JP2015229096A - Radiographic x-ray equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide radiographic X-ray equipment, even when acquiring an X-ray image of an ankle of a subject in a standing state, capable of disposing a center of an X-ray detection part at a position corresponding to the ankle as a region of interest and allowing a subject to easily get on/off a footstool.SOLUTION: The radiographic X-ray equipment includes: an X-ray imaging system that has a top plate standing on a floor surface, with a subject placed thereon, an X-ray generation part for applying an X-ray towards the subject on the top plate, and an X-ray detection part disposed facing the X-ray generation part for detecting the X-ray transmitting through the subject, and that moves in the longitudinal direction of the top plate; an X-ray image processing part that performs image processing of an X-ray signal output from the X-ray detection part and generates an X-ray image; a display part that displays the X-ray image generated by the X-ray image processing part; and a footstool that is disposed on the top plate and slidingly moves in the longitudinal direction of the footstool.

Description

  The present invention relates to a platform moving mechanism in an X-ray fluoroscopic apparatus having a platform used when a subject rides on a top board.

  The X-ray fluoroscopic imaging apparatus rotates the top plate surface of the X-ray fluoroscopic imaging apparatus on which the subject is placed so as to have a predetermined inclination with respect to the floor surface. X-ray images are acquired at reverse tilt. When the subject is placed on the top plate, the top plate is erected so that the top plate surface is perpendicular to the floor surface, and the subject is placed on the platform installed at the end of the standing top plate. Put on the top board as a foothold. When an X-ray image of the ankle of a subject in a standing position is to be acquired, the lower end of the top plate standing up an X-ray imaging system consisting of an X-ray generation unit and an X-ray detection unit arranged correspondingly To move.

  Patent Document 1 describes a top plate that can be moved up and down having a step at the end, and an X-ray fluoroscopic table on which the X-ray imaging system can move in the longitudinal direction of the table.

Japanese Patent Laid-Open No. 11-347028

  Even when the X-ray detection unit is moved to a position corresponding to the ankle of the subject on the platform, the X-ray detection unit moves within the support frame that supports the top plate. The position corresponding to the ankle is not the center of the X-ray detector, which is the optimum position when acquiring the X-ray image, but the end of the X-ray detector. In order for the ankle to be in a position corresponding to the center of the X-ray detection unit, it is necessary to attach the mounting position of the platform to the position inside the top plate end. However, in this case, since the height from the floor surface to the platform with the top standing up is increased, it is difficult to get on and off the subject.

  Therefore, an object of the present invention is an X-ray fluoroscopic imaging apparatus in which the subject can easily get on and off the platform and the center of the X-ray detection unit can be arranged at a position corresponding to the ankle of the subject in the standing state. Is to provide.

  In order to solve the above-described problems, the present invention is configured as follows.

  A top plate that stands with respect to the floor with the subject placed thereon, an X-ray generator that irradiates the subject on the top with X-rays, and an X-ray that is disposed opposite to the X-ray generator and is transmitted through the subject An X-ray imaging system that has an X-ray detection unit that detects the line and moves in the longitudinal direction of the top plate, and an X-ray signal output from the X-ray detection unit performs image processing to generate an X-ray image An X-ray image processing unit, a display unit that displays an X-ray image generated by the X-ray image processing unit, and a platform that is arranged on the top and slides in the longitudinal direction of the top.

  According to the present invention, there is provided an X-ray fluoroscopic imaging apparatus in which the subject can easily get on and off the platform and the center of the X-ray detection unit can be arranged at a position corresponding to the ankle of the subject in a standing position. It is to be.

An example of the whole block diagram of the X-ray fluoroscopic imaging apparatus of this invention. The figure which shows the X-ray fluoroscopic imaging apparatus of this invention in a state whose top plate stood up. The figure for demonstrating the platform of this invention. The figure for demonstrating the grip rod of this invention. The figure explaining the positional relationship of the platform of this invention and an X-ray imaging system.

  The X-ray fluoroscopic apparatus of the present invention will be described below with reference to the accompanying drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiments of the invention, and the repetitive description thereof is omitted.

  FIG. 1 is a diagram showing an example of an overall configuration diagram of the X-ray fluoroscopic apparatus 1 of the present invention.

  The X-ray fluoroscopic imaging apparatus 1 of the present invention includes a top plate 102 on which a subject 101 is disposed, an X-ray generation unit 103 that irradiates the subject 101 with X-rays, and an X-ray generation unit 103 that is opposed to the subject. An X-ray detection unit 104 that detects X-rays that have passed through 101, an X-ray diaphragm device 105 that sets an X-ray irradiation area for the subject 101, a column 106 that supports the X-ray generation unit 103, and a column 106 are Supporting the column moving mechanism 107 that moves in the short direction of the plate 102, the top plate 102 and the column moving mechanism 107, and the table 102 and the column moving mechanism 107 can be moved in the longitudinal direction of the table 102. Supporting frame 108, connecting portion 109 supporting the supporting frame 108, supporting the connecting portion 109, and moving the connecting portion 109 in the vertical direction with respect to the floor surface and in the rotation direction about the axis parallel to the floor surface Power supply to the connecting unit moving mechanism unit 110, the stand unit 111 installed on the floor and supporting the connecting unit moving mechanism unit 110, and the X-ray generation unit 103. An X-ray image processing unit 113 that performs image processing on the X-ray signal output from the high voltage generation unit 112 and the X-ray detection unit 104 and generates an X-ray image, and an X-ray image processing unit 113 A display unit 114 that displays the generated X-ray image, an external storage unit 115 that stores the X-ray image generated by the X-ray image processing unit 113, a control unit 116 that controls each of the above components, and a control unit And an operation unit 117 that issues a command to 116.

  The top plate 102 is provided with a step 118 for use when the subject 101 gets on and off the top plate 102 and a gripping rod 119 that supports the subject 101 when the subject 101 grips it. The rod 119 is further provided with a fixing belt 120 for preventing the subject 101 from falling from the top plate 102.

  The X-ray generation unit 103 has an X-ray tube that receives power supply from the high voltage generation unit 112 and generates X-rays. Further, the X-ray generation unit 103 may include an X-ray filter that selectively transmits X-rays having specific energy.

  The X-ray detection unit 104 is configured by, for example, a plurality of detection elements that detect X-rays arranged in a two-dimensional array, and is incident from the X-rays irradiated from the X-ray generation unit 103 and transmitted through the subject. X-ray signal corresponding to the amount is detected.

  The X-ray aperture device 105 has a plurality of movable restriction blades that shield X-rays generated from the X-ray generation unit 103, and each of the plurality of movable restriction blades (not shown in particular) is moved so that X-rays on the subject 101 Determine the irradiation area.

  The connecting part moving mechanism part 110 erects the top plate 102 by rotating the connecting part 109. FIG. 2 shows the X-ray fluoroscopic imaging apparatus 1 in a state where the top plate 102 is upright. As shown in FIG. 2, when the top plate 102 rises by the connecting portion moving mechanism 110, the X-ray generation unit 103 also moves to face the surface of the top plate 102.

  The X-ray image processing unit 113 performs image processing on the X-ray signal output from the X-ray detection unit 104, and outputs an X-ray image subjected to image processing. Image processing includes gamma conversion, gradation conversion processing, image enlargement / reduction, and the like.

  In addition to displaying the X-ray image generated by the X-ray image processing unit 113, the display unit 115 displays an X-ray image stored in the external storage unit 115, conditions for irradiating X-rays, and the like.

  The external storage unit 115 is configured using a hard disk, a memory, or the like.

  Next, the step 118, which is one of the features of the present invention, will be described in detail with reference to FIG.

  The platform 118 of the present invention includes a fixed guide portion 301 fixed to an end portion in the longitudinal direction of the top plate 102, and a drive guide portion 302 that slides and moves on the guide portion 301 that extends in the longitudinal direction of the top plate 102. A feed screw 304 that moves the drive guide portion 302 by being engaged with the drive guide portion 302 and rotated by the directly connected motor 303; a coupling metal fitting 305 connected to the end of the drive guide portion 302; And a tread board 306 installed on the guide portion 302.

  The tread plate 306 is fixed to the drive guide portion 302 by nuts 307 and nuts 308 provided on the drive guide portion 302 and bolts 309 and bolts 310 provided on the tread plate 306. The nut 307 and the bolt 309 are connected in a direction that is horizontal to the top plate 102 and perpendicular to the longitudinal direction of the top plate 102, and the nut 308 and the bolt 310 are connected in a direction perpendicular to the top plate 102 surface. .

  The tread board 306 is connected to the drive guide section 302 by nuts and bolts from different directions, so that even when the subject 101 is placed on the tread board 306 and the top board 102 is tilted, the tread board 306 and The possibility that the joint portion of the drive guide portion 302 is loosened is reduced. In addition, since the tread plate 306 can be detached from the top plate 102 because the nut and the bolt are joined. In this way, the tread plate 306 joined to the drive guide portion 302 is configured to move in the longitudinal direction of the top plate 102 by the motor 303.

  In the above description, the driving mechanism for the tread plate 306 using the feed screw 304 has been described, but the present invention is not limited to this. For example, a rack and pinion, a chain, or a belt drive may be used. In addition, when the surface of the tread 306 is raised by being configured so that the position of the surface of the tread 306 on which the subject 101 gets on and off is separated from the joint position of the tread 306 and the driving guide 302 in the longitudinal direction of the top plate 102. It is possible to bring the subject 101 closer to the floor surface from the end of the top plate 102, so that the subject 101 can easily get on and off the tread plate 306.

  Next, the grip bar 119 will be described with reference to FIG.

  The grip rod 119 is connected to an end portion different from the end portion connected to the drive guide portion 302 of the coupling fitting 305. Further, the grip bar 119 extends in the longitudinal direction of the top plate 102 from the end connected to the coupling metal 305, and the end different from the end connected to the coupling metal 305 is curved, It is connected to a guide rail 402 provided on the side surface 401. The guide rail 402 extends in the longitudinal direction of the top plate 102.

  The grasping rod 119 is configured to move in the same direction as the tread 306 in the longitudinal direction of the top plate 102, and the end of the grasping rod 119 is supported by the guide rail 402 when moving. , Stable movement without blurring is possible. Further, the gripping rod 119 is provided with a hole 403 through which the fixing belt 120 is passed. The fixing belt 120 is fixed to the grip rod 119 by passing through the holes 403 of the grip rod 119 provided at both ends in the short direction of the top plate 102.

  Next, the movement operation of the tread board 306 and the X-ray imaging system 501 having the X-ray generation unit 103 and the X-ray detection unit 104 of the present invention will be described with reference to FIGS.

  FIGS. 5 (a) and 5 (b) show an X-ray imaging system 501 and a tread board when an X-ray image of the ankle 502 of the subject 101 in the standing position is acquired using the X-ray fluoroscopic imaging apparatus 1 of the present invention. FIG. 10 is a diagram showing a positional relationship associated with the movement operation of 306. FIG. 5 (a) shows a state of the X-ray fluoroscopic imaging apparatus 1 in which the step board 118 is moved to the end of the top board 102 that is close to the floor surface with the top board 102 raised. .

  First, the operator uses the operation unit 117 to raise the top plate 102 and move it to the end of the top plate 102 of the platform 118. When the operator confirms that the subject 101 has been placed on the platform 118, the X-ray imaging conditions for obtaining an X-ray image of the ankle 502 in the standing state using the operation unit 117 are set next. Input to the shooting condition setting unit 503. An interlocking movement control unit 504 provided in the control unit 116 is connected to the X-ray imaging system 501 so as to have a predetermined relative positional relationship based on the X-ray imaging conditions input to the X-ray imaging condition setting unit 503. The step 118 is moved.

  Specifically, the X-ray imaging system 501 is moved to the end of the top plate 102 that is the limit of movement, and the platform 118 is raised toward the center of the top plate 102 on the contrary. The relative positional relationship between the X-ray imaging system 501 and the platform 118 is such that the ankle 502 of the subject 101 placed on the platform 118 substantially corresponds to the center of the X-ray detector 104, as shown in FIG. The X-ray incident perpendicularly to the center of the X-ray detection unit 104 from the X-ray generation unit 103 passes through the ankle 502 of the subject 101. .

  As described above, the X-ray image acquired using the X-ray incident from the X-ray generation unit 103 to the X-ray detection surface of the X-ray detection unit 104 substantially perpendicularly is detected from the X-ray generation unit 103. The X-ray image obtained by using the X-ray incident obliquely with respect to the X-ray detection surface of the unit 104 becomes a more preferable X-ray image with less distortion than the X-ray image acquired.

  As described above, the X-ray fluoroscopic imaging apparatus 1 of the present invention has the subject 101, the top plate 102 standing on the floor surface, the X-ray generation unit 103, and the X-ray detection unit 104, Since it has an X-ray imaging system 501 that slides and moves in the longitudinal direction of the plate 102 and a platform 118 on which the subject 101 gets on and off and moves in the longitudinal direction of the top plate 102, the platform of the subject 101 118 is easy to get on and off, and the relative positional relationship between the X-ray imaging system 501 and the platform 118 is determined by the subject 101 on the platform 118 even when the ankle 502 of the subject 101 is imaged in the standing position. The X-ray image of the ankle 502, which is the region of interest, can be acquired using the center of the X-ray detection unit 104 because the center of the X-ray detection unit 104 can be moved to a position corresponding to the ankle 502 can do.

  In addition, as the platform 118 moves, the grip bar 119 gripped by the subject 101 on the top plate 102 slides in the same direction in conjunction with the platform 118, so that the subject 101 on the platform 118 starts to move. Even if it does, it can support itself, without changing the position which grasps the grip stick 119.

  Further, since the fixing belt 120 is installed on the gripping rod 119 that moves in conjunction with the movement of the step 118, there is no possibility that the subject 101 falls from the top plate 102 while the step 118 is moving.

  Further, an X-ray imaging condition setting unit 503 for an operator to input desired X-ray imaging conditions, and an X-ray imaging system 501 based on the X-ray imaging conditions input to the X-ray imaging condition setting unit 503 Since the X-ray imaging system 501 and the interlocking movement control unit 504 that moves the platform 118 so that the relative positional relationship with the platform 118 becomes a predetermined position, the operator is required to perform the X-ray each time. There is no need to individually adjust the positions of the imaging system 501 and the platform 118.

  The present invention is not limited to this, and the positions of the X-ray imaging system 501 and the platform 118 can be individually set, and the X-ray imaging system 501 and the platform 118 are separated by the interlocking movement control unit 504. Each position can be finely adjusted after being moved. As a result, the X-ray imaging system 501 and the platform 118 can be moved to the optimum positions according to the characteristics of each subject.

  1 X-ray fluoroscope, 101 Subject, 102 Top plate, 103 X-ray generator, 104 X-ray detector, 105 X-ray diaphragm, 106 strut, 107 strut moving mechanism, 108 Support frame, 109 joint, 110 Coupling unit moving mechanism unit, 111 stand unit, 112 high voltage generation unit, 113 X-ray image processing unit, 114 display unit, 115 external storage unit, 116 control unit, 117 operation unit, 118 platform, 119 grip rod, 120 fixed Belt, 301 Fixed guide, 302 Drive guide, 303 Motor, 304 Feed screw, 305 Connecting bracket, 306 Tread, 307, 308 Nut, 309, 310 Bolt, 401 Side, 402 Guide rail, 403 Hole, 501 X-ray Imaging system, 502 ankle, 503 X-ray imaging condition setting unit, 504 linked movement control unit

Claims (4)

A top plate that stands with respect to the floor with the subject placed thereon, an X-ray generation unit that irradiates the subject on the top plate with X-rays, and is placed opposite to the X-ray generation unit and passes through the subject An X-ray imaging system having an X-ray detection unit for detecting X-rays and moving in the longitudinal direction of the top plate, and an X-ray image output by performing image processing on the X-ray signal output from the X-ray detection unit An X-ray image processing unit that performs generation, a display unit that displays an X-ray image generated by the X-ray image processing unit, and a platform that is disposed on the top plate and slides in the longitudinal direction of the top plate. An X-ray fluoroscopic apparatus characterized by comprising: The X-ray fluoroscopic imaging apparatus according to claim 1, further comprising: a grip bar that is disposed on the top plate and slides in the same direction in conjunction with the movement of the platform. The X-ray fluoroscopic imaging apparatus according to claim 2, further comprising a fixing belt installed on the grip rod. Based on the X-ray imaging condition setting unit for inputting X-ray imaging conditions and the X-ray imaging conditions input to the X-ray imaging condition setting unit, the relative positions of the X-ray imaging system and the platform are determined in advance. An X-ray fluoroscopic apparatus according to any one of claims 1 to 3, further comprising an interlocking movement control unit configured to move to a predetermined position.

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