JP2014064781A - X-ray radiographic apparatus - Google Patents

Abstract

When performing X-ray imaging by positioning a subject between an X-ray generation unit and an X-ray detection unit that are positioned opposite to each other in the horizontal direction, the X-ray generation unit and X Positioning in the X-ray irradiation region facing the line detection unit can be easily performed without taking time and effort.
An X-ray imaging apparatus includes an X-ray generator that generates X-rays, and an X-ray detector that faces the X-ray generator in a horizontal direction and detects X-rays transmitted through a subject. And an X-ray generator 12 and an X-ray detector 14, and a horizontal surface that intersects the direction in which the X-ray generator 12 and the X-ray detector 14 face each other with a subject to be X-rayed. And a horizontal movement unit 19 that can move in the direction.
[Selection] Figure 1

Description

  Embodiments described herein relate generally to an X-ray imaging apparatus.

2. Description of the Related Art In recent years, X-ray imaging apparatuses have been widely used in which a bed that is normally positioned in a horizontal position and that can be rotated in a vertical position is integrated with an X-ray generation unit and an X-ray detection unit. (See Patent Document 1 below). The X-ray generation unit and the X-ray detection unit are arranged to face each other with a top plate provided on the bed. Further, the X-ray generation unit and the X-ray detection unit are configured to be able to change their positions relative to the top plate.
When using such an X-ray imaging apparatus to perform a swallowing contrast examination for imaging from the mouth to the throat and the esophagus, first, the bed positioned in the horizontal position is rotated to the vertical position, and the X-ray generator and X The line detection unit is opposed to the line detection unit in the horizontal direction, and a sitting subject sitting in a chair or a wheelchair is positioned between the X-ray generation unit and the X-ray detection unit.

  In this swallowing contrast examination, alignment is performed such that a region to be imaged from the mouth of the subject to the throat and the esophagus is positioned within the X-ray irradiation region where the X-ray generation unit and the X-ray detection unit face each other. In this alignment, the X-ray generation unit and the X-ray detection unit are moved in the vertical direction according to the body dimensions of the subject, and further, the chair or wheelchair on which the subject is sitting is pushed by hand and moved in the horizontal direction. Is done. The operation of positioning the chair or wheelchair by hand is performed by a radiographer in charge of X-ray imaging. In this way, after the imaging region of the subject is positioned within the X-ray irradiation region, the imaging technician or the like returns to the imaging operation room separated from the examination room where the X-ray imaging device is placed and performs X-ray imaging. Do.

JP 2010-82319 A

  However, in the case where the position of the subject to be imaged is positioned within the X-ray irradiation area by pushing the chair or wheelchair by hand, the imaging engineer returns to the imaging operation room to start X-ray imaging. However, it may be noticed that the imaging region of the subject is deviated from the X-ray irradiation region. In such a case, the technician exits the imaging operation room, enters the examination room, returns to the position near the bed, and pushes the chair or wheelchair by hand to position the subject's imaging site in the X-ray irradiation area. The alignment to be performed must be performed again, and much time and labor are required for the alignment operation for positioning the imaging region of the subject within the X-ray irradiation region.

  The present invention has been made to solve such a problem, and an object of the present invention is to position an object between an X-ray generation unit and an X-ray detection unit that are positioned opposite to each other in the horizontal direction, and perform X-ray analysis. When performing imaging, it is possible to easily perform positioning without taking time and effort to position the imaging region of the subject within the X-ray irradiation region where the X-ray generation unit and the X-ray detection unit face each other. An X-ray imaging apparatus that can be used is provided.

  An X-ray imaging apparatus according to an embodiment includes an X-ray generation unit that generates X-rays, an X-ray detection unit that horizontally faces the X-ray generation unit and detects X-rays transmitted through a subject, and X-ray generation Horizontal movement unit that is disposed between the X-ray detection unit and the X-ray detection unit and that can move in a horizontal direction intersecting a direction in which the X-ray generation unit and the X-ray detection unit face each other with a subject to be X-rayed And comprising.

1 is a perspective view showing an X-ray imaging apparatus according to a first embodiment. It is the sectional view on the AA line of the horizontal movement mechanism part shown in FIG. It is a BB sectional view of the horizontal movement mechanism part shown in FIG. It is a block diagram which shows the electrical connection state of the drive system in an X-ray imaging apparatus. It is a front view which simplifies and shows the state where the subject sitting in the wheelchair is riding on the moving plate of the horizontal movement mechanism. It is explanatory drawing which expands and shows the positional relationship of the to-be-photographed site | part of a subject and X-ray irradiation area | region. It is a flowchart explaining the control operation of the alignment which positions the to-be-photographed site | part of a subject within an X-ray irradiation area | region based on operation of a position adjustment lever. In the X-ray imaging apparatus of 2nd Embodiment, it is a front view which simplifies and shows the state which the subject sat on the chair attached on the moving board of a horizontal movement mechanism part. It is explanatory drawing explaining the state to which the to-be-photographed site | part of a subject moves with the rotation, when the backrest part of the chair where the subject sat is rotated. It is a front view which simplifies and shows the state which performed the alignment which positions the to-be-photographed site | part of the subject which moves with the rotation when rotating the backrest part of a chair in an X-ray irradiation area | region. . It is a block diagram which shows the electrical connection state of the drive system in an X-ray imaging apparatus. It is a flowchart explaining the positioning control operation | movement which positions the to-be-photographed site | part of a test object in an X-ray irradiation area | region performed when the backrest part of a chair is rotated.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing an X-ray imaging apparatus 1. The X-ray imaging apparatus 1 includes an X-ray imaging apparatus main body unit 2 and a horizontal movement mechanism unit 3.

  The X-ray imaging apparatus main body 2 has a base 4 installed on the floor surface in the examination room, and a long bed 5 is rotatably supported by the base 4. As shown in the figure, the bed 5 is rotatably provided at a vertical position in which the longitudinal direction is directed in the up-down direction and a horizontal position in which the longitudinal direction is directed in the horizontal direction. The rotation of the bed 5 is performed by a bed driving motor described later.

  The couch 5 is provided with a long top plate 6 on the side facing upward when the couch 5 is rotated to a horizontal position. The top plate 6 is a portion in which a subject to receive an X-ray examination or the like of the stomach is accommodated in a lying position, and is provided so as to be movable in the longitudinal direction of the bed 5 by a top plate drive motor described later.

  On the surface of the bed 5 on which the top plate 6 is provided, when the bed 5 is rotated, the subject in the prone state accommodated on the top plate 6 maintains its posture and position. As the members, there are provided a footrest 7 on which a foot is placed, a hand grip 8 held by a hand, and a shoulder rest 9 on which a shoulder is applied.

  A holding portion 10 is provided on one side along the longitudinal direction of the bed 5 so as to be movable along the longitudinal direction of the bed 5. The movement of the holding unit 10 is performed by an X-ray generation unit driving motor described later. A stand 11 is erected on the holding unit 10, and an X-ray generation unit 12 that generates X-rays and an X-ray aperture 13 that narrows the irradiation range of the generated X-rays are attached to the distal end side of the stand 11. Yes. The X-ray generator 12 is arranged in a direction to irradiate the generated X-rays toward the top plate 6.

  An X-ray detection unit that detects X-rays generated by the X-ray generation unit 12 and transmitted through the subject is provided on the back side of the bed 5 on the opposite side to the side on which the top plate 6 is provided in the bed 5. 14 is provided. The X-ray detector 14 is provided so as to be movable along the longitudinal direction of the bed 5, and the movement of the X-ray detector 14 is performed by an X-ray detector drive motor described later.

  The X-ray generation unit 12 and the X-ray detection unit 14 face each other in the horizontal direction when the bed 5 is rotated to the vertical position. The X-ray generation unit 12 and the X-ray detection unit 14 are configured to be moved in the same direction in the same direction by an X-ray generation unit drive motor and an X-ray detection unit drive motor, which will be described later.

  Next, the horizontal movement mechanism part 3 operated at the time of swallowing imaging operation will be described.

  The horizontal movement mechanism unit 3 is disposed between the X-ray generation unit 12 and the X-ray detection unit 14 that face each other in the horizontal direction when the bed 5 is rotated to the vertical position, and is placed on the floor surface in the examination room. is set up. This horizontal movement mechanism part 3 has an exterior case 15 formed in a hexahedron shape, and this one surface is an inclined surface part 16 and serves as a slope that assists getting on and off of a wheelchair described later.

  An opening 17 is formed on the upper surface side of the outer case 15, and an endless belt 18 is provided facing the opening 17. On the upper surface of the endless belt 18, a moving plate 19 that is a horizontal moving portion on which a wheelchair described later is placed is attached.

  Further, on the upper surface of the moving plate 19, a pressure is a detection unit that detects that the wheelchair on which the subject is sitting is on the moving plate 19 (the subject is on the moving plate 19). A sensor 20 is attached.

  Furthermore, the structure of the horizontal movement mechanism part 3 is demonstrated with reference to FIG.2 and FIG.3. 2 is a cross-sectional view taken along line AA of the horizontal movement mechanism unit 3 shown in FIG. 1, and FIG. 3 is a cross-sectional view taken along line BB of the horizontal movement mechanism unit 3 shown in FIG.

  The endless belt 18 to which the moving plate 19 and the pressure sensor 20 are attached is stretched between a pair of rollers 21 a and 21 b that are rotatably disposed in the outer case 15. A gear 22 is coaxially fixed to the shaft of the one roller 21a. The gear 22 is connected to a gear 24 of a moving plate drive motor described later via a timing belt 25.

  That is, the endless belt 18 has an X-ray generation unit 12 and an X-ray detection unit 14 which are driven by a driving force of a moving plate drive motor, which will be described later, via a gear 24, a timing belt 25, and a gear 22. It is configured to move in the horizontal direction (arrow X, X ′ direction) that intersects the direction orthogonal to the opposing direction.

  Further, on both sides of the moving plate 19 along the moving direction, there are provided protruding portions 26 bent downward as shown in FIG. The protrusion 26 is slidably engaged with a guide rail 27 provided in the opening 17 of the outer case 15.

  Therefore, the moving plate 19 is configured to move in the horizontal direction with the protruding portion 26 placed on the guide rail 27 as the endless belt 18 moves. Further, the pressure sensor 20 attached to the upper surface of the moving plate 19 also moves together with the moving plate 19.

  Next, a driving system such as a bed driving motor will be described with reference to FIG. FIG. 4 is a block diagram showing an electrical connection state of the drive system in the X-ray imaging apparatus 1.

  A drive control unit 28 controls each drive motor. A bed control lever 29 and a position adjustment lever 30 as an operation unit are connected to the drive control unit 28. The bed operation lever 29 is configured to rotate the bed 5 to a vertical position or a horizontal position. The position adjustment lever 30 is, for example, a biaxial operation type multi-directional lever, which drives the X-ray generation unit 12 and the X-ray detection unit 14 by operation in the front-rear direction, and the top plate 6 or the moving plate 19 by operation in the left-right direction. Is to drive.

  In the drive control unit 28, a mode switching unit 31 that switches the operation mode when operating the position adjustment lever 30 between the first operation mode and the second operation mode is provided. The mode switching unit 31 is configured so that the mode is switched by a signal from the pressure sensor 20. When the signal from the pressure sensor 20 is not input, the mode switching unit 31 is switched to the first mode. Is switched to the second mode.

  Further, the drive control unit 28 includes a bed drive motor 32 that rotates the bed 5 to a vertical position or a horizontal position, and an X-ray generation unit drive motor 33 that is a vertical movement drive unit that moves the X-ray generation unit 12. An X-ray detection unit drive motor 34 that is a vertical movement drive unit that moves the X-ray detection unit 14, a top plate drive motor 35 that moves the top plate 6, and a moving plate drive motor 36 that moves the movement plate 19. It is connected.

  The relationship between the drive motors 33 to 36 and the mode switching of the mode switching unit 31 is that the position adjustment lever 30 is operated in the front-rear direction when the mode switching unit 31 is switched to the first mode. The X-ray generator drive motor 33 and the X-ray detector drive motor 34 are driven, and the top plate drive motor 35 is driven by operating the position adjustment lever 30 in the left-right direction. Further, when the mode switching unit 31 is switched to the second mode, the X-ray generation unit drive motor 33 and the X-ray detection unit drive motor 34 are driven by operating the position adjustment lever 30 in the front-rear direction. The movable plate drive motor 36 is driven by operating the position adjustment lever 30 in the left-right direction. When the X-ray generator drive motor 33 and the X-ray detector drive motor 34 are driven by operating the position adjusting lever 30 in the front-rear direction, the X-ray generator 12 and the X-ray detector 14 are driven by the drive. It is configured to move the same dimension in the same direction.

  Next, the position adjustment of the subject during the swallowing imaging operation will be described with reference to FIGS. 5 and 6. FIG. 5 is a front view illustrating a state where the wheelchair 37 in which the subject is sitting is riding on the horizontal movement mechanism unit 3. FIG. 6 is an explanatory diagram showing, in an enlarged manner, the relationship between the imaging region A of the subject and the X-ray irradiation region B.

  First, the radiographer needs to secure a space in which the wheelchair 37 can enter by rotating the bed 5 positioned in a horizontal position to a vertical position for a normal stomach examination or the like. This operation can be performed by operating the bed control lever 29 installed in the operation room. The operation of the bed control lever 29 is transmitted to the bed driving motor 32, and the bed 5 is rotated to the vertical position by the bed driving motor 32, so that an entry space for the wheelchair 37 is created. At this time, the X-ray generation unit 12 and the X-ray detection unit 14 are integrally rotated with the rotation of the bed 5 and are arranged so as to face each other with the bed 5 interposed therebetween. An X-ray irradiation region B where X-rays are irradiated is located between the unit 12 and the X-ray detection unit 14.

  Next, the imaging technician moves from the imaging operation room to the examination room where the X-ray imaging apparatus is placed, and places the wheelchair 37 on which the subject P is sitting on the horizontal movement mechanism unit 3 as shown in FIG. Then, the wheelchair 37 is pushed and moved to a place where the imaging region A of the subject P is located between the X-ray generation unit 12 and the X-ray detection unit 14. At this time, the imaging engineer stops the wheelchair 37 at a position where the pressure sensor 20 on the moving plate 19 of the horizontal movement mechanism unit 3 is turned on.

  That is, adjustment is performed so that the imaging region A of the subject P is positioned within the X-ray irradiation region B formed by the X-ray generation unit 12 and the X-ray detection unit 14.

  Next, the imaging engineer returns to the imaging operation room and confirms whether the imaging site A of the subject P is properly positioned in the X-ray irradiation region B. At this time, if the region A to be imaged is not at the optimum position for X-ray imaging, the position adjustment is performed as follows without returning to the examination room.

  This position adjustment will be described with reference to the flowchart of FIG. First, the adjustment of the region A to be imaged in the horizontal direction will be described. Here, as described above, the pressure sensor 20 is turned on by the wheelchair 37 (YES in step S1). By this pressure sensor 20, the mode switching unit 31 of the drive control unit 28 is switched to the second drive mode (step S2). In this state, the position adjustment lever 30 is operated (step S3), and while the moving plate 19, the X-ray generator 12 and the X-ray detector 14 are moved, the region A to be imaged is appropriate in the X-ray irradiation region B. Adjust the position.

  At this time, the operation in the front-rear direction of the position adjustment lever 30 is transmitted to the X-ray generation unit drive motor 33 and the X-ray detection unit drive motor 34. The left / right operation of the position adjusting lever 30 is transmitted to the moving plate drive motor 36.

  In this state, first, the position adjustment lever 30 is operated in the front-rear direction to drive the X-ray generator drive motor 33 and the X-ray detector drive motor 34 (step S4). By this operation, the X-ray generation unit 12 and the X-ray detection unit 14 move in the same dimension and in the vertical direction along the longitudinal direction of the bed 5. While confirming the amount of movement, the vertical position of the X-ray irradiation region B is adjusted so as to match the imaging region A of the subject P.

  Next, the position adjusting lever 30 is operated in the left-right direction to drive the moving plate drive motor 36 (step S5). By driving the moving plate drive motor 36, the endless belt 18 moves in the horizontal direction via the gear 24, the timing belt 25, and the gear 22. As the endless belt 18 moves, the moving plate 19 moves, so that the wheelchair 37 on which the subject P sits moves in the horizontal direction. While checking the amount of movement, adjustment is made so that the horizontal position of the imaging region A of the subject P becomes an appropriate position in the X-ray irradiation region B.

  The adjustment of the imaging region A and the X-ray irradiation region B is repeatedly performed until the imaging region A is positioned at an appropriate position in the X-ray irradiation region B (NO in step S6). And this adjustment is complete | finished in the state in which the to-be-photographed site | part A was located in the appropriate position in the X-ray irradiation area | region B (YES of step S6).

  As described above, during the swallowing contrast examination, the second drive mode is selected based on the signal from the pressure sensor 20, and the imaging engineer operates the position adjustment lever 30 installed in the operation chamber in the front-rear direction. The vertical position of the X-ray irradiation region B can be adjusted, and the horizontal position of the imaging region A can be adjusted by operating in the horizontal direction. Thereby, the imaging region A of the subject P can finally be positioned at an appropriate position in the X-ray irradiation region B.

  In the case of a normal stomach examination or the like, since the bed 5 is placed in a horizontal position and the wheelchair 37 is not on the moving plate 19, the pressure sensor 20 is off (in step S1). NO), the position adjustment lever 30 is in the first drive mode (step S7). In this state, the X-ray generator drive motor 33 and the X-ray detector drive motor 34 are driven by operating the position adjustment lever 30 in the front-rear direction to move the X-ray generator 12 and the X-ray detector 14 in the horizontal direction. At the same time, the position adjustment lever 30 is operated in the vertical direction to move the top plate 6 in the horizontal direction so that the examination site is properly arranged in the X irradiation region.

  As described above, the imaging engineer can easily adjust the position according to the examination content without taking time and effort by operating the position adjustment lever 30 without returning to the examination room.

  Further, when the bed 5 is rotated to the horizontal position, the position adjustment lever 30 for moving the X-ray generation unit 12 and the X-ray detection unit 14 and the top plate 6 is moved to the vertical position. The X-ray generator 12 and the X-ray detector 14 and the moving plate 19 can be used, and it is not necessary to provide a new operation unit for moving the moving plate 19, The number of parts in the part can be reduced.

  Furthermore, since the switching of the operation mode of the position adjustment lever 30 by the mode switching unit 31 is automatically performed based on the detection result of the pressure sensor 20, it is possible to prevent the occurrence of a situation where the operation mode of the position adjustment lever 30 is forgotten. be able to.

  In this embodiment, the pressure sensor 20 detects that the subject P sitting on the wheelchair 21 is on the moving plate 19, and the operation mode of the position adjusting lever 30 is automatically set based on the detection result. The case of switching to the second operation mode has been described as an example, but this mode switching may be performed manually.

  In the present embodiment, the case where the X-ray generation unit 12 is moved by the X-ray generation unit drive motor 33 and the X-ray detection unit 14 is moved by the X-ray detection unit drive motor 34 has been described as an example. The X-ray generator 12 and the X-ray detector 14 may be moved by a common motor.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same component as the component demonstrated in 1st Embodiment, and the overlapping description is abbreviate | omitted.

  The basic configuration of the second embodiment is the same as that of the first embodiment, and the difference between the second embodiment and the first embodiment is that a subject in a sitting position when performing a swallowing contrast examination. This is because the imaging region A of the subject P can be imaged from different angles by tilting P in the front-rear direction.

  In this embodiment, as shown in FIG. 8, instead of the wheelchair 37 described in the first embodiment, a chair 38 is attached on the moving plate 19 of the horizontal moving mechanism unit 3 as a portion where the subject P sits. A pressure sensor 20 that detects that the subject P is sitting on the chair 38 is provided below the chair 38.

  Further, the chair 38 is provided with a backrest portion 39 that can be rotated in the front-rear direction. Further, a backrest drive motor that rotates the backrest portion 39 and a rotation angle of the backrest portion 39 are described below. An angle sensor to be described later is provided.

  FIG. 9 shows that when the backrest 39 of the chair 38 is rotated by an angle “θ”, the region A to be imaged of the subject P moves by the dimension “M” in the horizontal direction and moves by the dimension “N” in the vertical direction. It is explanatory drawing which shows a state. Here, the dimension from the seating surface of the chair 38 to the imaging region A of the subject P is indicated by “a”.

  When the backrest 39 is rotated by an angle “θ”, the dimension “M” in which the imaging region A of the subject P moves in the horizontal direction can be calculated by an arithmetic expression “M = a × sin θ”. it can. Further, the dimension “N” by which the imaging region A of the subject P moves in the vertical direction can be calculated by an arithmetic expression “N = a × (1−cos θ)”. These calculations are performed by calculation units (horizontal movement dimension calculation unit, vertical movement dimension calculation unit) in the control unit, which will be described later. In these arithmetic expressions, it is assumed that the center of the region A to be imaged is located on the extension line of the backrest 39.

  FIG. 10 shows that when the backrest 39 is rotated, the subject P is moved in the horizontal direction (arrow X direction) and the X-ray generation unit 12 and the X-ray detection unit 14 are moved downward (arrow Y direction). The X-ray generator 12 and the X-ray detector 14 are aligned so that the X-ray generator 12 and the X-ray detector 14 face each other.

  FIG. 11 is a block diagram showing an electrical connection state of the drive system in the X-ray imaging apparatus 1. Reference numeral 40 denotes a drive control unit that controls each unit based on the input signal. As in the first embodiment, the bed drive motor 32, the X-ray generation unit drive motor 33, and the X-ray detection unit drive motor 34 are provided. The top plate driving motor 35, the moving plate driving motor 36, the pressure sensor 20, the bed operating lever 29, and the position adjusting lever 30 are connected.

  Furthermore, the drive control unit 40 according to the second embodiment includes a backrest rotation operation lever 41 that rotates the backrest 39 and an angle that is a rotation angle detection unit that detects a rotation angle of the backrest 39. The sensor 42 is connected to a backrest drive motor 43 that is a rotation drive that rotates the backrest 39.

  Further, in the drive control unit 40, a horizontal movement dimension “in which the imaging region A of the subject P sitting on the chair 38 and the subject 38 moves in the horizontal direction according to the rotation angle of the backrest 39. The horizontal movement dimension calculation unit 44 that calculates M ”and the movement dimension“ N ”that the imaging site A of the subject P sitting on the chair 38 moves in the vertical direction according to the rotation angle of the backrest part 39 are calculated. And a vertical movement dimension calculating unit 45 is provided.

  FIG. 12 is a flowchart for explaining an alignment control operation for positioning the imaging region A of the subject P in the X-ray irradiation region B when the backrest 39 of the chair 38 is rotated.

  In this control operation, it is first determined whether or not the backrest rotation operation lever 41 has been operated (step 11).

  When the backrest rotation lever 41 is operated (YES in Step S11), the backrest 39 is rotated (Step S12), and the rotation angle of the backrest 39 is detected by the angle sensor 42 (Step S11). S13).

  Based on the detection result of the angle sensor 42, the horizontal movement dimension calculation unit 44 calculates the horizontal movement dimension “M” (step S14), and the vertical movement dimension calculation unit 45 calculates the vertical movement dimension “N”. (Step S15).

  Based on these calculation results, the moving plate drive motor 36 is driven to move the chair 38 in the horizontal direction (step S16), and the X-ray generation unit drive motor 33 and the X-ray detection unit drive motor 34 are moved. By being driven, the X-ray generator 12 and the X-ray detector 14 are moved in the vertical direction (step S17), and the alignment control operation when the backrest 39 is rotated is completed. The horizontal movement in step S16 is performed in the direction opposite to the movement direction with the same dimension as the horizontal movement dimension “M” calculated by the horizontal movement dimension calculation unit 44. Further, the vertical movement in step S17 is performed in the same direction with the same dimension as the vertical movement dimension “N” calculated by the vertical movement dimension calculator 45.

  Thus, even if the imaging region A of the subject P moves in the horizontal direction and the vertical direction as the backrest 39 rotates, the imaging site A of the subject P is within the X-ray irradiation region B. Positioning to be positioned can be automatically performed, and the swallowing contrast examination of the imaging region A can be performed satisfactorily.

  In the second embodiment as well, when the operation mode of the position adjustment lever 30 is switched to the second operation mode by the mode switching unit 31, the object of the subject P based on the operation of the position adjustment lever 30 is changed. The positioning for positioning the imaging region A within the X-ray irradiation region B can be similarly performed based on the flowchart of FIG. 7 described in the first embodiment.

  Therefore, when further adjustment of the region A to be imaged in the X-ray irradiation region B is necessary, the position adjustment lever that has been switched to the second operation mode by the mode switching unit 31 as in the first embodiment. This can be done by operating 30.

  That is, by operating the position adjustment lever 30 in the front-rear direction, the X-ray irradiation region B can be moved in the vertical direction with respect to the region A to be imaged. Vertical alignment can be performed. Further, by operating the position adjusting lever 30 in the left-right direction, the region A to be imaged can be moved in the horizontal direction, and the region A to be imaged and the X-ray irradiation region B can be aligned in the horizontal direction. .

  As described above, the vertical alignment and the horizontal alignment between the imaging region A of the subject P and the X-ray irradiation region B can be easily performed without trouble by operating the position adjustment lever 30. It can be carried out.

  As described above, according to the X-ray imaging apparatus of the present embodiment, the moving plate 19 that is a horizontal movement unit on which the subject P to be X-rayed is placed can be moved by operating the position adjustment lever 30 that is an operation unit. The X-ray generation unit and the X-ray detection unit can be moved in a horizontal direction that intersects the direction in which the X-ray generation unit and the X-ray detection unit are opposed to each other in the horizontal direction. Positioning in the X-ray irradiation region B facing the detection unit 14 can be easily performed without taking time and effort.

  As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. This embodiment and its modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 3 Horizontal movement mechanism part 5 Bed 6 Top plate 12 X-ray generation part 14 X-ray detection part 19 Movement board (horizontal direction movement part)
20 Pressure sensor (detector)
30 Position adjustment lever (control unit)
31 Mode switching unit 33 X-ray generation unit drive motor (vertical movement drive unit)
34 X-ray detection unit drive motor (vertical movement drive unit)
36 Moving plate drive motor (horizontal movement drive unit)
37 Wheelchair 39 Backrest 42 Angle Sensor (Rotation Angle Detection Unit)
43 Backrest drive motor (rotation drive)
45 Vertical movement dimension calculation unit A Imaged part B X-ray irradiation region P Subject

Claims (4)

An X-ray generator for generating X-rays;
An X-ray detector that faces the X-ray generator in the horizontal direction and detects the X-ray transmitted through the subject;
A horizontal direction which is arranged between the X-ray generation unit and the X-ray detection unit and which intersects the direction in which the X-ray generation unit and the X-ray detection unit face each other with the subject to be X-rayed. A horizontal movement unit movable to
An X-ray imaging apparatus comprising: A chair provided on the horizontal movement unit and having a pivotable backrest on which the subject sits;
A rotation drive unit for rotating the backrest unit;
A rotation angle detector that detects a rotation angle of the backrest; and
A vertical movement drive unit that moves the X-ray generation unit and the X-ray detection unit in the vertical direction;
A horizontal movement drive unit for moving the horizontal movement unit in a horizontal direction;
A horizontal movement dimension calculation unit that calculates a horizontal movement dimension in which the imaging part of the subject sitting on the chair moves in a horizontal direction according to a rotation angle of the backrest part;
A vertical movement dimension calculation unit that calculates a vertical movement dimension in which the imaging part of the subject sitting on the chair moves in the vertical direction according to the rotation angle of the backrest;
With
The horizontal movement drive unit moves the horizontal movement unit in the same direction as the horizontal movement dimension calculated by the horizontal movement dimension calculation unit in the direction opposite to the movement direction,
The vertical movement drive unit moves the X-ray generation unit and the X-ray detection unit in the same direction as the movement direction with the same dimension as the vertical movement dimension calculated by the vertical movement dimension calculation unit. The X-ray imaging apparatus according to claim 1. A bed formed in a long shape and rotatably provided in a horizontal position in which the longitudinal direction thereof is directed in the horizontal direction and a vertical position in which the longitudinal direction thereof is directed in the vertical direction;
A couch provided on the bed and movable in the longitudinal direction of the bed;
The X-ray generator and the X-ray detector provided on the bed and movable in the longitudinal direction of the bed;
An operation unit for moving the X-ray generation unit, the X-ray detection unit, the top plate, and the horizontal movement unit;
The operation mode of the operation unit includes a first operation mode for moving the X-ray generation unit, the X-ray detection unit, and the top plate, the X-ray generation unit, the X-ray detection unit, and the horizontal movement unit. A mode switching unit for switching to any one of the second operation modes for moving
The X-ray imaging apparatus according to claim 1, further comprising: A detection unit for detecting that the subject is on the horizontal movement unit;
The X-ray imaging apparatus according to claim 3, wherein the mode switching unit switches the operation mode of the operation unit to the second operation mode according to a detection result of the detection unit.

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