JPH078478A - Fluoroscopic apparatus - Google Patents

Abstract

PURPOSE:To improve the working efficiency, reliability, and safety by reducing the number of movement controls such as an X-ray tube or a top plate and making a quick positioning. CONSTITUTION:The position of the contrast medium being a part to be tested of a subject on a television monitor is detected by a sensor. An arithmetic part 13 calculates the deviation between the detected position and the center position in the television monitor 11. A motor control part 16 shifts the top plate or the X-ray tube so as to correspond to the deviation and moves the part to be tested to the center of the photographing area (the center of the television monitor 11). Thus, the photographing positioning can be easily and smoothly performed and the diagnosis efficiency is improved. Accordingly, the reliability and safety to the subject can be secured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an X-ray fluoroscopic imaging table for observing a fluoroscopic image of an object, and more particularly to a technique for automatically setting an imaging position of the object.

[0002]

2. Description of the Related Art A top plate 35 shown in FIG.
The subject into which the contrast agent has been placed is placed on the subject, and the X-rays emitted from the X-ray tube 31 are limited by the diaphragm device 32 to irradiate the subject.
Then, the X-ray transmitted through the subject is photographed as an X-ray photograph by the film of the quick-shooting mechanism unit 33. Alternatively, transmission X
I. I. An optical image is converted by 34, and an X-ray television camera 36 displays it as a transparent image on a monitor 37. When a normal examination is performed on this X-ray fluoroscopic imaging table, one subject is photographed about 20 times, and the posture and position of the subject are changed for each photographing.

The operator gives a posture and a position instruction to the subject for each photographing, and the subject moves his body according to the instruction. At this time, the operator can monitor the I.D. I. Three
4 is looking at the fluoroscopic image of the examination site (mainly the stomach part) of the subject, and the operating lever 38 is operated while observing the fluoroscopic image, I. 34, the X-ray tube 31, or the top plate 35 is moved so that the center of the examination site of the subject is I.D. I. It was moved to the center of the 34 shooting areas.

[0004]

In the above-mentioned conventional apparatus, since the posture of the subject is changed for each radiography, the X-ray tube, the I.D. I. Alternatively, it is necessary to move the top plate or the like so that the inspection site is the center of the imaging region. Then, the confirmation of the inspection site is performed by the I.D. I. The X-ray image was observed on the monitor, and therefore, X-rays had to be emitted every time the adjustment by the operation lever was performed or during the adjustment. As a result, it is troublesome because the user has to frequently and quickly operate while watching the monitor.

Furthermore, in routine radiography such as group medical examination, the number of subjects is tens and the same moving operation is repeated many times, so that the operator may make an erroneous operation.
Further, even for the subject, fine movement is uncomfortable, and irradiation with X-rays for a long time lacks safety.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to improve the working efficiency, reliability and safety by reducing the number of movement operations of the X-ray tube, the image system device or the top plate and performing quick positioning.

[0007]

In order to achieve the above object, an X-ray tube for irradiating a subject with X-rays, an image system device for visualizing transmitted X-rays from the subject, and a subject Contrast agent detection for detecting the position of the contrast agent injected into the subject on the monitor in an X-ray fluoroscopic imaging table having a top plate to be mounted and a monitor for displaying an image obtained by the video system device. And a calculator for calculating the deviation between the position information obtained by the contrast agent detector and the target position preset on the monitor, and the position obtained by the contrast agent detector based on the calculation result. A control unit for moving at least one of the image system device, the X-ray tube, and the top plate for moving to the target position in the monitor is provided. Further, a video system device for each radiographing during the routine radiographing for sequentially changing the examination site of the subject and a storage device for storing the positional information of the X-ray tube or the top plate are provided. Furthermore, an information transmission device for transmitting information corresponding to the movement of the image system device, the X-ray tube or the top plate is provided.

[0008]

The contrast agent detector detects the position of the contrast agent, which is the inspection site of the subject on the monitor, the arithmetic unit calculates the deviation between the detection position and the central position in the monitor, and the control unit calculates this deviation. The top plate, the X-ray tube, or the image system device is moved so as to correspond to, and the examination site is moved to the center of the imaging region (center of the monitor). As a result, photographing can be automatically positioned and diagnosis can be performed smoothly.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing the configuration of this embodiment, and FIG. 2 is a perspective view of an X-ray fluoroscopic imaging stand showing the specific operation of this embodiment. 11 is an I.D. I. 34 is a television monitor that displays a perspective image from the I.34. I. 34 and X-ray TV camera 36
A sensor arranged in an optical system between the sensor and the television monitor 11 for detecting the position of the contrast agent at the examination site, and 13 denotes the position of the contrast agent detected by the sensor 12 and the television monitor 1.
1 is a calculation unit that calculates a deviation from the center position of the motor 1, 16 is a motor control unit that controls the motor unit 17 or 18 from the result of the calculation unit 13, 17 is a motor unit that moves the top plate 35, and 18 is an X-ray Tube 31, I.V. I. 34 is a motor unit for moving 34.

Next, the operation of this embodiment will be described. First, when imaging the stomach of the subject, the subject is made to drink a contrast agent and placed on the top plate 35. In this state, the operator visually measured the X-ray tube 31, I. I. Match 34. Then, the subject is irradiated with X-rays and I.D. I. Fluorescence is performed by 34, and the fluoroscopic image is displayed on the television monitor 11. The stomach of the examination site is I. I. If it is on the sensor 12i on 34, the data from the sensor 12i is output to the arithmetic unit 13. At this time, the stomach part of the examination site is displayed on the TV monitor 1.
A target position (for example, the center of the screen) is determined in advance to which position on 1 the user wants to move, and this data is input to the calculation unit 13.

Then, the calculation unit 13 calculates the deviation between the actual position of the stomach from the sensor 12i and the target position and outputs it to the motor control unit 16 as a movement signal. As a method for calculating the amount of deviation, the position of the sensor 12i and the target position are obtained by XY coordinates, and the difference between the two is calculated. The motor control unit 16 outputs a movement control signal to the motor unit 17 and the motor unit 18 in response to the movement signal, and the top plate 35, the X-ray tube 31, the I.D. I. 34 is moved to move the stomach of the examination site to the target position. In other words, the position of the examination site of the subject that was first seen through is I. I. 34, the top plate 35, the X-ray tube 31, the I.D.
I. 34 moves.

To explain this operation in detail, the top plate 35, the X-ray tube 31, and the I.D. I. The position of 34 is shown in FIG.
Then, in order to move this image to the central position (FIG. 1B), the X-ray tube 31 and the I.D. I. 34 is moved in the A direction, and the top plate 35 is moved in the B direction.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a block diagram showing the configuration of the second embodiment of the present invention. Here, description of the same reference numerals as those described above will be omitted. 20 is an X-ray tube 31 corresponding to various imaging patterns,
I. I. This is a memory for storing the position of the top plate 34 or the top plate 35. Next, the operation will be described. First, the shooting pattern stored in the memory 20 is selected. This selection signal is input to the motor control unit 16 and is input to the motor unit 17 or the motor unit 1.
8 is operated. The position data of the motor units 17 and 18 is fed back to the motor control unit 16, and the memory 20
It is controlled until the set position of. Then, when the position is determined, the position of the contrast agent is confirmed by the sensor 12 and moved to the target position in the same manner as described above, and this operation is performed for each routine imaging.

Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 4 is a perspective view of an X-ray fluoroscopic imaging table including the third embodiment of the present invention. Here, description of the same reference numerals as those described above will be omitted. 21 is an automatic voice device. Next, the operation will be described. Although the movement to the target position or the movement by the memory 20 is automatically performed, there are cases where it is dangerous to perform all the movement automatically. For example, it is reverse tilt imaging in which the subject's head is facing down. In such a case, the automatic audio device 21 gives an appropriate instruction to the subject. The automatic audio device 21 includes the contents stored in the memory 20, the X-ray tube 31, the I.D. I.
Various data such as instructions, cautions, and warnings to the subject are stored so as to correspond to the position of the top plate 35 or the top plate 35.

As a result, the X-ray tube 31, I.S. I. Since the 34 or the top plate 35 can be easily and smoothly arranged, the diagnostic efficiency is improved, and the reliability of the subject is improved, and further safety can be secured.

In this embodiment, the top plate 35 and the X-ray tube 3 are used.
1, I. I. The movement control of 34 is performed by automatic setting, but manual setting with the lever 38 can be performed as in the conventional case.
Further, in the present embodiment, the amount of deviation is calculated by obtaining the difference between the XY coordinates of the position of the sensor on which the contrast agent portion of the inspection site is applied and the XY coordinates of the target position. More accurate positioning can be performed by calculating the center position of the area of the agent and obtaining the amount of deviation between the center position and the target position. Furthermore, when the contrast agent is spread over multiple sensors, priority is given to the order in which the concentration of the contrast agent is the highest among the multiple sensors, or the priority is given to the sensor itself, so that the amount of deviation in a wide range of examination sites is increased. Can also be asked. Furthermore, in the present embodiment, the target position is located at the center of the screen, but it can be set at any position.

[0017]

According to the present invention, the deviation between the inspection site detected by the contrast agent detector and the target position in the monitor is calculated by the calculation unit, and the control unit controls the top plate, the X-ray tube, and the image system device. Since it is moved, the imaging positioning can be performed automatically and easily and smoothly, and the diagnostic efficiency is improved. In addition, since it can be moved smoothly to the inspection site and the target position, fine movement is eliminated, and discomfort to the subject is eliminated and X
The irradiation time of the line can be shortened and safety can be secured.

Further, since the position of the image system device, the X-ray tube or the top plate at the time of routine radiography is stored in the storage device, the image system device, the X-ray tube or the top plate is surely arranged at the inspection site for each radiography. The reliability is improved.

Further, since an instruction or the like can be sent from the information transmission device to the subject for each radiographing, the subject can change the posture and position according to the instruction, which enables smooth radiographing and prevents danger.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of the present invention.

FIG. 2 is a perspective view of an X-ray fluoroscopic imaging table showing a specific operation of the present invention.

FIG. 3 is a block diagram showing the configuration of a second embodiment of the present invention.

FIG. 4 is a perspective view of an X-ray fluoroscopic imaging table including a third embodiment of the present invention.

FIG. 5 is an explanatory diagram of a configuration of an X-ray fluoroscopic imaging table.

[Explanation of symbols]

 11 TV monitor 12 sensor 13 arithmetic unit 16 motor control unit 17 motor unit 18 motor unit 20 memory 21 automatic audio device 31 X-ray tube 32 diaphragm device 33 quick-shooting mechanism unit 34 I. I. 35 Top Plate 36 X-ray TV Camera 38 Lever

Claims (3)

[Claims] 1. An X-ray tube for irradiating a subject with X-rays, an image system device for imaging transmitted X-rays from the subject, a tabletop on which the subject is laid, and an image system device for obtaining the image. In the X-ray fluoroscopic imaging table having a monitor for displaying the captured image, a contrast agent detector for detecting the position of the contrast agent injected into the subject on the monitor, and the contrast agent detector A calculation unit for calculating a deviation between position information and a target position preset on the monitor, and the image system for moving the position obtained by the contrast agent detector from the calculation result to the target position in the monitor. An X-ray fluoroscopic imaging stand provided with a control unit for moving at least one of an apparatus, an X-ray tube and a top plate. 2. A video system device for each radiographing during a routine radiographing for sequentially changing and examining an examination region of a subject, and a storage device for storing positional information of an X-ray tube or a top plate. The X-ray fluoroscopic imaging stand according to claim 1. 3. An X-ray fluoroscopic imaging stand according to claim 1, further comprising an information transmission device for transmitting information corresponding to the movement of the image system device, the X-ray tube or the top plate.