JP2001057971A - X-ray fluoroscopic photographing table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an X-ray fluoroscopic photographing table improved in easy operation of an image receiving system of a proximate fluoroscopic photographing table and capable of not only general fluoroscopic photographing but also of lateral as well as distant one. SOLUTION: A flat panel 5 containing an image-receiving screen 5a composed of semiconductor X-ray detectors is supported by an axis 6 of a holding portion 7, rotates around the axis 6 and the holding portion 7 can vertically move on a prop 8 vertical to the side face of a top plate (A), to conduct ordinary fluoroscopy. Further, the holding portion 7 can rotate 90 deg. around the axis 8a of the prop 8 and move down to rotate the flat panel 5 by 90 deg. (B), enabling side photographing for an examinee 4 with an X-ray tube separately installed. Also the holding portion 7 can move along the prop 8 down to the lowest position, turn the flat panel 5 horizontally so as to let its image-receiving screen 5a upward and be set to the back of the top plate (C), enabling distant fluoroscopy for the examinee.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an X-ray fluoroscopy table, and more particularly to an under-tube type X-ray fluoroscopy table using a flat image receiving system composed of a two-dimensional X-ray semiconductor detector.

[0002]

2. Description of the Related Art In an X-ray examination room or another X-ray examination room, a proximity operation type X-ray fluoroscopy table, a separate X-ray tube capable of performing chest radiography and the like and a separate reader imaging are provided. There are clinics and hospitals equipped with a table, a tabletop and the like. In general, an under-tube type X-ray fluoroscopy table is used as the close-up operation type X-ray fluoroscopy table, and the operation unit is provided on the fluoroscopy table. Operates a heavy and heavy X-ray receiving system (e.g., a rapid shooting device, an II, a TV camera, etc.). Although positioning and compression are easy to perform, there is a risk of exposure to the operator, so the operator must wear a protective apron and protective gloves.
Therefore, there is a demand for improved operability, such as reducing the weight of a movable video system in order to shorten the operation. In addition, for imaging of a skeletal system or the like, an imaging mechanism capable of performing Bucky imaging using an X-ray imaging cassette is provided on an upper portion where an X-ray tube is mounted on the back side of the top plate. I am doing simple photography with a tube. In addition, for chest imaging, it is necessary to secure the distance between the focal point and the film to near 2 m,
It cannot be performed by a proximity operation type X-ray fluoroscopic imaging table, but is performed by a separate X-ray tube and a separate reader imaging table. Also, when performing a side view of the subject due to the procedure of the examination,
The subject must be performed on the tabletop with his body sideways. However, in the case of a subject who cannot be moved, a side image may be taken with a separately provided X-ray tube and a top plate.
In order to effectively use the equipment, the above-mentioned proximity operation type X-ray fluoroscopic imaging table, an X-ray tube for chest imaging and the like, and a reader imaging table,
In some cases, the top plate is provided in one X-ray examination room, and the X-ray examination is performed by time sharing.

FIG. 6 shows a conventional under table tube type X-ray fluoroscopic table. Top plate 1 on which subject 4 is placed
An X-ray tube 3 disposed below the top plate 1 with the
The image receiving system 2 (the quick-copy section 2a, I.P.
I. 2b and the TV camera 2c) are integrally linked via the support portion 17. Since the operator needs to hold the operation handle 18 provided on the quick-copy section 2a of the image receiving system 2 and perform up and down movement, left and right movement, and back and forth movement, the up and down movement and the back and forth movement direction are opposite. Although the balance weight was provided and hung, the manual operation alone requires a considerable force to move the image receiving system 2 due to the enlargement of the image receiving system 2. Therefore, the force applied to the operation handle 18 is detected and the image receiving system 2 There is provided a function of performing power assist (power assist) by a motor for up-down movement and back-and-forth movement. The operation command for assisting the power is realized by detecting a force applied by the operator with a pressure sensor provided on the operation handle 18 so that the operator applies an appropriate force to the operation handle 18 in the operation direction. .

[0004] On the other hand, independently of the movement of the image receiving system 2, the couchtop 1 moves the subject 4 in the Y direction in the height direction and the X direction in the lateral direction.
It moves in the direction by pushing a switch on the operation panel 19 by motor drive. As described above, the image receiving system 2 and the top board 1 move relatively independently of each other with the subject 4 interposed therebetween, and the center of the image receiving system 2 can be positioned at a site of interest of the subject 4. Further, in order to bring the subject 4 from the horizontal position to the standing position, the X-ray fluoroscopic table can be moved up and down by a switch on the operation panel 18. The operator observes an X-ray fluoroscopic image of the subject 4 on a proximity monitor (not shown) placed near the X-ray fluoroscopy table, and operates so that the region of interest is located at the center of the image of the proximity monitor. The image receiving system 2 is moved by grasping the handle 18. Then, the photographing switch of the operation panel 19 is pressed to take an image.

[0005]

The conventional X-ray fluoroscopic table is constructed as described above, and moves the image receiving system 2 forward, backward, left, right, up and down in front of the subject 4 to perform fluoroscopy, rapid photography, The imaging by the image receiving system 2 is performed, and a cassette is mounted on the back side of the top plate 1 at a horizontal position of the top plate 1 and simple imaging of the subject 4 is performed using a separately provided X-ray tube. However, with a separate X-ray tube, it is not possible to perform fluoroscopy and imaging with the image receiving system 2. Furthermore, since there is no image receiving system 2 in the horizontal direction, there is a problem that it is impossible to perform fluoroscopic imaging in the horizontal direction.
In the conventional X-ray inspection, simple imaging is performed using a separately installed X-ray tube using a side cassette holder that holds a film cassette vertically with respect to the top plate 1. Requires a side cassette holder, which increases costs and increases the operator's labor. In order to perform fluoroscopic imaging in both the vertical and horizontal directions and imaging by the image receiving system 2, the X-ray tube 3 and the image system 2 are attached to a C-arm type holding mechanism.
Is required, and an X-ray fluoroscopy table that rotates around the subject is required. This C-arm type device is compared with a conventional proximity operation type under tube type X-ray fluoroscopy table,
Lack of quickness in operation makes the device itself expensive. Further, there is a problem that the space of the examination room is occupied greatly.

The present invention has been made in view of such circumstances, and can perform both vertical and horizontal fluoroscopic imaging of a subject 4 and imaging by an image receiving system 2.
It is an object of the present invention to provide a compact, close-operation type under-tube type X-ray fluoroscopy table with good operability.

[0007]

In order to achieve the above object, an X-ray fluoroscopy table according to the present invention has an image receiving system on the subject side with a top plate interposed therebetween and an X-ray tube on the opposite side. In an under-tube type X-ray fluoroscopy table that arranges and interlocks with the X-ray transmission image of the subject in an image receiving system, a flat image receiving system including an X-ray tube and a two-dimensional semiconductor detector is interlocked. A column vertically provided on the side of the plate, a holding unit that holds a flat image receiving system along the column and moves up and down, and a rotation mechanism that allows the flat image receiving system to rotate on the holding unit Is provided. In addition, a rotation mechanism of the holding unit, in which the holding unit rotates 90 degrees around the column, is added. Further, a slide unit is provided perpendicular to the support and moves up and down to slide the holding unit back and forth.

The X-ray fluoroscopic table of the present invention is constructed as described above, and is a flat X-ray arranged two-dimensionally in the image receiving system of a conventional close-operation type under-tube type X-ray fluoroscopic table. Using a semiconductor detector, the holding part that holds the flat image receiving system moves up and down, and further retracts or rotates to a position where the image receiving system does not interfere with the top plate, and places the image receiving system in front of the subject. Since it can be moved and set to the side of the subject, and further to the back side of the top plate, not only general fluoroscopy with the fluoroscopy table, but also side fluoroscopy with a separate X-ray tube, Further, an image receiving system is set on the back side of the top plate, and a separately provided X-ray tube can be separated from a distance to perform front-side fluoroscopic imaging. Since the flat image receiving system is used, it is lightweight, has good operability, does not require a large-scale device, and can effectively use the space of the examination room.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the X-ray fluoroscopy table according to the present invention will be described with reference to FIGS. 1, 2, 3 and 4. FIG.
The X-ray fluoroscopy table includes an X-ray tube 3 arranged below the top 1 and a flat image receiving system arranged on the top 1 opposite to the top 1 on which the subject 4 is placed. The panel 5, a holding unit 7 for holding the flat panel 5 on a rotating shaft 6, and the holding unit 7 moving up and down, rotating 90 degrees in the horizontal direction, and interlocking the X-ray tube 3 and the flat panel 5. And 8. FIG. 1 shows that the flat panel 5 of the image receiving system corresponds to FIG.
(A) set in a general fluoroscopic imaging position by the present fluoroscopic imaging table shown in FIG. 3, a state (B) set in a side fluoroscopic imaging position using a separate X-ray tube shown in FIG. FIG. 5C shows a state (C) in which the image receiving system is set on the back side of the top plate shown in FIG. 4 and the separately provided X-ray tube is set at a front perspective imaging position with a distance from a distance.

The flat panel 5 is provided with an image receiving surface 5a on the X-ray incident surface side. The image receiving surface 5a is usually arranged in an X-ray conversion film for converting X-rays into light, and in a matrix just below the X-ray conversion film. And a TFT switch connected to each photodiode array. After X-ray irradiation, each TFT switch is sequentially turned on to read out signal charges accumulated in each pixel and form an X-ray image. And a radiation sensor array consisting of a conversion film that responds to radiation and outputs a charge signal corresponding to the incident dose directly.
A switch is connected, and by sequentially turning on each TFT switch at the time of irradiation, there are two types of a type of reading out the signal charges accumulated in each pixel and forming an X-ray image. Either type is used. May be.

The holding portion 7 is supported by a support column 8 and usually has
A U-shaped frame is formed on the side of the top plate 1 in parallel with the top plate 1 and is located above the top plate 1, and a flat panel 5 is held by a shaft 6 of the frame. ing. The flat panel 5 can be rotated about its axis and set. Further, the holding portion 7 can move up and down along the column 8. Also, 9 around the axis 8a of the support 8
It can rotate 0 degrees horizontally. A state in which the flat panel 5 of the image receiving system is set at a general fluoroscopic imaging position by the present fluoroscopic imaging table shown in FIG. 2, and in FIG. 1A, the flat panel 5 is opposed to the top plate 1 on which the subject 4 is placed. The X-ray tube 3 arranged below the top plate 1 and the flat panel 5 of the image receiving system arranged above the top plate 1 are integrally linked via a support 8, and the flat panel 5 The support 8 can be moved up and down. Further, the flat panel 5 can rotate around the axis 6. Then, the flat panel 5 is set at the side perspective imaging position using the separately provided X-ray tube 16 shown in FIG. 3, and in FIG. The flat panel 5 is rotated 90 degrees so that the image receiving surface 5a thereof faces the subject 4 side on the holding unit 7, the holding unit 7 moves downward, and the flat panel 5 The X-ray tube 16 is set on the side surface, and the X-ray tube 16 can be used to perform a fluoroscopic imaging of the subject 4. Further, a state in which the flat panel 5 is set on the back side of the top plate 1 shown in FIG. 4 and the separately provided X-ray tube 16 is set at a front perspective imaging position away from a distance, FIG.
The holding part 7 rotates 90 degrees about the axis 8a of the support 8,
The flat panel 5 rotates 90 degrees on the holding unit 7, the holding unit 7 moves downward along the column 8, and the flat panel 5 rotates 90 degrees on the holding unit 7 to raise the image receiving surface 5 a and hold the image. The part 7 rotates 90 degrees around the axis 8a of the support 8,
A flat panel is set on the back side of the top board 1, and a front X-ray image of the subject 4 can be taken by a separately provided X-ray tube 16 suspended from the ceiling by a ceiling suspension unit 15.

FIG. 5 shows another embodiment of the present X-ray fluoroscope. The X-ray fluoroscopy table is provided with an X-ray
A flat tube 12 of an image receiving system, which is disposed on the top plate 1 with the top tube 1 on which the subject 4 is to be placed sandwiched therebetween, and a holding unit 9 for holding the flat panel 12 with a rotating shaft 13
And a supporting portion 10 that allows the holding portion 9 to slide back and forth, and a supporting column 10 that moves the sliding portion 11 up and down and interlocks the X-ray tube 3 and the flat panel 12. The flat panel 12 uses the same two-dimensionally arranged X-ray semiconductor detector as described above, and the mechanism by which the flat panel 12 moves up and down the column 10 is different. Here, the holding unit 9 holding the flat panel 12 by the shaft 13 can move back and forth on the slide unit 11, and the slide unit 11 moves up and down on the support column 10, so that the flat panel 12 is moved. Can move up and down. FIG. 5 shows a state (P) in which the flat panel 12 of the image receiving system is set at a general fluoroscopic imaging position by the main fluoroscopic imaging table shown in FIG. 2 (P), and a separate X shown in FIG.
The state (Q) set at the side perspective imaging position using the X-ray tube, and further, the image receiving system is set on the back side of the top plate shown in FIG. Shows the state (R) set to (R). In the state of (P),
The holding portion 9 holding the flat panel 12 is
The flat panel 12 slides on a slide portion 11 provided vertically to the front and back, and the flat panel 12 moves back and forth, and the slide portion 11 moves up and down along the support post 10, and
2 can rotate about the axis 13 on the holding part 9. In the state of (Q), the holding unit 9 slides on the slide unit 11 and the flat panel 12 retreats backward,
The image receiving surface 12a is rotated by 90 degrees on the holding unit 9 so as to face the subject 4, and the slide unit 11 moves downward along the column 10, and the X-ray tube 1 placed separately from the flat panel 12
6 allows the patient to perform side perspective fluoroscopy. In the state of (R), the holding unit 9 slides on the slide unit 11, the flat panel 12 retreats backward, rotates 90 degrees on the holding unit 9, and the slide unit 11 moves downward along the support 10. The flat panel is rotated 90 degrees on the holding unit 9 so that the image receiving surface 12a faces upward. The flat panel is taken out of the slide unit 11 and set on the back side of the top plate 1, and is inspected by the separately provided X-ray tube 16. Of a person can be seen through the front.

In the above embodiment, the flat panels 5, 1
2 is rotated by 90 degrees. However, when it is preferable that the part to be subjected to the fluoroscopic imaging of the subject is irradiated with an X-ray beam obliquely, the flat panels 5 and 12 are set to the X direction.
The flat panels 5 and 12 may be set at right angles to the line beam, and the flat panels 5 and 12 may be set obliquely with respect to the holding units 7 and 9.

1 and 5, the pillars 8 and 10 are shown as square pillars. The pillars 8 and 10 are square pillars, and the pillars supporting the X-ray tube 3 and the flat panels 5 and 12 are cylindrical pillars. The structure is a heavy pillar, and does not need to be a square pillar, and may be a single pillar as a cylinder.

[0015]

The X-ray fluoroscopy table of the present invention is constructed as described above. The image receiving system of the conventionally used under-tube type X-ray fluoroscopy table, which is conventionally used, is a rapid-moving section, Since the volume of an image intensifier, a TV camera, and the like is large and heavy, and its moment of inertia is large, it is extremely labor-intensive to operate an image receiving system and locate the subject at an examination site. Inspection time was required. On the other hand, the image receiving system of the X-ray fluoroscopy table uses a flat panel composed of two-dimensionally arranged X-ray semiconductor detectors, so it is lightweight, has a small moment of inertia, and is easy to operate. Yes, it is possible to easily position the flat panel at the examination site of the subject in a short time. Since the volume is reduced, there is no feeling of oppression to the subject, and the operability of the operator is improved. In addition, because the image receiving system is a thin flat panel, the flat panel can be easily moved up and down along the support provided on the side of the top panel, and the flat panel is retracted to a position where it does not interfere with the top panel. Or by rotating the flat panel, the flat panel can be moved not only to the front of the subject, but also to the side of the subject and to the back of the top board. For this reason, the flat panel is used not only for general fluoroscopy with the main fluoroscopy table, but also for side perspective fluoroscopy using a separate X-ray tube. You can take a fluoroscopic front view from a distance. By installing one X-ray fluoroscopy table, it is possible to perform general fluoroscopy, side fluoroscopy, long distance chest radiography, etc., eliminating the need for large-scale equipment and making the examination room space effective. Can be used for

[Brief description of the drawings]

FIG. 1 is a view showing one embodiment of an X-ray fluoroscopic imaging table according to the present invention.

FIG. 2 is a diagram showing a state in which a flat panel is set on the front surface of a subject on the X-ray fluoroscopic table of the present invention.

FIG. 3 is a diagram showing a state in which a flat panel is set on a side surface of a subject on the X-ray fluoroscopic table of the present invention.

FIG. 4 is a diagram showing a state in which a flat panel is set on the back side of a top plate on the X-ray fluoroscopic imaging table of the present invention.

FIG. 5 is a view showing another embodiment of the X-ray fluoroscopy table of the present invention.

FIG. 6 is a view showing a conventional X-ray fluoroscopic imaging table.

[Explanation of symbols]

1. Top board 2. Image receiving system 2a. I. 2c ... TV camera 3 ... X-ray tube 4 ... Subject 5 ... Flat panel 5a ... Image receiving surface 6 ... Axis 7 ... Holding part 8 ... Strut 8a ... Shaft 9 ... Holding part 10 ... Strut 11 ... Slide part 12 ... Flat panel 12a ... Image receiving surface 13 ... Shaft 14 ... Handle 15 ... Ceiling suspension part 16 ... X-ray tube 17 ... Support part 18 ... Operation handle 19 ... Operation panel

Claims (3)

[Claims] 1. An under system for arranging an image receiving system on the subject side with a top plate therebetween and an X-ray tube on the opposite side thereof, and for interlocking the X-ray transmission image of the subject with the image receiving system. In a tube-type X-ray fluoroscopy table, a column vertically provided on the side of a top plate that links a flat image receiving system including an X-ray tube and a two-dimensional semiconductor detector, and a flat image receiving system along the column. An X-ray fluoroscopy table, comprising: a holding unit that holds and moves up and down; and a rotation mechanism that can rotate a flat image receiving system on the holding unit. 2. The X-ray fluoroscopy table according to claim 1, wherein said holding unit further includes a rotation mechanism for rotating the holding unit by 90 degrees about said column. 3. The X-ray fluoroscopy table according to claim 1, further comprising a slide portion provided vertically to said support column and configured to move up and down and slide said holding portion back and forth.