JP4998531B2 - X-ray equipment - Google Patents

Description

  The present invention relates to an X-ray imaging apparatus that obtains a fluoroscopic image of a subject, and more particularly to an operation for driving an X-ray irradiator.

  Conventionally, an X-ray imaging apparatus includes an X-ray irradiator that irradiates X-rays, a top plate on which the subject is placed, and an X-ray flat panel detector that detects X-rays transmitted through the subject. Zoom adjustment of X-ray imaging is performed by moving the X-ray irradiator closer to or away from the top board.

  Further, as disclosed in Patent Document 1, there is an X-ray imaging apparatus capable of moving a top plate upside down. The top plate, the X-ray irradiator, and the X-ray flat panel detector can be moved up and down integrally. The photographer can set the top plate, the X-ray irradiator, and the X-ray flat detector to either the horizontal position or the standing position before taking a fluoroscopic image of the subject. The positioning of the X-ray irradiator, the top plate, and the X-ray flat panel detector in the X-ray imaging apparatus of Patent Document 1 is operated from an operation panel provided on an imaging instruction stand installed at a location away from the top plate. The imaging instruction stand is equipped with a monitor so that a photographer can see a fluoroscopic image taken by X-ray.

  In addition to the operation panel provided on the imaging instruction stand, an irradiator operation panel 73 for operating the positioning of the X-ray irradiator 71 is also provided on the arm 72 that supports the X-ray irradiator 71 as shown in FIG. There is also an X-ray imaging apparatus. As shown in FIG. 17, the irradiator operation panel 73 has an operation switch 75, 76 that moves the X-ray irradiator 71 and the X-ray flat panel detector in parallel with the longitudinal direction of the top plate 74, and the top plate 74. Operation switches 77 to 79 that rotate only the X-ray irradiator 71 are provided. Each of the operation switches 75 to 79 illustrates a relative position between the X-ray irradiator 71 and the top plate 74. The irradiator operation panel 73 is provided on the top plate 74 side of the arm 72. The photographer can position the X-ray irradiator 71 while talking to the subject M in the immediate vicinity of the subject M.

JP 2006-255282 A

  However, since the irradiator operation panel 73 is provided on the top plate 74 side of the arm 72, the visibility of the irradiator operation panel 73 is poor for the photographer. When the top 74 is in the horizontal position, the irradiator operation panel 73 is positioned between the subject M and the arm 72, so the photographer must cross between the X-ray irradiator 71 and the subject M. Cannot be operated. Further, when the subject M is placed in contact with the top plate 74, the photographer approaches the irradiator operation panel 73 provided on the top plate 74 side of the arm 73 even when the top plate 74 is standing. Hateful. Further, since the operation switches 75 to 79 of the irradiator operation panel 73 illustrate the relative positions of the X-ray irradiator 71 and the top plate 74, the photographer can use the top plate 74 before moving or rotating. In addition, the positional relationship between the X-ray irradiator 71 and the positional relationship between the top plate 74 and the X-ray irradiator 71 after movement or rotation must be considered, and the operation is not intuitive.

  Furthermore, since the X-ray irradiator 71 rotates with respect to the support arm 73, in the X-ray imaging apparatus in which the top plate 74 and the X-ray irradiator 71 rotate, the top plate 74 and the X-ray irradiator 71 rotate. Therefore, it is difficult to intuitively show the driving direction of the operation panel 73 to the photographer.

  The present invention has been made in view of such circumstances, and an X-ray equipped with an operation panel for moving or rotating an X-ray irradiator that is easy for a photographer to find, approach, and operate. An object is to provide a photographing apparatus.

In order to achieve such an object, the present invention has the following configuration.
That is, the invention described in claim 1 is an X-ray irradiator that irradiates X-rays, a top plate on which the subject is placed, an X-ray flat panel detector that detects X-rays transmitted through the subject, A support arm that supports the X-ray irradiator and the X-ray flat detector facing each other and is extendable and contractable so that the X-ray irradiator and the X-ray flat detector approach or separate from each other; and the top plate And a support drive unit that drives the X-ray irradiator in a telescopic direction and a longitudinal direction of the top plate. An arm driving unit, an irradiator angle detector for detecting an angle of the X-ray irradiator, a top plate angle detector for detecting an angle of the top plate, and a side portion of the X-ray irradiator, An operation provided with an instruction switch for each rotation direction of the X-ray irradiator and driving direction of the support arm. A panel, a first storage unit that stores information of a driving direction corresponding to the instruction switch with respect to an angle of the X-ray irradiator and an angle of the top plate, and the irradiator driving unit or the support from the instruction switch And a driving direction control unit that switches a driving instruction output to the arm driving unit based on an angle of the X-ray irradiator and information in the first storage unit.

  According to the first aspect of the present invention, the subject is irradiated with X-rays from the X-ray irradiator, and the X-ray transmitted through the subject is detected by the X-ray flat detector. The X-ray irradiator and the X-ray flat panel detector are supported so as to face the support arms, respectively, and the support arm can be expanded and contracted, so that the X-ray irradiator and the X-ray flat panel detector can approach or separate from each other. The X-ray irradiator is rotationally driven by an irradiator driving unit. The top plate on which the subject is placed is moved up and down by the up / down drive unit together with the support arm. The support arm is driven in the expansion / contraction direction by the support arm driving unit, and is also driven in the longitudinal direction of the top plate. The angle of the X-ray irradiator is detected by an irradiator angle detector, and the angle of the top plate is detected by a top plate angle detector.

  On the side of the X-ray irradiator, there is provided an operation panel provided with an instruction switch according to the rotation direction of the X-ray irradiator and the drive direction of the support arm. The first storage unit stores information on the driving direction corresponding to the instruction switch with respect to the angle of the X-ray irradiator and the angle of the top plate. A drive instruction is output from the instruction switch to the irradiator drive unit or the support arm drive unit. The drive direction control unit switches the drive instruction based on the angle of the X-ray irradiator and information stored in the first storage unit.

  Based on the rotation angle of the top plate and the X-ray irradiator and the information stored in the first storage unit, the drive direction control unit switches the drive command output from the command switch, so the drive direction and command indicated by the command switch Deviation from the drive direction of the drive instruction output from the switch can be eliminated. That is, the drive direction indicated by the instruction switch and the drive direction of the drive instruction output from the instruction switch can be matched.

  Moreover, since the operation panel is provided in the side part of the X-ray irradiator, the visibility of the operator is good. The operator can operate the operation panel without being obstructed by anything, and is easily accessible. Even if the top is in a horizontal position, it can be operated without difficulty. Further, since the drive direction indicated by the instruction switch and the drive direction of the drive instruction output from the instruction switch are the same regardless of the angle of the top plate or the angle of the X-ray irradiator, the photographer can intuitively use the X-ray irradiator. In addition, the support arm can be driven.

  Further, in the present invention, the drive direction control unit is configured to control the irradiator drive unit or the support from the instruction switch based on the angle of the X-ray irradiator, the angle of the top plate, and information of the first storage unit. It is desirable to switch or stop the drive instruction output to the arm drive unit.

  According to the above configuration, the drive direction control unit is output from the instruction switch to the irradiator drive unit or the support arm drive unit based on the angle of the X-ray irradiator, the angle of the top plate, and the information in the first storage unit. Switch or stop drive instructions. Since the drive direction control unit can not only switch the drive instruction output from the instruction switch but also stop it, the drive by the instruction switch can be limited by the angles of the X-ray irradiator and the top plate.

  Further, in the present invention, the distance detector for detecting the distance between the X-ray irradiator and the X-ray flat panel detector, and the indication switch corresponding to the angle of the X-ray irradiator and the angle of the top plate A second storage unit that stores lighting information to be performed, and an indication switch in a direction in which the X-ray irradiator and the support arm can be driven are set to the angle of the X-ray irradiator, the angle of the top plate, the distance, and the lighting. It is desirable to provide a switch lighting control unit that lights based on the information.

  According to the above configuration, the distance detector detects the distance between the X-ray irradiator and the X-ray flat panel detector. The second storage unit stores lighting information corresponding to the instruction switch with respect to the angle of the X-ray irradiator and the angle of the top plate. Based on the angle of the X-ray irradiator and the top plate, the distance between the X-ray irradiator and the X-ray flat panel detector, and the lighting information, the switch lighting control unit determines whether the X-ray irradiator and the support arm can be driven. Turn on the indicator switch. Thus, the operator can know the directions in which the X-ray irradiator and the support arm can be driven, and can operate more intuitively.

  Further, in the present invention, an X-ray tube that generates X-rays and a collimator that narrows the X-rays generated from the X-ray tube, and the side of the operation panel opposite to the support arm of the collimator are provided. It is desirable to provide in. Thus, since the operation panel is provided on the side opposite to the support arm of the collimator, the photographer can immediately find the operation panel. Moreover, even if the top plate is in a horizontal position, it can be operated without difficulty.

  In the present invention, it is preferable that an arrow indicating a driving direction is marked on the instruction switch. As a result, since the arrow indicating the driving direction is marked on the instruction switch, the photographer can intuitively rotate the X-ray irradiator and move the support arm. The burden on the photographer can be further reduced, and the X-ray imaging time can be shortened.

  In the present invention, it is preferable that the instruction switch indicating the direction in which the X-ray irradiator rotates is blinked while the irradiator driving unit rotationally drives the X-ray irradiator. As a result, while the X-ray irradiator is being rotated by the irradiator drive unit, the instruction switch indicating the direction in which the X-ray irradiator rotates is lit and lit, so that the X-ray irradiator is rotating for the photographer. I can let you know.

  According to the X-ray imaging apparatus of the present invention, based on the rotation angle of the top plate and the X-ray irradiator and the information stored in the first storage unit, the driving direction control unit outputs the driving instruction from the instruction switch. Therefore, the deviation between the drive direction indicated by the instruction switch and the drive direction of the drive instruction output from the instruction switch can be eliminated. That is, the drive direction indicated by the instruction switch and the drive direction of the drive instruction output from the instruction switch can be matched.

  Moreover, since the operation panel is provided in the side part of the X-ray irradiator, the visibility of the operator is good. The operator can operate the operation panel without being obstructed by anything, and is easily accessible. Even if the top is in a horizontal position, it can be operated without difficulty. Further, since the drive direction indicated by the instruction switch and the drive direction of the drive instruction output from the instruction switch are the same regardless of the angle of the top plate or the angle of the X-ray irradiator, the photographer can intuitively use the X-ray irradiator. In addition, the support arm can be driven.

It is a block diagram which shows the whole structure of the X-ray imaging apparatus which concerns on an Example. It is a front view of the proximity operation panel which concerns on an Example. It is a block diagram which shows control of the irradiation device operation panel which concerns on an Example. It is the drive direction table with which the drive direction control part which concerns on an Example is equipped. It is the lighting table with which the switch lighting control part which concerns on an Example is equipped. The top plate which concerns on an Example is a side view of standing position. It is a front view of the irradiator operation panel with the top plate according to the embodiment standing. The top plate which concerns on an Example is a side view of standing position. It is a front view of the irradiator operation panel with the top plate according to the embodiment standing. The top plate which concerns on an Example is a side view of standing position. It is a front view of the irradiator operation panel with the top plate according to the embodiment standing. The top plate which concerns on an Example is a side view of standing position. It is a front view of the irradiator operation panel with the top plate according to the embodiment standing. The top plate which concerns on an Example is a side view of standing position. It is a front view of the irradiator operation panel with the top plate according to the embodiment standing. It is a periphery perspective view of the X-ray irradiator of the X-ray imaging apparatus which concerns on a prior art example. It is a front view of the irradiator operation panel which concerns on a prior art example.

Embodiments of the present invention will be described below with reference to the drawings.
1 is a block diagram showing the overall configuration of the X-ray imaging apparatus, FIG. 2 is a front view of the proximity operation panel, FIG. 3 is a block diagram showing control of the irradiator operation panel, and FIG. 4 is a driving direction. FIG. 5 is a lighting table provided in the switch lighting control unit.

<X-ray equipment>
As shown in FIG. 1, an X-ray imaging apparatus 1 includes an X-ray irradiation that irradiates an X-ray onto a top plate 2 on which a subject M as an examination target is placed, and an object M placed on the top plate 2. The X-ray flat panel detector (hereinafter referred to as FPD) 4 disposed opposite to the X-ray irradiator 3 with the top 3 sandwiched between the X-ray irradiator 3 and the FPD 4 And a support arm 5 for supporting each. The support arm 5 is supported by the top plate 2 and is movable in the longitudinal direction of the top plate 2. The X-ray irradiator 3 and the FPD 4 can move in pairs in the longitudinal direction of the top plate 2 as the support arm 5 moves. Further, the support arm 5 can be expanded and contracted, and the X-ray irradiator 3 can be moved closer to or away from the FPD 4. The top plate 2 is rotatably supported by the support 9.

  The X-ray irradiator 3 can be rotated every 90 degrees around the focal point f of X-rays. The X-ray irradiator 3 is provided on the side opposite to the X-ray tube 6 that generates X-rays, the collimator 7 that narrows the generated X-rays, and the support arm 5 of the collimator 7. And an irradiator operation panel 8 for operating the rotation of the X-ray irradiator 3.

  In the embodiment, the FPD 4 employs a direct conversion flat sensor using an X-ray sensitive semiconductor. In addition, an indirect conversion flat sensor, an image intensifier, or a film cassette may be employed. The FPD 4 detects X-rays that have passed through the subject M.

  In addition, the X-ray imaging apparatus 1 controls the imaging system of the X-ray fluoroscopic image formed by the image processing unit 10 that configures the X-ray fluoroscopic image based on the X-ray detection signal output from the FPD 4 and the image processing unit 10. A monitor 12 that is projected via the unit 11, an operation unit 13 that allows the photographer to input and set various imaging conditions, and an X-ray irradiation control unit 14 that controls the tube voltage and tube current output to the X-ray tube 6. Prepare. The operation unit 13 includes a keyboard, a mouse, and a joystick.

  The X-ray imaging apparatus 1 also includes a tilting drive unit 15 that tilts the top plate 2 and the support arm 5 together, and a top plate that moves the top plate 2 in the longitudinal direction, the short side direction, and the vertical direction. A drive unit 16, a support arm drive unit 17 that moves the support arm 5 in the telescopic direction and the longitudinal direction of the top plate 2, and a surface that is perpendicular to the top plate 2 in the longitudinal direction of the top plate 2 around the focal point f of X-rays The X-ray irradiator 3 is swung, that is, provided with an irradiator driving unit 18 that rotates the X-ray irradiator 3.

  The raising / lowering drive unit 15, the top plate drive unit 16, and the support arm drive unit 17 are each composed of a rack, a pinion, and a motor. The irradiator driving unit 18 is composed of a motor. The moving / rotating amount of each of the tilting drive unit 15, the top plate drive unit 16, the support arm drive unit 17, and the irradiator drive unit 18 is controlled by the imaging system control unit 11 based on the input operation of the operation unit 13. Is done.

  In addition, the X-ray imaging apparatus 1 includes a proximity operation panel 19 on the side of the top 2 opposite to the support arm 5. The proximity operation panel 19 can actuate the tilting drive unit 15, the top plate drive unit 16 and the support arm drive unit 17 separately from the operation unit 13.

  The X-ray imaging apparatus 1 includes a top plate angle detector 21 that detects the angle of the top plate 2, an irradiator angle detector 22 that detects an angle of the X-ray irradiator 3 with respect to the support arm 5, and X-ray irradiation. And a drive direction control unit 23 that switches the drive direction of the operation signal from the irradiator operation panel 8 depending on the angle of the table 3 and the X-ray irradiator 3. The top plate angle detector 21 and the irradiator angle detector 22 are composed of potentiometers. The irradiator operation panel 8 corresponds to the operation panel in the present invention, and the operation signal corresponds to a drive instruction in the present invention.

  Further, the X-ray imaging apparatus 1 includes a distance detector 24 that detects the distance between the X-ray irradiator 3 and the FPD 4, a distance detection signal detected by the distance detector 24, and the top plate 2 from the top angle detector 21. A switch lighting control unit 26 for controlling lighting of each operation switch provided on the irradiator operation panel 8 based on the angle detection signal of the X-ray irradiator 3 and the angle detection signal of the X-ray irradiator 3 from the irradiator angle detector 22. Is provided. The image processing unit 10, the imaging system control unit 11, the X-ray irradiation control unit 14, the drive direction control unit 23, and the switch lighting control unit 26 include a CPU.

<Proximity control panel>
A proximity operation panel 19 as shown in FIG. 2 is provided on the side of the top plate 2. The operation switch 31 arranged on the left side of the proximity operation panel 19 is a switch for rotating the top plate 2 from the standing position to the horizontal position only while being pressed. The operation switch 32 arranged on the right side of the operation switch 31 is a switch for rotating the top plate 2 from the horizontal position to the standing position only while being pressed. When the operation switch 31 and the operation switch 32 are pressed, the raising / lowering drive unit 15 is actuated so that the top plate 2 and the support arm 5 are raised and lowered.

  Thus, the top plate 2 can be rotated from 0 degree which is a horizontal position to 90 degrees which is a standing position. Moreover, let the ceiling side of the top plate 2 in a standing position be the top plate head direction, and let the floor side of the top plate 2 be the top plate foot direction. Further, the top direction of the subject M is the head direction of the subject M, and the subject M when the subject M is placed on the top 2 with the head facing the top direction of the top and the back is the left-right direction of the subject M Are the left and right directions of the subject M, respectively.

  The operation switch 33 provided on the upper right side of the operation switch 32 is a switch for moving the left side of the subject M on which the top 2 is placed only while being pressed. The operation switch 34 provided at the lower right of the operation switch 32 is a switch that moves the table 2 in the right direction of the subject M on which the tabletop 2 is placed only while being pressed. When the operation switch 33 and the operation switch 34 are pressed, the top plate driving unit 16 is activated and the top plate 2 is moved in the short direction.

  An operation switch 35 provided on the right side of the operation switch 33 and the operation switch 34 is a switch for moving the support arm 5 in the direction of the top plate head only while being pressed. An operation switch 36 provided on the right side of the operation switch 35 is a switch for moving the support arm 5 in the direction of the top plate foot only while being pressed. When the operation switch 35 and the operation switch 36 are pressed, the support arm drive unit 17 is activated and the support arm 5 is moved in the longitudinal direction of the top plate 2.

  The operation switch 37 provided on the upper right side of the operation switch 36 is a switch for moving the top plate 2 in the ceiling direction of the support column 9 only while being pressed. The operation switch 38 provided at the lower right of the operation switch 36 is a switch that moves the top 2 in the direction of the floor of the column 9 only while being pressed. When the operation switch 37 and the operation switch 38 are pressed, the top plate driving unit 16 is operated and the top plate 2 is moved in the vertical direction.

<X-ray irradiator>
As shown in FIG. 3, the irradiator operation panel 8 provided in the X-ray irradiator 3 includes a mark 41 simulating the X-ray irradiator 3 at the center, and operation switches indicating respective directions of the upper, lower, left and right around the mark 41 42 to 45 and operation switches 46 and 47 indicating the rotation direction of the X-ray irradiator 3 are provided. The direction in which the skirt 41 a of the mark 41 spreads indicates the direction of the X-ray irradiation port 7 a of the collimator 7. The operation switches 42 to 47 are marked with an arrow indicating the direction in which the X-ray irradiator 3 is operated. In addition, when each operation switch 42-47 arrange | positioned at the irradiation device operation panel 8 is lit, it is illustrated in white, and when each operation switch 42-47 is turned off, it is illustrated by hatching. The operation switches 42 to 47 correspond to instruction switches in the present invention.

  Next, the driving directions of the operation switches 42 to 47 when the top 2 is in the horizontal position as shown in FIG. 1 will be described with reference to FIG. The operation switch 42 arranged on the mark 41 is a switch for moving the X-ray irradiator 3 in a direction away from the top plate 2 in the vertical direction. That is, the X-ray irradiator 3 is driven in a direction away from the FPD 4. An operation switch 44 disposed below the mark 41, that is, on the skirt 41 a side so as to face the operation switch 42 is a switch for moving the X-ray irradiator 3 in a direction approaching the vertical direction with respect to the top 2. That is, the X-ray irradiator 3 is driven in a direction approaching the FPD 4.

  The operation switch 43 arranged to the left of the mark 41, that is, counterclockwise of the operation switch 42, drives the support arm 5 that integrally supports the X-ray irradiator 3 and the FPD 4 with respect to the table 2 in the direction of the table top. It is a switch to do. The operation switch 45 arranged to the right of the mark 41, that is, clockwise to the operation switch 42, is a switch for driving the support arm 5 in the direction of the top plate foot with respect to the top plate 2.

  When any one of the operation switches 42 to 45 is pressed, the support arm is driven via the drive direction control unit 23 that switches the drive direction corresponding to each operation switch 42 to 45 according to the angle of the top 2 and the X-ray irradiator 3. An operation signal is output to the unit 17, and the support arm driving unit 17 is operated to move or expand / contract the support arm 5.

  The operation switch 46 arranged at the lower left of the mark 41, that is, clockwise to the operation switch 44 is a switch for rotating the X-ray irradiator 3 clockwise around the X-ray focal point f, that is, clockwise. Further, the operation switch 47 arranged at the lower right of the mark 41, that is, counterclockwise of the operation switch 44, rotates the X-ray irradiator 3 counterclockwise around the X-ray focal point f, that is, counterclockwise. Switch. In the embodiment, the counterclockwise direction is a positive direction and the clockwise direction is a negative direction. When the operation switch 46 or the operation switch 47 is pressed once, the irradiator drive unit 18 is operated via the drive direction control unit 23 to rotate the X-ray irradiator 3 in each direction every 90 degrees.

  The drive direction control unit 23 receives the operation signals from the storage unit 28 in which the drive direction table 51 shown in FIG. 4 is stored and the operation switches 42 to 47 of the irradiator operation panel 8 as the angle of the top 2 and the X-rays. A switching unit 27 that switches based on the angle of the irradiator 3 and the drive direction table 51 is provided. The switching unit 27 uses the top plate angle detection signal input from the top plate angle detector 21 and the irradiator angle detection signal input from the irradiator angle detector 22 to switch between the top plate 2 and the X-ray irradiator 3. Recognize angular state. Further, the switching unit 27 is input from the operation switches 42 to 47 of the irradiator operation panel 8 by referring to the drive direction table 51 and corresponding to the angle state of the top 2 and the X-ray irradiator 3. The driving direction of each operation signal is switched. The storage unit 28 is configured by a storage medium such as a ROM. The storage unit 28 corresponds to the first storage unit in the present invention.

  When the top plate 2 is in the horizontal position, a top plate angle detection signal whose top plate angle is 0 degree is input to the switching unit 27 from the top plate angle detector 21. Accordingly, the switching unit 27 assigns the horizontal driving direction of the driving direction table 51 as the driving direction of the operation switches 42 to 47 of the irradiator operation panel 8. When the top plate 2 is in the horizontal position, the driving directions of the operation switch 46 and the operation switch 47 are not assigned. That is, it is set so that the X-ray irradiator 3 cannot be rotationally driven when the top 2 is in the horizontal position. When an operation signal is input from the operation switches 46 and 47, the switching unit 27 stops the operation signal.

  The operation switches 42 to 47 arranged on the irradiator operation panel 8 incorporate LEDs. Each of the operation switches 42 to 47 is turned on when the X-ray irradiator 3 is in a direction in which the X-ray irradiator 3 can be moved or rotated by the switch lighting control unit 26, and is turned off when the direction is incapable of moving or rotating. Further, the operation switch 46 and the operation switch 47 are lit in a blinking manner while the X-ray irradiator 3 is rotating by the switch lighting control unit 26. Next, control of the distance detector 24 and the switch lighting control unit 26 will be described.

  The X-ray irradiator 3 can approach or separate from the FPD 4 by the expansion and contraction of the support arm 5. When the support arm 5 is contracted by the support arm drive unit 17, the X-ray irradiation device 3 moves to the top plate 2 side. When the X-ray irradiator 3 moves to a predetermined minimum distance from the FPD 4, the minimum limit switch 52 is activated and a minimum distance signal is output to the switch lighting control unit 26.

  Further, when the support arm 5 is extended by the support arm driving unit 17, the X-ray irradiation device 3 moves in a direction away from the top plate 2. When the X-ray irradiation device 3 is positioned at a predetermined maximum distance from the FPD 4, the maximum limit switch 53 is activated and a maximum distance signal is output to the switch lighting control unit 26. The distance detector 24 has a minimum limit switch 52 for detecting that the distance between the X-ray irradiator 3 and the FPD 4 is a predetermined minimum distance, and a distance between the X-ray irradiator 3 and the FPD 4 is predetermined. And a maximum limit switch 53 for detecting the maximum distance.

  The switch lighting control unit 26 includes a lighting setting unit 54 that sets lighting of the operation switches 42 to 47 of the irradiator operation panel 8 from the angle of the top 2 and the X-ray irradiator 3, and a minimum or The lighting correction part 55 which turns off the operation switches 42-45 of the drive direction which cannot be moved set to lighting by the maximum distance detection signal is provided, and the memory | storage part 57 which memorize | stores the lighting table 56 shown in FIG. The storage unit 57 is configured by a storage medium such as a ROM. The storage unit 57 corresponds to the second storage unit in the present invention.

  An irradiator angle detection signal is input from the irradiator angle detector 22 to the lighting setting unit 54. A top panel angle detection signal is input to the lighting setting unit 54 from the top panel angle detector 21. The lighting setting unit 54 sets lighting of the operation switches 42 to 47 of the irradiator operation panel 8 with reference to the lighting table 56 stored in the storage unit 57 based on the irradiator angle detection signal and the top plate angle detection signal. To do.

  Since the X-ray irradiator 3 cannot be rotationally driven when the top 2 is in the horizontal position, the operation switch 46 and the operation switch 47 are not turned on but are turned off. The lighting control signal set by the lighting setting unit 54 is input to the lighting correction unit 55.

  Based on the minimum or maximum distance signal input from the minimum limit switch 52 or the maximum limit switch 53, the lighting correction unit 55 sets the lighting control signals of the operation switches 42 to 45 in the directions that cannot be driven to be turned off.

  When the top plate 2 is in the horizontal position, the operation switch 44 is set to be turned off when the minimum distance signal is input. When the maximum distance signal is input, the operation switch 42 is set to be turned off. The LEDs of the operation switches 42 to 47 of the irradiator operation panel 8 are controlled to be turned on by a lighting control signal in which a part of the lighting control signal set to be turned on by the lighting setting unit 54 is turned off by the lighting correction unit. When the minimum or maximum distance signal is not input to the lighting correction unit 55, the LEDs of the operation switches 42 to 47 are controlled to be turned on as they are by the lighting control signal set by the lighting setting unit 54.

  As described above, when the minimum distance signal is input from the distance detector 24, the switch lighting control unit 26 turns off the operation switch 44 for operating the approach of the X-ray irradiator 3 to the FPD 4. When the maximum distance signal is input from the distance detector 24, the operation switch 42 for operating the X-ray irradiator 3 in the direction away from the FPD 4 is turned off.

  Next, referring to FIGS. 6 and 7, the photographer operates the operation unit 13 or the proximity operation panel 19 to move the top plate 2 to 90 together with the support arm 5 that supports the X-ray irradiator 3 and the FPD 4. The display of the irradiator operation panel 8 in the standing position rotated by a predetermined degree will be described. 6 is a side view when the top plate is standing and the rotation angle of the X-ray irradiator is 0 degree, and FIG. 7 is a side view when the top plate is standing and the rotation angle of the X-ray irradiator is 0 degree. It is a front view of an irradiator operation panel.

  As shown in FIG. 6, when the top plate 2 is in the standing position, the top plate angle detector 21 detects that the top plate is 90 degrees. Further, since the X-ray irradiator 3 rotates with the support arm 5, the X-ray irradiator 3 does not rotate with respect to the support arm 5. Thus, the irradiator angle detector 22 detects that the X-ray irradiator 3 remains at the 0 degree position.

  Based on the respective angle detection signals from the top plate angle detector 21 and the illuminator angle detector 22 and the drive direction table 51, the drive direction control unit 23 switches the operation signal from the irradiator operation panel 8. Since the angle of the top 2 is 90 degrees and the X-ray irradiator 3 is 0 degrees, the switching unit 27 refers to the drive direction table 51 and performs each operation of the irradiator operation panel 8. The operation direction of the switches 42 to 45 is controlled in the same way as when the top 2 is in the horizontal position.

  Further, when the top plate 2 is in a standing position and the angle of the X-ray irradiator 3 is 0 degree, an operation of rotating the X-ray irradiator 3 by 90 degrees is possible. That is, when the operation switch 47 is pressed, the switching unit 27 inputs an operation signal for rotating the X-ray irradiator 3 by 90 degrees to the irradiator driving unit 18. Accordingly, when the photographer presses the operation switches 42 to 45 and 47 of the irradiator operation panel 8, the X-ray irradiator 3 moves or rotates in the respective directions of the operation switches 42 to 45 and 47.

  The switch lighting control unit 26 is a switch for moving and rotating the X-ray irradiator 3 based on the angle detection signals from the top plate angle detector 21 and the illuminator angle detector 22 and the lighting table 56. The lighting of 42 to 47 is controlled. Since the X-ray irradiator 3 cannot be rotationally driven by the operation switch 46, the operation switch 46 is turned off as set in the lighting table 56.

  Further, in FIG. 6, the top plate 2 and the support arm 5 are in a standing position rotated 90 degrees, and the X-ray irradiator 3 is in a position closest to the top plate 2. The minimum limit switch 52 in the distance detector 24 detects that the distance between the X-ray irradiator 3 and the FPD 4 is the minimum (MIN) distance. A minimum distance signal is output from the minimum limit switch 52 to the switch lighting control unit 26, and based on this signal and the lighting table 56, the lighting correction unit 55 turns off the switch 44 that controls the X-ray irradiator 3 to approach the FPD 4. To do.

  Next, as shown in FIGS. 8 and 9, when the photographer presses the operation switch 42 of the operation panel 8 and the top plate 2 is in the standing position and the rotation angle of the X-ray irradiator 3 is 0 degree, X-ray irradiation is performed. A case where the device 3 is moved from the FPD 4 to the maximum (MAX) distance will be described. FIG. 8 is a side view when the top plate is standing and the rotation angle of the X-ray irradiator is 0 degree, and FIG. 9 is a side view when the top plate is standing and the rotation angle of the X-ray irradiator is 0 degree. It is a front view of an irradiator operation panel.

  The maximum limit switch 53 in the distance detector 24 detects that the distance between the X-ray irradiator 3 and the FPD 4 is the maximum (MAX) distance. A maximum distance signal is output from the maximum limit switch 53 to the lighting correction unit 55. Based on this signal and the lighting table 56, the lighting correction unit 55 operates the operation switch 42 for operating the X-ray irradiator 3 in a direction away from the FPD 4. Turns off. Accordingly, the photographer can see that the X-ray irradiation device 3 is at the maximum distance from the top plate 2. Further, the photographer knows that the operation switch 42 cannot be operated.

  Next, a case where the X-ray irradiator 3 is rotated 90 degrees with respect to the support arm 5 in the standing position where the top plate 2 is rotated 90 degrees together with the support arm 5 will be described with reference to FIGS. 10 and 11. Such a situation is when X-ray imaging is performed on the subject M laid down on the stretcher 58. FIG. 9 is a side view when the top plate is standing and the X-ray irradiator is rotated 90 degrees with respect to the support arm. FIG. 10 is a side view when the top plate is standing and the X-ray irradiator is on the support arm. It is a front view of the irradiator operation panel rotated 90 degrees with respect to it.

  When X-ray fluoroscopic imaging is performed with the subject M lying on the stretcher 58, the top plate 2 is placed in the standing position and the X-ray irradiator 3 is rotated 90 degrees with respect to the support arm 5. A film cassette 59 is inserted between the stretcher 58 and the subject M. A portable FPD may be used instead of the film cassette 59.

  With such an arrangement, the drive direction of the operation switches 42 to 45 of the irradiator operation panel 8 is different from the drive direction of the operation switches 42 to 45 of the irradiator operation panel 8 when the top 2 is in the horizontal position. For example, the operation switch 42 in which the top plate 2 is in the horizontal position indicates a direction away from the top plate 2. However, in the state where the top plate 2 is in the standing position and the X-ray irradiator 3 is rotated 90 degrees, the operation switch 42 points to the top plate head direction.

  The photographer is confused if the X-ray irradiator 3 moves in a direction away from the top 2 even though the photographer thinks that the head is in the direction of the top and presses the switch 42. Therefore, in this embodiment, each of the top plate angle detector 21 and the illuminator angle detector 22 is operated even when the switch 42 is pressed while the X-ray irradiator 3 is rotated 90 degrees while the top plate 2 is standing. From the angle detection signal, the switching unit 27 refers to the drive direction table 51 and switches the operation signal from the operation switch 42 to the operation signal in the direction away from the top plate. Since the switched operation signal is sent to the support arm drive unit 17, the support arm 5 is driven in the direction of the top of the head.

  Based on the respective angle detection signals from the top plate angle detector 21 and the illuminator angle detector 22 and the drive direction table 51, the drive direction control unit 23 switches the operation signal from the irradiator operation panel 8. Since the angle of the top 2 is 90 degrees and the X-ray irradiator 3 is 90 degrees, the drive direction control unit 23 refers to the drive direction table 51 and sets the irradiator operation panel 8. The operation direction of each of the operation switches 42 to 45 is controlled differently from when the angle of the X-ray irradiator 3 is 0 degree.

  When the top 2 is in a standing position and the angle of the X-ray irradiator 3 is 90 degrees, an operation of rotating the X-ray irradiator 3 by ± 90 degrees is possible. That is, when the operation switch 47 is pressed, the switching unit 27 inputs an operation signal for rotating the X-ray irradiator 3 by 90 degrees to the irradiator driving unit 18. Further, when the operation switch 46 is pressed, the switching unit 27 inputs an operation signal for rotating the X-ray irradiator 3 by −90 degrees to the irradiator driving unit 18. As described above, when the photographer presses the operation switches 42 to 47 of the irradiator operation panel 8, the X-ray irradiator 3 moves or rotates in the respective directions of the operation switches 42 to 47.

  The switch lighting control unit 26 moves and rotates the X-ray irradiator 3 based on the angle detection signals from the table top angle detector 21 and the illuminator angle detector 22 and the lighting table 56. The lighting of 47 is controlled. When the top 2 is in the standing position and the angle of the X-ray irradiator 3 is 90 degrees, the operation switches 42 to 47 can be driven in the directions indicated by the operation switches 42 to 47, so that the operation switches 42 to 47 are turned on. Even in this case, when the minimum distance signal is input from the minimum limit switch 52 to the switch lighting control unit 26, the operation switch 43 is turned off. When the maximum distance signal is input from the maximum limit switch 53 to the switch lighting control unit 26, the operation switch 45 is turned off.

  Further, while the X-ray irradiator 3 rotates from the rotation angle 0 degree to 90 degrees, that is, rotates counterclockwise, a counterclockwise rotation signal is input from the irradiator driving unit 18 to the lighting correction unit 55. When the counterclockwise rotation signal is input, the lighting correction unit 55 performs control to blink the operation switch 47. On the contrary, while the X-ray irradiator 3 rotates from the rotation angle 90 degrees to 0 degree, that is, rotates clockwise, a clockwise rotation signal is input from the irradiator driving unit 18 to the lighting correction unit 55. When the clockwise rotation signal is input, the lighting correction unit 55 performs control to blink the operation switch 46.

  Next, a case where the X-ray irradiator 3 rotates 180 degrees with respect to the support arm 5 in a standing position where the top plate 2 rotates 90 degrees together with the support arm 5 will be described with reference to FIGS. Such a situation is a case where the subject M standing in contact with the bucky stand 61 provided facing the standing top 2 is radiographed. 11 is a side view when the top plate is standing and the X-ray irradiator is rotated 180 degrees, and FIG. 12 is an operation of the irradiator when the top plate 2 is standing and the X-ray irradiator is 180 degrees. It is a front view of a panel.

  When X-ray imaging is performed on the subject M standing in contact with the bucky stand 61 provided facing the standing top 2, the top 2 is placed in the standing position and the X-ray irradiator 3 is rotated 180 degrees. To do. A film cassette 62 is inserted in a portion where the subject M and the bucky stand 61 are in contact with each other. A portable FPD may be used instead of the film cassette 62. In FIG. 11, the X-ray irradiator 3 and the FPD 4 are disposed at the minimum distance.

  With such an arrangement, the operation direction of the operation switches 42 to 45 of the irradiator operation panel 8 is such that the operation of the irradiator is performed when the top 2 is in the standing position and the rotation angle of the X-ray irradiator 3 is 0 degree and 90 degrees The driving direction of the operation switches 42 to 45 of the panel 8 is different. For example, the operation switch 42 when the top plate 2 is in the standing position and the rotation angle of the X-ray irradiator 3 is 0 degree indicates the direction away from the top plate 2. However, in the state where the top plate 2 is in the standing position and the X-ray irradiator 3 is rotated 90 degrees, the operation switch 42 points to the top plate head direction. Further, when the top plate 2 is in the standing position and the X-ray irradiator 3 is rotated 180 degrees, the operation switch 42 indicates a direction approaching the top plate 2.

  When the top plate 2 is in the standing position, the top plate angle detector 21 detects that the top plate is 90 degrees. Further, since the X-ray irradiator 3 is rotated 180 degrees with respect to the support arm 5, the irradiator angle detector 22 detects that the X-ray irradiator 3 is at a position of 180 degrees. Based on the respective angle detection signals from the top plate angle detector 21 and the illuminator angle detector 22 and the drive direction table 51, the drive direction control unit 23 switches the operation signal from the irradiator operation panel 8.

  Since the top plate 2 is in the standing position and the angle of the X-ray irradiator 3 is 180 degrees, the switching unit 27 refers to the driving direction table 51 and each X-ray irradiator in the standing position is 180 degrees. The corresponding driving directions of the operation switches 42 to 47 are controlled. Thus, when the photographer presses the operation switches 42 to 46 of the irradiator operation panel 8, the X-ray irradiator 3 moves or rotates in the direction of the operation switches 42 to 46.

  Further, when the top plate 2 is in a standing position and the angle of the X-ray irradiator 3 is 180 degrees, the X-ray irradiator 3 is restricted from being rotated counterclockwise. That is, the X-ray irradiator 3 cannot be rotationally driven by the operation switch 47. When the operation signal from the operation switch 47 is input, the switching unit 27 stops the operation signal.

  The switch lighting control unit 26 moves and rotates the X-ray irradiator 3 based on the angle detection signals from the table top angle detector 21 and the illuminator angle detector 22 and the lighting table 56. The lighting of 47 is controlled. Since the X-ray irradiator 3 cannot be rotationally driven by the operation switch 47, the operation switch 47 is turned off as set in the lighting table 56.

  Furthermore, in FIG. 12, the top plate 2 and the support arm 5 are in a standing position rotated 90 degrees, and the X-ray irradiator 3 is in a position closest to the top plate 2 in a state where the X-ray irradiator 3 is rotated 180 degrees. The minimum limit switch 52 in the distance detector 24 detects that the distance between the X-ray irradiator 3 and the FPD 4 is the minimum (MIN) distance. A minimum distance signal is output from the minimum limit switch 52 to the switch lighting control unit 26, and based on this signal and the lighting table 56, the lighting correction unit 55 turns off the switch 42 that operates the X-ray irradiator 3 to approach the FPD 4. To do.

  Next, with reference to FIG. 14 and FIG. 15, a case will be described in which X-ray imaging is performed on the subject M standing in contact with the bucky stand 61 provided to face the standing top 2. FIG. 14 is a side view when the top plate is standing and the X-ray irradiator is rotated 180 degrees, and FIG. 15 is an irradiator operation panel when the top plate is standing and the X-ray irradiator is 180 degrees. FIG.

  The maximum limit switch 53 in the distance detector 24 detects that the distance between the X-ray irradiator 3 and the FPD 4 is the maximum (MAX) distance. A maximum distance signal is output from the maximum limit switch 53 to the lighting correction unit 55. Based on this signal and the lighting table 56, the lighting correction unit 55 operates the operation switch 44 for operating the X-ray irradiator 3 in a direction away from the FPD 4. Turns off. Accordingly, the photographer can see that the X-ray irradiation device 3 is at the maximum distance from the top plate 2. Further, the photographer knows that the operation switch 44 cannot be operated.

  According to the present embodiment, the drive direction control unit 23 is driven by the operation switches 42 to 47 based on the rotation angles of the top plate 2 and the X-ray irradiator 3 and the information stored in the storage unit 28. Since the instructions are switched, it is possible to eliminate the deviation between the drive direction indicated by each of the operation switches 42 to 47 and the drive direction of the drive instruction output from each of the operation switches 42 to 47. That is, the drive direction indicated by each operation switch 42 to 47 can be matched with the drive direction of the drive instruction output from each operation switch 42 to 47.

  In addition, since the operation panel 8 is provided on the side of the X-ray irradiator 3 and also on the side opposite to the support arm 5 of the collimator 7, the visibility of the operator is good. The operator can operate the operation panel 8 without being obstructed by anything, and is easy to approach. Even if the top 2 is in a horizontal position, it can be operated without difficulty. Furthermore, the drive direction indicated by each operation switch 42 to 47 and the drive direction of the drive instruction output from each operation switch 42 to 47 match regardless of the angle of the top 2 or the angle of the X-ray irradiator 3. The photographer can intuitively drive the X-ray irradiator 3 and the support arm 5.

  Further, the storage unit 28 stores drive stop information in addition to the drive directions corresponding to the operation switches 42 to 47 with respect to the angle of the X-ray irradiator 3 and the angle of the top plate 2. The drive direction control unit 23 is operated from each of the operation switches 42 to 47 based on the angle of the X-ray irradiator 3 and the angle of the top plate 2 and the information of the drive direction table 51 stored in the storage unit 28. 18 or the drive instruction output to the support arm drive unit 17 is switched or stopped. Since the drive direction control unit 23 can not only switch the drive instruction output from each operation switch 42 to 47 but also stop, the operation switch 42 to 47 depends on the angle of the X-ray irradiator 3 and the top plate 2. Drive restrictions can be applied.

  The distance detector 24 detects the distance between the X-ray irradiator 3 and the FPD 4. The storage unit 57 stores a lighting table 56 that is lighting information corresponding to the operation switches 42 to 47 with respect to the angle of the X-ray irradiator 3 and the angle of the top plate 2. Based on the angle of the X-ray irradiator 3 and the top plate 2, the distance between the X-ray irradiator 3 and the FPD 4, and lighting information, the switch lighting control unit 26 can drive the X-ray irradiator 3 and the support arm 5. The direction operation switches 42 to 47 are turned on. Thus, the operator can know the directions in which the X-ray irradiator 3 and the support arm 5 can be driven, and can operate more intuitively.

  In addition, since the arrows indicating the driving direction are marked on the operation switches 42 to 47, the photographer can intuitively rotate the X-ray irradiator 3 and move the support arm 5. The burden on the photographer is reduced and the X-ray imaging time can be shortened.

  The present invention is not limited to the above embodiment, and can be modified as follows.

  (1) In the embodiment described above, the distance between the X-ray irradiator 3 and the FPD 4 is detected, and in the case of the minimum or maximum distance, the corresponding operation switch is controlled to be turned off. It is also possible to detect the amount of movement in the longitudinal direction and turn off the corresponding operation switch when the amount of movement of the support arm 5 is maximum.

  (2) In the embodiment described above, the distance detector 24 detects that the X-ray irradiator 3 is located at the minimum distance or the maximum distance with respect to the FPD 4 by the minimum limit switch 52 and the maximum limit switch 53. However, the present invention is not limited to this, and the distance may be detected using another distance sensor.

  (3) In the above-described embodiment, the X-ray irradiator 3 can be rotated every 90 degrees. However, the present invention is not limited to this, and the X-ray irradiator 3 may be rotatable at an arbitrary rotation angle. The correspondence between the drive direction table 51 and the lighting table 56 may be divided into 0 degree, 90 degrees, and 180 degrees by setting a threshold value as a boundary.

  (4) In the above-described embodiment, the control of the irradiator operation panel 8 is performed when the angle of the top plate 2 is the horizontal position of 0 degrees and the standing position of 90 degrees, but the top panel is in the horizontal position and the standing position. When located in the middle, a threshold value may be provided, and control may be performed by classifying the top plate 2 as being either in the horizontal position or standing position with the threshold value as a boundary.

  (5) In the above-described embodiment, the X-ray irradiator 3 can be rotationally driven even when the X-ray irradiator 3 and the FPD 4 are at the maximum distance, but when the X-ray irradiator 3 and the FPD 4 are at the maximum distance, The rotational drive of the X-ray irradiator 3 may be disabled. In this case, the lighting correction unit 55 performs control to turn off the operation switches 46 and 47. When there is no margin in the length of the cable to the X-ray irradiator 3, it is possible to prevent the cable from being damaged by the rotational drive of the X-ray irradiator 3.

  (6) In the above-described embodiment, the operation switches 42 to 47 in directions that cannot be driven are turned off. However, when the photographer presses any of the operation switches 42 to 47 that are turned off, the operation is performed by voice announcement. You may inform the photographer that you cannot. In this case, the maximum or minimum distance signal from the distance detector 24 is also input to the switching unit 27, and even if the photographer presses the extinguishing switch, the operation is stopped by the switching unit 27, and an audio signal is output to the speaker. To inform.

  (7) In the above-described embodiment, the FPD 4 is disposed to face the X-ray irradiator 3 with the top plate 2 interposed therebetween. However, the FPD 4 is disposed to face the X-ray irradiator 3 inside the top plate 2. Also good.

DESCRIPTION OF SYMBOLS 1 ... X-ray imaging apparatus 2 ... Top plate 3 ... X-ray irradiation device 4 ... X-ray plane detector (FPD)
DESCRIPTION OF SYMBOLS 5 ... Support arm 7 ... Collimator 8 ... Irradiator operation panel 15 ... Tilt drive part 17 ... Support arm drive part 18 ... Irradiator drive part 21 ... Top plate angle detector 22 ... Irradiator angle detector 23 ... Drive direction Control unit 24 ... Distance detector 26 ... Switch lighting control unit 28, 57 ... Storage unit 42 to 47 ... Operation switch

Claims (6)

An X-ray irradiator that emits X-rays;
A top plate on which the subject is placed;
An X-ray flat panel detector for detecting X-rays transmitted through the subject;
A support arm that supports the X-ray irradiator and the X-ray flat panel detector so as to be opposed to each other, and can extend and contract so that the X-ray irradiator and the X-ray flat panel detector approach or separate from each other.
A tilting drive unit that tilts the top plate and the support arm together;
An irradiator driving unit that rotationally drives the X-ray irradiator;
A support arm drive unit for driving the support arm in the telescopic direction and the longitudinal direction of the top plate;
An irradiator angle detector for detecting an angle of the X-ray irradiator;
A top plate angle detector for detecting the angle of the top plate;
An operation panel provided on a side portion of the X-ray irradiator and provided with an instruction switch for each rotation direction of the X-ray irradiator and a driving direction of the support arm;
A first storage unit for storing information on a driving direction corresponding to the instruction switch with respect to an angle of the X-ray irradiator and an angle of the top plate;
A driving direction control unit that switches a driving instruction output from the instruction switch to the irradiator driving unit or the support arm driving unit based on an angle of the X-ray irradiator and information in the first storage unit. X-ray imaging apparatus characterized by this. The X-ray imaging apparatus according to claim 1,
The drive direction control unit is output from the instruction switch to the irradiator drive unit or the support arm drive unit based on the angle of the X-ray irradiator, the angle of the top plate, and information in the first storage unit. An X-ray imaging apparatus characterized by switching or stopping a drive instruction. The X-ray imaging apparatus according to claim 1 or 2,
A distance detector for detecting a distance between the X-ray irradiator and the X-ray plane detector;
A second storage unit that stores lighting information corresponding to the instruction switch with respect to the angle of the X-ray irradiator and the angle of the top plate;
A switch lighting control unit for lighting the instruction switch in a direction in which the X-ray irradiator and the support arm can be driven based on the angle of the X-ray irradiator, the angle of the top plate, the distance, and the lighting information; An X-ray imaging apparatus comprising: The X-ray imaging apparatus according to any one of claims 1 to 3,
The X-ray irradiator is
An X-ray tube that generates X-rays;
A collimator for focusing X-rays generated from the X-ray tube,
The X-ray imaging apparatus, wherein the operation panel is provided on a side portion of the collimator opposite to the support arm. The X-ray imaging apparatus according to any one of claims 1 to 4,
An X-ray imaging apparatus, wherein an arrow indicating a driving direction is marked on the instruction switch. An X-ray imaging apparatus according to any one of claims 1 to 5,
While the irradiator driving unit rotationally drives the X-ray irradiator, the instruction switch indicating a direction in which the X-ray irradiator rotates is blinked and lit.

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