JP6930515B2 - Image display device, image display method and image display program - Google Patents

Description

The present invention relates to an image display device, an image display method, and an image display program.

In contrast to conventional still image photography and diagnosis of radiation (X-rays) using films / screens and brilliant phosphor plates, recently, semiconductor image sensors such as FPDs (flat panel detectors) have been used for diagnosis. Attempts have been made to dynamically photograph a site (hereinafter referred to as a target site) and apply it to diagnosis.

Specifically, by utilizing the quick response of reading / erasing the image data of the semiconductor image sensor, pulsed radiation is continuously irradiated from the radiation source at the timing of reading / erasing the semiconductor image sensor. The dynamics of the target site are photographed by taking images multiple times per second. By sequentially displaying a series of a plurality of frame images acquired by dynamic imaging on the screen, the doctor can observe a series of movements of the target site.

Then, for example, when the target site is the lung or the heart, the doctor sees the reproduced lung or heart moving on the screen, that is, each frame image obtained by dynamically photographing the lung or the heart, and sees the lung. It is possible to make a diagnosis by observing whether there is a place where the function (ventilation function, pulmonary blood flow function, etc.) is deteriorated or a place where the heartbeat is abnormal (see, for example, Patent Document 1).

JP-A-2017-225475

However, in dynamic photography, images for one breath to several breaths are usually acquired in one shooting, and the number of images ranges from several tens to several hundreds. For this reason, if all the captured frame images are reproduced as a moving image as an image confirmation for diagnosis, there is a problem that it takes a lot of time to obtain the diagnosis result.
In order to make a quick and appropriate diagnosis, it is necessary to easily narrow down the images that are important for making a diagnosis from a large number of images and display them efficiently.
In this regard, Patent Document 1 prevents the user from feeling uncomfortable or making a mistake in the diagnosis by preventing the moving image from being played back in a state where the moving cycle is deviated when the moving image is taken of the target portion having a periodic movement. It is a technology to prevent it from happening. On the other hand, operability for improving the diagnostic efficiency of the user by narrowing down the images important for diagnosis from a large number of images was not considered.

The present invention has been made in view of the above problems, and is efficient in improving operability when narrowing down images that are important for making a diagnosis from a large number of dynamically photographed images. An object of the present invention is to provide an image display device, an image display method, and an image display program capable of interpreting images.

In order to solve the above problems, the image display device of the present invention is used.
An image acquisition unit that acquires a dynamic image having a plurality of frame images obtained by photographing the dynamics of the subject by irradiating the subject with radiation, and an image acquisition unit.
A designation unit that specifies a display frame image by designating the frame image or information corresponding to the frame image from the dynamic image acquired by the image acquisition unit.
A display control unit that controls the display unit so as to display the dynamic image as a moving image in a specific range including the display frame image and the frame image before the display frame image on the time axis.
Equipped with a,
The image acquisition unit can acquire a medical image obtained by radiography, and can acquire the medical image.
A determination control unit for determining whether or not the dynamic image is included in the medical image acquired by the image acquisition unit is further provided.
The designation unit is characterized in that when it is determined by the determination control unit that the dynamic image is included, the frame image or the information corresponding to the frame image can be specified from the dynamic image. do.

Further, the image display method, which is another aspect of the present invention, is
An image acquisition step of acquiring a dynamic image having a plurality of frame images obtained by photographing the dynamics of the subject by irradiating the subject with radiation, and an image acquisition step.
A designation step of designating a display frame image by designating the frame image or information corresponding to the frame image from the dynamic images acquired in the image acquisition step.
A display step of displaying the dynamic image as a moving image in a specific range including the display frame image and the frame image before the display frame image on the time axis.
Only including,
In the image acquisition step, it is possible to acquire a medical image obtained by radiography, and it is possible to acquire a medical image.
A determination step for determining whether or not the dynamic image is included in the medical image acquired in the image acquisition step is further provided.
The designation step is characterized in that, when it is determined in the determination step that the dynamic image is included, the frame image or the information corresponding to the frame image can be designated from the dynamic image. ..

Further, the image display program, which is another aspect of the present invention, is
On the computer of the image display device,
An image acquisition function for acquiring a dynamic image having a plurality of frame images obtained by photographing the dynamics of the subject by irradiating the subject with radiation, and an image acquisition function.
A designation function for designating a display frame image by designating the frame image or information corresponding to the frame image from the dynamic images acquired by the image acquisition function.
A display function for displaying the dynamic image as a moving image in a specific range including the display frame image and the frame image before the display frame image on the time axis.
Realized ,
The image acquisition function can acquire a medical image obtained by radiography, and can acquire the medical image.
On the computer of the image display device,
Further, a determination function for determining whether or not the dynamic image is included in the medical image acquired by the image acquisition function is realized.
The designation function is characterized in that, when it is determined by the determination function that the dynamic image is included, the frame image or the information corresponding to the frame image is designated from the dynamic images. do.

According to the present invention, it is possible to improve the operability when narrowing down an image which is important for making a diagnosis from a large amount of dynamically photographed images, and to perform efficient image interpretation.

It is a main part block diagram which shows the medical image system including the image display device which concerns on this embodiment. It is a block diagram of the main part of the image display device which concerns on this embodiment. It is a figure which shows an example of the display screen of a display part. It is a figure which shows one screen example in the case of selecting a reproduction range at one point in the image itself of the display screen of a display part. It is a figure which shows one screen example in the case of selecting a reproduction range with one point in the scroll bar of the display screen of a display part. It is a figure which shows one screen example in the case of selecting the reproduction range at one point in the graph corresponding to the image displayed on the display part. It is a figure which shows the one-screen example which specifies the first frame image at the time of selecting a reproduction range by two points on the display screen of a display part. It is a figure which shows the one-screen example which specifies the last frame image at the time of selecting a reproduction range by two points on the display screen of a display part. It is a figure which shows one screen example at the time of selecting the reproduction range by two points in the graph corresponding to the image displayed on the display part. It is a figure which shows one screen example in the case of selecting a reproduction range with two points on the reproduction range setting screen of a display part. It is a flowchart which shows the processing by the image display device which concerns on this Embodiment. It is a flowchart which shows the processing by the image display device which concerns on this Embodiment.

Hereinafter, an embodiment of an image display device (image display system) according to the present invention will be described with reference to the drawings.
In the following, the control means 11, the storage means 12, the display means 15 (see FIG. 2), and the like for performing image analysis, display control, setting of the reproduction range, etc., which will be described later, are configured in one device (image display device). However, the "image display device" in the following can be replaced with an "image display system". That is, although not shown, for example, a functional unit for performing image analysis, a functional unit for setting a reproduction range, a storage means, and a part or all of the display means are configured as separate devices, and they are connected by a network. It is also possible to systematize (that is, as an image display system) by connecting or the like.
Further, the embodiments described below are provided with various technically preferable limitations for carrying out the present invention, but the technical scope of the present invention is not limited to the following embodiments and illustrated examples. No.

[Positioning of image display device (image display system)]
The image display device of the present embodiment acquires a medical image such as a radiodynamic image (hereinafter referred to as "dynamic image") in a medical image system, and displays the medical image such as the acquired dynamic image and various information. Is what you do.
First, as a premise, the relationship between the medical image system and the image display device assumed in the present embodiment will be described with reference to FIG.

[Medical imaging system configuration]
FIG. 1 shows a system configuration example of the medical image system 100.
The medical image system 100 is a system installed in a medical facility such as a hospital.
As shown in FIG. 1, the medical image system 100 includes an image display device (medical image display device) 1, a medical image capturing device 2, an image management server 3, and the like. Each device is connected so as to be able to transmit and receive data via a communication network N including a communication line such as a LAN (Local Area Network) or a WAN (Wide Area Network). Each device constituting the medical image system 100 conforms to the DICOM (Digital Image and Communications in Medicine) standard, and communication between the devices is performed according to the DICOM standard.
The number of each device is not particularly limited. For example, various modalities such as a CT (Computed Tomography) device, an MRI (Magnetic Resonance Imaging) device, and a CR (Computed Radiography) device may be provided as the medical imaging device 2. As for various modality, any one type may be prepared for a plurality of units, or a plurality of types may be prepared for each unit, and the number and combination thereof are appropriately determined according to the needs of the facility and the like.

The image management server 3 is a computer device that stores, stores, and manages image data of medical images generated by various modalities (medical imaging device 2) and incidental information related to the medical images. The medical image includes, for example, a tomographic image generated by a CT device, an MRI device, or the like, a simple X-ray image generated by a CR device, or the like. Further, in the present embodiment, the medical image includes a dynamic imaging image acquired when the dynamic imaging is performed by the medical imaging apparatus 2.

Here, the "dynamic imaging" is a continuous radiographic imaging of the dynamics of the target site along the time axis. Specifically, radiation from a radioactive source (not shown) is pulsed and repeatedly irradiated at predetermined time intervals (pulse irradiation), or a low dose rate is continuously irradiated (continuous irradiation) continuously. Then, multiple shots are taken, and the dynamics of the target part are shot like a movie.
The “dynamically captured image” means a plurality of series of images showing the dynamics of the target site obtained by such imaging.
A series of related medical images, such as a medical image taken in one examination performed on the same site of one patient, is called a "series", but it was obtained by "dynamic imaging". In the case of a "dynamic image", a group of a plurality of images obtained by a series of continuous "dynamic images" is called a "series".
In addition, each of the plurality of images constituting the "dynamically photographed image" is called a "frame image" (frame image FI in FIG. 3 and the like), and each "frame image" constituting one "series" is in the order of photography. A "frame number" is given.
In the present embodiment, "dynamic imaging" is performed on a target site having periodic movement, such as a lung field, a diaphragm, and a heart. The part subject to "dynamic photography" is not limited to these.

The image management server 3 has a medical image DB (Data Base) 31 composed of a hard disk or the like. The medical image DB 31 stores medical image data and incidental information related to the medical image.
The medical image stored in the medical image DB 31 is stored in a DICOM file format conforming to the DICOM standard. The DICOM file is composed of an image part and a header part. The actual data of the medical image is written in the image part, and the incidental information about the medical image is written in the header part.

The incidental information includes, for example, patient information, examination information, series information, and detailed image information.
The patient information includes various information about the patient in the medical image such as the patient identification information (for example, patient ID) for identifying the patient, the patient's name, gender, and date of birth.
The test information includes various information related to the test such as the test identification information (for example, test ID) for identifying the test, the test date, and the doctor in charge.
The detailed image information includes various information related to the image such as the image generation time, the file path name indicating the storage location of the medical image, the examination comment, the measurement position of the lesion, and the measurement result.
The series information includes the series number for identifying the series in the same examination, the type of the modality (medical imaging device 2) that generated the medical image included in the series, the examination site, and the case where the medical image is a dynamic imaging image. Contains various information about the series, such as the total number of frames in the series and the frame numbers assigned to each image in the series.
As described above, the frame number is a number indicating the shooting order 1 to n (n is the total number of frames) of the medical images (each frame image FI of the dynamic shot image) generated as the same series.

When the image management server 3 receives a request for acquisition from the image display device 1 via the communication network N, the image management server 3 reads the medical image data from the medical image DB 31 and transmits it to the image display device 1 in response to the request.

[Configuration of image display device (image display system)]
The configuration of the image display device 1 (or the image display system; the same applies hereinafter) in the present embodiment will be described.
FIG. 2 is a block diagram showing a configuration of an image display device according to the present embodiment.
In the present embodiment, as shown in FIG. 2, the image display device 1 is composed of a computer in which control means 11, storage means 12, input means 13, input / output interface 14, display means 15, and the like are connected to a bus. There is.
The image display device 1 is connected to the communication network N via the input / output interface 14.
In the present embodiment, the input / output interface 14 is an image acquisition unit that acquires a medical image obtained by radiography via a communication network N.
The input / output interface 14. ) To get it.

The image display device 1 may be a general-purpose computer, but it can also be configured as a dedicated device for medical images.
Further, although not shown, the image display device 1 is for image storage for storing a control device such as a console that controls imaging by the medical image capturing device 2 and medical images such as a plurality of captured frame images FI. It may be configured as an integrated device including a database of the above.
The image display device 1 may be a desktop personal computer, a laptop computer, a tablet terminal device, or a mobile terminal device such as a smartphone.

The control means 11 includes a CPU (Central Processing Unit) 110, a ROM (Read Only Memory) 111, a RAM (Random Access Memory) 112, and the like.
The ROM 111 stores a system program executed by the CPU 110, various programs including a display control processing program (image display program) which is a program for displaying an image, and data necessary for executing these programs. The various programs are stored in the ROM 111 in the form of a computer-readable program code, and the CPU 110 sequentially executes operations according to the program code.
The RAM 112 forms a work area for temporarily storing various programs, input or output data, parameters, and the like read from the ROM 111 in various processes whose execution is controlled by the CPU 110.

In the present embodiment, the control means 11 functions as a display control means for controlling the display means 15 (monitor 150), which is a display unit for displaying a medical image.
When the control means 11 as the display control means determines that the dynamic photographed image is included by the control means 11 as the determination control unit, the control means 11 displays the dynamic photographed image on the display unit (that is, the monitor 150 of the display means 15). Automatically perform video playback processing.
In addition, whether or not the medical image to be displayed by the display means 15 (monitor 150), which will be described later, includes a dynamic imaging image obtained by continuously radiating the dynamics of the target site along the time axis. It functions as a judgment control unit for judgment.
As a method for determining whether or not the medical image to be displayed by the display means 15 by the control means 11 as the determination control unit includes the dynamic photographed image, for example, incidental information of the medical image of the examination specified by the user is used. To refer to. When it is determined from the incidental information of the medical image that a predetermined number or more of images are continuously captured, the control means 11 as the determination control unit determines that the image group is a dynamic captured image. The predetermined number of sheets in this case is appropriately set, and is, for example, 50 or more.
The method for determining whether or not the medical image to be displayed by the display means 15 by the control means 11 as the determination control unit includes the dynamic photographed image is not limited to this, and any method may be used. For example, when ancillary information such as identification information indicating that the image is a dynamic photographed image is attached to the header portion in the DICOM file, the control means 11 as the determination control unit uses the ancillary information. It is judged that the image group to have is a dynamic photographed image.

Further, in the present embodiment, the control means 11 performs image analysis on each of a plurality of frame image FIs constituting the dynamic photographed image obtained by dynamically photographing the target portion having periodic movement, and moves the motion. The cycle is calculated.
For example, when the target site having periodic movement is the lung field of a person and the period of one breath in the lung field is one cycle, the control means 11 moves up and down with breathing by appropriately performing image analysis or the like. By detecting at least the upper and lower limit positions of the moving diaphragm and identifying the image in which the diaphragm is in the upper limit position and the image in the lower limit position, the image corresponding to the start time and the end time of the dynamic cycle of the target site can be obtained. Identify the corresponding image.

Specifically, the control means 11 detects the position of the diaphragm included in the image by performing image analysis. The image in which the diaphragm is in the upper limit position shows the state at the end of the exhaled period, and the diaphragm gradually lowers as the inspiratory period shifts to the inspiratory period. Then, the image in which the diaphragm is in the lower limit position shows the state at the end of the inspiratory period in which the person inhales to the limit. Therefore, in the control means 11, the image from the image in which the diaphragm is in the upper limit position to the image in which the diaphragm is in the lower limit position is an image corresponding to the inspiratory period, and conversely, the image in which the diaphragm is in the lower limit position to the image in which the diaphragm is in the upper limit position. Is judged to be the image corresponding to the expiratory period. Further, the control means 11 determines that one set in which the image corresponding to the inspiratory period and the image corresponding to the expiratory period are continuous is an image corresponding to the period for one breath.
In this case, the "period for one breath" may be one set of the inspiratory period and the expiratory period starting from the inspiratory period, or may be one set of the expiratory period and the inspiratory period starting from the expiratory period.
The method by which the control means 11 determines the movement cycle of the target portion and the method of specifying the image corresponding to the start time point and the image corresponding to the end time point of the dynamic cycle are not particularly limited. For example, various methods can be adopted, such as the methods described in International Publication No. 2009/090894, Japanese Patent Application Laid-Open No. 2009-273671, and Japanese Patent Application Laid-Open No. 2009-153678.

The storage means 12 is composed of, for example, a non-volatile semiconductor memory, an HDD (Hard Disk Drive), or the like, and stores various data or the like.
The storage means 12 stores, for example, a medical image acquired by the input / output interface 14 which is an image acquisition unit.
The input means 13 is composed of, for example, a keyboard, a mouse, a touch panel, or the like. The touch panel is integrally formed on the monitor 150 of the display means 15 described later.
In the present embodiment, the input means 13 functions as a reproduction range designation unit for designating a reproduction range when a dynamic photographed image is acquired by the input / output interface 14 which is an image acquisition unit.
When the control means 11 functioning as the determination control unit determines that the medical image acquired by the input / output interface 14 which is the image acquisition unit includes the dynamic photographed image, the input means 13 which is the reproduction range designation unit determines. The playback range can be specified for the dynamic captured image based on the user's operation.
The details of specifying the playback range will be described later.

The display means 15 displays a medical image and various information related thereto.
In the present embodiment, the display means 15 reproduces and displays the dynamic photographed image in the reproduction range designated by the input means 13 which is the reproduction range designation unit according to the control of the control means 11 which functions as the display control unit.
Further, in the present embodiment, when the control means 11 functioning as the determination control unit determines that the medical image acquired by the input / output interface 14 which is the image acquisition unit includes the dynamic photographed image, the display control unit The control means 11 that functions as a function automatically reproduces the dynamic captured image on the display means 15 as a moving image.
It is preferable that the playback / display of the moving image is performed in a loop within the specified range.
It is not essential to play back in a loop, and when all the images within the specified range are played back, the playback may be stopped there. The user may be able to set in advance whether or not to perform loop playback.
Further, when the user performs an interrupt operation after the reproduction of the dynamic photographed image is started on the display means 15, the control means 11 as the display control unit interrupts the reproduction of the dynamic photographed image. Control. Examples of the interrupting operation include, but are not limited to, an operation such as touching or tapping the user to select the image being played. For example, a stop button or the like may be displayed on the display screen, and the user may touch the button. Further, it may be possible to set in advance what kind of operation is performed to interrupt the moving image playback as the interrupting operation.

The display means 15 includes a monitor 150 which is a display unit composed of, for example, a CRT (Cathode Ray Tube) or an LCD (Liquid Crystal Display).
In the present embodiment, the display means 15 includes a plurality of monitors 150, and at least one of them is a high-definition monitor for a user (doctor or the like) to perform image interpretation.
As a specific configuration of the display means 15, for example, image interpretation is performed with a normal monitor 150 on which a list screen of patient information, examination information, etc. for a user (doctor or the like) to select a medical image to be image-read is displayed. It is equipped with a high-definition monitor 150 for the purpose. The normal monitor 150 and the high-definition monitor 150 may be provided one by one, or a plurality of monitors may be provided.
In the present embodiment, at least the high-definition monitor 150 for image interpretation is integrally configured with a touch panel as an input means 13. As a result, when the user touches or taps the display screen of the monitor 150 with a finger, a touch pen, or the like, a predetermined input instruction signal is generated according to the position of the input operation (operation such as touch). It is designed to be sent to the control means 11.

FIG. 3 is a diagram showing an example of the monitor 150 in the present embodiment.
FIG. 3 shows an example of a high-definition monitor 150 for image interpretation in which a user (doctor or the like) displays a medical image or the like and interprets the image. In particular, dynamic imaging is performed in an examination image of a patient selected by the user. An example of a display screen displayed when an image is included is shown.
As shown in FIG. 3, substantially the central portion of the display screen of the image interpretation monitor 150 is an image display area 51 on which the frame image FI is displayed.
Further, on the left and right sides of the image display area 51, there are a patient information display area 52 for displaying patient information, an examination information display area 53 for displaying examination information related to the frame image FI displayed in the image display area 51, and an image display area 51. An image information display area 54 or the like for displaying information about the displayed frame image FI and the series including the frame image FI is provided.

In FIG. 3, the upper left of the display screen is the patient information display area 52 in which patient information such as the patient ID, patient name, date of birth and gender of the patient is displayed, and the upper right of the display screen shows the examination date and time and the image. It is an inspection information display area 53 in which inspection information such as the date and time when the content including the content is created is displayed. Further, in the lower left of the display screen, there is an image information display area 54 in which the frame number of the frame image FI, the total number of frames, the series number which is the ID unique to the series including the frame image FI, and the like are displayed.
The display area set on the display screen of the monitor 150 is not limited to that illustrated here. Further, the items displayed in the respective display areas 51 to 54 are not limited to those illustrated here. Further, the arrangement of the display areas 51 to 54 and the like are not limited to the illustrated examples.
The type and arrangement of the display areas 51 to 54 on the display screen, the items displayed in the display areas 51 to 54, and the like may be customizable by the user by appropriately changing the settings.

Further, scroll bars 55 are arranged so as to extend along the vertical direction of the display screen of the monitor 150 at the side end portion of the display screen of the monitor 150 (the right end portion in the present embodiment).
A cursor 551 corresponding to the frame image FI displayed in the image display area 51 is arranged on the scroll bar 55, and when the cursor 551 on the scroll bar 55 moves by scrolling the scroll bar 55, this is used. Along with this, the image displayed in the image display area 51 is switched to the image corresponding to the position of the cursor 551. That is, the cursor 551 corresponds to the frame image FI displayed in the image display area 51 in one series.

When the medical image displayed on the display screen of the monitor 150 is a dynamic imaging image obtained by continuously radiating the dynamics of the target part having periodicity along the time axis, the scroll bar 55 is set to the periodicity. Correspondingly, it is preferable that the display is color-coded.
The color coding may be color coding using a plurality of colors, but in the present embodiment, the color-coded display on the scroll bar is expressed by at least one of shades of a single color or light and dark. As a result, even when the monitor 150 supports only monochrome, color-coded display can be appropriately and easily understood.

In the present embodiment, the case where the target site having periodicity is the lung field of a person and the dynamic photographed image is obtained by continuously radiating the dynamics showing the human respiration along the time axis. It is an example.
The scroll bar 55 of the present embodiment is color-coded for each half-breathing period including the inspiratory period or the expiratory period.
Specifically, the scroll bar 55 is divided into a plurality of blocks 552, 553 ..., And each block 552, 553 is alternately color-coded (here, gray and white). In each block, for example, the gray block 552 corresponds to the image showing the inspiratory period, the white block 553 corresponds to the image showing the expiratory period, and the block 552 representing the inspiratory period and the block 553 representing the expiratory period. One set corresponds to a period of one breath consisting of an inspiratory period and an expiratory period (period β in FIG. 3 and the like).

Usually, one series of inspection images includes images corresponding to multiple breaths. Therefore, a plurality of blocks 552 and 553 are alternately arranged on the scroll bar 55, and the scroll bar 55 has a striped pattern as a whole.
The blocks 552, 553 and the cursor 551 on the scroll bar 55 allow the user to intuitively recognize the number of images (frame image FI) in the series currently being displayed on the display screen. It has become.
The color-coded display on the scroll bar 55 is not limited to the one illustrated here. For example, instead of displaying the period of half-breathing as one block in color, it may be displayed in color for each period of one breath consisting of the inspiratory period and the expiratory period.
The color-coded display on the scroll bar 55 is a half-breathing period consisting of an inspiratory period or an expiratory period determined by the control means 11 from the position of the diaphragm, or one breathing period in which the inspiratory period and the expiratory period are set as one set. It is done according to the period.

[Specify playback range]
The input means 13 as the reproduction range designation unit specifies the image itself displayed on the display means 15, the scroll bar 55 corresponding to the image, the graph corresponding to the image, and the image. Includes at least one of those for entering or selecting a number to be entered.
Hereinafter, the specification of the reproduction range of the dynamic photographed image by each method will be described in detail.

First, when the input means 13 as the playback range designation unit specifies the playback range by designating the image itself displayed on the display means 15, the pointer 554 is displayed on the display screen, for example, as shown in FIG. Is displayed, and this is moved onto the frame image FI by the input means 13 such as a mouse, and a selection operation such as clicking is performed.
As a result, an image for one cycle including the frame image FI displayed in the image display area 51 of the display means 15 is designated as the reproduction range.
For example, in FIG. 4, one series consisting of a frame image FI having a total of 65 frames, in which the dynamics showing human respiration are continuously radiographed along the time axis with the human lung field as the target site. It shows the case where the frame image FI of the frame number 17 is selected from the series when the dynamic photographed image is acquired.
In this case, the image for one cycle including the frame image FI of frame number 17, that is, the image corresponding to the period β for one breath consisting of the inspiratory period and the expiratory period is designated as the reproduction range.
When one frame image FI is selected, the specified reproduction range is not limited to the image corresponding to the period β of one breath, for example, the period of half breath including the selected frame image FI. It may be an image corresponding to. The user may be able to set what range should be set as the playback range when one frame image FI is selected.
That is, the reproduction range of the dynamic photographed image is the range obtained by extracting a specific range of frames from the entire continuous frame image. For example, if there are 100 frames in total, it is a continuous frame between the 20th frame and the -40th frame. The reproduction range of the dynamic photographed image is, in principle, continuous frames, but frames can be thinned out regularly. In the above example, the playback range is 20, 21, 22, 23 ... And up to the 40th frame, but the playback range is thinned out for each frame (20, 22, 24). , 26 ... 40) is also possible.

Further, when the input means 13 as the reproduction range designation unit specifies the reproduction range in the scroll bar 55 corresponding to the image, for example, as shown in FIG. 5, a pointer 554 is displayed on the display screen, and this is displayed. The input means 13 such as a mouse moves the scroll bar 55 to an arbitrary position, and performs a selection operation such as clicking.
As a result, regardless of the frame image FI displayed in the image display area 51 of the display means 15, the range for one cycle including the selected position on the scroll bar 55, that is, one set of blocks 552, 553 is formed. The image corresponding to the period β for one breath is designated as the reproduction range.
It should be noted that the reproduction range specified in this case is not limited to the image corresponding to the period β for one breath, as described above.

Further, as shown in FIG. 6, the display means 15 of the present embodiment can display a graph corresponding to the image. In FIG. 6, the graph shows the number of frames (0 to n) of the frame image FI constituting one series on the x-axis, and the height (position) α of the diaphragm on the y-axis.
The input means 13 as the reproduction range designation unit may specify the reproduction range in the graph as shown in FIG.
In this case, for example, as shown in FIG. 6, a pointer 554 is displayed on the graph displayed on the display means 15, the pointer 554 is moved to an arbitrary position on the graph by the input means 13 such as a mouse, and a click or the like is selected. Do the action.
As a result, regardless of the frame image FI displayed in the image display area 51 of the display means 15, the range for one cycle including the selected position on the graph, that is, one of the height α of the diaphragm that moves up and down. The image corresponding to the period β for one breath from the peak p1 to the next peak p2 is designated as the reproduction range.

Further, the input means 13 which is a reproduction range designation unit may input the frame number or the like of any of the frame image FIs constituting one series by using a keyboard or the like.
As a result, regardless of the frame image FI displayed in the image display area 51 of the display means 15, the range for one cycle including the frame image FI of the input frame number, that is, the frame number 17 is input. The image corresponding to the period β for one breath including the 17th frame image FI is designated as the reproduction range.
In these cases as well, the specified reproduction range is not limited to the image corresponding to the period β for one breath, and may be appropriately set as described above.

The designation of the reproduction range by the input means 13 which is the reproduction range designation unit is not limited to the case where one point (or one frame image FI) is selected as described above.
For example, as shown in FIGS. 7 and 8, when the user selects the image of the frame number 14 (see FIG. 7) and the image of the frame number 27 (see FIG. 8) by operating the input means 13, 1 Regardless of the range of the breathing period β, the image from the frame number 14 to the image of the frame number 27 is designated as the reproduction range.

Further, as shown in FIGS. 7 and 8, when the position of the cursor 551 is specified at two positions on the scroll bar 55 corresponding to the image by the input means 13 as the reproduction range designation unit, the period β for one breath is set. Regardless of the range, the corresponding image is designated as the playback range between the two designated positions of the cursor 551.
For example, in the case of FIGS. 7 and 8, of the period β of one breath, the image of the period of half breath corresponding to block 552 is the reproduction range.

Further, the display means 15 displays a graph corresponding to the image, and as shown in FIG. 9, the input means 13 as the reproduction range designation unit displays two points on the graph (points ps and pe in FIG. 9). The playback range may be specified by specifying.
In this case, an image corresponding to the period γ between points ps and pe, which is different from the period β for one breath, is designated as the reproduction range.

Further, as shown in FIG. 10, the display means 15 may display a frame number input screen having a numerical value input unit 561 and a decision button 562.
In this case, the user may input the frame number of the frame image FI into the numerical input unit 561 using a keyboard or the like as the input means 13, and operate the enter button 562 to specify the reproduction range.
FIG. 10 illustrates a case where the frame number 14 is input to the numerical value input unit 561 for inputting the start position of the reproduction range, and the frame number 40 is input to the numerical value input unit 561 for inputting the end position of the reproduction range.
As a result, the frame image FI of frame numbers 14 to 40 is designated as the reproduction range regardless of the period β for one breath.
The layout, display items, and the like of the input screen displayed on the display means 15 are not limited to the illustrated examples.

The period of one cycle such as the period β for one breath is determined by the control means 11 performing image analysis or the like on the frame image FI. Therefore, it is not always correct, and it may be recognized with a deviation of several frames.
In addition, there may be a range of images that the user (doctor, etc.) who interprets the image wants to observe in particular detail regardless of the period β or the like for one breath.
In such a case, more accurate interpretation and diagnosis can be realized by playing back the moving image within the range specified by the user (doctor or the like).

[About the operation of the image display device and the image display method]
Next, the image display method in the present embodiment will be described with reference to FIGS. 11 and 12.
When a user (doctor or the like) wants to read an image on the image display device 1, first, the display means 15 of the image display device 1 is made to display an inspection list screen or the like.
Then, by designating the test or the like that the user (doctor or the like) wants to read on the display screen or the like, the desired test to be read is selected as shown in FIG. 11 (step S1).
When the inspection is selected, the image display device 1 sends an image acquisition request to the image management server 3, and the image management server 3 extracts the image data of the requested inspection from the medical image DB 31 and communicates with the communication network N. Is transmitted to the image display device 1 via.
On the image display device 1 side, medical image data and incidental information incidental to the medical image data are acquired via the input / output interface 14 which is an image acquisition unit (step S2).
When the medical image is acquired, the control means 11 as the determination control unit determines whether or not the acquired medical image includes the dynamic photographed image (step S3). Then, when it is determined that the medical image is not included (step S3; NO), the control means 11 as the display control unit displays the acquired medical image as it is on the monitor of the display means 15 (high definition for interpretation). Display on monitor) 150 (step S4).
On the other hand, when the control means 11 as the determination control unit determines that the acquired medical image includes the dynamic photographed image (step S3; YES), the control means 11 as the display control unit The dynamic captured image is automatically reproduced as a moving image on the display means 15, and the moving image is displayed on the monitor (high-definition monitor for image interpretation) 150 (step S5).

When narrowing down the range for playing back a moving image, as shown in FIG. 12, a user (doctor) is used in an input means 13 (playback range designation unit) including a touch panel, a keyboard, etc. integrally formed with the monitor 150 of the display means 15. Etc.) to accept the designation of the reproduction range (step S11).
When the designation of the reproduction range is input, the control means 11 determines whether or not it specifies the reproduction range at one point (step S12).
When the reproduction range is designated by one point (step S12; YES), the control means 11 performs dynamic imaging corresponding to a period of one breath including the specified image (period β in FIG. 3 and the like). The first frame image FI and the last frame image FI of the image are specified (step S13).
Then, the control means 11 narrows down the reproduction range between the specified first frame image FI and the last frame image FI (step S14), and first displays the first frame image FI on the display means 15. It is displayed on the screen (image display area 51) (step S15).

While the reproduction display (moving image reproduction) of the dynamic photographed image is being performed, the control means 11 determines whether or not the displayed frame image FI is less than the last frame image FI (step S16). For example, when the frame image FI of frame number 27 is set as the reproduction range from the frame image FI of frame number 14, it is determined whether or not the displayed frame image FI has reached the 27th position.
When the displayed frame image FI is the last frame image FI (for example, when the frame image FI of frame number 27 is being reproduced in the above example. Step S16; NO), the process returns to step S15. It is reproduced again from the first frame image FI (frame image FI of frame number 14 in the above example) (loop reproduction).
When the last frame image FI set as the reproduction range (the frame image FI of the frame number 27 in the above example) is reproduced, the reproduction may be terminated without looping.
On the other hand, when the displayed frame image FI is not the last frame image FI (for example, when the frame image FI of frame number 18 is being reproduced. Step S16; YES), the next frame image FI (for example, frame number) 19 frame image FI) is displayed (step S17).
During video playback, the control means 11 determines whether or not the interruption operation has been performed by the user (step S18), and if the interruption operation has not been performed (step S18; NO), the process returns to step S16. repeat.
On the other hand, when the interruption operation is performed (step S18; YES), the moving image reproduction process by the image display device 1 is terminated.

Further, when the reproduction range is not specified by one point (step S12; NO), that is, when the user specifies the reproduction range by two points by the input means 13, the control means 11 has the specified range. The first frame image FI and the last frame image FI of the dynamic captured image are specified (step S19). Then, the reproduction range is narrowed down between the specified first frame image FI and the last frame image FI (step S14), and first, the first frame image FI is displayed on the display screen (image display area) of the display means 15. It is displayed in 51) (step S15). Since the subsequent processing is the same as the case where the reproduction range is specified by one point, the description thereof will be omitted.

[effect]
As described above, the image display device 1 according to the present embodiment acquires the medical image obtained by radiography via the input / output interface 14 which is the image acquisition unit, and the control means 11 as the judgment control unit is concerned with the medical image. It is determined whether or not the medical image includes the dynamic imaging image obtained by continuously radiating the dynamics of the target site along the time axis, and the dynamic imaging image is included by the control means 11 which is the determination control unit. When it is determined that the display control unit 11 is used, the control means 11 as the display control unit automatically reproduces the dynamic captured image on the monitor 150 of the display unit 15 which is the display unit.
As a result, when the dynamic photographed image is acquired, the moving image playback is automatically started on the display screen of the monitor 150, and the image interpretation can be started quickly without the trouble of the user (doctor, etc.), and the operability. Is excellent.

Further, in the present embodiment, when the dynamic photographed image obtained by continuously radiating the dynamics of the target portion along the time axis is acquired via the input / output interface 14 which is an image acquisition unit, the reproduction range A reproduction range of the dynamic photographed image is designated by the input means 13 which is a designated unit, and the dynamic photographed image is reproduced and displayed on the monitor 150 of the display means 15 which is a display unit in the designated reproduction range.
The user (doctor, etc.) can confirm the state of the target part by playing back the dynamic photographed image as a moving image. For example, when the target site is the lungs or the heart, the movement of the lungs or the heart can be observed by checking the moving image composed of each frame image FI taken dynamically on the monitor 150, and the function of the lungs ( It is possible to appropriately diagnose whether there is a place where the ventilation function, pulmonary blood flow function, etc.) is deteriorated or where the heartbeat is abnormal.
In this case, since the reproduction range can be narrowed down in the present embodiment, even if the dynamic photographed image consists of a huge number of frame image FIs, the moving image is narrowed down to the range that the user (doctor, etc.) deems necessary for diagnosis. Reproduction can be performed, and appropriate interpretation / diagnosis can be performed quickly and efficiently.

Further, in the present embodiment, when the input / output interface 14 which is an image acquisition unit widely acquires a medical image obtained by radiography, it is determined and controlled whether or not the acquired medical image includes a dynamic image. When the control means 11 which is a unit determines and the control means 11 determines that the dynamic photographed image is included, the reproduction range can be specified by the input means 13 which is the reproduction range specifying unit for the dynamic photographed image. ing.
Therefore, even when a wide range of medical images in which a dynamic image and other images are mixed are acquired, it is possible to appropriately reproduce a moving image of the dynamic image obtained by photographing the dynamics of the target site, and perform quick interpretation. be able to.

Further, in the present embodiment, the dynamic photographed image is obtained by continuously radiating the dynamics of the target portion having periodicity along the time axis.
Therefore, it is possible to appropriately interpret an image that captures the movement of the lung field that repeats breathing and the movement of the heart that repeats beating.

Further, in the present embodiment, the input means 13 which is the reproduction range designation unit corresponds to the one which specifies the image itself displayed on the monitor 150 which is the display unit, the one which is designated by the scroll bar 55 corresponding to the image, and the image. It includes either the one specified in the graph to be specified or the one to input or select the numerical value corresponding to the image.
This makes it possible to select a specification method that suits the needs of the user (doctor, etc.), has excellent operability, easily and appropriately specifies the playback range, and interprets the image necessary for diagnosis. can.

Further, in the present embodiment, the control means 11 as the display control unit reproduces the dynamic photographed image when the interruption operation is performed after the reproduction of the dynamic photographed image is started on the monitor 150 which is the display unit. Suspend.
Therefore, when there is an image of interest during image interpretation, it is possible to stop moving image playback, observe the image precisely, and perform appropriate image interpretation.

Further, in the present embodiment, the target site is the lung field of a person including the diaphragm, and in this case, the input means 13 which is the regeneration range designation unit corresponds to the period of one breath of the person consisting of the inspiratory period and the expiratory period. Specify the dynamic shot image to be played as the playback range.
As a result, the movement of the lung field can be observed in units of one breath, and precise interpretation can be performed. Therefore, it is possible to accurately diagnose the presence or absence of deterioration of lung function, the state after treatment, and the like.

Further, in the present embodiment, the target site is the lung field of a person including the diaphragm, and in this case, the input means 13 which is the regeneration range designation unit corresponds to the period of half-breathing of the person consisting of the inspiratory period or the expiratory period. Specify the dynamic shot image to be played as the playback range.
As a result, the movement of the lung field can be observed in a short unit of half a breath, and the interpretation can be performed more quickly.

Further, in the present embodiment, when the monitor 150, which is a display unit, is provided with the scroll bar 55 corresponding to the image, the dynamics of the target portion having periodicity in the dynamic photographed image are continuously radiographed along the time axis. In the case of the obtained product, the scroll bar 55 is color-coded according to the period.
As a result, the user (doctor or the like) can intuitively grasp the position of the image displayed on the monitor 150 just by looking at the scroll bar 55, and can read the image quickly and efficiently.

Further, when the monitor 150 which is a display unit is provided with the scroll bar 55 corresponding to the image, the dynamic photographed image is obtained by continuously radiating the dynamics indicating the respiration of a person along the time axis. In this case, the scroll bar 55 may be color-coded for each period of one breath including the inspiratory period and the expiratory period.
In this case, the user (doctor, etc.) intuitively grasps the position of the image displayed on the monitor 150 in the cycle of one breath, etc. just by looking at the scroll bar 55. It is possible to read images quickly and efficiently.

Further, when the monitor 150 which is a display unit is provided with the scroll bar 55 corresponding to the image, the dynamic photographed image is obtained by continuously radiating the dynamics indicating the respiration of a person along the time axis. In this case, the scroll bar 55 may be color-coded for each half-breathing period consisting of the inspiratory period or the expiratory period.
In this case, the user (doctor, etc.) can intuitively grasp the position of the image displayed on the monitor 150 in the half-breathing cycle by simply looking at the scroll bar 55. It is possible to read images quickly and efficiently.

Further, the color-coded display on the scroll bar may be represented by at least one of a single color shade or light and dark.
By doing so, even when the display unit is the monitor 150 which does not correspond to the color image and can only display in monochrome, the color-coded display can be appropriately and easily understood.

[Modification example]
Needless to say, the present invention is not limited to the above-described embodiment, and can be appropriately modified as long as it does not deviate from the gist of the present invention.

For example, in the present embodiment, the image management server 3 has a medical image DB 31 composed of a hard disk or the like, and the medical image data and incidental information of the medical image are stored in the medical image DB 31. However, the image management server and the medical image DB may be any as long as they can store and manage the medical images acquired by the medical image capturing device 2, and are not limited to the configurations illustrated here.
For example, in recent years, with the spread of cloud servers, all data may be stored and managed in a data center outside the medical facility, and only the latest data may be stored on the medical facility side. In this case, the image display device 1 of the source facility that requests the acquisition of medical images in response to the user's operation directly accesses a storage server (cloud server) (not shown) that stores and manages images, and is the target of medical cooperation. You may acquire the image data by selecting the medical image to be used.

Further, in the present embodiment, when the monitor 150 which is a display unit is provided with the scroll bar 55 corresponding to the image, the case where the scroll bar 55 is displayed in different colors corresponding to the cycle of one breath of a person or the like is illustrated. However, the color-coded display on the scroll bar 55 is not limited to the one corresponding to the cycle.
For example, the scroll bar 55 may be color-coded according to the reproduction position of the dynamic photographed image.
In this case, the user can intuitively see the number of the dynamic captured image consisting of the plurality of frame image FIs that is currently being played on the monitor 150 by simply looking at the scroll bar. It is possible to easily narrow down the images to be confirmed.

1 Image display device 2 Medical image capturing device 3 Image management server 11 Control means 13 Input means (reproduction range designation unit)
14 Input / output interface (image acquisition unit)
15 Display means 31 Medical image DB
100 Medical Imaging System 150 Monitor FI Frame Image

Claims (16)

An image acquisition unit that acquires a dynamic image having a plurality of frame images obtained by photographing the dynamics of the subject by irradiating the subject with radiation, and an image acquisition unit.
A designation unit that specifies a display frame image by designating the frame image or information corresponding to the frame image from the dynamic image acquired by the image acquisition unit.
A display control unit that controls the display unit so as to display the dynamic image as a moving image in a specific range including the display frame image and the frame image before the display frame image on the time axis.
Equipped with a,
The image acquisition unit can acquire a medical image obtained by radiography, and can acquire the medical image.
A determination control unit for determining whether or not the dynamic image is included in the medical image acquired by the image acquisition unit is further provided.
The designation unit is characterized in that when it is determined by the determination control unit that the dynamic image is included, the frame image or the information corresponding to the frame image can be designated from the dynamic image. Image display device. The image display device according to claim 1, wherein the dynamic image is obtained by continuously radiating the dynamic with periodicity along a time axis. In the designation unit, an image itself displayed on the display unit is specified, a scroll bar corresponding to the image is specified, a graph corresponding to the image is specified, and a numerical value corresponding to the image is input or selected. The image display device according to claim 1 or 2, wherein the image display device includes any of the above. The present invention is claimed from claim 1, wherein the display control unit interrupts the moving image display of the dynamic image when the interruption operation is performed after the moving image display of the dynamic image is started on the display unit. Item 3. The image display device according to any one of items 3. The dynamic image is an image including the lung field of a person including the diaphragm.
The specific range, the image display apparatus according to any one of claims 1 to 4, characterized in that the range corresponding to one period of the respiration component of the subject as the intake period and expiration periods .. The dynamic image is an image including the lung field of a person including the diaphragm.
The specific range, the image display apparatus according to any one of claims 1 to 4, characterized in that the range corresponding to a period of a half respiratory component of the subject as the intake period or expiration period .. The display unit displays a scroll bar corresponding to the image, and displays the scroll bar.
The image display device according to any one of claims 1 to 6 , wherein the scroll bar is color-coded and displayed according to a reproduction position of the dynamic image. When the dynamic image is obtained by continuously radiating the dynamic image having periodicity along the time axis.
The image display device according to claim 7 , wherein the scroll bar is color-coded according to a cycle. When the dynamic image is obtained by continuously radiating the dynamics showing human respiration along the time axis,
The scroll bar, the image display apparatus according to claim 7 or claim 8, characterized in that it is displayed in different colors for each period of the respiratory component including inspiration period and expiration periods. When the dynamic image is obtained by continuously radiating the dynamics showing human respiration along the time axis,
The scroll bar, the image display apparatus according to claim 7 or claim 8, characterized in that it is displayed in different colors for each period of the half respiratory component comprising an intake period, or expiration period. The image display device according to any one of claims 7 to 10 , wherein the color-coded display on the scroll bar is represented by at least one of shades of a single color or light and dark. The display controller, the display frame images, and the said dynamic image in a range including the front and rear frame image display frame images from claim 1 for controlling the display unit so as to display video in the time axis according to claim 11 The image display device according to any one item. The image display device according to any one of claims 1 to 12 , wherein the display control unit controls the display unit so as to loop the dynamic image and display the moving image within the range displayed by the display control unit as a moving image. .. An image acquisition unit that acquires a dynamic image having a plurality of frame images obtained by photographing the dynamics of the subject by irradiating the subject with radiation, and an image acquisition unit.
A designation unit that specifies a display frame image by designating the frame image or information corresponding to the frame image from the dynamic image acquired by the image acquisition unit.
A display control unit that controls the display unit so as to display the dynamic image as a moving image in a specific range including the display frame image and the frame image before the display frame image on the time axis.
Equipped with a,
A judgment control unit for determining whether or not the dynamic image is included is provided.
The display controller, the display if the specified frame image is determined to include the dynamic image by performed and the determination control unit, moving image display the dynamic image on the display unit by the specifying unit images display device Ru is. An image acquisition step of acquiring a dynamic image having a plurality of frame images obtained by photographing the dynamics of the subject by irradiating the subject with radiation, and an image acquisition step.
A designation step of designating a display frame image by designating the frame image or information corresponding to the frame image from the dynamic images acquired in the image acquisition step.
A display step of displaying the dynamic image as a moving image in a specific range including the display frame image and the frame image before the display frame image on the time axis.
Only including,
In the image acquisition step, it is possible to acquire a medical image obtained by radiography, and it is possible to acquire a medical image.
A determination step for determining whether or not the dynamic image is included in the medical image acquired in the image acquisition step is further provided.
The designation step is characterized in that, when it is determined in the determination step that the dynamic image is included, the frame image or the information corresponding to the frame image can be designated from the dynamic image. Image display method. On the computer of the image display device,
An image acquisition function for acquiring a dynamic image having a plurality of frame images obtained by photographing the dynamics of the subject by irradiating the subject with radiation, and an image acquisition function.
A designation function for designating a display frame image by designating the frame image or information corresponding to the frame image from the dynamic images acquired by the image acquisition function.
A display function for displaying the dynamic image as a moving image in a specific range including the display frame image and the frame image before the display frame image on the time axis.
Realized ,
The image acquisition function can acquire a medical image obtained by radiography, and can acquire the medical image.
On the computer of the image display device,
Further, a determination function for determining whether or not the dynamic image is included in the medical image acquired by the image acquisition function is realized.
The designation function is characterized in that, when it is determined by the determination function that the dynamic image is included, the frame image or the information corresponding to the frame image is designated from the dynamic images. Image display program to do.

Images