JP2013017569A - X-ray equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide X-ray equipment capable of automatically changing the angle of an X-ray image displayed at a display part to an angle suited to a surgery or the like.SOLUTION: A control part 60 includes: an angle comparison part 61 for comparing a turning azimuth of a C-shaped arm measured by a first digital compass 101, that is, a turning azimuth of a photographing area of an X-ray image by an image intensifier, and a turning azimuth of a bed measured by a second digital compass 102, that is, an azimuth of a body axial direction of a patient; and a rotation angle calculation part 62 for calculating the rotation angle of a collimator 23 and a camera 33 on the basis of a result of comparison performed by the angle comparison part 61.

Description

  The present invention relates to an X-ray imaging apparatus including a C-type arm that supports an X-ray tube and an X-ray detection unit.

  For example, when performing surgery in surgery, an X-ray imaging apparatus called a surgical X-ray apparatus is used. In this X-ray imaging apparatus, an operator moves a C-shaped arm to capture a fluoroscopic image of an affected area during surgery.

  In such an X-ray imaging apparatus, the angle formed by the body axis of the subject and the C-shaped arm, that is, the direction in which the body axis of the subject and the imaging region of the X-ray image by the X-ray detection unit face. If the angle formed is changed, the angle of the image of the affected area being operated displayed on the display unit is also changed accordingly. When the angle of the image of the affected area does not coincide with the direction of the affected area during the operation, it is difficult for the doctor to confirm the image of the affected area. For this reason, in such a case, the operator rotates the image by operating the operation panel or the like in response to an instruction from the doctor.

  In Patent Document 1, in order to rotationally correct the display image rotated by positioning, a test perspective is performed, the perspective image is stored in the image memory, the stored image is displayed on the sub-monitor, and the image rotation switch is operated. The image is rotated by the image rotation circuit so that the display image of the sub-monitor becomes a normal image, the image rotation angle by the image rotation switch is detected by the rotation angle determination circuit, and the detection signal is input to the camera rotation control circuit to operate the motor. An X-ray imaging apparatus that controls and rotationally drives a TV camera that is rotatably mounted on an image intensifier is disclosed.

JP 09-298687 A

  Depending on the state of the operation, the doctor's surgical position and surgical posture with respect to the patient change, and therefore it is necessary to move the C-arm many times during the operation. For this reason, with the movement of the C-arm, it is necessary to frequently perform the above-described manual image rotation operation, which is extremely complicated. The same applies to the case where work such as test fluoroscopy is performed as described in Patent Document 1. In addition, rotation of the image is performed according to a doctor's instruction. However, even if the doctor verbally instructs the operator, the intention may not be smoothly transmitted.

  The present invention has been made to solve the above-described problem, and provides an X-ray imaging apparatus capable of automatically changing the angle of an X-ray image displayed on a display unit to an angle suitable for surgery or the like. The purpose is to provide.

  The invention described in claim 1 is an X-ray tube, a collimator that limits an X-ray irradiation region irradiated from the X-ray tube to form an X-ray irradiation field, and an object irradiated from the X-ray tube An X-ray detection unit that detects X-rays that have passed through, a C-shaped arm having an arc shape and supporting the X-ray tube and the X-ray detection unit, and an X detected by the X-ray detection unit An X-ray imaging apparatus comprising: a display unit configured to display an X-ray image based on a line; and an azimuth measuring device that measures an azimuth in which an imaging region of the X-ray image by the X-ray detection unit faces; and the azimuth measuring device And an angle changing means for changing the angle of the X-ray image displayed on the display unit based on the direction in which the imaging region of the X-ray image is measured.

  According to a second aspect of the present invention, in the first aspect of the present invention, the azimuth measuring device is connected to the C-type arm, and the X-ray detection is performed by measuring a direction in which the C-type arm faces. The direction in which the imaging region of the X-ray image by the unit faces is measured.

  According to a third aspect of the present invention, in the second aspect of the present invention, the azimuth measuring device is a digital compass.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the angle changing means changes an X-ray detection angle by the X-ray detection unit and an angle of the collimator. As a result, the angle of the X-ray image displayed on the display unit is changed.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to third aspects, the angle changing unit performs image processing on image information input to the display unit, whereby the display unit The angle of the X-ray image displayed on the screen is changed.

  The invention according to claim 6 is the invention according to any one of claims 1 to 5, further comprising a second orientation measuring device that measures the orientation of the subject in the body axis direction, and the angle The changing means is a second azimuth measuring device that measures the azimuth measured by the azimuth measuring device that measures the azimuth in which the imaging region of the X-ray image is directed by the X-ray detector and the azimuth in the body axis direction of the subject. The angle of the X-ray image displayed on the display unit is changed based on the azimuth measured by.

  According to a seventh aspect of the present invention, in the sixth aspect of the invention, the angle changing means includes an azimuth measured by an azimuth measuring device that measures an azimuth in which the X-ray image capturing region of the X-ray detection unit faces. The X-ray image displayed on the display unit is rotated by the intersection angle with the azimuth measured by the second azimuth measuring device that measures the azimuth in the body axis direction of the subject.

  The invention according to claim 8 is the invention according to claim 6, wherein the second orientation measuring device is connected to the bed on which the subject is placed, and measures the orientation in which the bed faces. To measure the orientation of the subject in the body axis direction.

  According to a ninth aspect of the present invention, in the invention according to any one of the first to fifth aspects, the azimuth information when the azimuth of the X-ray image capturing region by the X-ray detection unit is an optimum angle. The angle changing means changes the angle of the X-ray image displayed on the display section using the azimuth information stored in the storage means.

  According to a tenth aspect of the present invention, in the invention according to the ninth aspect, the angle changing means has the X-ray when the direction in which the X-ray image radiographing region by the X-ray detection unit faces is an optimal angle. X-ray images to be displayed on the display unit only at the intersection angle between the direction in which the X-ray image capturing region by the detection unit faces and the direction in which the X-ray image capturing region by the X-ray detection unit faces during X-ray imaging. Rotate.

  According to the first aspect of the present invention, since the angle of the X-ray image displayed on the display unit is changed based on the direction in which the imaging region of the X-ray image measured by the azimuth measuring device is directed, the display is displayed on the display unit. It becomes possible to automatically change the angle of the X-ray image to be an angle suitable for surgery or the like.

  According to the second aspect of the present invention, by measuring the direction in which the C-shaped arm is directed, it is possible to easily detect the direction in which the X-ray image capturing region is directed by the X-ray detection unit.

  According to the third aspect of the present invention, it is possible to easily measure the azimuth of the X-ray image capturing region of the X-ray detection unit using a commercially available digital compass.

  According to the fourth aspect of the present invention, the angle of the X-ray image displayed on the display unit is changed without performing image processing by changing the X-ray detection angle by the X-ray detection unit and the angle of the collimator. It becomes possible to do.

  According to the fifth aspect of the present invention, the angle of the X-ray image displayed on the display unit is changed without moving the X-ray detection unit or the like by performing image processing on the image information input to the display unit. Is possible.

  According to the sixth and seventh aspects of the present invention, the azimuth measured by the azimuth measuring device that measures the azimuth in which the X-ray image capturing region is directed by the X-ray detector, and the azimuth in the body axis direction of the subject The X-ray image angle displayed on the display unit is changed to an appropriate position regardless of the arrangement of the X-ray detection unit or the subject based on the orientation measured by the second orientation measuring device It becomes possible to do.

  According to the eighth aspect of the present invention, the angle of the X-ray image displayed on the display unit can be easily changed to an appropriate position based on the direction in which the bed faces.

  According to the ninth and tenth aspects of the present invention, even when a single azimuth measuring device is used, X displayed on the display unit regardless of the arrangement of the X-ray detection unit and the arrangement of the subject. It becomes possible to change the angle of the line image to an appropriate position.

1 is a schematic diagram of an X-ray imaging apparatus according to a first embodiment of the present invention. 2 is a perspective view showing a main part of a collimator 23 together with an X-ray tube 21. FIG. It is explanatory drawing which shows a mode that it performs fluoroscopy by the X-ray imaging apparatus which concerns on this invention when performing an operation with respect to the patient. It is explanatory drawing which shows a mode that it performs fluoroscopy by the X-ray imaging apparatus which concerns on this invention when performing an operation with respect to the patient. 4 is a schematic diagram showing a fluoroscopic image displayed on the display unit 17. FIG. It is a block diagram which shows the control system of the X-ray imaging apparatus which concerns on 1st Embodiment of this invention. It is a block diagram which shows the control system of the X-ray imaging apparatus which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the control system of the X-ray imaging apparatus which concerns on 3rd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram of an X-ray imaging apparatus according to the first embodiment of the present invention.

  This X-ray imaging apparatus is for performing fluoroscopy when performing surgery in surgery, and includes an apparatus body 11 that can be moved by wheels 12. The X-ray imaging apparatus includes an X-ray irradiation unit including an X-ray tube 21 and a collimator 23 that limits an X-ray irradiation region irradiated from the X-ray tube 21 to form an X-ray irradiation field. An image intensifier (II) 32 that detects and visualizes X-rays that have been irradiated from the X-ray tube 21 and passed through the patient, and an image visualized by the image intensifier 32. An X-ray detection unit including a camera 33 to be imaged, and a C-arm 13 that supports the X-ray irradiation unit and the X-ray detection unit are provided.

  The C-shaped arm 13 has an arc shape, and the X-ray irradiation unit and the X-ray detection unit are arranged such that the X-ray axis from the X-ray tube 21 to the image intensifier 32 coincides with the diameter of the arc. Support in the state. The C-shaped arm 13 is slidably supported with respect to the arm support portion 14. The arm support portion 14 is supported so as to be movable in the horizontal direction and the vertical direction with respect to the apparatus main body 11. The movement of the C-arm is executed by the operator holding and moving a handle (not shown).

  The collimator 23 rotates around the X-ray axis extending from the X-ray tube 21 to the image intensifier 32 with respect to the C-arm 13 by driving a collimator rotating motor 82 described later. The camera 33 also rotates about the X-ray axis extending from the X-ray tube 21 to the image intensifier 32 with respect to the C-arm 13 by driving a camera rotation motor 83 described later.

  The X-ray imaging apparatus includes a display unit 17 such as an LCD for displaying an X-ray image based on the X-rays detected by the X-ray detection unit, and an input unit 16 including a retractable keyboard. The unit 15 is provided. The monitor unit 15 is movable by the action of the wheels 18.

  Furthermore, a first digital compass 101 is disposed at the upper end of the arm support 14 that supports the C-arm 13 in this X-ray imaging apparatus. The first digital compass 101 is for measuring the direction in which the imaging area of the X-ray image by the image intensifier 32 faces by measuring the direction in which the C-arm 13 faces. As will be described later, the second digital compass 102 is disposed on the bed 19 on which the patient 41 is placed. The second digital compass 102 is for measuring the orientation of the patient 41 in the body axis direction by measuring the orientation of the bed 19. These first and second digital compasses 101 and 102 function as an azimuth measuring device that detects geomagnetism by an electronic sensor and measures the azimuth.

  FIG. 2 is a perspective view showing a main part of the collimator 23 together with the X-ray tube 21.

  Each of the collimators 23 includes four collimator leaves 24 that can independently reciprocate. Based on the positions of these collimator leaves 24, the opening amount of the collimator 23 is determined, and by the action of these collimator leaves 24, a visual field E that is an X-ray region irradiated to the patient from the X-ray tube 21 is defined. The

  FIGS. 3 and 4 are explanatory views showing a state in which fluoroscopy is performed by the X-ray imaging apparatus according to the present invention when performing surgery on the patient 41. In this embodiment, the case where surgery is performed on the knee of the patient 41 is shown.

  When performing fluoroscopy with surgery, the patient 41 is in a supine position on the bed 19. The doctor 42 performs the operation at a position closest to the knee of the patient 41 to be operated. An assistant 43 is disposed at a position on the bed 19 opposite to the doctor 42. The apparatus main body 11 and the C-type arm 13 of the X-ray imaging apparatus are arranged at positions that do not interfere with the doctor 42 and the assistant 43. The operator 44 also operates the X-ray imaging apparatus at a position that does not interfere with the doctor 42 and the assistant 43.

  As shown in FIGS. 3 and 4, depending on the situation of the operation, the positions of the doctor 42 and the assistant 43 may be reversed with respect to the patient 41, and the arrangement of the X-ray imaging apparatus may be reversed accordingly. is there. At this time, the operation position of the operator 44 with respect to the apparatus main body 11 is reversed. For this reason, a pair of operation panels 51 and 54 are provided on the apparatus main body 11, and the pair of operation panels 51 and 54 are arranged at positions on both sides of the apparatus main body 11 with respect to the C-arm 13. It is installed. The operation panel 51 is provided with a pair of memory keys 52 and 53, and the operation panel 54 is provided with a pair of memory keys 55 and 56.

  FIG. 5 is a schematic diagram showing a fluoroscopic image displayed on the display unit 17.

  When the X-ray imaging apparatus is arranged in the state shown in FIG. 3 or FIG. 4, the X-ray fluoroscopic image is inclined as shown in FIG. In this state, since it is difficult for the doctor 42 to confirm the image of the affected area, it is preferable to rotate the image as shown in FIG. For this reason, in this X-ray imaging apparatus, an image is rotated using first and second digital compasses 101 and 102 described later. In the state shown in FIG. 5A, areas other than the affected area are also displayed, but unnecessary areas are deleted by adjusting the X-ray irradiation field. At this time, the entire collimator 23 is rotated by driving a collimator rotating motor 82 described later, and the camera 33 is rotated by driving a camera rotating motor 83 described later. Further, the collimator leaf 24 in the collimator 23 moves.

  FIG. 6 is a block diagram showing a control system of the X-ray imaging apparatus according to the first embodiment of the present invention.

  This X-ray imaging apparatus includes a control unit 60 that controls the entire apparatus. The control unit 60 includes an orientation measured by the first digital compass 101 toward the C-arm 13, that is, an orientation directed to an X-ray image capturing area by the image intensifier 32, and a bed measured by the second digital compass 102. The angle comparison unit 61 that compares the azimuth 19 direction, that is, the azimuth in the body axis direction of the patient 41, and the rotation angle calculation that calculates the rotation angle of the collimator 23 and the camera 33 based on the comparison result by the angle comparison unit 61. Part 62.

  The control unit 60 is connected to the X-ray tube 21, the input unit 16, the display unit 17, the collimator 23, and the camera 33 through the interface 81. The control unit 60 also rotates a collimator rotation motor for rotating the collimator 23 with respect to the C-arm 13 around the X-ray axis extending from the X-ray tube 21 to the image intensifier 32 via the interface 81. 82. The control unit 60 also rotates a camera rotation motor for rotating the camera 33 with respect to the C-arm 13 around the X-ray axis extending from the X-ray tube 21 to the image intensifier 32 via the interface 81. 83. Further, the control unit 60 is also connected to the first and second digital compasses 101 and 102 via the interface 81. The control unit 60 and the second digital compass 102 are connected by wireless communication.

  When performing fluoroscopy at the time of surgery using the X-ray imaging apparatus having the above configuration, the first digital compass 101 always measures the direction in which the imaging area of the X-ray image by the image intensifier 32 is directed. At the same time, the second digital compass 102 always measures the orientation of the patient 41 in the body axis direction. Then, the angle comparison unit 61 in the control unit 60 determines the orientation of the X-ray image capturing area measured by the image intensifier 32 measured by the first digital compass 101 and the body axis of the patient 41 measured by the second digital compass 102. The rotation angle calculation unit 62 in the control unit 60 compares the direction (longitudinal direction of the bed) with the azimuth of the X-ray image, that is, the display unit 17 based on the comparison result by the angle comparison unit 61. The rotation angle of the collimator 23 and the camera 33 is calculated so that the displayed image has an optimum angle for the operation by the doctor 42.

  Here, the optimal angle for the operation by the doctor 42 is such that the direction of the affected part when the doctor 42 directly views the affected part of the patient 41 matches the direction of the affected part in the image displayed on the display unit 17. Is an angle. For example, as shown in FIG. 5, when the doctor 42 performs an operation while viewing the legs laterally from the side of the leg that is the affected part of the patient 41 as shown in FIG. The angle at which the leg image is arranged in the horizontal direction on the portion 17, that is, the angle at which the longitudinal direction of the bed 19 is arranged in the horizontal direction is the optimum angle.

  Here, for example, when the azimuth of the X-ray image capturing region by the image intensifier 32 coincides with the longitudinal direction of the bed 19 measured by the second digital compass 102, the longitudinal direction of the bed 19 is displayed. In the case where the setting is displayed in the horizontal direction on the unit 17, the orientation in which the imaging region of the X-ray image by the image intensifier 32 faces and the longitudinal orientation of the bed 19 measured by the second digital compass 102 If there is an angle difference, the image is inclined by that angle. Therefore, in order to always display the longitudinal direction of the bed 19 in the horizontal direction on the display unit 17, it is necessary to rotate the image by this angle. For this reason, the rotation angle calculation unit 62 in the control unit 60 determines the orientation of the X-ray image capturing area measured by the image intensifier 32 measured by the first digital compass 101 and the bed 19 measured by the second digital compass 102. The intersection angle with the longitudinal direction is calculated.

  This calculation result is transmitted from the control unit 60 to the collimator rotation motor 82 and the camera rotation motor 83 via the interface 81. The entire collimator 23 is rotated by driving the collimator rotating motor 82, and the camera 33 is rotated by driving the camera rotating motor 83. As described above, the rotation angle at this time is determined by the orientation of the X-ray image capturing area measured by the image intensifier 32 measured by the first digital compass 101 and the longitudinal direction of the bed 19 measured by the second digital compass 102. The angle corresponds to the angle of intersection with the azimuth. Thereby, the imaging region of the X-ray image, that is, the image displayed on the display unit 17 automatically becomes an optimum angle for the operation by the doctor 42. For this reason, as in the prior art, every time the angle of the C-arm 13 is changed, a complicated operation in which the operator receives an instruction from the doctor and operates the operation panel or the like to rotate the image becomes unnecessary.

  Next, another embodiment of the present invention will be described. FIG. 7 is a block diagram showing a control system of the X-ray imaging apparatus according to the second embodiment of the present invention.

  In the first embodiment described above, by rotating the collimator 23 and the camera 33, the X-ray image capturing region, that is, the image displayed on the display unit 17 is rotated. On the other hand, in the X-ray imaging apparatus according to the second embodiment, the image processing unit 64 in the control unit 60 performs image processing on image information input to the display unit 17 to display on the display unit 17. The angle of the X-ray image to be changed is changed.

  That is, in the X-ray imaging apparatus according to the second embodiment, the angle comparison unit 61 uses the first digital compass 101 to measure the orientation in which the imaging region of the X-ray image by the image intensifier 32 faces and the second digital compass. While comparing with the direction of the body axis direction of the patient 41 measured by the compass 102, the rotation angle calculation unit 62 displays the image displayed on the display unit 17 for the operation by the doctor 42 based on the comparison result by the angle comparison unit 61. The rotation angle of the collimator 23 and the camera 33 to obtain an optimum angle is calculated. Then, the image processing unit 64 in the control unit 60 rotates the captured image by the camera 33 based on the calculation result by the rotation angle calculation unit 62, and transmits the image to the display unit 17.

  In the X-ray imaging apparatus according to the second embodiment, the X-ray image displayed on the display unit 17 even when the collimator rotation motor 82 and the camera rotation motor 83 of the X-ray imaging apparatus according to the first embodiment are omitted. It is possible to change the angle.

  Next, still another embodiment of the present invention will be described. FIG. 8 is a block diagram showing a control system of the X-ray imaging apparatus according to the third embodiment of the present invention.

  In the X-ray imaging apparatus according to the first and second embodiments described above, the first digital compass 101 for measuring the orientation in which the imaging region of the X-ray image faces and the orientation of the patient 41 in the body axis direction are measured. However, in the third embodiment, only the first digital compass 101 for measuring the direction in which the imaging region of the X-ray image faces is used. . Then, the control unit 60 of the X-ray imaging apparatus according to the third embodiment stores the optimum angle for storing the orientation information when the orientation in which the imaging region of the X-ray image by the image intensifier 32 is the optimum angle. A storage unit 63 is provided.

  In the X-ray imaging apparatus according to the third embodiment, the affected part of the patient 41 is seen through before performing the fluoroscopy, and the image displayed on the display unit 17 is rotated to an optimum angle for surgery. Then, the orientation of the image intensifier 32 at this time, that is, the orientation of the C-arm 13 is used as orientation information when the orientation in which the imaging region of the X-ray image by the image intensifier 32 faces is an optimal angle. It is stored in the optimum angle storage unit 63.

  When performing fluoroscopy, the rotation angle calculation unit 62 in the control unit 60 stores in the optimum angle storage unit 63 the azimuth of the X-ray image capturing area measured by the image intensifier 32 measured by the first digital compass 101. Based on the azimuth information, the rotation angle of the collimator 23 and the camera 33 is calculated so that the imaging region of the X-ray image, that is, the image displayed on the display unit 17 becomes an optimum angle for the operation by the doctor 42. This calculation result is transmitted from the control unit 60 to the collimator rotation motor 82 and the camera rotation motor 83 via the interface 81 as in the case of the first embodiment. The entire collimator 23 is rotated by driving the collimator rotating motor 82, and the camera 33 is rotated by driving the camera rotating motor 83. The rotation angle at this time is an angle formed by the azimuth of the C-arm 13 stored in advance in the optimum angle storage unit 63 as azimuth information and the azimuth of the C-arm 13 when currently performing fluoroscopy. Thereby, the imaging region of the X-ray image, that is, the image displayed on the display unit 17 automatically becomes an optimum angle for the operation by the doctor 42.

  In the third embodiment, the azimuth information when the azimuth of the X-ray image taking region is the optimum angle is stored in the optimum angle storage unit 63, so that the bed 19 does not move. Only with the digital compass, the image displayed on the display unit 17 can be automatically set to an optimum angle for surgery by the doctor 42.

  Note that, in each of the above-described embodiments, the X-ray detection unit includes the image intensifier 32 that detects and visualizes X-rays and the camera 33 that captures an image visualized by the image intensifier 32. However, a flat panel detector may be used as the X-ray detector. In this case, instead of rotating the camera 33, the entire flat panel detector is rotated.

  In the above-described embodiment, the first digital compass 101 is attached to the arm support unit 14 that connects the C-arm, but the first digital compass 101 is used to capture an X-ray image by the image intensifier 32. Any other position may be used as long as it can measure the azimuth of the region.

  Further, the second digital compass 102 may be provided for each of the plurality of beds 19 so that fluoroscopic imaging can be performed on each bed by a single X-ray imaging apparatus according to the present invention. The second digital compass 102 may be detachable from the bed 19 so that the X-ray imaging apparatus according to the present invention can be used for an arbitrary bed.

DESCRIPTION OF SYMBOLS 11 Apparatus main body 13 C type arm 14 Arm support part 15 Monitor part 16 Input part 17 Display part 19 Bed 21 X-ray tube 23 Collimator 24 Collimator leaf 32 Image intensifier 33 Camera 41 Patient 42 Doctor 43 Assistant 44 Operator 60 Control part 61 angle comparison unit 62 rotation angle calculation unit 63 optimum angle storage unit 64 image processing unit 82 collimator rotation motor 83 camera rotation motor 101 first digital compass 102 second digital compass

Claims (10)

An X-ray tube, a collimator for limiting an X-ray irradiation region irradiated from the X-ray tube to form an X-ray irradiation field, and X for detecting X-rays irradiated from the X-ray tube and passing through the subject An X-ray image is displayed based on a X-ray detected by the X-ray detection unit, a C-shaped arm having an arc shape, and supporting the X-ray tube and the X-ray detection unit An X-ray imaging apparatus comprising:
An azimuth measuring device for measuring an azimuth in which an imaging region of an X-ray image by the X-ray detection unit faces
An angle changing means for changing an angle of the X-ray image displayed on the display unit based on an orientation in which an imaging region of the X-ray image measured by the orientation measuring device is directed;
An X-ray imaging apparatus comprising: The X-ray imaging apparatus according to claim 1,
The azimuth measuring device is connected to the C-type arm and measures the azimuth of the X-ray image captured by the X-ray detector by measuring the azimuth of the C-type arm. . The X-ray imaging apparatus according to claim 2,
The azimuth measuring device is an X-ray imaging apparatus which is a digital compass. The X-ray imaging apparatus according to any one of claims 1 to 3,
The angle changing unit is an X-ray imaging apparatus that changes an angle of an X-ray image displayed on the display unit by changing an X-ray detection angle by the X-ray detection unit and an angle of the collimator. The X-ray imaging apparatus according to any one of claims 1 to 3,
The angle changing unit is an X-ray imaging apparatus that changes an angle of an X-ray image displayed on the display unit by performing image processing on image information input to the display unit. The X-ray imaging apparatus according to any one of claims 1 to 5,
A second orientation measuring device for measuring the orientation of the subject in the body axis direction;
The angle changing means includes an azimuth measured by an azimuth measuring device that measures an azimuth in which the X-ray image capturing region of the X-ray detection unit faces, and a second azimuth that measures the azimuth in the body axis direction of the subject. An X-ray imaging apparatus that changes an angle of an X-ray image displayed on the display unit based on an orientation measured by a measuring instrument. The X-ray imaging apparatus according to claim 6,
The angle changing means includes an azimuth measured by an azimuth measuring device that measures an azimuth in which the X-ray image capturing region of the X-ray detection unit faces, and a second azimuth that measures the azimuth in the body axis direction of the subject. An X-ray imaging apparatus that rotates an X-ray image displayed on the display unit by an intersection angle with an orientation measured by a measuring instrument. The X-ray imaging apparatus according to claim 6,
The second azimuth measuring device is connected to a bed on which the subject is placed, and X-ray imaging that measures the azimuth in the body axis direction of the subject by measuring the azimuth toward the bed. apparatus. The X-ray imaging apparatus according to any one of claims 1 to 5,
Storage means for storing azimuth information when the azimuth of the X-ray image capturing region by the X-ray detection unit is an optimum angle;
The angle changing unit is an X-ray imaging apparatus that changes the angle of an X-ray image displayed on the display unit using azimuth information stored in the storage unit. The X-ray imaging apparatus according to claim 9, wherein
The angle changing means includes an orientation in which an X-ray image capturing area by the X-ray detection unit faces when an orientation in which an X-ray image capturing area by the X-ray detection unit faces is an optimum angle, and X-ray imaging An X-ray imaging apparatus that rotates an X-ray image displayed on the display unit by an intersection angle with an orientation in which an X-ray image imaging region of the X-ray detection unit faces.

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