JP2004357987A - X-ray diagnostic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an X-ray diagnostic equipment constituted so that the drive part of an X-ray detector is made small without reducing the forward and rearward moving range of the X-ray detector and the movable range of a holding device such as a C-shaped arm or the like is taken largely. <P>SOLUTION: This X-ray diagnostic equipment is equipped with the drive part 30 for moving a FPD (flat plane detector) 20 forward and rearward on the side of a subject with respect to a C-arm. The drive part 30 is equipped with a fixed side frame 31 supported inside the radial direction of the C-arm 10 by the C-arm 10 and a moving mechanism 32 for moving the FPD forward and rearward within a predetermined range inside the radial direction of the C-arm 10. The moving mechanism 32 is equipped with a drive motor 33, a pinion gear 35 connected to the rotary shaft thereof, a rack gear 36 meshed with the pinion gear 35, a pair of sprockets 38 and 38 arranged to both ends in the moving direction thereof and a chain 40 trained over both sprockets 38 and 38 and fixed to the fixed side frame 31 at both end parts thereof. The FPD 20 is fixed to the chain 40 and moved over a moving distance twice that of the rack gear 36. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an X-ray diagnostic apparatus using a holding device such as a C-arm type holding device for holding an X-ray source and an X-ray detection unit, and more particularly to an X-ray detector that moves forward and backward with respect to a C-arm type holding device. The present invention relates to a device for moving a driving mechanism.
[0002]
[Prior art]
2. Description of the Related Art In a clinical setting, an X-ray diagnostic apparatus using a C-arm type holding device that holds an X-ray source and an X-ray detector to face each other with a patient placed on a tabletop therebetween is known. One example of this X-ray diagnostic apparatus is shown in FIGS.
[0003]
An X-ray diagnostic apparatus 100 shown in FIG. 6 includes a top (bed) 101 on which a patient (subject) is placed, and an X-ray tube apparatus (X-ray source) 102 at one of the positions on the top 101 that sandwiches the subject. A C-arm (holding device) 107 for holding an image intensifier (II) 104, which is an X-ray detector as an image receiving system, a TV camera 105, and an optical system 106; A gantry 108 for movably holding the top plate 101 and the C-arm 107, and a console (not shown) for various operations related to X-ray imaging (fluoroscopy) with respect to these units 101 to 108 are provided.
[0004]
As shown in FIG. 7, the X-ray diagnostic apparatus 100 moves up and down (see the direction indicated by the arrow M1 in FIG. 7) and moves up and down (see FIG. 7) to take various clinically necessary positionings. M2), forward / backward movement (see M3), and left / right movement (see M4), the length of the C arm 107 with respect to the gantry 108 (see arrow M5 in the same manner), rotation (see M6 in the same manner), and circular movement (see M6) M7) and I.C. I. Each operation with the forward and backward movement of 104 (see M8) is possible.
[0005]
Of these, I. I. A driving unit (mechanism unit) for moving the 104 back and forth (advancing and retracting) with respect to the C-arm 107 toward and from the patient side on the top plate 101 is, for example, a loop formed by turning a chain between a pair of pulleys (a driving pulley and a driven pulley). I. attached to the chain by a mechanism. I. 104 mounted on the rack by a mechanism using a rack and a pinion, I. A device that drives the device 104 is known.
[0006]
Recently, as an X-ray detector, I.P. I. An example in which an FPD (Flat Panel Detector: flat panel detector) configured by arranging solid-state imaging devices in a two-dimensional manner instead of the FPD 104 is also known. I. A drive similar to 104 is used. An example of an X-ray diagnostic apparatus employing an FPD as an X-ray detector is disclosed in, for example, Patent Document 1. According to Patent Document 1, when FPD is used, I.P. I. Compared with the case of 104, there is no portion protruding outside through the opening of the C-arm, so that the protruding portion does not interfere with the floor or the like, and the effect of freely positioning the C-arm can be obtained. Is described.
[0007]
[Patent Document 1]
JP-A-10-328173
[Problems to be solved by the invention]
However, in the above-described conventional X-ray diagnostic apparatus, the driving unit that moves the X-ray detection unit back and forth is equal to or larger than the moving range of the X-ray detection unit. There is a problem that it becomes difficult to secure a sufficient clearance with a ceiling or the like, and it becomes impossible to obtain a necessary positioning clinically. This is because I. I. The same is true not only when the FPD is used but also when the FPD as described in Patent Document 1 is used. When the FPD is used, the FPD itself does not protrude outside the C-arm, but the mechanism of the driving unit is basically I.D. I. Is used, the above problem is not solved before.
[0009]
The present invention has been made in view of such conventional circumstances, and can reduce the driving unit of the X-ray detector without reducing the moving range of the X-ray detector in the forward and backward movements, and can hold the C-arm and the like. An object is to increase the movable range of the device.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, an X-ray diagnostic apparatus according to the present invention includes an arc-shaped arm that holds an X-ray source and an X-ray detector at positions facing each other across a subject placed on a top plate, A driving means for moving the X-ray detector back and forth toward the subject with respect to the arc-shaped arm, wherein the driving means is supported by the arc-shaped arm on a radially inner side thereof. And a moving mechanism for moving the X-ray detector back and forth within a predetermined range radially inward of the arc-shaped arm with respect to the support.
[0011]
The moving mechanism is, for example, a drive motor disposed on the support body side, a pinion gear connected to a rotation shaft of the drive motor and driven at a predetermined rotation ratio, meshing with the pinion gear and according to the rotation thereof. A rack gear that moves a predetermined distance, a pair of sprockets disposed at both ends in the movement direction of the rack gear, and a chain wound between the pair of sprockets and having both ends fixed to the support. The line detector is fixed to the chain and moves by a moving distance twice as long as the moving distance of the rack gear.
[0012]
The moving mechanism is, for example, a drive motor disposed on the support body side, a pinion gear connected to a rotation shaft of the drive motor and driven at a predetermined rotation ratio, meshing with the pinion gear and according to the rotation thereof. A rack gear that moves a predetermined distance, a pair of pulleys disposed at both ends in the movement direction of the rack gear, and a belt wound between the pair of pulleys and having both ends fixed to the support; The line detector is fixed to the belt and moves by a moving distance twice as long as the moving distance of the rack gear.
[0013]
The moving mechanism is, for example, a drive motor disposed on the support body side, a pinion gear connected to a rotation shaft of the drive motor and driven at a predetermined rotation ratio, meshing with the pinion gear and according to the rotation thereof. A rack gear that moves a predetermined distance, a pair of pulleys disposed at both ends in the movement direction of the rack gear, and a wire wound between the pair of pulleys and having both ends fixed to the support; The line detector is fixed to the wire and moves at a moving distance twice as long as the moving distance of the rack gear.
[0014]
The moving mechanism is, for example, a drive motor, a ball screw driven by the drive motor and arranged perpendicular to the forward and backward movement direction of the X-ray detector, and the X-ray detector is driven by the ball screw. A link mechanism that moves in the forward and backward movement directions, and the X-ray detector is fixed to the link mechanism.
[0015]
The moving mechanism is, for example, a drive motor, a lead screw driven by the drive motor and arranged orthogonal to the forward and backward movement direction of the X-ray detector, and the X-ray detector is driven by driving the lead screw. A link mechanism that moves in the forward and backward movement directions, wherein the X-ray detector is fixed to the link mechanism.
[0016]
The arc-shaped arm is, for example, a C-shaped arm. In addition, a Q-shaped arm or the like may be used.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of an X-ray diagnostic apparatus according to the present invention will be described with reference to FIGS.
[0018]
(1st Embodiment)
The X-ray diagnostic apparatus according to the first embodiment includes an X-ray tube apparatus (X-ray source) and an X-ray tube at one of positions on the top plate (bed) on which a patient (subject) is to be placed. A C-arm (holding device) as an arc-shaped arm for holding a line diaphragm and an FPD (flat detector) as an X-ray detecting unit on the other side, and a gantry for holding the top plate and the C-arm movably. And a console for various operations for X-ray imaging by these units. Among them, the components other than the FPD and the drive unit (mechanism unit) for the forward and backward movement thereof can apply, for example, the configuration of the conventional example described above.
[0019]
FIGS. 1A and 1B show the main configuration of the X-ray diagnostic apparatus according to the first embodiment, that is, the FPD 20 held by the C-arm 10 is moved back and forth (advancing and retracting) toward the patient on the top board. FIG. 1A is a front view of an FPD 20 and a C-arm 1 to which the drive unit 30 is attached, and FIG. 1B is a plan view of the drive unit (drive unit) 30.
[0020]
1A and 1B, the X-ray diagnostic apparatus according to the first embodiment has a drive unit 30 for moving the FPD 20 back and forth, and the drive unit 30 is radially inwardly moved by the C-arm 10. And a moving mechanism 32 for moving the FPD 20 back and forth within a predetermined range radially inward of the C-arm 10 with respect to the fixed side frame 31.
[0021]
The moving mechanism 32 includes a drive motor 33 as a drive source disposed on the fixed frame 4 side, a speed reducer 34 connected to a rotation shaft of the drive motor 33, and a pinion gear 35 connected to the speed reducer 34. A rack gear 36 meshing with the pinion gear 35 and moving a predetermined distance in accordance with the rotation thereof; a movable frame 38 fixed to the rack gear 36 and moving with respect to the fixed frame 31 via a guide 37; A pair of sprockets 39, 39 fixed to both ends in the vertical direction of the side frame 37, and a chain 40 wound between the pair of sprockets 39, 39 are provided. Both ends of the chain 40 are fixed to the fixed-side frame 31 via the mounting portions 41. The FPD 20 is movably attached to the movable frame 38 via a guide 42, and is fixed via an attachment portion 43 provided at a predetermined position of the chain 40.
[0022]
According to this configuration, the driving force of the drive motor 33 is reduced by the speed reducer 34 and transmitted to the pinion gear 35, whereby the pinion gear 35 rotates at a predetermined rotation ratio. Due to the operation of the pinion gear 35, the rack gear 36 meshing with the pinion gear 35 moves in the longitudinal direction with respect to the fixed frame 31 together with the movable frame 38, and a pair of sprockets 39, The chain 40 moves via 39, whereby the FPD 20 fixed to the chain 40 moves in the front-back movement direction. The moving distance of the FPD 20 at this time is exactly twice the moving distance of the rack gear 36.
[0023]
Here, features of the moving mechanism 31 of the first embodiment will be described with reference to FIGS. 2 and 3 in comparison with the case of the conventional example.
[0024]
FIG. 2 illustrates the case of the conventional example. 2 includes a drive motor 201, a speed reducer 202 connected to a rotating shaft of the drive motor 201, and a pair of pulleys connected to the speed reducer 202, that is, a driving pulley 203 and a driven pulley. 204, and a chain 205 wound between the pulleys 203, 204. The FPD 20 is fixed to the chain 205. In this configuration, the moving distance C of the FPD 20 is substantially equal to the distance between the central axes of the pair of pulleys 203 and 204. Therefore, in order to secure the moving distance C of the FPD 20, it is necessary to secure the distance between the pulleys 203 and 304 by the same amount, and as a result, there is a disadvantage that the entire driving unit becomes large. This is the same even when a mechanism using a rack and a pinion is used instead of the pulley and the chain.
[0025]
On the other hand, FIGS. 3A and 3B illustrate the case of the first embodiment. As illustrated, the drive unit 30 of the first embodiment (in the example in the figure, only the pinion gear 35, the rack gear 36 (and the movable frame 38), the two sprockets 39, 39, and the chain 40 are shown). In, the moving distance A of the FPD 20 is twice the moving distance B of the rack gear 36 (A = B × 2).
[0026]
Therefore, according to the first embodiment, since the mechanism for moving the FPD by twice the distance moved by the pinion gear is employed, the driving unit of the FPD can be made compact without reducing the moving range of the forward and backward movement of the FPD. As a result, the movable range of the C-arm can be increased.
[0027]
In the first embodiment, a mechanism in which a sprocket and a chain are combined is exemplified as a moving mechanism of the FPD. However, as another mechanism, for example, a combination of a pulley and a belt, or a combination of a pulley and a wire, is similar to the above. The effect of can be obtained.
[0028]
(2nd Embodiment)
FIG. 4 shows a main configuration of an X-ray diagnostic apparatus according to the second embodiment. In the second embodiment, a link mechanism is used as a drive unit of the FPD. Other configurations are substantially the same as those of the first embodiment, and therefore, are denoted by the same reference numerals and description thereof is omitted.
[0029]
The driving unit 30a of the FPD 20 shown in FIG. 4 includes a frame (support) 51 supported on the radial inside by the C-arm 10, a link mechanism 52 for moving the FPD 20 back and forth with respect to the frame 51, and a link mechanism 52 And a guide mechanism 54 for guiding the link mechanism 52 to move forward and backward.
[0030]
The drive mechanism 53 includes a drive motor 55 as a drive source, a speed reducer 56 connected to a rotation shaft of the drive motor 55, and a ball screw (ball screw) 57 connected to the speed reducer 56. Of these, the ball screw 57 is disposed inside the frame 51 in a direction in which its rotation axis is orthogonal to the longitudinal movement direction of the FPD 20, and a right screw 58 is combined with one of both sides sandwiching the center position, and a left screw 59 is combined with the other. By rotating the two screws 58 and 59, the nut 58a of the right screw 58 and the nut 59a of the left screw 59 can move in opposite directions with respect to the center position.
[0031]
The link mechanism 52 is connected to the nut 58a of the right screw 58 and the nut 59a of the left screw 59 on both sides of the rotation axis of the ball screw 57 in the forward and backward movement directions of the FPD 20 by inserting pins 60. Two inner links 61, 61 and two outer links 62, 62 which are swingably connected to the center, and are swingably connected to the two inner links 61, 61 via insertion pins 63, 63. And a rear end link 66 that is swingably connected to the two outer links 62, 62 via insertion pins 65, 65. The FPD 20 is fixed to the distal link 64. The rear end side link 66 is fixed to the frame 51.
[0032]
The guide mechanism 54 includes a guide shaft 67 disposed along the front-rear movement direction of the FPD 20, a guide bracket 68 fixed to the fixed frame 51 and holding the guide shaft 67 movably, and fixed to a distal end of the guide shaft 68. And a guide body 70 in which a guide groove 69 is formed orthogonal to the front-back movement direction of the FPD 20. In the guide groove 69 of the guide body 70, guide pins 71 provided on the two inner links 61 are movably inserted and arranged.
[0033]
According to this configuration, the driving force of the drive motor 55 is reduced by the speed reducer 56 and transmitted to the ball screw 57, whereby the ball screw 57 rotates at a predetermined rotation ratio. Due to the operation of the ball screw 57, the nut 58a of the right screw 58 and the nut 59a of the left screw 59 move in opposite directions (toward or away from the center position) across the center position. By the movement of the two nuts 58a, 59a, two outer links 62, 62 connected to the rear end link 66 fixed to the frame 51, and two inner links 61 connected to the front end link 64, 61 expands and contracts. At this time, the guide shaft 68 moves in the front-rear direction along the guide bracket 68 fixed to the frame 51, and the guide pins 71, 71 attached to the two inner links 61, 61 are inserted into the guide grooves of the guide body 70. 69, whereby the FPD 20 moves in the front-back movement direction together with the distal link 64.
[0034]
Therefore, according to the second embodiment, similarly to the first embodiment, the driving unit of the FPD can be compactly constructed without reducing the moving range of the FPD fore-and-aft movement, and thereby the movable range of the C-arm. Can be increased.
[0035]
In the second embodiment, a ball screw is used as a mechanism for driving the link mechanism, but a lead screw (feed screw) may be used instead.
[0036]
(Third embodiment)
FIG. 5 shows a main configuration of an X-ray diagnostic apparatus according to the third embodiment. The third embodiment uses a link mechanism having a configuration different from that of the second embodiment. Other configurations are substantially the same as those of the first and second embodiments, and therefore, are denoted by the same reference numerals and description thereof is omitted.
[0037]
The driving unit 30b of the FPD 20 shown in FIG. 5 includes a support 81 that is supported radially inward by the C-arm 10, a link mechanism 82 that moves the FPD 20 back and forth with respect to the support 81, and drives the link mechanism 82. And a guide mechanism 84 for guiding the link mechanism 82 to move forward and backward.
[0038]
The drive mechanism 83 includes a drive motor 85 as a drive source, a speed reducer 86 connected to a rotation shaft of the drive motor 85, a ball screw (ball screw) 87 connected to the speed reducer 86, and the ball screw 87. And a guide 88 for guiding the movement of the object. The guide 88 is fixed to the support 81. The ball screw 87 has a rotation axis disposed in a direction perpendicular to the front-rear movement direction of the FPD 20 inside the support body 81, and a right screw 89 on one of both sides sandwiching the center position and a left screw 90 on the other. By rotating the two screws 89 and 90, the nut 89a of the right screw 89 and the nut 90a of the left screw 90 can move in opposite directions along the guide body 88 across the center position.
[0039]
The link mechanism 91 is connected to the nut 89a of the right screw 89 and the nut 90a of the left screw 90 on both sides of the rotation axis of the ball screw 87 in the front-back movement direction of the FPD 20 via insertion pins 92, 92 respectively. It is composed of two links 94, 94 which are swingably connected to the center and which are connected to each other via an insertion pin 93 at the center thereof so as to cross each other.
[0040]
The guide mechanism 84 includes a guide shaft 95 disposed along the front-back movement direction of the FPD 20, a guide bracket 96 for movably holding the guide shaft 95, a front-rear movement direction of the FPD 20 fixed to the tip of the guide shaft 95. And a guide body 98 in which a guide groove 97 is formed orthogonally to. In the guide groove 97 of the guide body 98, guide pins 99, 99 provided on the two links 94, 94 are movably inserted and arranged. The FPD 20 is fixed to the guide body 98.
[0041]
According to this configuration, the driving force of the drive motor 85 is reduced by the speed reducer 86 and transmitted to the ball screw 87, whereby the ball screw 87 rotates at a predetermined rotation ratio. Due to the operation of the ball screw 87, the nut 89a of the right screw 89 and the nut 90a of the left screw 90 are opposite to each other across the center position along the guide 88 (toward or away from the center position). Moving. The movement of the nuts 89a, 90a causes the two links 94, 94 to rotate in opposite directions about the insertion pin 93. At this time, the guide shaft 95 moves in the forward and backward movement directions along the guide bracket 96, and the guide pins 99, 99 attached to the two links 94, 94 move along the guide grooves 97 of the guide body 98, As a result, the FPD 20 provided on the guide body 98 moves in the front-back movement direction.
[0042]
Therefore, according to the third embodiment, similarly to the first embodiment, the driving unit of the FPD can be compactly constructed without reducing the moving range of the forward and backward movement of the FPD, and thereby, the movable range of the C-arm. Can be increased.
[0043]
In the third embodiment, a ball screw is used as a mechanism for driving the link mechanism. However, a lead screw (feed screw) may be used instead.
[0044]
It should be noted that the present invention is not limited to the exemplary embodiments described above as representatives, and those skilled in the art may use various modifications within the scope of the claims based on the description in the claims. The embodiment can be modified and changed. These changes and modifications also fall within the scope of the present invention.
[0045]
【The invention's effect】
As described above, according to the present invention, the driving unit of the X-ray detector can be configured to be small without reducing the moving range of the X-ray detector in the forward and backward movements. The restriction on the operation of the arm holding device can be eased, and the movable range of the device can be increased.
[Brief description of the drawings]
FIGS. 1A and 1B are diagrams showing a main configuration of an X-ray diagnostic apparatus according to a first embodiment of the present invention, wherein FIG. 1A is a front view, and FIG. 1B is a view taken along line AA in FIG. FIG. 4 is a plan view of a driving unit of the FPD.
FIG. 2 is a conceptual diagram illustrating an operation of a driving mechanism of a conventional FPD.
FIGS. 3A and 3B are conceptual diagrams illustrating an operation principle of a driving mechanism of the FPD according to the first embodiment.
FIGS. 4A and 4B are diagrams showing a main configuration of an X-ray diagnostic apparatus according to a second embodiment of the present invention, wherein FIG. 4A is a front view, and FIG. 4B is a view along line BB in FIG. FIG. 4 is a side view of the driving unit of the FPD.
FIG. 5 is a front view showing a main configuration of an X-ray diagnostic apparatus according to a third embodiment.
FIG. 6 is a perspective view showing a conventional X-ray diagnostic apparatus.
FIG. 7 is a perspective view showing the operation of a conventional X-ray diagnostic apparatus.
[Explanation of symbols]
10 C arm (holding device)
20 FPD (flat detector)
30, 30b, 30a Driving unit 31 Fixed frame 32 Moving mechanism 33 Drive motor 34 Reduction gear 35 Pinion gear 36 Rack gear 37 Guide 38 Movable frame 39, 39 Sprocket 40 Chain 41 Mounting unit 42 Guide 43 Mounting unit 51 Supporting body 52 Link Mechanism 53 Drive mechanism 54 Guide mechanism 55 Drive motor 56 Reducer 57 Ball screw 58 Right screw 58a Right screw nut 59 Left screw 59a Left screw nut 60 ... 60 Insertion pins 61,61 Inner links 62,62 Outer links 63,63 Insertion pin 64 Front end side link 65, 65 Insertion pin 66 Rear end side link 67 Guide shaft 68 Guide bracket 69 Guide groove 70 Guide body 71, 71 Guide pin 81 Support body 82 Link mechanism 83 Drive mechanism 84 Guide mechanism 85 Drive motor 8 Reduction gear 87 Ball screw 88 Guide 89 Right screw 89a Right screw nut 90 Left screw 90a Left screw nut 91 Link mechanism 92, 92 Insert pin 93 Insert pin 94, 94 Link 95 Guide shaft 96 Guide bracket 97 Guide groove 98 Guide body 99, 99 Guide pin 100 X-ray diagnostic apparatus 101 Top plate 102 X-ray tube apparatus 103 X-ray aperture 104 I. (Image intensifier)
105 TV camera 106 Optical system 108 Mount

Claims (7)

An arc-shaped arm for holding an X-ray source and an X-ray detector at positions opposing each other with a subject placed on a top plate, and moving the X-ray detector forward and backward with respect to the arc-shaped arm; X-ray diagnostic apparatus comprising:
The driving means includes: a support supported by the arc-shaped arm on a radially inner side thereof; and a movement for moving the X-ray detector back and forth within a predetermined range on the radially inner side of the arc-shaped arm with respect to the support. An X-ray diagnostic apparatus comprising a mechanism. The moving mechanism includes a drive motor disposed on the support body side, a pinion gear connected to a rotation shaft of the drive motor and driven at a predetermined rotation ratio, and meshing with the pinion gear and a predetermined distance according to the rotation thereof. A moving rack gear, a pair of sprockets disposed at both ends of the rack gear in the moving direction, and a chain wound between the pair of sprockets and having both ends fixed to the support;
2. The X-ray diagnostic apparatus according to claim 1, wherein the X-ray detector is fixed to the chain and moves at a moving distance twice as long as the moving distance of the rack gear. 3. The moving mechanism includes a drive motor disposed on the support body side, a pinion gear connected to a rotation shaft of the drive motor and driven at a predetermined rotation ratio, and meshing with the pinion gear and a predetermined distance according to the rotation thereof. A moving rack gear, a pair of pulleys disposed at both ends of the rack gear in the moving direction, and a belt wound between the pair of pulleys and both ends fixed to the support,
2. The X-ray diagnostic apparatus according to claim 1, wherein the X-ray detector is fixed to the belt and moves at a moving distance twice as long as a moving distance of the rack gear. 3. The moving mechanism includes a drive motor disposed on the support body side, a pinion gear connected to a rotation shaft of the drive motor and driven at a predetermined rotation ratio, and a predetermined distance engaged with the pinion gear and determined by the rotation thereof. A moving rack gear, a pair of pulleys disposed at both ends in the moving direction of the rack gear, and a wire wound between the pair of pulleys and having both ends fixed to the support;
2. The X-ray diagnostic apparatus according to claim 1, wherein the X-ray detector is fixed to the wire and moves at a moving distance twice as long as the moving distance of the rack gear. 3. The moving mechanism includes a drive motor, a ball screw driven by the drive motor, and arranged perpendicular to the forward and backward movement direction of the X-ray detector. A link mechanism that moves in the direction
The X-ray diagnostic apparatus according to claim 1, wherein the X-ray detector is fixed to the link mechanism. The moving mechanism includes a drive motor, a lead screw driven by the drive motor and arranged orthogonally to a forward and backward movement direction of the X-ray detector, and a forward and backward movement of the X-ray detector by driving the lead screw. A link mechanism that moves in the direction
The X-ray diagnostic apparatus according to claim 1, wherein the X-ray detector is fixed to the link mechanism. The X-ray diagnostic apparatus according to any one of claims 1 to 6, wherein the arc-shaped arm is a C-shaped arm.

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