JPS63153051A - Control system of x-ray fluoroscopic imaging stand - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a control system for an X-ray fluoroscopic imaging table, and in particular, the present invention relates to a control method for an X-ray fluoroscopic imaging table, and in particular, a system in which both an imaging system unit and a top plate are movable in the body axis direction of a subject. This invention relates to improving the operability of a fluoroscopic imaging table.

[Background of the invention]

In the conventional apparatus as described above, the movement of the imaging system unit and the top plate in the body axis direction of the subject (hereinafter referred to as vertical movement) is either at different speeds or at the same speed. In this case, each individual had to perform an evacuation operation to prevent contact with the floor. In this method.

When the operator raises and lowers the top while observing the perspective image, when some of the parts come to a position where they are likely to touch the floor, they move separately (only the parts that are likely to touch the floor move). ), the affected area was removed from the transparent field of view, and the operator had to perform a new movement operation to align one of them with the other. This will be explained using drawings. In FIG. 2, the top plate 5 is held in a horizontal position while observing the affected area 8a. Clearance A between the video equipment section and the floor surface
is a distance that is appropriate when in a horizontal position, but if it is further tilted in the opposite direction, it will come into contact with the floor surface. Therefore, conventionally, when the operator operates in the reverse tilting direction, the imaging system unit 9 is automatically moved toward the foot side of the subject 8 (in the direction of arrow F), as shown in FIG. The reverse tilting operation was performed after setting the camera to a position where the clearance B between the video system section 6 and the floor surface was maintained appropriately. Since the imaging system unit 9 has moved by the distance S, the subject 8, that is, the top plate 5 must be moved by the distance S when observing the affected area 8a.

FIG. 3 is a diagram in which the affected area 8a is positioned so that it can be observed at the center of the X-ray irradiation field. As described above, in the past, for example, when the video system unit 9 came into contact with the floor, only it was evacuated, so the operator had to perform an operation to move the top plate each time.

[Purpose of the invention]

An object of the present invention is to solve the above-mentioned problems and provide a control system for an X-ray fluoroscopy table in which the positional relationship between the imaging system and the top plate does not change regardless of the operator's intention. do.

[Summary of the Invention] The above-mentioned problem is that the moving speed of the video system unit and the top plate unit are made the same, and one of them moves (evacuates) to avoid contact with obstacles such as the floor. In some cases, this can be achieved by simultaneously moving the other side in accordance with the one that comes into contact with the obstacle.

[Embodiments of the invention]

An embodiment of the present invention will be described with reference to FIG.

A top plate support portion 3 is fixed to a safe gear 2 which is supported by a support base IK. The binion 4 is meshed with the safety gear 2, and by rotating the pinion 4, the top plate 5. The imaging system section 6, which is vertically movably supported by the top plate support section 3, is integrated with the X-ray tube device section 7 which faces the top plate 5 between the standing position (90°) and the reverse tilted position. It can be raised and lowered up to (-30°). X-ray tube device section 7 towards the affected area 8a of the subject 8
When performing fluoroscopic imaging diagnosis by converting the transmitted image of X-rays emitted from the camera into visible light using the imaging system 6, the operator operates the operation switch on the operation table (not shown) and sets it to the optimum position. Observe. In X-ray fluoroscopic diagnosis of the gastrointestinal system, in which barium sulfate is adhered to the inner wall surface of a cylindrical or spherical shape and an XIfslSi image must be observed, it is necessary to move the subject 8 from a standing position to a reverse tilted position. In this type of device, the positioning operation of the affected area 8a in the body axis direction is usually performed using the top plate 5.
This is done by integrating the imaging system section 6 and the X-ray tube device section 7 and moving the imaging system section 9 without moving the object (subject 8).

In the present invention, the top plate 5 and the video system unit 9 are oriented in the same direction with respect to the top support portion 3 from the reverse tilted position shown in FIG. 3 to the horizontal position shown in FIG. 4 to the standing position shown in FIG. By moving at the same speed, the affected area 8a can be observed at all times. For convenience of explanation, the operation of the conventional device is shown in Fig. 2.
As shown in the figures, when starting the operation of the present invention from the standing position shown in Fig. 1, passing through the reverse tilt position 3 and returning to the standing position, the affected area 8a is the center of observation as shown in Fig. 5. There is no deviation from the distance S. That is, as shown in FIG. 2, the top plate 5 and the video system unit 9 move in the direction of arrow F to an appropriate position in the same direction and speed, and then move to a reverse tilted position as shown in FIG. 3. From Figure 4 in the horizontal position to Figure 1 in the standing position
When making a diagram, the top plate 5 and the video system device 9 move in the same direction and speed in the direction of the arrow G shown in FIG. After moving to the position shown in Figure 1 in the standing position. In this method, although this does not occur in normal imaging of the gastrointestinal tract, it is possible that the top plate 5 and the imaging system unit 9 may not move to a predetermined position due to a difference in their vertical movement strokes. In this case, only the object that comes into contact with the floor will be evacuated, which will cause the affected area to shift with respect to the center of the imaging system, which is unavoidable.

In carrying out the present invention, the speed of both is an issue, but conventionally the speed of the top plate on which the subject stands is 40 to 50 m+/
S, and the speed of the video equipment section is 40 to 90 tyre.
/S, so it is better to match it to about 50 pieces/S. Furthermore, increasing the speed at which the patient is moved is not a good idea because it increases the subject's sense of anxiety. Note that if the moving speed of the video system unit is slowed down just for the purpose of the present invention, the efficiency will drop to the level of normal positioning.
The moving speed of the video system device may be made variable so that it can move at high speed during normal positioning.

〔Effect of the invention〕

As described above, in the conventional device, by setting the vertical movement speed of the video system unit and the top plate unit to be the same and operating them simultaneously, an image shift that was not intended by the operator occurred, but the present invention eliminates this problem. The operator can concentrate on diagnosing the fluoroscopic image.

[Brief explanation of the drawing]

Does the attached drawing show the relationship between the raising and lowering of the top plate and the movement of the video equipment/top plate? Figure 1 shows the top board in the upright position, Figure 2 shows the top board in the horizontal position, Figure 3 shows the top board moved from the state shown in Figure 2 to the reverse tilted position, and Figure 4 shows the top board in the reverse tilted position. FIG. 5 is a diagram showing an example of a conventional control method, showing a state in which the top plate is in a horizontal position from the state shown in FIG. 3. 1... Support stand, 3... Top plate support part, 5... Top plate,
6... Imaging system unit, 7... X-ray tube device unit, 8... Subject, 8a... Affected area, 9... Imaging system unit, A,
B... Clearance between the video equipment section and the floor.

Claims (1)

[Claims] 1. An X-ray system in which both the imaging system unit and the top plate have independent drive units and are movable in the direction of the subject's body axis, and the top plate can be raised and lowered from a standing position to a reverse tilted position. On the fluoroscopic imaging table,
The video system device section can be driven at a moving speed that includes the same speed as the moving speed of the top board section, and when the top board is raised and lowered from the current top board angle to a desired direction and angle, the video system device section It is characterized in that it detects in advance that at least one of the top plate and the top plate comes into contact with the floor, and simultaneously moves the imaging system and the top plate to a position where they no longer come into contact with the floor at the same speed. A control method for an X-ray fluoroscopy table.