JP5631222B2 - X-ray fluoroscopic equipment - Google Patents

Description

  The present invention fixes a subject to a bed in an X-ray fluoroscopic apparatus that performs X-ray imaging by tilting the bed so that the head of the subject on the bed is lower than the foot (hereinafter, reverse tilt). It relates to the position control of the shoulder rest.

  X-ray fluoroscopic apparatuses are used for various procedures in clinical settings. Among them, when the bed on which the subject rides reversely tilts like a stomach examination, the subject is held on the bed using shoulder pads. Further, in addition to manual adjustment of the position of the shoulder rest, one provided with a mechanism for automatically moving has been proposed (Patent Document 1).

Japanese Unexamined Patent Publication No. 1-148242

  However, in Patent Document 1, when the bed rotates from the reverse tilt position toward the standing position, the shoulder pad portion that holds the subject's shoulder is automatically set so as to be positioned above the subject's head. The position after the movement is always constant without depending on the height of the subject, and even when the next tallest subject is standing or lying down and positioning on the bed In order to prevent the shoulder rest from becoming an obstacle, it is necessary to move the shoulder rest to a sufficiently high position. Therefore, compared with a subject with a high height, a subject with a low height has a longer distance to move the shoulder pad when it is tilted in reverse, so that it takes time to hold the subject on the bed. Become.

  Accordingly, an object of the present invention is to provide an X-ray fluoroscopic apparatus capable of shortening the time required to hold a subject on a bed during reverse tilting.

  In order to solve the above-described problems, the present invention is configured as follows. An X-ray generator that irradiates the subject with X-rays, a bed on which the subject is placed, and a shoulder pad that moves on the bed and holds the subject on the bed when the bed is tilted reversely The X-ray fluoroscopic apparatus includes control means for positioning the position of the shoulder pad before the subject gets on the bed based on the height information of the subject.

  According to the present invention, it is possible to provide an X-ray fluoroscopic imaging apparatus capable of reducing the time required to hold the subject on the bed because the movement distance of the shoulder rest portion can be reduced during reverse tilting. .

1 is a diagram illustrating a configuration example of an X-ray fluoroscopic apparatus 1 according to the present invention. The figure for demonstrating the shoulder rest part 111. FIG. (a)-(c) The figure for demonstrating the motion of the shoulder pad part 111. FIG. (a)-(h) The figure for demonstrating Example 1. FIG. (a)-(e) The figure for demonstrating Example 2. FIG.

  Hereinafter, the X-ray fluoroscopic apparatus of the present invention will be described in detail with reference to the accompanying drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiments of the invention, and the repetitive description thereof is omitted.

FIG. 1 is a diagram showing a configuration example of an X-ray fluoroscopic apparatus according to the present invention.
The X-ray fluoroscopic imaging apparatus 1 of the present invention includes a bed 108 on which a subject is placed, an X-ray generation unit 101 that irradiates the subject with X-rays, and an X-ray diaphragm device 102 that sets an X-ray irradiation region for the subject. A support column 103 that supports the X-ray generation unit 101, a support column moving mechanism unit 104 that moves the support column 103 and allows the X-ray generation unit 101 to move in the short direction of the bed 108 (hereinafter, the Y direction), and a bed 108 and support column moving mechanism 104, support frame 105 that enables bed 108 and support column moving mechanism 104 to move in the longitudinal direction (hereinafter referred to as X direction) of bed 108, and connecting unit 106 that supports support frame 105 Then, the bed 106 and the X-ray generator 101 are moved in the Z direction by moving the connecting portion 106 in a direction perpendicular to the floor (hereinafter, Z direction), and the bed 108 and the X-ray generation The connecting portion moving mechanism 107 that allows the portion 101 to rotate in the rotation direction about the Y direction, and the connecting portion moving mechanism 107 installed on the floor surface. A X-ray detector 113 that detects X-rays that are transmitted through the subject, and a high-voltage generator 112 that supplies power to the X-ray generator 101. An X-ray image processing unit 114 that performs image processing on the X-ray signal output from the X-ray detector 113, a display device 115 that displays an X-ray image, and an X-ray image processing unit 114 An external storage unit 116 that stores an X-ray image, a control unit 117 that controls each of the above-described components, and an operation unit 118 that instructs the control unit 117 are provided.

  X-ray generation unit 101 has an X-ray tube that receives power supply from high voltage generation unit 112 and generates X-rays. In addition, the X-ray generation unit 101 may include an X-ray filter that selectively transmits X-rays having specific energy.

  The X-ray diaphragm device 102 has a plurality of movable restriction blades that shield X-rays generated from the X-ray generation unit 101, and moves by controlling each of the plurality of movable restriction blades (not shown in particular). Determine the X-ray irradiation area.

  The X-ray detector 113 is configured by, for example, a plurality of detection elements that detect X-rays arranged in a two-dimensional array, and is irradiated from the X-ray generation unit 101 and enters the subject. It is a device that detects X-ray signals according to the quantity.

  The X-ray image processing unit 114 performs image processing on the X-ray signal output from the X-ray detector 113 and outputs an image-processed X-ray image. Image processing includes gamma conversion, gradation conversion processing, image enlargement / reduction, and the like.

The external storage unit 116 stores the X-ray image output from the X-ray image processing unit 114.
The display device 115 displays the X-ray image output from the X-ray image processing unit 114 or the X-ray image stored in the external storage unit 116.

  The bed 108 is rotated about the Y direction by the connecting portion moving mechanism 107, so that the posture of the subject on the bed 108 can be set to a standing position, a lying position, and a reverse tilt position. The bed 108 includes a step 109 for placing a foot when the subject is standing on the end in the longitudinal direction (hereinafter referred to as the X direction), and a subject on the bed 108 on the end in the Y direction. A gripping rod 110 for holding the body position and a shoulder pad 111 for holding the subject on the bed 108 when the body is tilted in the reverse direction.

Here, details of the shoulder pad 111 will be described with reference to FIGS.
The shoulder pad 111 shown in FIG. 2 is supported by the shoulder pad support 200, and the shoulder pad support 200 engages with the slide rail 201, and the control unit 117 is moved on the slide rail 201 using the shoulder pad drive mechanism 202. Is controlled by movement. The shoulder contact drive mechanism 202 is configured by, for example, a motor, and the engagement between the shoulder support unit 200 and the slide rail 201 is configured by a rack and a pinion. In addition, a shoulder pad sensor 203 is provided at an engaging part between the shoulder pad support part 200 and the slide rail 201. The shoulder pad sensor 203 moves on the slide rail 201 when the shoulder pad part 111 moves. The pressure in the X direction applied to the shoulder rest 111 when the shoulder rest 111 comes into contact with the shoulder of the shoulder is detected.

  The detection value detected by the shoulder pad sensor 203 is transmitted to the control unit 117, and when the control unit 117 exceeds a preset detection value, the shoulder pad driving mechanism 202 stops the movement of the shoulder pad support unit 200. . Further, the shoulder support sensor 203 may be a switch that outputs only an ON / OFF signal. In this case, when the ON signal is transmitted to the control unit 117, the control unit 117 is configured to support the shoulder support by the shoulder support drive mechanism 202. Stop 200 moves. The shoulder pad position detection unit 204 detects the position of the shoulder pad part 111 on the bed 108.For example, the shoulder pad position detection unit 204 counts the number of rotations and the rotation direction of the motor or the like that constitutes the shoulder pad driving mechanism 202. The position of the unit 111 is detected. The detection result is transmitted to the control unit 117.

3 (a) to 3 (c) are views showing shoulder rests 111 arranged at different positions.
The position of the shoulder pad 111 shown in FIG. 3 (a) is a diagram when the shoulder pad 111 is arranged at the highest position, and the position of the shoulder pad 111 is defined as point A. The position of the shoulder pad 111 shown in FIG. 3 (b) is based on the height information of the subject 301 and is located at the head position of the subject 301. The position of the shoulder pad 111 is set as a B point. The position of the shoulder pad 111 shown in FIG. 3 (c) is in contact with the shoulder of the subject 301 and is located at a place where the subject 301 is held on the bed 108. The position of the shoulder pad 111 is set as a C point. The positioning of the shoulder pad 111 at each point will be described in detail in the embodiments described later.

Example 1 of the present invention will be described with reference to FIG.
FIGS. 4A to 4H are diagrams for explaining the flow of movement of the bed 108 and the shoulder pad 111 when the subject 301 is X-rayed at a reverse inclination. Further, FIG. 4 shows only the configuration necessary for convenience of explanation.

  FIG. 4A shows the positions of the first bed 108 and the shoulder pad 111 when the subject 301 is X-rayed at a reverse inclination. At this time, the bed 108 stands upright with respect to the floor surface, and the position of the shoulder pad 111 is point A. Here, the operator inputs the height information of the subject 301 using the operation unit 118. The input information is transmitted to the control unit 117, and the control unit 117 uses the shoulder support driving mechanism 202 and the shoulder support position detection unit 204 based on the input height information of the subject 301 to detect the shoulder. The part 111 is moved to the point B (FIG. 4 (b)).

When the movement of the shoulder pad 111 to the point B is completed, the subject 301 gets on the platform 109 (FIG. 4 (c)).
Next, the operator instructs the control unit 117 to rotate the bed 108 to a horizontal position with respect to the floor using the operation unit 118. In response to the instruction, the control unit 117 rotates the bed 108 counterclockwise using the connecting unit moving mechanism 107 until the bed 108 is in a horizontal position with respect to the floor surface (FIG. 4 (d)). Here, when the control unit 117 instructs the control unit 117 to continue the rotational movement and use the operation unit 118 so as to have the reverse inclination, the control unit 117 uses the shoulder support drive mechanism 202 to provide a shoulder support unit. Move 111 to point C (Fig. 4 (d)).

  The shoulder rest sensor 203 corresponds to the left and right shoulder rests 111, and when the shoulder rest sensor 203 detects that both the left and right shoulder rests 111 are in contact with the shoulder of the subject 301, the control section 117 The movement of the shoulder pad 111 is stopped, the rotational movement is resumed, and the bed 108 is inclined backward (FIG. 4 (e)). When the X-ray imaging is completed with the reverse inclination, the operator rotates the bed 108 clockwise using the operation unit 118. When the bed 108 is in a horizontal position with respect to the floor surface, the control unit 117 moves the shoulder pad 111 to the point B (FIG. 4 (f)).

  Further, the operator uses the operation unit 118 to rotate and move the bed 108 to a position standing upright with respect to the floor surface (FIG. 4 (g)).

  At this time, the shoulder pad 111 may be moved to the B point. Alternatively, it may be in the middle of rotating the bed 108 from FIG. 4 (f) to FIG. 4 (g). When the bed 108 comes to a position where it stands upright with respect to the floor surface, the subject 301 descends from the step board 109 (FIG. 4 (h)).

If you enter height information of the subject which the operator then performs X-ray imaging, shoulder rest portion 111 starts to move on the basis of the該身length information from the B point. Thereafter, the sequence of FIG. 4 (b) to FIG. 4 (h) is repeated.

  As described above, the fluoroscopic imaging apparatus according to the present embodiment performs the positioning of the shoulder pad 111 in advance based on the height information of the subject 301, so that the bed 108 is in the prone position (the bed 108 is horizontal with respect to the floor surface). When the inclination is reversed from the position at which the shoulder pad 111 is moved, the movement distance of the shoulder pad 111 can be reduced, and the time required to hold the subject 301 on the bed 108 can be shortened. In addition, the shoulder pad 111 is positioned to the highest point A during the transition from the reverse inclination to the standing position or the standing position (the position where the bed 108 stands perpendicular to the floor surface) or the standing position. Rather than returning to the position just before the reverse tilt, that is, returning to the point B determined in advance based on the height information, based on the height information of the subject to be X-rayed next after the X-ray imaging is completed. When positioning the shoulder pad 111, the distance of movement of the shoulder pad 111 only needs to be a height difference from the subject 301 that has just undergone X-ray imaging. When taking a picture, the movement time of the shoulder pad 111 can be shortened. Further, by returning the position of the shoulder pad 111 from the C point to the B point while the bed 108 is in the standing position, it is possible to reduce the time required only for the movement of the shoulder pad 111.

  Further, in this embodiment, when the shoulder rest sensor 203 detects that the shoulder rest 111 contacts the shoulder of the subject 301, the controller 117 stops the movement of the shoulder rest 111 and makes the bed 108 reversely tilted. However, the present invention is not limited to this. For example, when the movement of the shoulder pad 111 is stopped by the control unit 117, the fact may be displayed on the display device 115 to notify the operator. As a result, the operator can check whether the shoulder pad 111 is in the correct position. In addition, as shown in FIG. 1, a shoulder pad position adjustment input device 119 that can adjust the position of the shoulder pad sensor 203 is installed on the side surface in the X direction of the support frame 105, and is operated by the operator so that the shoulder pad is adjusted. Fine adjustment of the position of the lever 111 may be performed. The shoulder pad position adjustment input device 119 is composed of an UP switch and a DOWN switch that move the shoulder pad part 111 up and down. These switches are provided for each of the left and right shoulder pad parts 111, and the positions of the left and right shoulder pad parts 111 are adjusted. It can be controlled independently.

  Next, Example 2 of the present invention will be described with reference to FIG. Further, differences from the first embodiment will be described.

  This embodiment differs from the first embodiment in that height information of a plurality of subjects that perform continuous X-ray imaging is input in advance. FIG. 5 (a) shows the same state as FIG. 4 (e) described in the first embodiment. When the X-ray imaging is completed with the reverse inclination, the operator then uses the operation unit 118 to rotate the bed 108 clockwise. At this time, the control unit 117 is a place where the bed 108 is in a horizontal position with respect to the floor surface, and the control unit 117 sets the shoulder pad 111 to a B point (FIG. 5 (b)) or a D point (FIG. 5). Select one of the points in (c)) and start moving.

  The selection is performed by comparing the height information of the subject 301 currently on the bed 108 by the control unit 117 with the height information of the subject to be subjected to X-ray imaging next, and then performing the X-ray imaging. If the height of the subject is equal to or less than the height of the subject 301 currently on the bed 108, the height of the subject who moves the shoulder pad 111 to point B and then performs X-ray imaging is on the current bed 108 If the height of the subject 301 is higher than the height of the subject 301, the user moves to a point D based on the height information of the subject to be X-rayed next.

  The point D is located at the position of the head when the subject to be X-rayed next gets on the bed 108, and corresponds to the point B of the subject 301 currently on the bed 108. The movement from the point C to the point B or the point D is performed until the bed 108 comes to a position standing upright with respect to the floor surface (FIGS. 5D and 5E).

  Only when the height of the subject to be X-rayed next is lower than the height of the subject 301 currently on the bed 108, the control unit 117 displays the fact on the display device 115 to notify the operator. When the operator recognizes the display, after confirming that the subject 301 has stepped down the bed 108, the operator presses a readjustment switch (not shown) provided on the console 121. When the readjustment switch is pressed by the operator, the control unit 117 moves the shoulder pad 111 based on the height information of the subject to be X-rayed next that has already been input.

  As described above, the X-ray fluoroscopic imaging apparatus of the present embodiment inputs in advance the height information of a plurality of subjects that perform X-ray imaging continuously, so that the subject to be X-rayed next time. If the height is higher than the height of the subject 301 currently on the bed 108, the position of the shoulder pad 111 is already at the time when the subject 301 descends from the bed 108, and the height information of the subject to be X-rayed next time Since it is moving to the point D based on, it is possible to reduce the time required for shooting.

  1 X-ray fluoroscopic equipment, 101 X-ray generator, 102 X-ray diaphragm, 103 support, 104 support moving mechanism, 105 support frame, 106 connecting part, 107 connecting part moving mechanism, 108 bed, 109 stepper, 110 grip Bar, 111 Shoulder pad, 112 High voltage generator, 113 X-ray detector, 114 X-ray image processor, 115 Display unit, 116 External storage unit, 117 Control unit, 118 Operation unit, 119 Shoulder position adjustment input device , 200 Shoulder support, 201 Slide rail, 202 Shoulder drive mechanism, 203 Shoulder sensor, 204 Shoulder position detector, 301 Subject

Claims (4)

An X-ray generator that irradiates the subject with X-rays; a bed on which the subject is placed; and a shoulder pad that moves on the bed and holds the subject on the bed when the bed is inclined in reverse An X-ray fluoroscopic apparatus comprising:
The position of the shoulder rest portion, the previous SL object based on the height information of the subject have a control means for positioning before riding on the bed,
When the position of the bed moves from the position horizontal to the floor surface to the position of the reverse inclination, the control means moves the shoulder pad from the position positioned based on the height information of the subject. When the shoulder is moved to a position where the subject contacts the shoulder of the specimen and is held on the bed, and the position of the bed moves from the reversely inclined position to a horizontal position with respect to the floor surface, An X-ray fluoroscopic imaging apparatus that controls to move from a position where the subject is held on the bed to a position positioned based on height information of the subject . 2. The X-ray according to claim 1, wherein the control unit controls the movement of the shoulder pad so as to end at least before the position of the bed reaches a position perpendicular to the floor surface. Perspective imaging device. An X-ray generator that irradiates the subject with X-rays; a bed on which the subject is placed; and a shoulder pad that moves on the bed and holds the subject on the bed when the bed is inclined in reverse An X-ray fluoroscopic apparatus comprising:
Control means for positioning the position of the shoulder pad for each subject before the subject gets on the bed based on the height information of a plurality of subjects that continuously perform X-ray imaging;
When the position of the bed moves from the position horizontal to the floor surface to the position of the reverse inclination, the control means moves the shoulder pad from the position positioned based on the height information of the subject. Move to the position where the subject touches the shoulder of the specimen and holds the subject on the bed, and when the position of the bed moves from the position of reverse inclination to a position horizontal to the floor surface, The height information of the subject to be examined is compared with the height information of the subject to be X-rayed next, and the height of the subject to be X-rayed next is higher than the height of the subject on the bed In this case, the shoulder pad is controlled so as to move from a position where the subject is held on the bed to a position where the subject is positioned based on the height information of the subject to be X-rayed next. X-ray fluoroscopic equipment.   4. The X-ray according to claim 3, wherein the control unit controls the movement of the shoulder pad so as to end at least before the position of the bed reaches a position perpendicular to the floor surface. 5. Perspective imaging device.

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