JP6572572B2 - X-ray inspection equipment - Google Patents

Description

  The present invention relates to an X-ray examination apparatus such as an X-ray fluoroscopic imaging table provided with a compression cylinder that compresses a diagnosis site of a subject.

  When performing X-ray examination by performing X-ray fluoroscopy of the subject's digestive organs, a compression cylinder that compresses a diagnostic region such as the abdomen of the subject is used. The compression cylinder is movable between a pressing position for pressing the diagnosis site of the subject and a storage position retracted from the pressing position. A subject who has taken a contrast medium such as barium is placed on the top plate or standing on the front surface of the top plate while pressing the region of interest with a compression cylinder placed at the compression position. Shooting is executed.

  In Patent Document 1, when performing X-ray imaging by placing a subject on a top plate, a pressure force according to the moving direction of the top plate is detected by a pressure sensor provided on the compression cylinder, An X-ray fluoroscopic apparatus that displays a warning when the detected value is equal to or greater than a set value is disclosed. Further, in Patent Document 2, a space around a subject is secured when a compression cylinder is not used, and an X-ray detector and a compression cylinder are used to facilitate operation of the compression cylinder when a compression cylinder is used. An X-ray imaging apparatus is disclosed that includes a connecting portion that performs connection to and release from a tube.

JP 2004-33421 A Japanese Patent No. 5218677

  When the subject is in a mode other than the compression mode in which compression imaging is performed on the subject, the subject is placed at a position facing the top plate, and the compression barrel is placed at the compression position and the X-ray When moving together with the tube, there is a possibility that the compression cylinder arranged at the compression position and the subject arranged at a position facing the top plate come into contact with each other. When the compression cylinder moving at high speed collides with the subject, the subject may be damaged.

  The present invention has been made to solve the above-described problem, and can suppress the contact between the compression cylinder and the subject and effectively prevent the subject from being damaged. An object is to provide an inspection device.

According to the first aspect of the present invention, there is provided a top plate that abuts the subject and defines the imaging position of the subject, an X-ray tube, and X-rays that have been irradiated from the X-ray tube and passed through the subject. An image system comprising an X-ray detector for detection, a moving mechanism for relatively moving the top plate and the image system, and moving together with the image system, and pressing the diagnosis site of the subject A position determination unit that determines whether or not the compression cylinder is in the storage position in an X-ray inspection apparatus including a compression cylinder that is movable between a pressing position to be moved and a storage position retracted from the pressing position. When the position determination unit determines that the compression cylinder is not in the storage position, the position determination unit determines the relative movement speed of the top plate and the video system by the movement mechanism. movement control for more speed when it is determined that the storage position and a low speed Characterized by comprising a and.

According to a second aspect of the present invention, in the first aspect of the invention, when the position determination unit determines that the compression cylinder is not in the storage position, the position determination unit determines whether the compression unit is in the compression state. Until the cylinder is determined to be in the storage position, the relative movement speed of the top plate and the video system by the moving mechanism is determined when the position determination unit determines that the compression cylinder is in the storage position. Slower than speed.

The invention according to claim 3 further comprises selection means for selecting either the compression mode using the compression cylinder or the normal mode not using the compression cylinder in the invention according to claim 1, and the movement control unit. When the normal mode is selected and the compression cylinder is not in the storage position, the position determination unit indicates the relative movement speed of the top plate and the video system by the movement mechanism. Is slower than the speed at which it is determined that is in the storage position .

According to a fourth aspect of the present invention, in the first or second aspect of the present invention, video system movement instruction means for instructing relative movement between the top plate and the video system by the moving mechanism, and the compression An operation unit for selecting a compression mode for performing X-ray imaging by pressing the diagnostic part of the subject with a cylinder, a mode determination unit for determining whether or not the compression mode is selected by the operation unit, and the position When the determination unit determines that the compression cylinder is not in the storage position, and the mode determination unit determines that the compression mode is not selected, while there is an instruction to move by the video system movement instruction unit, It further has compression cylinder movement control means for moving the compression cylinder toward the storage position.

According to the first aspect of the present invention, when the compression cylinder is not disposed at the storage position, the relative movement speed of the top plate and the video system is indicated, and the position determination unit indicates that the compression cylinder is at the storage position. Since the speed is lower than the determined speed , the possibility of contact between the compression cylinder and the subject is reduced, and it is possible to prevent the subject from being damaged even if contacted temporarily. .

According to the second aspect of the present invention, when the compression cylinder is not disposed at the storage position, the position determination unit determines the relative moving speed of the top plate and the video system until the compression cylinder is stored. Since the speed of the compression cylinder is lower than the speed at which it is determined that the compression cylinder is in the storage position, the possibility of contact between the compression cylinder and the subject is reduced. This can be prevented.

According to the third aspect of the present invention, when the normal mode is selected and the compression cylinder is not in the storage position, the position determination unit compresses the relative moving speed of the top plate and the video system by the moving mechanism. Since the speed is lower than the speed at which the cylinder is determined to be in the storage position, the possibility of contact between the compression cylinder and the subject is reduced, and even if contact is made, the subject will be damaged. It becomes possible to prevent.

  According to the fourth aspect of the present invention, when the compression cylinder is not arranged at the storage position even though the compression mode is not selected, the relative movement between the top board and the video system is instructed. The compression cylinder can be moved toward the storage position.

It is a front view of an X-ray inspection apparatus when the top plate 13 is arrange | positioned in a supine position. It is a side view of an X-ray inspection apparatus when the top plate 13 is arrange | positioned in a supine position. It is a front view of a X-ray inspection apparatus when the top plate 13 is arrange | positioned in a standing position. It is a side view of an X-ray inspection apparatus when the top plate 13 is arrange | positioned in a standing position. 2 is a schematic diagram of a compression cylinder mechanism 20. FIG. 2 is a schematic diagram of a compression cylinder mechanism 20. FIG. 3 is a perspective view of an operation unit 50. FIG. It is a block diagram which shows the main control systems of the X-ray inspection apparatus which concerns on this invention. It is a flowchart which shows 1st Embodiment of the moving operation | movement of the imaging | video type | system | group in the X-ray inspection apparatus which concerns on this invention. It is a flowchart which shows 2nd Embodiment of the moving operation | movement of the imaging | video type | system | group in the X-ray inspection apparatus which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 are schematic views of an X-ray inspection apparatus according to the present invention. 1 is a front view of the X-ray inspection apparatus when the top plate 13 is disposed at the prone position, and FIG. 2 is a side view of the X-ray inspection apparatus when the top plate 13 is disposed at the prone position. FIG. 3 is a front view of the X-ray inspection apparatus when the top plate 13 is disposed at the standing position, and FIG. 4 is a side view of the X-ray inspection apparatus when the top plate 13 is disposed at the standing position. FIG. In these drawings, FIG. 2 shows a state in which the compression cylinder mechanism 20 is arranged at a compression position where the compression cylinder 21 compresses the diagnosis site of the subject. 1, 3, and 4 show a state in which the compression cylinder mechanism 20 is disposed at the storage position in the X-ray tube holding member 15.

  This X-ray inspection apparatus is called an X-ray fluoroscopic table, and includes a top plate 13, an X-ray tube holding member 15, and an X-ray tube disposed at the tip of the X-ray tube holding member 15. 11 and an X-ray detector 12 having an X-ray detector such as a flat panel detector or an image intensifier (II) disposed on the opposite side of the X-ray tube 11 with respect to the top plate 13. Prepare. The X-ray tube holding member 15 is provided with a compression cylinder mechanism 20.

  The top plate 13, the X-ray tube holding member 15 and the X-ray tube 11 are arranged so that the surface of the top plate 13 shown in FIG. 1 and FIG. It can be rotated between the facing position and the standing position shown in FIGS. 3 and 4 where the surface of the top plate 13 faces in the vertical direction. Further, the rotation mechanism 16 itself can be moved up and down with respect to the main column 17 erected on the base plate 18.

  When the top 13 is in the prone position, X-ray fluoroscopy is performed on the subject in the prone position. At this time, the subject is placed on the top board 13. When performing X-ray fluoroscopy of the digestive organ of the subject, the affected part of the subject is compressed by the compression cylinder 21 in the compression cylinder mechanism 20 as necessary, as shown in FIG. When the top 13 is in the standing position, X-ray fluoroscopy is performed on the subject in the standing position. At this time, the subject stands up in front of the top board 13. And when performing X-ray fluoroscopy of a subject's digestive organ, the affected part of a subject is compressed by the compression cylinder 21 in the compression cylinder mechanism 20 as needed.

  5 and 6 are schematic views of the compression cylinder mechanism 20. 5 shows a state where the compression cylinder mechanism 20 is in the compression position, and FIG. 6 shows a state where the compression cylinder mechanism 20 is in the storage position.

  The compression cylinder mechanism 20 includes a first arm 22 having a compression cylinder 21 disposed at the tip thereof, and a second arm 23 and a third arm 24 that are coupled to the first arm 22 via respective shafts. A link structure. The compression cylinder mechanism 20 includes a guide rail 25 having a straight portion extending in the vertical direction and a curved portion curved from the straight portion, and a plurality of bearings 27 that abut on the guide rail 25. A slide member 26 slidable along is provided. The end of the third arm 24 opposite to the first arm 22 is fixed to the slide member 26 so as to be swingable via a shaft. An abutting portion 28 that abuts against the guide rail 25 is disposed at the end of the second arm 23 opposite to the first arm 22. The second arm 23 is also fixed to the slide member 26 so as to be swingable via a shaft. In addition, the contact portion 28 in the second arm 23 is configured to always contact the end surface of the guide rail 25 by the action of the spring 29.

  The compression cylinder mechanism 20 includes a drive pulley 32 that rotates by driving of a motor 34, a driven pulley 31, and a belt 33 wound around the drive pulley 32 and the driven pulley 31. The slide member 26 is connected to the belt 33. For this reason, the slide member 26 moves up and down along the straight portion of the guide rail 25 by driving the motor 34.

  In a state where the contact portion 28 disposed at the end portion of the second arm 23 is in contact with the linear portion of the guide rail 25 by raising and lowering the slide member 26, the second arm 23 is moved as shown in FIG. A force to rotate in the clockwise direction works, and the first arm 22 and the second arm 23 extend in a substantially linear shape. At this time, the compression cylinder 21 has moved to the pressing position, and the affected area of the subject can be compressed by the compression cylinder 21. When the slide member 26 is moved up and down by driving the motor 34 in this state, the compression cylinder 21 is moved up and down in the range where the contact portion 28 is in contact with the linear portion of the guide rail 25. It will be. As a result, the compression state of the affected area of the subject by the compression cylinder 21 can be changed.

  On the other hand, in the state in which the contact portion 28 disposed at the end of the second arm 23 is in contact with the curved portion of the guide rail 25 by raising and lowering the slide member 26, as shown in FIG. The force which rotates 23 counterclockwise acts, and the 1st arm 22 and the 2nd arm 23 will be in the state mutually bent. In this state, the compression cylinder 21 has moved to the storage position. The movement of the compression cylinder 21 to the storage position is detected by a sensor 30 that contacts the slide member 26.

  The compression cylinder mechanism 20 is attached to the X-ray tube holding member 15 and moves relative to the top plate 13 together with the X-ray tube 11.

  FIG. 7 is a perspective view of the operation unit 50 for performing operations such as movement of the top plate 13 and the compression cylinder 21.

  The operation unit 50 includes a compression cylinder moving lever 51, a video system moving lever 52, a compression mode selection button 53, and a touch panel type display unit 54. The compression cylinder moving lever 51 is for moving the compression cylinder 21 between the compression position shown in FIG. 5 and the storage position shown in FIG. By tilting the compression cylinder moving lever 51 in the direction of arrow A shown in FIG. 7, the compression cylinder 21 reciprocates between the compression position shown in FIG. 5 and the storage position shown in FIG. The video system moving lever 52 is for moving the video system composed of the X-ray tube 11 and the X-ray detector 12 in the horizontal direction. When the video system moving lever 52 is moved in the direction of arrow B shown in FIG. 7, the video system reciprocates in the short direction (the short side direction of the top plate 13) with respect to the top board 13, and the video system moving lever When 52 is moved in the direction of arrow C shown in FIG. 7, the video system reciprocates in the longitudinal direction (long side direction of the top plate 13) with respect to the top plate 13. Further, the compression mode selection button 53 is for switching between a compression mode using the compression cylinder 21 and a normal mode not using the compression cylinder 21. When the compression mode selection button 53 is pressed, the compression mode is selected. When the compression mode selection button 53 is pressed again, the compression mode is canceled and the normal mode is selected.

  FIG. 8 is a block diagram showing a main control system of the X-ray inspection apparatus according to the present invention.

  The X-ray inspection apparatus has a control unit 60 that controls the entire apparatus. The control unit 60 is connected to the X-ray tube 11, the X-ray detection unit 12, and the operation unit 50 described above. The control unit 60 also connects the X-ray tube 11 and the X-ray detection unit 12 to motors 72 and 73 that move the X-ray tube 11 and the X-ray detection unit 12 in the short direction and the long direction relative to the top plate 13. Connected with. Further, the control unit 60 is connected to a compression cylinder driving unit 75 coupled to the sensor 30 and the motor 34 shown in FIGS. 5 and 6. The X-ray tube 11 and the X-ray detection unit 12 may be moved individually or may be moved integrally.

  In addition, the control unit 60 includes a mode determination unit 61 that determines whether or not the compression mode is selected by the operation unit 50, a position determination unit 62 that determines whether or not the compression cylinder 21 is in the storage position, A movement control unit 63 that controls the moving speed of the video system based on the determination results of the position determination unit 62 and the mode determination unit 61 and a compression cylinder drive control unit that controls the compression cylinder drive unit 75 are provided.

  Next, the operation of controlling the moving speed of the video system by the X-ray inspection apparatus having the above configuration will be described. FIG. 9 is a flowchart showing the first embodiment of the moving operation of the video system in the X-ray inspection apparatus according to the present invention.

  Prior to the operation, the operator selects whether to perform X-ray fluoroscopy in either a compression mode using the compression cylinder 21 or a normal mode not using the compression cylinder 21. At this time, the operator operates the compression mode selection button 53 in the operation unit 50 shown in FIG.

  In this state, the video system movement for moving the video system composed of the X-ray tube 11 and the X-ray detection unit 12 relative to the top board 13 by operating the video system moving lever 52 in the operation unit 50 indicated by the operator. When the command is transmitted (step S11), the mode determination unit 61 in the control unit 60 shown in FIG. 8 determines which one of the compression mode and the normal mode is selected (step S12). When it is determined that the compression mode is selected (step S12), the movement control unit 63 in the control unit 60 sets the moving speed of the video system as the moving speed at the time of compression shooting (step S13). Move the video system. X-ray fluoroscopy is performed in this state.

  On the other hand, when the normal mode is selected (step S12), the position determination unit 62 in the control unit 60 sets the compression cylinder 21 to the storage position based on the signal of the sensor 30 shown in FIGS. It is determined whether or not there is (step S14). When it is determined that the compression cylinder 21 is in the storage position (step S14), the movement control unit 63 in the control unit 60 sets the moving speed of the video system to the normal moving speed (step S17), and the video Move the system. Then, X-ray fluoroscopy is executed, or the video system moves to a required position.

  When it is determined that the compression cylinder 21 is not disposed at the storage position when the normal mode is selected and the compression mode is not selected (step S14), the movement control unit 63 in the control unit 60 performs the video system. After switching the moving speed to a low speed (step S15), the video system is moved. Further, the compression cylinder 21 is moved toward the storage position under the control of the compression cylinder movement control unit 64. When the compression cylinder 21 moves to the storage position (step S16), the movement control unit 63 in the control unit 60 sets the moving speed of the video system to the normal moving speed (step S17) and moves the video system. . Thereafter, X-ray fluoroscopy is executed, or the video system is moved to a necessary position.

  As described above, in the X-ray inspection apparatus according to the first embodiment, when the compression cylinder 21 is not disposed at the storage position even though it is not in the compression mode, the compression cylinder 21 is stored. In the meantime, since the relative moving speed of the top board 13 and the image system is set to a low speed, the possibility of contact between the compression cylinder 21 and the subject is reduced, and even if contact is made, the subject is damaged. It is possible to prevent the burden.

  Next, another embodiment of the operation of controlling the moving speed of the video system by the X-ray inspection apparatus described above will be described. FIG. 10 is a flowchart showing a second embodiment of the moving operation of the video system in the X-ray inspection apparatus according to the present invention.

  Also in the second embodiment, the operator selects whether to perform X-ray fluoroscopy in the compression mode using the compression cylinder 21 or the normal mode not using the compression cylinder 21 prior to the operation. At this time, the operator operates the compression mode selection button 53 in the operation unit 50 shown in FIG.

  In this state, the video system movement for moving the video system composed of the X-ray tube 11 and the X-ray detection unit 12 relative to the top board 13 by operating the video system moving lever 52 in the operation unit 50 indicated by the operator. When the command is transmitted (step S21), the mode determination unit 61 in the control unit 60 shown in FIG. 8 determines which one of the compression mode and the normal mode is selected (step S22). When it is determined that the compression mode is selected (step S22), the movement control unit 63 in the control unit 60 sets the moving speed of the video system as the moving speed at the time of compression shooting (step S23). Move the video system. X-ray fluoroscopy is performed in this state.

  On the other hand, when the normal mode is selected (step S22), the position determination unit 62 in the control unit 60 sets the compression cylinder 21 to the storage position based on the signal of the sensor 30 shown in FIGS. It is determined whether or not there is (step S24). When it is determined that the compression cylinder 21 is in the storage position (step S24), the movement control unit 63 in the control unit 60 sets the moving speed of the video system to the normal moving speed (step S27), and then the video. Move the system. Then, X-ray fluoroscopy is executed, or the video system moves to a required position.

  Further, when it is determined that the normal mode is selected and the compression mode is not selected and the compression cylinder 21 is not disposed at the storage position (step S24), the movement control unit 63 in the control unit 60 moves the video system. Is prohibited (step S25). Further, the compression cylinder 21 is moved toward the storage position under the control of the compression cylinder movement control unit 64. When the compression cylinder 21 moves to the storage position (step S26), the movement control unit 63 in the control unit 60 moves the video system while setting the moving speed of the video system to the normal movement speed (step S27). . Thereafter, X-ray fluoroscopy is executed, or the video system is moved to a necessary position.

  As described above, in the X-ray inspection apparatus according to the second embodiment, when the compression cylinder 21 is not disposed at the storage position even though it is not in the compression mode, the compression cylinder 21 is stored. In the meantime, since the relative movement of the top board 13 and the video system is stopped, it is possible to prevent the compression cylinder 21 from colliding with the subject.

  In the second embodiment described above, the video system is moved after waiting for the compression cylinder 21 to move to the storage position. However, when the position determination unit 62 determines that the compression cylinder 21 is not in the storage position and the mode determination unit 61 determines that the compression mode is not selected, a configuration that always prohibits movement of the video system is adopted. May be.

  In the first and second embodiments described above, the video system composed of the X-ray tube 11 and the X-ray detection unit 12 is moved, but the subject is placed on the top board 13. When performing imaging, the video system constituted by the X-ray tube 11 and the X-ray detector 12 may be stopped and the top plate 13 may be moved.

DESCRIPTION OF SYMBOLS 11 X-ray tube 12 X-ray detection part 13 Top plate 14 Support | pillar 15 Slide arm 16 Rotation mechanism 17 Main support | pillar 18 Base plate 20 Rotation cylinder mechanism 21 Rotation cylinder 22 1st arm 23 2nd arm 24 3rd arm 25 Guide rail 26 Slide member 27 Bearing 28 Contact portion 29 Spring 30 Sensor 34 Motor 50 Operation portion 60 Control portion 61 Mode determination portion 62 Position determination portion 63 Movement control portion 71 Video system drive portion 75 Compression cylinder drive portion

Claims (4)

A top board that contacts the subject and defines the imaging position of the subject;
An image system comprising an X-ray tube and an X-ray detector for detecting X-rays irradiated from the X-ray tube and passing through the subject;
A moving mechanism for relatively moving the top plate and the video system;
A compression cylinder that moves with the video system and is movable between a pressing position that presses the diagnostic site of the subject and a storage position that is retracted from the pressing position;
In the X-ray inspection apparatus provided with
A position determination unit that determines whether or not the compression cylinder is in the storage position;
When the position determination unit determines that the compression cylinder is not in the storage position, the position determination unit determines the relative movement speed of the top plate and the video system by the movement mechanism, and the position determination unit determines that the compression cylinder is in the storage position. A movement control unit that is slower than the speed at which it is determined that
An X-ray inspection apparatus comprising: The X-ray inspection apparatus according to claim 1,
When the position determination unit determines that the compression cylinder is not in the storage position, the movement control unit determines whether the top of the movement mechanism is in the range until the position determination unit determines that the compression cylinder is in the storage position. An X-ray inspection apparatus that sets a relative moving speed of the plate and the video system to be lower than a speed when the position determination unit determines that the compression cylinder is in the storage position. The X-ray inspection apparatus according to claim 1,
The apparatus further comprises selection means for selecting either the compression mode using the compression cylinder or the normal mode not using the compression cylinder, and the movement control unit selects the normal mode, and the compression cylinder is in the storage position. X-ray which makes the relative moving speed of the top plate and the video system by the moving mechanism slower than the speed when the position determining unit determines that the compression cylinder is in the storage position. Inspection device. The X-ray inspection apparatus according to claim 1 or 2 ,
Video system movement instruction means for instructing relative movement between the top plate and the video system by the moving mechanism;
An operation unit for selecting a compression mode in which X-ray imaging is performed by pressing the diagnosis site of the subject with the compression cylinder;
A mode determination unit that determines whether or not the compression mode is selected by the operation unit;
When the position determination unit determines that the compression cylinder is not in the storage position and the mode determination unit determines that the compression mode is not selected, there is an instruction to move by the video system movement instruction unit. The X-ray inspection apparatus further comprises a compression cylinder movement control means for moving the compression cylinder toward the storage position.

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