JP6613884B2 - Radioscopy equipment - Google Patents

Description

  The present invention relates to a radiographic imaging apparatus that includes a C-shaped arm that supports a radiation irradiating unit and a radiation detector in a state of facing each other and performs radioscopy or radiography on a subject.

  For example, an X-ray fluoroscopic apparatus used when performing examinations and operations on the circulatory system and the like includes an examination table on which a subject is placed, an X-ray irradiation unit including an X-ray tube, and X-ray irradiation. X-ray detector for detecting X-rays irradiated from the section and passing through the subject on the examination table, and substantially C-shaped having an arcuate guide portion and supporting the X-ray tube and the X-ray detector A C-type arm, a slide mechanism that slidably supports the C-type arm by engaging with an arcuate guide part, and a C-type arm that can be rotated about a horizontal axis through the slide mechanism. And a rotation mechanism that supports the first and second rotation mechanisms.

  In such an X-ray fluoroscopic apparatus, the oblique direction in which the C-arm is moved around the body axis around the body axis of the subject is moved to the left as viewed from the head side of the subject. The direction is represented as “LAO” (left forward tilt), and the moving direction to the right is represented as “RAO” (right forward tilt). For the sagittal direction in which the C-arm is moved in the body axis direction along the body axis of the subject, the direction of movement toward the head of the subject is represented as “CRAN” (CRANIAL), The direction of movement to the side is represented as “CAUUD” (Caudal).

  In such an X-ray fluoroscopic apparatus, when the C-arm is slid in the sagittal direction, if the slide amount of the C-arm is large, the examination table or the subject placed on the examination table Since the person or other equipment arranged in the examination room interferes with the X-ray irradiation unit or the X-ray detector supported by the C-type arm, the sliding amount of the C-type arm is limited. Further, when the C-arm is slid in the sagittal direction or the oblique direction, the sliding amount of the C-arm is limited to a preset range.

  Patent Document 1 discloses a shape data registration unit for registering three-dimensional model outer shape data corresponding to a three-dimensional outer shape of an X-ray imaging mechanism and three-dimensional model outer shape data corresponding to an outer shape of a top plate, and an X-ray imaging mechanism. A positional relationship obtaining means for obtaining, in real time, relative positional relationship information between the X-ray imaging mechanism and the top plate based on the current position and the three-dimensional model outer shape data and the position of the top plate and the three-dimensional model outer shape data; An X-ray imaging apparatus including an imaging system movement control unit that controls an X-ray imaging system movement mechanism in consideration of relative positional relationship information between an X-ray imaging mechanism and a top board obtained by a positional relationship obtaining unit is disclosed. Has been.

  According to such an X-ray imaging apparatus, the X-ray imaging mechanism and the top plate are brought into contact with each other by the movement of the X-ray imaging mechanism by the X-ray imaging system moving mechanism. Therefore, it is possible to reliably prevent the X-ray imaging mechanism from coming into contact with the top board.

JP 2004-275745 A

  When performing the slide operation on the C-type arm, the operator slides the C-type arm by operating the lever, and rotates the 3D image representing the C-type arm so that the 3D image is linked to the 3D image. There are cases where the C-arm is slid to the corresponding position. In the former case, when the sliding amount of the C-arm exceeds the limited range, the C-arm stops at that position regardless of the lever operation of the operator. In the latter case, when the slide amount in the 3D image exceeds the range in which the slide amount of the C-arm is limited, the C-arm slide is not executed.

  However, even in such a case, by oscillating the top plate of the examination table on which the subject is placed, the X-ray fluoroscopy can be performed in a wider angle range beyond the limit range of the slide amount of the C-arm. In some cases, X-ray imaging can be performed. This is when the X-ray irradiation unit and the X-ray detector are moved by rotating the C-arm instead of moving the X-ray irradiation unit and the X-ray detector by sliding the C-type arm. Is a similar phenomenon.

  The present invention has been made in order to solve the above-described problems. By combining the slide or rotation of the C-arm and the swing of the top plate, radioscopy or radiography can be performed in a wider range. An object of the present invention is to provide a radioscopy apparatus.

The invention according to claim 1 is an examination table provided with a top plate for placing a subject, a top plate swinging mechanism for tilting or rolling the top plate, a radiation irradiation unit, and the radiation irradiation. A radiation detector that detects radiation that has been irradiated from a section and transmitted through the subject on the top plate, a C-type arm that supports the radiation irradiation section and the radiation detector in a state of being opposed to each other, and the C-type An operation for accepting an operation for instructing sliding or rotation of the C-type arm in a radiographic imaging apparatus including a C-type arm moving mechanism that slidably and rotatably supports an arm. includes a section, when the object angle should be performed radiographic or radiography, outside the range of the photographing angle by the sliding or rotation of the C-arm, slide the C-arm with respect to the operating unit When the operation for de or rotation is made, after said the C-arm slide or rotate to near the limit of its sliding amount or rotation amount, by the top plate rocking mechanism tilting or roll the top plate The photographing angle is made to coincide with the target angle.

  The invention according to claim 2 is the invention according to claim 1, wherein the examination table moves the top plate in the longitudinal direction of the top plate, the lateral direction of the top plate, and the vertical direction. A moving mechanism, and when the top plate is tilted or rolled by the top plate swinging mechanism, the radiation from the radiation irradiator to the radiation detector is transmitted to the subject when the top plate is tilted or rolled. The top plate is placed in any one of the longitudinal direction, the short side direction, and the up-down direction so that it passes through the same position or the distance between the subject and the radiation irradiation unit or the radiation detector is constant. Move it.

  According to a third aspect of the present invention, in the second aspect of the invention, when the radiation irradiation unit and the radiation detector are slid in the sagittal direction with respect to the subject, the top plate swing mechanism is The top plate is tilted, and the top plate moving mechanism moves the top plate in the longitudinal direction and the vertical direction.

  According to a fourth aspect of the present invention, in the invention of the second aspect, when the radiation irradiation unit and the radiation detector are slid in the oblique direction with respect to the subject, the top plate swinging mechanism is While the top plate is rolled, the top plate moving mechanism moves the top plate in the lateral direction and the up-down direction.

According to the first aspect of the present invention, by combining the slide or rotation of the C-arm and the swing of the top plate, a wider angle can be obtained as compared with the case where the C-arm only performs the slide or rotation. It is possible to perform radioscopy or radiography in a range. In addition, the slide or rotation of the C-arm and the tilt or roll of the top plate can be continuously executed by the same operation as the normal slide or rotation operation.

  According to the second to fourth aspects of the present invention, even when the top plate is tilted or rolled, X-ray fluoroscopy or X-ray imaging can be performed on the same position in the subject. Become.

It is the perspective view which looked at the X-ray fluoroscope which concerns on this invention from the front side. It is the perspective view which looked at the X-ray fluoroscopic imaging apparatus which concerns on this invention from the side surface side. It is the perspective view which looked at the X-ray fluoroscope which concerns on this invention from diagonally backward. It is a perspective view which shows typically the top plate moving mechanism in the examination table. It is a block diagram which shows the main control systems of the X-ray fluoroscopic apparatus which concerns on this invention. 3 is an explanatory diagram schematically showing a sliding operation of a C-arm 28 and a swinging operation of a top plate 11. FIG. 3 is an explanatory diagram schematically showing a sliding operation of a C-arm 28 and a swinging operation of a top plate 11. FIG. 3 is an explanatory diagram schematically showing a sliding operation of a C-arm 28 and a swinging operation of a top plate 11. FIG. 3 is an explanatory diagram schematically showing a sliding operation of a C-arm 28 and a swinging operation of a top plate 11. FIG. 3 is an explanatory diagram schematically showing a sliding operation of a C-arm 28 and a swinging operation of a top plate 11. FIG. 3 is an explanatory diagram schematically showing a sliding operation of a C-arm 28 and a swinging operation of a top plate 11. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an X-ray fluoroscopic apparatus according to the present invention as seen from the front side. FIG. 2 is a perspective view of the X-ray fluoroscopic apparatus according to the present invention as viewed from the side. FIG. 3 is a perspective view of the X-ray fluoroscopic apparatus according to the present invention viewed obliquely from the rear. 1 and 2 show a state in which the C-type arm 28 is slid in the oblique direction, and FIG. 3 shows a state in which the C-type arm 28 is slid in the sagittal direction.

  The X-ray fluoroscopic apparatus according to the present invention includes an examination table 1 and an X-ray imaging unit 2.

  The X-ray imaging unit 2 includes an X-ray tube and a collimator, and an X-ray irradiation unit 31 as a radiation irradiation unit according to the present invention, and is irradiated from the X-ray irradiation unit 31 and passes through the subject on the examination table 1. And a flat panel detector 32 as a radiation detector according to the present invention for detecting X-rays. The X-ray imaging unit 2 includes a C-shaped arm 28 having a substantially C-shaped shape that has an arcuate guide unit and supports the X-ray irradiation unit 31 and the flat panel detector 32 in a state of facing each other. A slide part 27 that supports the C-type arm 28 so as to be slidable by engaging with a guide part in the C-type arm 28, a rotary part 29 that rotatably supports the slide part 27, and the rotary part 29. And a support portion 26.

  The support portion 26 is supported via a rotating member 25 that rotates about an axis that faces the first moving member 24 in the vertical direction. The first moving member 24 is movable in the Y direction shown in FIG. 1 along a pair of rails 23 disposed on the lower surface of the second moving member 22. The first moving member 24 is movable in the X direction shown in FIG. 1 along a pair of rails 21 disposed on the ceiling of the examination room.

  For this reason, the C-shaped arm 28 moves in the X direction and the Y direction together with the X-ray irradiation unit 31 and the flat panel detector 32, and rotates around the vertical axis direction, whereby the positions shown in FIGS. 3 and the position shown in FIG. 3, and rotates about the rotating portion 29 and slides relative to the sliding portion 27.

  FIG. 4 is a perspective view schematically showing a top board moving mechanism in the examination table 1. In this figure, the internal structure of the base 13 shown in FIGS. 1 to 3 is shown.

  As shown in FIGS. 1 to 4, the examination table 1 includes a top board 11 on which a subject is placed, a frame 12, and a base 13.

  The top plate 11 is supported so as to be movable with respect to the frame 12 in the longitudinal direction of the top plate 11 (the X direction shown in FIG. 4 when the top plate 11 is disposed in the horizontal direction). The frame 12 swings about the shaft 14 that faces the short direction of the top plate 11 (the Y direction shown in FIG. 4 when the top plate 11 is disposed in the horizontal direction) and faces the longitudinal direction. It swings around the shaft 15. As a result, the top plate 11 can execute, together with the frame 12, a roll that swings about the shaft 14 and a tilt that swings about the shaft 15.

  The shaft 14 and the shaft 15 are supported by the movable table 16. The moving table 16 is movable in the short direction of the top plate 11 with respect to the lifting table 17. Further, the lifting platform 17 can be moved up and down with respect to the support platform 18 in the vertical direction (Z direction shown in FIG. 4). Further, as described above, the top plate 11 is supported with respect to the frame 12 so as to be movable in the longitudinal direction of the top plate 11. For this reason, the top plate 11 can be moved up and down while being movable in the longitudinal direction and the short direction.

  FIG. 5 is a block diagram showing a main control system of the fluoroscopic imaging apparatus according to the present invention.

  This X-ray fluoroscopic apparatus includes a ROM that stores an operation program necessary for controlling the apparatus, a RAM that temporarily stores data during control, a CPU that executes logical operations, and the like, and controls the entire apparatus. A control unit 4 is provided. When the target angle at which X-ray fluoroscopy or X-ray imaging is to be performed is outside the range of the imaging angle by the slide of the C-arm 28, the control unit 4 is arranged to make the imaging angle coincide with the target angle. 11 includes a calculation unit 54 that calculates an angle at which 11 is to be tilted or rolled, and a storage unit 55 that stores position information such as dimensions and arrangement of the examination table 1 and the X-ray imaging unit 2.

  Here, the target angle and the photographing angle are based on the relative positions of the top plate 11 and the C-shaped arm 28. As will be described later, the imaging angle refers to an angle limited by the X-ray irradiation unit 31 and the flat panel detector 32 interfering with other members such as the top plate 11 and the movement of the C-shaped arm 28 itself. This is a concept including possible angles and angles that are movable when the X-ray irradiation unit 31 and the flat panel detector 32 are restricted by interference with other devices in the examination room.

  The control unit 4 is connected to an operation unit 3 for operating the examination table 1 and the X-ray imaging unit 2. The control unit 4 is connected to the examination table 1, and swings a mechanism 51 for tilting and rolling the table 11 on the examination table 1, and moves the table 11 in the longitudinal direction and the short direction. And the moving mechanism 52 for raising / lowering is controlled.

  Next, the sliding operation of the C-type arm 28 and the swinging operation of the top plate 11 when performing X-ray fluoroscopy or X-ray imaging with the X-ray fluoroscopic imaging apparatus having such a configuration will be described. FIGS. 6 to 8 are explanatory views schematically showing the sliding operation of the C-arm 28 and the swinging operation of the top plate 11. 6 to 8 show an embodiment in which the C-shaped arm 28 is made to approach the subject from the head side and slide in the sagittal direction.

  In an initial state before performing X-ray imaging or fluoroscopy, the C-arm 28 is disposed at the position shown in FIG. In this state, the C-arm 28 is indicated by an arrow A in FIG. 6 so that the angle θ formed by the X-ray axis extending from the X-ray irradiation unit 31 to the flat panel detector 32 and the surface of the top plate 11 becomes small. Assume a case of sliding in the sagittal direction. At this time, the operator starts the slide of the C-arm 28 by operating the lever 56 in the operation unit 3 shown in FIG. At this time, the control unit 4 transmits a command to the moving mechanism 53 in the X-ray imaging unit 2 to slide the C-arm 28.

  When the C-arm 28 continues to slide, the end of the C-arm 28 and the base 13 of the examination table 1 collide as shown in FIG. The control unit 4 recognizes this from the position information stored in the storage unit 55 and stops it near the limit of the slide amount before the C-arm 28 and the base 13 come into contact with each other. Then, the control unit 4 transmits a command to the swing mechanism 51 in the examination table 1 and tilts the top plate 11 of the examination table 1 in the direction indicated by the arrow B in FIG.

  The angle θ formed by the X-ray axis extending from the X-ray irradiator 31 to the flat panel detector 32 by the tilting operation of the top plate 11 and the surface of the top plate 11 is equal to the target angle at which X-ray fluoroscopy or X-ray imaging is to be performed. If the angle is equal to or equivalent to that, the operator stops the operation of the lever 56 in the operation unit 3. Thereby, the tilting operation of the top plate 11 is stopped. The angle corresponding to that means an angle substantially the same as the target angle. In the following description, this is simply expressed as “the target angle”.

  In this state, the angle θ formed by the X-ray axis extending from the X-ray irradiation unit 31 to the flat panel detector 32 and the surface of the top plate 11 coincides with the target angle at which X-ray fluoroscopy or X-ray imaging is to be performed. However, with the tilting operation of the top plate 11, the X-ray fluoroscopic position or the X-ray imaging position with respect to the subject shifts, and the subject approaches the flat panel detector 32 side. For this reason, the moving mechanism 52 of the examination table 1 allows the X-rays to pass through the same position in the subject and the distance between the subject and the flat panel detector 32 or the X-ray irradiation unit 31 to be constant. The top plate 11 is moved in the longitudinal direction as shown by an arrow C in FIG. 8 and lowered as shown by an arrow D.

  In the above-described embodiment, the angle θ formed between the X-ray axis extending from the X-ray irradiation unit 31 to the flat panel detector 32 and the surface of the top plate 11 by the operator operating the lever 56 in the operation unit 3 is set. The slide of the C-arm 28 is stopped at the time when it coincides with the target angle at which X-ray fluoroscopy or X-ray imaging should be performed. On the other hand, when the 3D image representing the C-arm 28 is rotated and the C-arm 28 is slid to a position corresponding to the 3D image by the 3D image interlocking operation, the calculation unit 54 in the control unit 4 performs C The slide amount of the mold arm 28 and the tilt amount of the top plate 11 are calculated.

  That is, when the C-arm 28 is slid by such a method, the operator inputs a target angle at which X-ray fluoroscopy or X-ray imaging is to be performed by the input unit 57 such as a keyboard in the operation unit 3. As a result, the calculation unit 54 in the control unit 4 matches the imaging angle and the target angle based on the positional information such as the dimensions and arrangement of each part of the examination table 1 and the X-ray imaging unit 2 stored in the storage unit 55. Therefore, the angle at which the top plate 11 should be tilted together with the slide of the C-arm 28 is calculated. Based on the calculation result, the swing mechanism 51 in the examination table 1 tilts the top plate 11, and the moving mechanism 53 in the X-ray imaging unit 2 slides the C-arm 28.

  In the embodiment shown in FIGS. 6 to 8, the C-type arm 28 is approached from the head side with respect to the subject, and the C-type arm 28 is slid, whereby the X-ray irradiation unit 31 and the flat panel detector are used. 32 in the sagittal direction with respect to the subject. On the other hand, the C-type arm 28 is approached from the side of the subject, and the C-type arm 28 is rotated by the action of the slide part 27 and the rotating part 29, whereby the X-ray irradiation part 31 and The flat panel detector 32 may be moved in the sagittal direction with respect to the subject. In this case, the top plate 11 is tilted and moved in the same manner as in the embodiment shown in FIGS.

  Next, another embodiment of the sliding operation of the C-arm 28 and the swinging operation of the top plate 11 when performing X-ray fluoroscopy or X-ray imaging with the above-described X-ray fluoroscopic apparatus will be described. 9 to 11 are explanatory views schematically showing other embodiments of the sliding operation of the C-arm 28 and the swinging operation of the top plate 11. 9 to 11 show an embodiment in which the C-arm 28 is slid in the oblique direction.

  In an initial state before performing X-ray imaging or fluoroscopy, the C-arm 28 is disposed at the position shown in FIG. From this state, it is desired to perform X-ray fluoroscopy or X-ray imaging by sliding the C-arm 28 in the direction of arrow E shown in FIG. 9 by an angle exceeding 90 degrees (for example, 100 degrees). Is assumed to be able to slide only up to 90 degrees for the sake of design. At this time, the operator starts the slide of the C-arm 28 by operating the lever 56 in the operation unit 3 shown in FIG. At this time, the control unit 4 transmits a command to the moving mechanism 53 in the X-ray imaging unit 2 to slide the C-arm 28.

  If the C-arm 28 is rotated 90 degrees as shown in FIG. 10, the control unit 4 transmits a signal to the moving mechanism 53 in the X-ray imaging unit 2 to stop the sliding of the C-arm 28. And the control part 4 transmits instruction | command to the rocking | fluctuation mechanism 51 in the examination table 1, and rolls the top plate 11 of the examination table 1 in the direction shown by arrow F in FIG.

  If the angle formed between the X-ray axis extending from the X-ray irradiating unit 31 to the flat panel detector 32 and the surface of the top plate 11 by the roll operation of the top plate 11 is the target angle at which X-ray fluoroscopy or X-ray imaging should be performed. The operator stops the operation of the lever 56 in the operation unit 3. Thereby, the roll operation | movement of the top plate 11 stops.

  In this state, the angle formed by the X-ray axis extending from the X-ray irradiation unit 31 to the flat panel detector 32 and the surface of the top plate 11 coincides with the target angle at which X-ray fluoroscopy or X-ray imaging is to be performed. However, with the roll operation of the top plate 11, the X-ray fluoroscopic position or the X-ray imaging position with respect to the subject is shifted, and the subject approaches the X-ray irradiation unit 31 side. For this reason, the moving mechanism 52 of the examination table 1 allows the X-rays to pass through the same position in the subject and the distance between the subject and the flat panel detector 32 or the X-ray irradiation unit 31 to be constant. The top plate 11 is moved in the short direction as indicated by the arrow G in FIG.

  When the C-arm 28 is slid in the oblique direction and the top plate 11 is rolled in this manner, the amount of movement of the subject is small, and thus the above-mentioned arrow G direction and arrow H of the top plate 11 are small. Movement in the direction may be omitted.

  In this embodiment as well, the angle between the X-ray axis from the X-ray irradiating unit 31 to the flat panel detector 32 and the surface of the top plate 11 is determined by the X-ray being operated by the operator operating the lever 56 in the operating unit 3. The slide of the C-arm 28 is stopped when it coincides with the target angle at which fluoroscopy or X-ray imaging is to be executed. On the other hand, when the 3D image representing the C-shaped arm 28 is rotated and the C-shaped arm 28 is slid to the position corresponding to the 3D image by the 3D image interlocking operation, similarly to the above-described embodiment. The calculation unit 54 in the control unit 4 calculates the slide amount of the C-arm 28 and the tilt amount of the top plate 11.

  That is, when the C-arm 28 is slid by such a method, the operator inputs a target angle at which X-ray fluoroscopy or X-ray imaging is to be performed by the input unit 57 such as a keyboard in the operation unit 3. As a result, the calculation unit in the control unit 4 matches the imaging angle with the target angle based on the positional information such as the dimensions and arrangement of each part of the examination table 1 and the X-ray imaging unit 2 stored in the storage unit 55. Therefore, the angle at which the top plate 11 should be rolled together with the slide of the C-shaped arm 28 is calculated. Based on the calculation result, the swing mechanism in the examination table 1 rolls the top plate 11 and the moving mechanism 53 in the X-ray imaging unit 2 slides the C-arm.

  In the embodiment shown in FIGS. 9 to 11, the C-type arm 28 is approached from the side of the subject and the C-type arm 28 is slid to slide the X-ray irradiation unit 31 and the flat panel detector 32. Are moved in the oblique direction with respect to the subject. On the other hand, the C-type arm 28 is made to approach the subject from the head side, and the C-type arm 28 is rotated by the action of the slide unit 27 and the rotating unit 29, whereby the X-ray irradiation unit 31 is rotated. And the flat panel detector 32 may be moved in the oblique direction with respect to the subject. In this case, the roll operation and the movement operation of the top plate 11 are the same as those in the embodiment shown in FIGS.

  In the above-described two embodiments, the C-type arm 28 is approached to the subject from either the head side or the side, but the C-type arm 28 is directed to the subject. You may make it approach from the diagonal direction. In such a case, the X-ray irradiation unit 31 and the flat panel detector 32 move in a direction in which the sagittal direction and the oblique direction are combined. The roll and tilt operations of the top plate 11 may be executed in combination.

DESCRIPTION OF SYMBOLS 1 Examination table 2 X-ray imaging part 3 Operation part 4 Control part 11 Top plate 12 Frame 13 Base 14 Axis 15 Axis 16 Moving stand 17 Lifting stand 18 Support stand 27 Slide part 28 C-type arm 29 Rotating part 31 X-ray irradiation part 32 Flat panel detector 51 Oscillating mechanism 52 Moving mechanism 53 Moving mechanism 54 Calculation section 55 Storage section 56 Lever 57 Input section

Claims (4)

An examination table provided with a top plate for placing the subject and a top plate swinging mechanism for tilting or rolling the top plate;
A radiation irradiating unit, a radiation detector that detects radiation irradiated from the radiation irradiating unit and transmitted through the subject on the top board, and the radiation irradiating unit and the radiation detector are supported in an opposing manner. A radiographic imaging apparatus comprising: a C-type arm; and a radiographic imaging unit including a C-type arm moving mechanism that slidably and rotatably supports the C-type arm.
An operation unit for receiving an operation for instructing the slide or rotation of the C-arm;
When the target angle at which radioscopy or radiography is to be performed is outside the range of imaging angles by sliding or rotating the C-shaped arm, an operation of sliding or rotating the C-shaped arm with respect to the operation unit is performed. When the C-arm is slid or rotated to near the limit of its slide amount or rotation amount, the top plate swinging mechanism tilts or rolls the top plate, so that the photographing angle becomes the target angle. A radiographic imaging device characterized by matching. The radiographic imaging apparatus according to claim 1,
The examination table further includes a top plate moving mechanism for moving the top plate in the longitudinal direction of the top plate, the short direction of the top plate, and the vertical direction,
The top plate moving mechanism, when the top plate is tilted or rolled by the top plate swing mechanism, the radiation from the radiation irradiation unit to the radiation detector passes through the same position in the subject, Or the radioscopy which moves the said top plate in the said longitudinal direction, the said transversal direction, or the said up-down direction so that the distance of the said subject and the said radiation irradiation part or the said radiation detector may become fixed. Shooting device. The radiographic imaging apparatus according to claim 2,
When moving the radiation irradiation unit and the radiation detector in the sagittal direction with respect to the subject,
A radiographic imaging apparatus in which the top plate swing mechanism tilts the top plate and the top plate moving mechanism moves the top plate in the longitudinal direction and the vertical direction. The radiographic imaging apparatus according to claim 2,
When moving the radiation irradiation unit and the radiation detector in an oblique direction with respect to the subject,
A radiographic imaging apparatus in which the top plate swinging mechanism rolls the top plate and the top plate moving mechanism moves the top plate in the lateral direction and the up-down direction.

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