JP4930131B2 - X-ray fluoroscopic equipment - Google Patents

Description

  The present invention relates to an X-ray fluoroscopic apparatus that performs X-ray fluoroscopy and X-ray imaging from multiple directions of a subject in a state where an X-ray tube and an X-ray detector are supported to face each other.

  As an apparatus that performs X-ray fluoroscopy and X-ray imaging, there is an X-ray fluoroscopic apparatus having a C-arm. In this X-ray fluoroscopic apparatus, an X-ray tube and an X-ray detector (image intensifier, TV camera, FPD, etc.) are fixed to both ends of the C arm so as to sandwich a subject placed on a top plate. A holding device configured to be configured.

  In the holding device, the C arm itself can move along the arc of the C arm, and the position of the C arm in the vertical axis and horizontal axis directions and the angle around each axis can be adjusted. An X-ray image of a person can be acquired at any position (height direction and horizontal direction) from any direction (direction around a vertical axis and directions around two horizontal axes orthogonal to each other).

Although the operation of the holding device is complicated as described above, there is provided an X-ray imaging apparatus that allows an operator to easily and quickly perform imaging from multiple directions. That is, the operation direction and the operation angle (target operation information) of the target holding device are input via the input means. At this time, the target operation information is stored in a memory switch associated with the operation direction and the operation angle among the plurality of memory switches of the operation means. When actually taking a picture, the operator looks at the operation means and selects and operates the memory switch provided at the position related to the target operation information. Since the plurality of memory switches provided in the operating means are related to the target operation information, the operator can determine which memory switch to operate to obtain a desired operation. it can. Then, the operation means outputs the target operation information stored in the operated memory switch to the operation control means. The operation control unit controls the operation of the holding device so that the input target operation information matches the actual operation information (actual operation direction and operation angle of the holding device) from the position detection unit (for example, Patent Documents). 1).
JP-A-8-150137

  In the operation of the holding device of the X-ray fluoroscopic apparatus, the operator may be required to quickly return the holding device to a previous (previous) position and angle state. When the operation button for storing information is not pressed, it is necessary to perform a complicated operation again to restore the holding device, which causes stress during operation for the operator. An object of the present invention is to provide an X-ray fluoroscopic apparatus that eliminates the above-mentioned complicated operation, can easily return the holding device to a past position and angle, and can perform an operation with less stress for the operator. There is to do.

An X-ray tube that generates X-rays, an X-ray detector that is disposed opposite to the X-ray tube and receives X-rays transmitted through a subject, and holds the X-ray tube and the X-ray detector in X-ray fluoroscopic apparatus comprising a holding device, and the detection unit for detecting the angle information of the holding device, and the angle information storing means, when the operation signal for moving the holding device is entered, the operation signal The holding device reads angle information of the stop state immediately before the occurrence of occurrence from the detection unit, stores it in the angle information storage unit via the control unit, and stores the angle information in the angle information storage unit by operating the return button of the operator. And a computer for returning the holding device to a state of a past angle from the current stop angle based on the stored past angle information .

  The operator of the holding device can easily return the holding device to the past position and angle state easily by pressing the return button, and the operator has less stress during operation and efficient diagnosis. An X-ray fluoroscopic apparatus capable of being provided can be provided.

  A contact detection switch is provided on the front surface of the X-ray tube and the X-ray detector and on the C-arm base to ensure the safety of the subject and the operator.

  Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a diagram showing a schematic configuration of an X-ray fluoroscopic apparatus according to the present invention. In FIG. 1, X-rays radiated from an X-ray tube 1 supported on one end of a C-arm constituting the holding device 3 pass through a subject M mounted on an examination table 4, and the X-ray tube 1 Opposite to the X-ray detector 2 that is supported at the other end of the C-arm. The X-ray detector 2 is composed of, for example, an X-ray image intensifier or the like, and an X-ray fluoroscopic image is generated from the output signal.

  The holding device 3 is composed of a C-arm and a base part, and can move in a horizontal movement a, a sliding direction movement b, and a rotation direction movement c of the C-arm, and is fixed to the floor via the base part. Has been.

  The base part has a link structure having three rotation shafts. The horizontal movement a of the C-arm is controlled by the computer 5 through the drive unit 33 and the control unit 36 provided with a motor, and the C-arm is translated in the longitudinal and lateral directions. The movement b of the C arm in the sliding direction is controlled by the computer 5 via a drive unit 31 and a control unit 34 each having a motor. The movement c of the C arm in the rotational direction is controlled by the computer 5 via a drive unit 32 and a control unit 35 provided with a motor.

  The position of the C-arm in the horizontal direction is detected by a detector 39 including a plurality of rotary encoders that are connected to the drive unit 33 and rotate, and is input to the computer 5 via the control unit 36. The position of the C-arm in the sliding direction is detected by a detector 37 configured by a rotary encoder that is connected to the drive unit 31 and rotates, and is input to the computer 5 via the control unit 34. The angle of the rotation direction of the C-arm is detected by a detector 38 configured by a rotary encoder that is connected to the drive unit 32 and rotates, and is input to the computer 5 via the control unit 35.

  When an operation signal generated by an operator operating an operation lever provided in the operation unit 7 is input to the computer 5, the computer 5 moves the C arm in the horizontal direction, slide direction, and rotation direction before moving the C arm. The position or angle in each direction is read from the detectors 37, 38, 39 via the control units 34, 35, 36 and stored in the information memory 6 in the horizontal direction, slide direction, and rotation direction of the C arm. Overwrite position or angle values.

  The operation signal includes information such as the rotation / parallel movement of the C arm intended by the operator and the movement in the slide direction, and the computer 5 stores the horizontal direction / slide direction of the C arm stored in the information memory 6. -After updating the position or angle value in each direction of the rotation direction, the horizontal of the C arm detected by the detectors 37, 38, 39 via the control units 34, 35, 36 and the drive units 31, 32, 33 The C-arm is moved so that the position or angle in each direction of the direction, slide direction, and rotation direction matches the target value.

  When the return button 8 is pressed by the operator, the computer 5 causes the horizontal direction of the C arm detected by the detectors 37, 38, 39 via the control units 34, 35, 36 and the drive units 31, 32, 33. The C arm is moved so that the value of the position or angle in each direction of the slide direction and the rotation direction matches the value stored in the information memory 6. Therefore, the operation of the return button 8 returns the C-arm to the past position and angle.

  FIG. 2 is a flowchart showing a schematic operation of the X-ray fluoroscopic apparatus of the present invention. In FIG. 2, when an operator starts an operation using an operation lever or the like provided in the operation unit 7 to move the C arm (step S1), before the C arm moves, the horizontal direction, slide direction, The computer 5 reads the position or angle value in each direction of the rotation direction from the detectors 37, 38, 39 via the control units 34, 35, 35, and is stored in the information memory 6 in the horizontal direction, slide direction, and rotation. The process proceeds to step 3 by overwriting the position or angle value of each direction (step S2).

  An operation signal generated by an operation lever or the like is input to the computer 5, and the computer 5 detects the C arm detected by the detectors 37, 38, and 39 through the control units 34, 35, and 36 and the drive units 31, 32, and 33. The C-arm is moved so that the position or angle value in each of the horizontal direction, the sliding direction, and the rotational direction coincides with the value intended by the operator (step S3). The operator observes the fluoroscopic image (step S4), and when the operator needs an X-ray fluoroscopic image of the position and angle of the past C arm, the operator presses the return button 8; Do not push. If the return button 8 is pressed, the process proceeds to step S6, and if not, the process proceeds to step 7 (step 5).

  When the return button 8 is pressed, the computer 5 stores in the information memory 6 the position or angle values of the C-arm in the horizontal direction, slide direction, and rotation direction detected by the detectors 37, 38, and 39. The C-arm is moved through the control units 34, 35, 36 and the drive units 31, 32, 33 so as to coincide with the set value, and the process returns to step 4 (step S6). If the return button 8 is not pressed and the operation is continued, the process returns to step S1, and if the operation is not continued, the process is terminated (step S7).

  Since the present invention has the above configuration, when the operator of the holding device 3 needs a past X-ray fluoroscopic image, the C-arm of the holding device 3 can be easily moved to the past by pressing the return button 8. It is possible to provide an X-ray fluoroscopic apparatus that can quickly return to a position and an angle state, and that can be efficiently diagnosed by an operator with less stress during operation.

  In the embodiment shown in FIG. 1, the holding device 3 is a floor-mounted type, but the present invention can also be applied to a holding device having a structure in which a C-arm is suspended from the ceiling wall instead of the floor-mounted type. The presence device is not limited to the illustrated example.

  The present invention relates to an X-ray fluoroscopic apparatus that performs X-ray fluoroscopy and X-ray imaging from multiple directions of a subject in a state where an X-ray tube and an X-ray detector are supported to face each other.

It is a figure which shows schematic structure of the X-ray fluoroscopic apparatus of this invention. It is a flowchart which shows the operation | movement of the outline of the X-ray fluoroscopic apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 X-ray tube 2 X-ray detector 3 Holding device 4 Examination table 5 Computer 6 Information memory 7 Operation part 8 Return button 31 Drive part 32 Drive part 33 Drive part 34 Control part 35 Control part 36 Control part 37 Detector 38 Detector 39 Detector a Horizontal movement b Slide direction movement c Rotation direction movement M Subject

Claims (1)

An X-ray tube that generates X-rays, an X-ray detector that is disposed opposite to the X-ray tube and receives X-rays transmitted through a subject, and holds the X-ray tube and the X-ray detector in X-ray fluoroscopic apparatus comprising a holding device, a detecting section for detecting the angle information of the holding device, and the angle information storing means, when the operation signal for moving the holding device is entered, the operation signal Is read from the detection unit, stored in the angle information storage unit via the control unit, and stored in the angle information storage unit by the return button operation of the operator. An X-ray fluoroscopic apparatus , comprising: a computer that returns the holding device to a state of an angle past the current stop angle based on the angle information .

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