JP4643864B2 - X-ray equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an X-ray imaging apparatus, and in particular, uses a planar X-ray detector by making the X-ray fluoroscopic imaging table lightweight, facilitating movement of the imaging apparatus, and increasing the degree of freedom of X-ray imaging. The present invention relates to an X-ray imaging apparatus capable of performing digital (DR) imaging.
[0002]
[Prior art]
A conventional X-ray imaging apparatus has a configuration as shown in FIG. That is, the X-ray imaging apparatus has a table 3 configured with a bed on which a subject who performs X-ray imaging is placed. The table 3 is supported by the leg portion 1 by the support frame 2, and the leg portion 1 is disposed on the floor. The support frame 2 is raised and lowered by the leg 1, and the table 3 is rotated by the raising and lowering of the support frame 2. In addition, an X-ray tube device (X-ray irradiation device) 4 is provided on the upper part of the subject who is lying on the bed at a predetermined distance from the upper surface of the table 3. This X-ray tube device (X-ray irradiation device) 4 is supported by a column 5.
[0003]
On the other hand, on the lower surface side of the table 3, a video device (image intensifier II) 6, a video device support unit 7, and a rapid shooting mechanism unit 8 are provided. This video apparatus (II) 6 converts X-rays into visible light, converts them into electrical signals with a television (TV) camera (CCD; charge coupled device), and can be observed on a television monitor. Sometimes used. The video apparatus support unit 7 includes a cassette support unit 20 that supports the film cassette 11 on which the X-ray film is mounted at a specific position on the lower surface side of the table 3, and a film cassette 11 that is supported by the cassette support unit 20. A film holder 21 for mounting and holding a film for photographing is built under the mounting position. Further, the speed-measuring mechanism unit 8 has an unphotographed film magazine for storing a plurality of non-photographed films, and a photographed storage magazine for storing photographed films. Untaken film is taken out from this, the unshot film is stored in the film holder, the unshot film stored in the film holder is transported to the shooting position, and after shooting, the film holder holding the shot film Is taken to the speed-measuring mechanism 8 and the film that has been photographed and held by the film holder is taken out of the film holder and stored in the photographed storage magazine. The photographed film stored in the photographed storage magazine is taken out from the speed-mechanism mechanism unit 8 for each photographed storage magazine after completion of photographing, and is transported to the developing chamber to develop the photographed film.
[0004]
The video apparatus (I.I.) 6 is located below the video apparatus support unit 7 from the center of the table 3, and the rapid-shooting mechanism unit 8 is adjacent to the video apparatus (I.I.) 6. Supported by part 7. That is, the video apparatus (I.I.) 6 and the rapid shooting mechanism unit 8 are provided in a state of being connected to the lower part of the video apparatus support unit 7.
[0005]
As described above, in the case of a conventional X-ray imaging apparatus, an unphotographed X-ray film for photographing an area observed on a television monitor by the video apparatus (II) 6 on the lower surface side of the table 3. An image device support unit 7 including a cassette support unit 20 that supports the mounted film cassette 11 at a specific position is provided. The image device support unit 7 includes a film cassette 11 supported by the cassette support unit 20. A film holder 21 for mounting and holding the unphotographed X-ray film taken out from the non-photographed film magazine of the speed-measuring mechanism 8 at the photographing position when photographing a plurality of X-ray films continuously below the attachment position of Is provided.
[0006]
As described above, the fluoroscopic imaging is performed by inserting the film cassette 11 into the cassette support portion 20 at the lower part of the film cassette 11 mounting position, as observed on the television monitor by the video apparatus (II) 6. Since the X-ray film for photographing is attached to the film holder 21 to be photographed, the video apparatus (II) 6 is provided with a film cassette in which the X-ray film is attached at a specific position on the lower surface side of the table 3. 11 is provided on the lower side of the video apparatus supporting portion 7 provided with a cassette support portion 20 for supporting the film 11 and a film holder 21 for mounting and holding a film for photographing on the lower side of the mounting position of the film cassette 11.
[0007]
[Problems to be solved by the invention]
In this conventional X-ray imaging apparatus, the bed height on which the subject on the table 3 rests is currently 900 mm, and the subject who performs X-ray imaging sits on the table 3 while sitting down. It cannot be done, and it sleeps in the state where it climbs on the table 3. For this reason, it is not easy to use, and it is particularly difficult for a subject in a wheelchair to get on the table 3 and to lower the height position of the table 3.
[0008]
However, in the case of a conventional X-ray imaging apparatus, the video apparatus (II) 6 includes a cassette support unit 20 that supports a film cassette 11 on which an X-ray film is mounted at a specific position on the lower surface side of the table 3; Below the mounting position of the film cassette 11, it is provided on the lower side of the video apparatus support portion 7 provided with a film holder 21 for mounting and holding a film for photographing. The video apparatus support unit 7 is configured by mounting a film holder 21 for mounting and holding a film for photographing on the lower side of the mounting position of the film cassette 11 supported by the cassette support unit 20. And the thickness of the mounting space for the film holder 21 are required. In addition, the height of the video apparatus (II) 6 is currently specified as 600 to 700 mm, and considering the performance and characteristics, it cannot be made more compact. For this reason, it has the problem that the bed height on which the subject of the table 3 sleeps cannot be made lower than the present height.
[0009]
In general, X-ray fluoroscopy requires observation of a fluoroscopic part on a television monitor, and if necessary, an X-ray film is attached and a fluoroscopic image is taken on the X-ray film. In the apparatus, a film cassette 11 for photographing a fluoroscopic image observed on a television monitor on an X-ray film and a film holder 21 for holding an X-ray film for photographing are provided with an image device (II) 6 and a table 3. It is provided between the lower surface side of. Thus, the X-ray (fluoroscopic image) transmitted through the fluoroscopic region of the subject lying on the table 3 is not detected by the imaging device (II) 6 immediately below the table 3, It is detected across a distance corresponding to the thickness of the video apparatus support portion 7 provided with a space for mounting the film cassette 11 and the film holder 21. In order to capture X-rays (perspective images) transmitted through the fluoroscopic region of the subject more clearly in this X-ray fluoroscopic imaging, an X-ray film for imaging is mounted at a position closest to the lower surface of the table 3. Is the most advantageous. For this reason, the video apparatus (I.I.) 6 is provided below the video apparatus support section 7, and X-rays (fluoroscopic images) transmitted through the fluoroscopic part of the subject are displayed on the video apparatus support section 7. Therefore, there is a problem that the image device (I.I.) 6 detects the image by a thickness corresponding to the thickness of the image, the enlargement ratio increases, and the image quality is not clear. Ideally, the video apparatus (I.I.) 6 is provided directly under the table 3, but the lower side of the table 3 and the video apparatus (I.I.) 6 are related to the video apparatus support portion 7. The distance cannot be shortened.
[0010]
In general, X-ray fluoroscopy depends on the part to be imaged. However, when taking a plurality of images of the same part by changing the orientation of the subject, such as gastroscopy and intestinal fluoroscopy, Since it is not efficient to shoot using the film cassette 11 with one film mounted, the conventional X-ray imaging apparatus stores an unphotographed film magazine for storing a plurality of non-photographed films and a film that has been photographed. A rapid-shooting mechanism 8 having a photographed storage magazine is provided. Then, the speed shooting mechanism unit 8 performs a series of operations of taking out the unphotographed film from the non-photographed film magazine at the time of photographing, transporting it to the photographing position, photographing it, and storing it in the photographed storage magazine. Since the X-ray film transport distance is preferably short, it is provided adjacent to the video apparatus (II) 6. For this reason, there is a problem in that the rapid imaging mechanism unit 8 gets in the way and the video device (image intensifier II) 6 cannot be moved in a wide range.
[0011]
One object of the present invention is to provide an X-ray imaging apparatus that can perform real-time fluoroscopy with a flat-type X-ray detector and can perform film imaging as required.
[0012]
Another object of the present invention is to provide an X-ray imaging apparatus capable of imaging even if a planar X-ray detector fails.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a table on which a subject is placed, and a table support having a function of tilting the table and moving the table up and down about a direction orthogonal to the longitudinal direction of the table. An apparatus, an X-ray tube device provided at a distance from the upper surface of the table, and a flat type that is disposed on the lower surface side of the table and converts X-rays emitted from the X-ray tube device into digital signals and outputs them. An X-ray detector and a cassette support means for supporting a film cassette are provided between the tables of the planar X-ray detector.
[0014]
By configuring in this way, X-ray imaging is usually performed using a planar X-ray detector, and even when the planar X-ray detector is down, X-ray imaging is performed with a film cassette, It is possible to take an image without causing the X-ray imaging apparatus itself to be down, and it is possible to prevent the hospital and the subject from being seriously damaged.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
[0016]
FIG. 1 shows an embodiment of the present invention.
In the figure, the X-ray imaging apparatus has a bed table 3 on which a subject who performs X-ray imaging is placed. The table 3 is supported by the leg portion 1 by the support frame 2, and the leg portion 1 is disposed on the floor. The support frame 2 is raised and lowered by the leg 1, and the table 3 is rotated by the raising and lowering of the support frame 2. Further, an X-ray tube device (X-ray irradiation device) 4 is provided on the upper part of the subject who is placed on the bed table 3 at a distance from the upper surface of the table 3, and this X-ray tube device (X-ray irradiation). The device 4 is supported by the support 5.
[0017]
On the other hand, on the lower surface side of the table 3, a planar X-ray detector 12 formed in a planar shape that detects X-rays irradiated by the X-ray tube device (X-ray irradiation device) 4 as an optical signal (digital signal). Is provided. The flat X-ray detector 12 is fixed on both sides by the imaging device support portions 10a and 10b. A cassette support means 30 is provided between the flat X-ray detector 12 and the lower surface of the table 3 so that the film cassette 11 can be set close to the flat X-ray detector 12.
[0018]
As described above, the X-ray imaging apparatus shown in FIG. 1 uses X-rays irradiated by the X-ray tube apparatus (X-ray irradiation apparatus) 4 using the planar X-ray detector 12 as an optical signal (digital signal). X-ray imaging is performed by performing image processing based on the detected data. For this reason, it is not necessary to provide the video apparatus (image intensifier (II)) provided in the conventional X-ray imaging apparatus, and the video apparatus (image intensifier I I.) is not provided, so that the height position of the table 3 can be greatly reduced, and even a person using a wheelchair can easily go up on the table 3.
[0019]
Further, the X-ray imaging apparatus shown in FIG. 1 does not perform X-ray imaging on an X-ray film, but displays a flat image of a fluoroscopic image irradiated by an X-ray tube apparatus (X-ray irradiation apparatus) 4. Since it is detected by the X-ray detector 12 as an optical signal (digital signal) and processed, an unphotographed film is taken out from the non-photographed film magazine at the time of photographing, transported to the photographing position, photographed, and photographed storage magazine There is no need to provide a quick-action mechanism that performs a series of operations of storing in the table 3, and no quick-action mechanism is provided on the lower surface side of the table 3. As described above, the X-ray imaging apparatus shown in FIG. 1 removes the video apparatus (II) as in the conventional X-ray imaging apparatus, and a speed-up mechanism is provided adjacent to the video apparatus (II). Since it is not provided, the weight of the bed table on which the subject is placed can be reduced, and the planar X-ray detector 12 that is an imaging apparatus can be easily moved in a wide range.
[0020]
When the flat X-ray detector 12 is down, the film cassette 11 is mounted on the cassette support means 30 and mounted on the film cassette 11 by X-rays irradiated by the X-ray tube device (X-ray irradiation device) 4. The film is exposed to X-ray photography. Thus, since the film cassette 11 is used when the flat X-ray detector 12 is down, it is not always used, and is usually performed by the flat X-ray detector 12.
[0021]
FIG. 2 shows a specific embodiment of the cassette support means 30 of the X-ray imaging apparatus shown in FIG.
In the figure, the cassette support means 30 is constituted by rails 13 and 14 formed in a rectangular cross section so that the film cassette 11 can be slid and mounted. The rails 13 and 14 are provided at positions where the film cassette 11 can be disposed so as to contact the surface of the flat X-ray detector 12 on the table 3 side. Further, the rails 13 and 14 are provided on the video apparatus support portions 10 a and 10 b that support the flat X-ray detector 12.
[0022]
Thus, both sides of the flat X-ray detector 12 are fixed by the imaging device support portions 10a and 10b, the rails 13 and 14 for supporting the film cassette 11 are arranged on both sides of the film cassette 11, and the flat type It is directly fixed to the front surface of the X-ray detector 12. For this reason, it is not necessary to leave a gap between the rails 13 and 14 supporting the film cassette 11 and the flat X-ray detector 12 in consideration of assemblability and the like, and an image device (image intensifier II. ) The distance between the front surface of 6 and the upper surface of the table 3: L4 is the distance between the front surface of the imaging device (image intensifier II) 6 of the conventional X-ray imaging apparatus shown in FIG. Distance: Can be smaller than L6. Furthermore, since the film cassette 11 is mounted on the cassette support means 30 when the flat-type X-ray detector 12 is down, a conventional rapid-motion mechanism unit for storing a plurality of conventional X-ray films. Is not provided, and it is not necessary to support the rapid-shooting mechanism 8, the longitudinal dimension L3 of the table 3 is smaller than the longitudinal dimension L5 of the table 3 of the conventional X-ray imaging apparatus shown in FIG. can do.
[0023]
As described above, according to the present embodiment, the video apparatus (image intensifier II) 6 and the rapid-shooting mechanism for storing a plurality of X-ray films are not provided, and thus the video apparatus is supported. The table longitudinal dimension of the video device support part can be reduced, the cost can be reduced and the vertical movement stroke of the video device can be increased, the distance between the front surface of the video device and the table surface can be reduced, and the height of the table on which the subject is laid down can be increased. Therefore, it is possible to make it easier for an elderly person, a physically handicapped person, a child and the like to get on the table.
[0024]
Furthermore, according to the present embodiment, it is possible to provide an X-ray imaging apparatus including a fluoroscopic imaging table that can increase the vertical movement stroke of the video apparatus, widen the imaging range, and is safe and easy to operate. In addition, since the distance between the subject and the planar X-ray detector is reduced, the enlargement ratio can be reduced and the image quality can be improved.
[0025]
FIG. 3 shows another embodiment of the cassette support means 30 of the X-ray imaging apparatus shown in FIG.
In the figure, the cassette support means 30 is composed of surface fasteners 15 and 16 provided on one surface of the film cassette 11 and surface fasteners 17 and 18 provided on the surface of the flat X-ray detector 12 on the table 3 side. Has been. A hook-and-loop fastener has a function of hooks and loops being entangled and engaged with a single tape. The surface fasteners 15 and 16 are fixed to both sides of one surface of the film cassette 11. The surface fasteners 17 and 18 provided on the surface of the flat X-ray detector 12 on the table 3 side are fixed at positions facing the surface fasteners 15 and 16 provided on the film cassette 11.
[0026]
The surface fasteners 17 and 18 for fixing the film cassette 11 of the cassette support means 30 configured in this way are formed thin, and there is almost no space between the table 3 on the front surface of the planar X-ray detector 12. The planar X-ray detector 12 can be used closer to the subject without need, and the distance between the front surface of the image device (image intensifier II) 6 and the upper surface of the table 3 is L4. Can be made smaller than the distance L6 between the front surface of the image device (image intensifier II) 6 of the conventional X-ray imaging apparatus shown in FIG. Furthermore, since the film cassette 11 is mounted on the cassette support means 30 when the flat X-ray detector 12 is down, a plurality of cassettes with conventional X-ray films are stored. 4 is not provided, and it is not necessary to support the rapid-shooting mechanism 8, so that the longitudinal dimension L3 of the table 3 is the longitudinal dimension of the table 3 of the conventional X-ray imaging apparatus shown in FIG. : It can be made smaller than L5.
[0027]
Thus, according to the present embodiment, the cassette support means 30 is provided on the surface fasteners 15 and 16 provided on one surface of the film cassette 11 and the surface of the flat X-ray detector 12 on the table 3 side. Since the fasteners 17 and 18 are used, the film cassette 11 can be easily attached.
[0028]
Further, according to the present embodiment, even when a video device (image intensifier II) is used, the rapid-motion mechanism unit that stores a plurality of cassettes loaded with X-ray film is provided. Since it is not provided, the table longitudinal dimension of the image device support part that supports the image device can be reduced, the cost can be reduced, and the vertical movement stroke of the image device can be increased, and the distance between the front surface of the image device and the table surface can be reduced. In addition, the height of the table on which the subject is placed can be lowered, and it is possible for an elderly person, a physically handicapped person, a child, etc. to easily ride on the table. Furthermore, according to the present embodiment, it is possible to provide an X-ray imaging apparatus including a fluoroscopic imaging table that can increase the vertical movement stroke of the video apparatus, widen the imaging range, and is safe and easy to operate. In addition, since the distance between the subject and the planar X-ray detector is reduced, the enlargement ratio can be reduced and the image quality can be improved.
[0029]
【The invention's effect】
As described above, according to the X-ray imaging apparatus of the present invention, since the X-ray imaging is performed only by the planar X-ray detector, the video apparatus (image intensifier II) and the rapid photographing mechanism unit are provided. In addition, the weight of the bed table on which the subject is placed can be reduced, the size of the image device support portion supporting the image device can be reduced in the longitudinal direction of the table, the cost can be reduced, and the longitudinal movement stroke of the image device can be increased. .
[0030]
In addition, the distance between the front surface of the video device and the table surface can be reduced, and the height of the table on which the subject is placed can be reduced. Elderly people, people with physical disabilities, children, etc. can ride on the table. At the same time, it is possible to provide an X-ray imaging apparatus equipped with a fluoroscopic imaging table that can expand the vertical movement stroke of the imaging apparatus and widen the imaging range, and is safe and easy to operate.
[0031]
Furthermore, since the distance between the subject and the planar X-ray detector can be reduced, the enlargement ratio can be reduced and the image quality can be improved.
[0032]
Furthermore, according to the X-ray imaging apparatus according to the present invention, X-ray imaging is usually performed using a planar X-ray detector, and X-ray imaging is performed using a cassette even when the planar X-ray detector is down. This can be performed, and it is possible to prevent the hospital side and the subject from being seriously damaged without causing the X-ray imaging apparatus itself to be down.
[Brief description of the drawings]
FIG. 1 is a diagram showing an embodiment of an X-ray imaging apparatus according to the present invention.
FIG. 2 is a view showing an embodiment of the cassette support means shown in FIG.
FIG. 3 is a view showing another embodiment of the cassette support means shown in FIG. 1;
FIG. 4 is a schematic front view of an X-ray fluoroscopic imaging table of a conventional X-ray imaging apparatus.
[Explanation of symbols]
3 Table 4 X-ray tube device 5 Post 6 Image device 7 Image device support 10a, 10b Image device support 11 Film cassette 12 Planar X-ray detector 13, 14 Rail 15, 16, 17, 18 Surface fastener 30 Cassette support means

Claims (1)

Provided is a table on which a subject is placed, a table support device having a function of tilting the table and moving the table up and down around a direction orthogonal to the longitudinal direction of the table, and a distance on the upper surface of the table X-ray tube apparatus, a flat X-ray detector disposed on the lower surface side of the table, which converts X-rays irradiated from the X-ray tube apparatus into digital signals and outputs them, and the flat X-ray detection In an X-ray imaging apparatus provided with a cassette support means for supporting a film cassette between a table and the table, the film cassette is connected to the surface fastener provided on the film cassette, and the planar X-ray detector. An X-ray imaging apparatus characterized in that the X-ray imaging apparatus can be mounted in proximity to the planar X-ray detector through a provided surface fastener.

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