefore, the copy data deletion unit 32 does not delete the copy data unless the determination unit 31 determines that the retention period has elapsed.

  The copy data deleting unit 32 deletes the copy data held in the other server O1 during the holding period after the holding period has elapsed. As described above, the copy data is deleted to secure the capacity of the other server O1, and hence the capacity of the server cluster SC.

  Next, the flow of holding the inspection data in the server cluster SC will be described with reference to FIG. FIG. 6 is a flowchart showing a flow of holding and deleting examination data displayed on the client terminal at the time of medical image diagnosis according to the first embodiment of the present invention.

  First, the master server 1A1 acquires new inspection data (ST1). The examination data acquired here is, for example, data including internal information of a patient acquired (captured) by the modality 3.

  Here, what is considered “new” can be arbitrarily defined. For example, the inspection data acquired and generated by the modality 3 today can be used as “new” inspection data. In this case, whether or not the image is new can be determined by using, for example, image generation date information attached to the medical image included in the examination data.

  It is also possible to define the inspection data registered for the first time in the server cluster SC as “new” inspection data. In this case, the master server 1A1 determines whether or not the inspection data received by the master server 1A1 is newly registered.

  In the flowchart shown in FIG. 6, the master server 1A1 is shown as “master” and the primary server P1 is simply shown as “primary”. The same applies to the description of the flowchart used in the description of each embodiment to be described later.

  Then, the master server 1A1 sets a retention period for the received inspection data (ST2). As described above, the holding period can be arbitrarily set. It is also possible to set all the inspection data sent to the master server 1A1 to the same retention period, or to set a retention period for each modality for transmitting inspection data, or for each inspection data.

  At the same time, the master server 1A1 (primary server determination unit 10) selects and determines the primary server P1 that plays the role of holding the received examination data even after the holding period has elapsed (ST3). As described above, the selection and determination are performed by a method such as assigning the primary server P1 in order from the master server 1A1 and the slave servers 1B and 1C constituting the server cluster SC, for example.

  When the primary server P1 is selected and determined, the determined primary server P1 (server identifier) and inspection data (inspection identifier such as inspection ID) held in the primary server P1 are associated and stored in the table. In addition, for example, information regarding a patient identifier and examination type, information on examination date, and the like may be stored in the table.

  The master server 1A1 transmits the inspection data to the server determined as the primary server P1 from the server cluster SC. And primary server P1 which received test | inspection data memorize | stores the said test | inspection data in the memory | storage part 1h (ST4). The primary server P1 copies the received inspection data, that is, the inspection data retained even after the retention period elapses, and the copy data generation unit 20 generates copy data (ST5).

  The generated copy data is transmitted to all other servers O1 via the data transmission unit 1g of the primary server P1 (ST6). For example, when the slave server 1B is determined as the primary server P1, the copy data generated by the slave server 1B is transmitted to the master server 1A1 and the slave server 1C corresponding to the other server O.

  The copy data received by the receiving unit 1f of the other server O1 is held in the copy data holding unit 30 (ST7). In the copy data holding unit 30, copy data is held for a predetermined holding period. Accordingly, since the same inspection data is held in any server of the server cluster SC, it is possible to access any server device even if a request for browsing the inspection data is issued from the client terminal 2. Therefore, the image display performance is not deteriorated.

  For example, when an inspection data browsing request is issued from the client terminal 2 to the other server O1 (the client terminal 2 accesses the other server O1), the inspection data held in the other server O1 is displayed on the client terminal 2. Displayed in the section. In particular, when the medical image diagnostic system S is configured as a thin client system, the CPU 1a and the like of the other server O1 serves as a medical information processing unit for processing examination data and responds to a request from the client terminal 2. Become.

  The other server O1 holds the copy data for the holding period. Therefore, the copy data is deleted after the retention period has elapsed. Therefore, the determination unit 31 confirms whether the holding period has elapsed (ST8). The retention period is determined in advance by the master server 1A1, and information relating to the retention period is also stored in the storage unit 1h in the other server O1.

  The determination unit 31 determines whether or not the retention period has elapsed based on, for example, information on the inspection date stored in the retained copy data (inspection data). Although not shown in FIG. 5, in making this determination, the determination unit 31 also refers to the time measured by the time measuring unit provided in the other server O1.

  If the determination unit 31 determines that the retention period has not elapsed (NO in ST9), the other server O1 retains the copy data as it is.

  On the other hand, when the retention period has elapsed (YES in ST9), the other server O1 deletes the copy data whose retention period has elapsed from the storage unit 1h using the copy data deletion unit 32 (ST10). The deletion of the copy data is performed by all of the other servers O configuring the server cluster SC. Therefore, after the copy data is deleted in the other server O1, only the inspection data stored in the primary server P1 in the server cluster SC is retained. Further, when browsing the inspection data after the retention period has elapsed, the client terminal 2 accesses the primary server P1.

  As described above, a period is provided in advance for holding the inspection data in the server cluster, and during this period, all the servers constituting the server cluster hold the inspection data equally, and after the period has elapsed, While the server O deletes the inspection data held, the primary server P continues to hold the inspection data.

  By adopting such a method, it is possible to provide a medical image diagnostic system and a medical image diagnostic method capable of ensuring scalability of a server device without causing deterioration of image display performance in a client terminal and corresponding to a large-scale system. be able to.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. In the second embodiment, the same components as those described in the first embodiment are denoted by the same reference numerals, and the description of the same components is omitted because it is duplicated.

  In the second embodiment, the function of the other server O2 is different from the function of the other server O1 in the first embodiment. That is, in the first embodiment, the retention period is considered based on the time when the master server 1A1 has a predetermined retention period and the master server 1A1 receives the inspection data to be retained.

  On the other hand, in the second embodiment, although the master server 1A1 has a predetermined holding period, it can be confirmed that a patient having examination data to be held has newly made an appointment for examination. In this case, with the date of the examination reservation as a reference, the retention period is started from this date, and the time for deleting the copy data is determined. This point is greatly different from the first embodiment.

  FIG. 7 is a block diagram showing an internal configuration of another server O2 according to the second embodiment of this invention. FIG. 8 is a flowchart showing a flow of holding and deleting examination data displayed on the client terminal 2 at the time of medical image diagnosis in the second embodiment of the present invention.

  The other server O2 in the second embodiment includes an examination reservation information acquisition unit 40 and a retention period setting unit 41 in addition to the configuration of the other server O1 described so far.

  The examination reservation information acquisition unit 40 acquires information related to a patient's examination reservation from the management system 4 via the communication network N. The target of the information acquired here is examination reservation information of a patient who has examination data held by the other server O2 itself.

  In addition, when there is examination reservation information of a patient who has examination data held as copy data by the other server O2, the holding period setting unit 41 sets the holding period based on information on the examination date in the examination reservation information. Set a new one.

  Regarding the flow of holding and deleting the examination data displayed on the client terminal during the medical image diagnosis in the other server O2, steps ST21 to ST26 are the same as steps ST1 to ST6 in the first embodiment. is there. That is, after the master server 1A1 receives the inspection data to be retained, the primary server P1 is determined, and the inspection data is transmitted to the determined primary server P1. The primary server P1 generates copy data based on the received inspection data and transmits it to the other server O2.

  In the other server O2, which has received the transmitted copy data, first, it is confirmed whether or not a patient examination reservation related to the copy data has been made (ST27). Specifically, the inspection reservation information acquisition unit 40 acquires inspection reservation information from the management system 4. At this time, the examination reservation information to be acquired is, for example, information on the examination reservation that is two to three days ahead when the acquisition date is today. It is possible to arbitrarily set at what time point the information related to the examination reservation is acquired.

  In addition, the examination reservation information acquisition unit 40 can acquire the examination reservation information as appropriate, or can acquire the examination reservation information from the management system 4 at a predetermined interval at a predetermined time. This point can also be set freely.

  In the examination reservation information acquired by the examination reservation information acquisition unit 40, for example, the examination reservation information acquisition unit 40 determines whether or not there is examination reservation information related to the patient held in the other server O2. This is performed based on patient information such as a patient ID attached to the copy data stored therein. Alternatively, the determination unit 31 may perform the confirmation.

  If there is examination reservation information related to the patient of the copy data held in the other server O2 (YES in ST28), the holding period setting unit 41 of the other server O2 holds the holding period on the basis of the day when the examination reservation is entered. Is set (ST29). In this case, it is possible to change only the starting point of the holding period set in the master server 1A1 and not to change the length of the holding period, or the length of the holding period set by the master server 1A1 is also possible. It can also be changed (set).

  On the other hand, when the examination reservation information acquisition unit 40 does not acquire examination reservation information related to the patient of the copy data held in the other server O2 (NO in ST28), the other server O2 is determined in advance as follows. A predetermined retention period is set with reference to the time when the master server 1A1 acquires the inspection data (ST30).

  Thereafter, the flow (ST31 to ST33) of confirming whether or not the retention period has elapsed in the other server O2 and deleting the retained copy data after the retention period has elapsed (ST31 to ST33) is as described in the first embodiment. Yes (ST8 to ST10).

  As described above, a period is provided in advance for holding the inspection data in the server cluster, and during this period, all the servers constituting the server cluster hold the inspection data equally, and after the period has elapsed, While the server O deletes the inspection data held, the primary server P continues to hold the inspection data.

  By adopting such a method, it is possible to provide a medical image diagnostic system and a medical image diagnostic method capable of ensuring scalability of a server device without causing deterioration of image display performance in a client terminal and corresponding to a large-scale system. be able to.

(Third embodiment)
Next, a third embodiment of the present invention will be described. In the third embodiment, the same components as those described in the first and second embodiments are denoted by the same reference numerals, and the description of the same components is duplicated. Omitted.

  In the second embodiment, the other server O2 acquires the examination reservation information from the management system 4, and sets the retention period based on the information. The third embodiment is characterized in that the primary server P2 performs the role of the other server O2 in the second embodiment.

  FIG. 9 is a block diagram showing an internal configuration of the primary server P2 in the third embodiment of the present invention. FIG. 10 is a flowchart showing a flow of holding and deleting examination data displayed on the client terminal 2 at the time of medical image diagnosis according to the third embodiment of the present invention.

  As shown in the block diagram showing the internal configuration of the primary server P2 in FIG. 9, the primary server P2 adds the examination reservation information acquisition unit 40 and the retention period setting unit 41 to the internal configuration of the primary server P1 shown in FIG. It has the structure which did.

  The functions of the examination reservation information acquisition unit 40 and the retention period setting unit 41 are as described in the second embodiment. In other words, the former acquires information related to a patient's examination reservation from the management system 4 via the communication network N. The target of information acquired here is examination reservation information of a patient who has examination data held by the primary server P2 itself.

  In the latter case, when there is examination reservation information of a patient having examination data held by the primary server P2, a holding period is newly set based on information related to an examination date in the examination reservation information.

  The flow of setting the retention period in the third embodiment is as follows. As shown in the flowchart of FIG. 10, the master server 1A1 acquires new inspection data, sets the retention period, determines the primary server P2, and transmits the inspection data to the primary server P2. The same is true (ST21 to ST24).

  The primary server P2 that has received the examination data from the master server 1A1 confirms whether or not an examination reservation for a patient related to the examination data has been made (ST41). Specifically, the inspection reservation information acquisition unit 40 acquires inspection reservation information from the management system 4. At this time, as described above, it is possible to arbitrarily set the information regarding the examination reservation at which time point.

  In addition, the examination reservation information acquisition unit 40 can acquire the examination reservation information as appropriate, or can acquire the examination reservation information from the management system 4 at a predetermined interval at a predetermined time. This point can also be set freely.

  Of the examination reservation information acquired by the examination reservation information acquisition unit 40, the determination as to whether or not there is examination reservation information related to the patient held in the primary server P2 is held by the examination reservation information acquisition unit 40 in the storage unit 1h. For example, it is based on patient information such as a patient ID attached to the examination data. Or you may provide the judgment part etc. which judge whether the patient information in the examination reservation information acquired and the patient information in the already held examination data match or do not match.

  When there is examination reservation information related to the patient of the examination data held in the primary server P2 (YES in ST42), the holding period setting unit 41 of the primary server P2 holds the holding period on the basis of the day when the examination reservation is entered. Is set (ST43). In this case, it is possible to change only the starting point of the holding period set in the master server 1A1 and not to change the length of the holding period, or the length of the holding period set by the master server 1A1 is also possible. It can also be changed (set).

  On the other hand, when the examination reservation information acquisition unit 40 does not acquire examination reservation information related to the patient of the examination data held in the primary server P2 (NO in ST42), the primary server P2 is determined in advance as follows. A predetermined retention period is set with reference to the time when the master server 1A1 acquires the inspection data (ST44).

  Thereafter, the copy data is generated in the primary server P2 and transmitted to the other server O, and the other server O confirms whether or not the retention period has elapsed, and deletes the retained copy data after the retention period has elapsed. The flow is as described in the second embodiment (step ST25, step ST26 and step ST31 to step ST33).

  As described above, a period is provided in advance for holding the inspection data in the server cluster, and during this period, all the servers constituting the server cluster hold the inspection data equally, and after the period has elapsed, While the server O deletes the inspection data held, the primary server P continues to hold the inspection data.

By adopting such a method, it is possible to provide a medical image diagnostic system and a medical image diagnostic method capable of ensuring scalability of a server device without causing deterioration of image display performance in a client terminal and corresponding to a large-scale system. be able to.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described. In the fourth embodiment, the same components as those described in the first to third embodiments are denoted by the same reference numerals, and the description of the same components is duplicated. Omitted.

  In the first to third embodiments so far, it has been described how to determine the retention period of copy data. In contrast, in the fourth embodiment and a fifth embodiment to be described later, extension of the set retention period will be described.

  If there is a browsing request, that is, access from the client terminal 2 to the inspection data or copy data during the holding period of the server device 1, the corresponding inspection data or copy data corresponds to the browsing request. Transmit to the client terminal 2.

  When this is seen from the server cluster SC side, the fact that there was an access during the retention period means that there is a possibility that the corresponding inspection data or copy data will be accessed in the future. . Therefore, when deleting copy data after the retention period has elapsed, it is determined whether or not the retention period can be extended in consideration of whether or not the copy data is accessed during the retention period.

  That is, if there is an access to the copy data of another server O during the holding period, it is highly likely that the next server O will be accessed next time. In such a situation, if the copy period is deleted from the other server O when the retention period has passed and the inspection data is held only in the primary server P, the client terminal 2 can access the other server O. Since there is no copy data, it is necessary to access again to the primary server P holding the inspection data. This causes a deterioration in image display performance in the client terminal 2.

  Therefore, in the fourth embodiment, the other server O that is permitted to access the copy data during the holding period extends the copy data holding period to cope with the access again after the original holding period has elapsed. It can be so.

  FIG. 11 is a block diagram showing an internal configuration of the other server O3 in the fourth embodiment of the present invention. FIGS. 12 and 13 are flowcharts showing the flow of holding and deleting examination data displayed on the client terminal at the time of medical image diagnosis in the fourth embodiment of the present invention.

  The other server O3 in the fourth embodiment has the same basic configuration as that of the other server O1 in the first embodiment shown in FIG. 5, but newly includes an access confirmation unit 50 and a retention period extension unit 51. I have.

The access confirmation unit 50 confirms whether or not there is a browsing request (access) from the client terminal 2 to the copy data held in the copy data holding unit 30 of the other server O3. In the server cluster SC, one or more other servers O exist, but the presence or absence of access is confirmed for each individual other server O. Therefore, depending on the other server O constituting the server cluster SC, there are cases where the access from the client terminal 2 can be confirmed and the access cannot be made. As will be described later, the copy data holding period is extended in the other server O to which access is permitted, and the copy data holding period is not extended in the other server O to which access is not allowed.

  The retention period extension unit 51 extends a predetermined period that is predetermined as a retention period when access to the copy data of the other server O is permitted. The extension width can be arbitrarily set. Also, this extension width can be set to extend all copy data uniformly for a predetermined period, or to change the extension width according to the nature of the copy data (inspection data). Also good.

  Next, a specific flow of extending the retention period will be described using the flowcharts shown in FIGS. 12 and 13, particularly FIG. The flow shown in FIG. 12 is the same as the flow described in step ST1 to step ST9 (see FIG. 6) in the first embodiment, for example. That is, from the time when the master server 1A1 newly acquires the inspection data to the setting of the holding period, the setting of the primary server P, the generation of copy data in the primary server P, the holding in the other server O3, and the confirmation of whether the holding period has elapsed The flow is shown (ST51 to ST59).

  If the determination unit 31 of the other server O3 determines whether or not the retention period has elapsed, and if it is determined that the retention period has elapsed (YES in ST59), the process proceeds to copy data deletion processing in the above-described embodiment. . However, in the fourth embodiment, the presence / absence of access to the copy data held by the other server O3, that is, the last access date is confirmed before the shift to the deletion process (ST60).

  Here, the “last access date” means the access date that is closest to the point in time when the copy data deletion process is performed. If there is no access to the copy data of the other server O3, there is of course no last access date.

  As a result of the access confirmation unit 50 confirming the presence or absence of access, if the last access date is confirmed (YES in ST61), the retention period extension unit 51 of the other server O3 extends the retention period based on the last access date. (ST62). After that, the determination unit 31 determines whether or not the extended retention period has elapsed (ST63). If the extension period has elapsed (YES in ST63), the copy data whose retention period has elapsed is deleted. (ST64).

  Here, the starting point of the extension period (extension width) can be arbitrarily set. That is, as described above, the extension period may be started from the last access date as a reference. Alternatively, when access is permitted during the holding period, that is, when the last access date can be confirmed, the extension period may be set to start after the original holding period has elapsed. In this case, the final retention period of the copy data in the other server O3 is a period obtained by adding the extension period to the original retention period.

  As a result of the determination unit 31 confirming the last access date, if the access to the copy data of the other server O3 cannot be confirmed (NO in ST61), the retention period is not extended. Deletion processing is performed (ST64).

  As described above, a period is provided in advance for holding the inspection data in the server cluster, and during this period, all the servers constituting the server cluster hold the inspection data equally, and after the period has elapsed, While the server O deletes the inspection data held, the primary server P continues to hold the inspection data.

By adopting such a method, it is possible to provide a medical image diagnostic system and a medical image diagnostic method capable of ensuring scalability of a server device without causing deterioration of image display performance in a client terminal and corresponding to a large-scale system. be able to.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described. Note that in the fifth embodiment, the same components as those described in the first to fourth embodiments are denoted by the same reference numerals, and the description of the same components is redundant. Omitted.

  In the fourth embodiment, the extension of the copy data holding period in the other server O is determined based on whether or not the copy data held by the other server O is accessed. The fifth embodiment is characterized in that whether or not there is examination reservation information related to a patient having the copy data is used as a criterion for determining whether or not the retention period is extended, rather than whether or not there is access.

  FIG. 14 is a block diagram showing an internal configuration of another server O4 according to the fifth embodiment of the present invention. FIG. 15 is a flowchart showing a flow of holding and deleting examination data displayed on the client terminal at the time of medical image diagnosis according to the fifth embodiment of the present invention.

  The other server O4 in the fifth embodiment has the same basic configuration as that of the other server O1 in the first embodiment shown in FIG. 5, but newly has an examination reservation information acquisition unit 40 and a retention period extension unit. 51 is provided.

  The examination reservation information acquisition unit 40 acquires information related to a patient's examination reservation from the management system 4 via the communication network N. The object of the information acquired here is examination reservation information of a patient who has examination data held by the other server O4 itself.

  The holding period extension unit 51 extends a predetermined period set as a holding period when there is examination reservation information related to a patient having copy data of another server O4. The extension width can be arbitrarily set. The extension width may be set so that all copy data is uniformly extended for a predetermined period, or may be set so that the extension width is changed according to the properties of the copy data.

  Next, a specific flow of extending the holding period will be described using the flowchart shown in FIG. Note that “A” in FIG. 14 is connected to “A” in FIG. Therefore, the flow shown in FIG. 12 is shared with the fourth embodiment. In FIG. 12, as described above, after the master server 1A1 newly acquires the inspection data, the retention period is set, the primary server P is set, the copy data is generated in the primary server P, and the retention and retention periods have elapsed in the other server O3. The flow up to the confirmation of the presence or absence is shown (ST51 to ST59).

  If the determination unit 31 of the other server O4 determines whether or not the retention period has elapsed, and if it is determined that the retention period has elapsed (YES in ST59), the process proceeds to copy data deletion processing in the above-described embodiment. . However, in the fifth embodiment, the presence or absence of examination reservation information related to a patient having copy data held by the other server O4 is confirmed before shifting to the deletion process (ST71).

  Specifically, the inspection reservation information acquisition unit 40 acquires inspection reservation information from the management system 4. At this time, as described above, it is possible to arbitrarily set the information regarding the examination reservation at which time point.

In addition, the examination reservation information acquisition unit 40 can acquire the examination reservation information as appropriate, or can acquire the examination reservation information from the management system 4 at a predetermined interval at a predetermined time. This point can also be set freely.

  In the examination reservation information acquired by the examination reservation information acquisition unit 40, for example, the examination reservation information acquisition unit 40 stores the determination as to whether or not there is examination reservation information regarding a patient having copy data held in the other server O4. This is performed based on patient information such as a patient ID attached to the examination data held in the section 1h. Alternatively, such a determination may be made in the determination unit 31.

  As a result of the examination reservation information acquisition unit 40 confirming the presence or absence of the examination reservation information, if the existence of the examination reservation information can be confirmed (YES in ST71), the retention period extension unit 51 of the other server O4 includes the examination reservation information. The retention period is extended based on the included examination appointment date (ST72). After that, the determination unit 31 determines whether or not the extended retention period has elapsed (ST73). If the extension period has elapsed (YES in ST73), the copy data whose retention period has elapsed is deleted. (ST74).

  Here, the extension period (extension width) can also be set arbitrarily. That is, as described above, the extension period may be started from the inspection reservation date as a reference. Alternatively, the extension period may be set to extend as long as the inspection reservation date is included after the holding period has elapsed. In this case, the final retention period of the copy data in the other server O4 is a period obtained by adding the extension period to the original retention period.

  In addition, as a result of checking the examination reservation date by the determination unit 31, if the examination reservation information regarding the patient having copy data of the other server O4 cannot be confirmed (NO in ST71), the retention period is extended. Without deleting, the deletion process is performed (ST73).

  As described above, a period is provided in advance for holding the inspection data in the server cluster, and during this period, all the servers constituting the server cluster hold the inspection data equally, and after the period has elapsed, While the server O deletes the inspection data held, the primary server P continues to hold the inspection data.

  By adopting such a method, it is possible to provide a medical image diagnostic system and a medical image diagnostic method capable of ensuring scalability of a server device without causing deterioration of image display performance in a client terminal and corresponding to a large-scale system. be able to.

(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described. In the sixth embodiment, the same components as those described in the first to fifth embodiments are denoted by the same reference numerals, and the description of the same components is duplicated. Omitted.

  In the sixth embodiment, the operation of the server apparatus constituting the server cluster SC after the retention period has elapsed will be described. That is, as described above, since the retention period has elapsed, the copy data is deleted from the other server O, and the inspection data is retained only by the primary server P.

  The inspection data and its copy data are held in all the server devices constituting the server cluster SC of the primary server P and the other server O during the holding period. However, as described above, when the holding period elapses, the copy data held by the other server O is deleted except for the inspection data held by the primary server P. However, such a holding method is optimal for ensuring the scalability of the server cluster SC.

  Therefore, after the retention period has elapsed, the examination data is retained only in the primary server P. On the other hand, if the patient related to the examination data has entered the examination reservation after the retention period has elapsed, It may be necessary to access the previous inspection data held in the server P. If such an access cannot be appropriately handled, the image display performance of the client terminal 2 may be deteriorated.

  Therefore, in the sixth embodiment, if it can be confirmed that the patient related to the examination data has entered the examination reservation after the retention period has elapsed, the copy deleted in the other server O as the retention period has elapsed. Data is generated again in the primary server P. Then, the primary server P distributes and holds it again to the other server O, thereby avoiding deterioration of the image display performance in the client terminal 2.

  FIG. 16 is a block diagram showing an internal configuration of the master server 1A2 in the sixth embodiment of the present invention. FIG. 17 is a flowchart showing a flow in which the primary server P generates copy data again after deleting copy data according to the sixth embodiment of the present invention. The processing in the sixth embodiment will be described below with reference to the flowchart of FIG. 17 while also including the function of the master server 1A2 shown in FIG.

  The master server 1 acquires and confirms examination reservation information as to whether or not there is a patient's examination reservation regarding the copy data deleted after the retention period has passed (ST81). As shown in the block diagram of FIG. 16, the master server 1A2 in the sixth embodiment includes an examination reservation information confirmation unit 60 in addition to the basic configuration of the server device.

  The examination reservation information confirmation unit 60 accesses the management system 4 via the communication network N and confirms whether or not there is examination reservation information. The frequency of confirmation may be periodically confirmed with the management system 4 at a specific time, for example, after the daily examination is completed or after all the inspection work for the day in the medical institution is completed. Further, it is possible to adopt a method in which confirmation is performed by having the management system 4 transmit only the examination reservation information newly registered at certain intervals. In any case, the setting can be arbitrarily made.

  Note that the examination reservation information acquired by the master server 1A2 is new examination reservation information. Here, the “new inspection reservation information” is information that has not been acquired by the inspection reservation information confirmation unit 60 from the management system 4 and has not been confirmed so far. As described above, the examination reservation information confirmed by the examination reservation information confirmation unit 60 is new, for example, as described above, the examination reservation information confirmation unit 60 determines whether or not the examination reservation information is present at a predetermined interval. This is because it is confirmed, and it is not necessary to confirm the confirmed examination reservation information again.

  Such a method is related to the frequency of confirmation, but is particularly effective in a medical institution where a lot of examination reservation information is registered every day. In addition, by predetermining the nature of the examination reservation information that is the basis for confirmation in this way, it is possible to avoid the inconvenience of missing the examination reservation information.

  The master server 1A2 determines whether or not the acquired examination reservation information includes examination reservation information related to the same patient as the patient of the examination data held in the server cluster SC, that is, the primary server P at this stage. Confirm (ST82). For example, in the primary server determination unit 10 of the master server 1A2, a mapping table indicating the correspondence between the inspection data and the primary server P holding the inspection data is provided.

Therefore, the master server 1A2 immediately knows which server holds the examination data related to the patient of the examination reservation information by associating the information stored in the mapping table with the acquired examination reservation information. Yes (ST83).

  As a result of checking the mapping table, if examination data related to the patient of the obtained examination reservation information is not found (NO in ST83), information relating to the new appointment is obtained again from the management system 4.

  When the examination reservation information confirmation unit 60 confirms that new examination reservation information related to the patient of the deleted copy data exists in the management system 4 (YES in ST83), the master server 1A2 is retained. A primary server P that holds examination data, that is, examination data relating to a patient in which new examination reservation information is registered, is specified in the primary server determination unit 10 (ST84).

  To that effect, a notification is sent from the master server 1A2 to the primary server P, and based on the examination data of the patient regarding the examination reservation information held by the primary server P for the identified primary server P. Is requested to regenerate the copy data (ST85).

  This is because when examination is performed on the patient from examination reservation information and new examination data is acquired, there is a possibility that the previous examination data may be accessed and used for examination. In such a case, access (view request) is made from the client terminal 2 to the server cluster SC. At that time, when only the primary server P holds the inspection data, the image display performance of the client terminal 2 is appropriate. There is also a possibility that it cannot be exhibited. Therefore, as described in the first to fifth embodiments, the inspection data is not held only in the primary server P, but the inspection data is copied to generate copy data, and the copy data is stored in the other server O. Holds the image display performance of the client terminal 2.

  The primary server P that has received the copy data regeneration request from the master server 1A2 generates copy data and transmits it to the other server O (ST86). The other server O that received the copy data once again retains the deleted copy data because the retention period has elapsed (ST87). As a result, a state is created in which the primary server P and the other server O in the server cluster SC respectively hold the previous examination data regarding the patient of the examination reservation information and the copy data thereof. By maintaining such a state for a new holding period, it is possible to provide inspection data or copy data thereof at an appropriate timing when the client terminal 2 needs it.

  As described above, when patient examination reservation information related to examination data etc. whose retention period has expired in another server is registered, once deleted copy data is generated again and prepared for access from the client terminal Therefore, it is possible to provide a medical image diagnostic system and a medical image diagnostic method that can ensure scalability of a server device without causing degradation of image display performance in a client terminal and can be applied to a large-scale system.

  In the sixth embodiment, since the effects in the first to fifth embodiments are premised, a period is provided in advance for holding inspection data in the server cluster, and the server cluster is used during the period. All the server apparatuses that constitute the same hold the inspection data equally, and after the period has elapsed, the other server O deletes the inspection data that has been held, while the primary server P continues to perform the inspection. Of course, it is possible to provide a medical image diagnostic system and a medical image diagnostic method that retain data.

  Although an embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. For example, in the above-described embodiment, the description has been made on the assumption that the other server holding the copy data deletes the copy data, but for example, the primary server deletes the copy data of the other server after the holding period elapses. You may comprise so that it may do. In addition, the other server may perform the process performed by the primary server and the process performed by the other server.

  This embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. This embodiment and its modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

1A Master server 1B Slave server 1C Slave server 2 Client terminal 3 Modality 4 Management system S Medical diagnostic imaging system SC Server cluster

Claims (10)

A client terminal that generates operation information for requesting medical information processing;
A server cluster connected to the client terminal via a communication network, configured with a plurality of server devices, and processing a processing request from a client;
The server cluster is
A receiving unit provided in the first server device for receiving inspection data ;
A storage unit that is provided in the first server device and stores the inspection data received by the reception unit;
A copy data generation unit that is provided in the first server device and generates copy data based on the inspection data for transmission to the second server device;
A transmission unit for transmitting the generated copy data to the second server device;
A copy data holding unit that is provided in the second server device and holds the copy data;
A medical information processing unit that is provided in the second server device and processes examination data that is the copy data held in the copy data holding unit in response to a request from the client terminal;
A determination unit for determining whether the retention period has elapsed,
A copy data deletion unit that is provided in the second server device and deletes the copy data according to a determination result of the determination unit ;
The first or second server device further checks the presence / absence of patient examination reservation information related to the examination data via the communication network, and acquires the examination reservation information when the examination reservation information exists. A medical image diagnostic system comprising: an examination reservation information acquisition unit; and a retention period setting unit that sets a retention period of the examination data based on the acquired examination reservation information . The first server device or the second server device constituting the server cluster is:
An input unit for receiving examination data transmitted from the medical image diagnostic apparatus connected to the communication network;
A retention period setting unit for setting a retention period of the inspection data;
A primary server determination unit for determining a first server from a plurality of servers constituting the server cluster;
And serving as a master server that determines the first server that receives the inspection data, sets the retention period, and continues to retain the inspection data even after the retention period has elapsed. The medical image diagnostic system according to claim 1.   The second server device includes: an access confirmation unit that confirms whether or not the client terminal has access to the copy data held by the second server device; and the inspection data based on the access date confirmed by the access confirmation unit. The medical image diagnostic system according to claim 1, further comprising a retention period extension unit that extends a retention period.   The second server device further confirms the presence or absence of patient examination reservation information regarding the examination data via the communication network, and obtains the examination reservation information when the examination reservation information exists. The medical image diagnosis system according to claim 1, further comprising: a storage unit; and a retention period extension unit that extends a retention period of the examination data based on the acquired examination reservation information. The master server, after the copy data held in the second server device is deleted, an examination reservation information confirmation unit for confirming the existence of the examination reservation information via the communication network, and the examination reservation A primary server determination unit that identifies a first server device that holds the examination reservation information when the information is confirmed, and creates a request to regenerate a new copy data of the patient related to the examination reservation information; The medical image diagnostic system according to claim 2 . A server having a function of processing inspection data based on operation information transmitted from a client terminal via a communication network, and transmitting a result of the processing to the client terminal, the singular or plural slaves A master server that forms a server cluster with the server obtains new inspection data;
The master server setting a retention period of the inspection data;
Determining a first server device mainly holding the inspection data from the server cluster;
The master server transmitting the inspection data to the first server device and holding it in the first server device;
The first server device generates copy data based on the inspection data;
Transmitting the copy data generated by the first server device to a second server device constituting the server cluster;
Holding the copy data in the second server device;
The second server device confirming the presence or absence of examination reservation information about the patient related to the copy data;
When the inspection reservation information is confirmed, the second server device sets a retention period of the copy data based on a date on which inspection reservation is made;
If the inspection reservation information is not confirmed, the second server device sets the retention period of the copy data based on the retention period set for the inspection data by the master server;
The second server device confirming whether the retention period of the copy data has elapsed;
The second server device deleting the copy data whose retention period has elapsed when the retention period has elapsed; and
A medical image diagnostic method comprising: A server having a function of processing inspection data based on operation information transmitted from a client terminal via a communication network, and transmitting a result of the processing to the client terminal, the singular or plural slaves A master server that forms a server cluster with the server obtains new inspection data;
The master server setting a retention period of the inspection data;
Determining a first server device mainly holding the inspection data from the server cluster;
The master server transmitting the inspection data to the first server device and holding it in the first server device;
The first server device confirming the presence or absence of examination reservation information about the patient related to the examination data;
When the inspection reservation information is confirmed, the first server device sets a copy data retention period based on the inspection reservation date;
If the inspection reservation information is not confirmed, the first server device sets the retention period of the copy data based on the retention period set for the inspection data by the master server;
The first server device generates the copy data based on the inspection data;
  Transmitting the copy data generated by the first server device to a second server device constituting the server cluster;
Holding the copy data in the second server device;
The second server device confirming whether the retention period of the copy data has elapsed;
The second server device deleting the copy data whose retention period has elapsed when the retention period has elapsed; and
A medical image diagnostic method comprising: The second server device confirms whether or not the retention period of the copy data has elapsed, and then deletes the copy data that has passed the retention period when the retention period has elapsed. before,
The second server device confirms whether or not the client terminal has accessed the device;
When there is an access from the client terminal, the second server device extends the retention period of the copy data based on the extension period determined by the retention period extension unit based on the last access date;
The medical image diagnostic method according to claim 6 or 7, further comprising : The second server device, the after confirming the presence or absence of the holding period of time of the copy data, the second server device in a case where the holding period has elapsed to remove the copy data has elapsed retention period before,
The server confirms the presence or absence of examination reservation information about the patient regarding the copy data; and
If the inspection reservation information is confirmed, extending the copy data retention period based on the inspection reservation date;
The medical image diagnostic method according to claim 6 or 7, further comprising : When the copy data held by the second server device is deleted and the inspection data is held only by the first server device,
The master server obtaining new examination reservation information;
The master server, a step of checking whether the contains novel the new examination reservation information for the same patients and patients of the test data held in the server cluster within the examination reservation information,
A step of the novel examination reservation information when it is confirmed, to identify the first server that holds the test data relating to the patient,
The master server requesting the identified first server device to generate copy data relating to the examination data held again;
The first server device generates the copy data again based on a request from the master server, and transmits the copy data to the second server device;
The medical image diagnostic method according to claim 6, further comprising :

Images