JP2000135212A - Digital photography base - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate operation by using a semiconductor flat surface sensor. SOLUTION: A top plate 24 is installed on an upper part of a leg 23 having a caster 22, and a rail 26 to move a semiconductor flat surface sensor 25 in parallel is installed on the leg 23 under the top plate 24. On the rail 26, a position detection means 27 to detect the position of the flat surface sensor 25 is provided, and a moving means 28 for the flat surface sensor 25 is provided in addition. On the flat surface sensor 25, a communication means is provided, and a cable 31 connected to an X-ray photography device as a separate body is connected to this communication means. In the cable 31, a power supply line is also included, and power to this photography base is supplied by the power supply line by the cable 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital imaging table which can be used by connecting to an X-ray imaging apparatus.

[0002]

2. Description of the Related Art Conventionally, X-ray photography is performed by an X-ray photography apparatus as shown in FIGS. FIG. 5 is a side view of a conventional imaging table 1, in which a patient is placed on a top plate 3 fixed to the floor by legs 2, and a cassette 5 is mounted on a rail 4 provided below the top plate 3. , The imaging position is roughly set, and then X-ray irradiation is performed from above to perform X-ray imaging.

FIG. 6 shows a photographing table 11 not using the cassette 5.
An X-ray image intensifier 13 and an X-ray tube 14 fixed by a support frame 12 are respectively disposed above and below a top plate 3 on which a patient is placed. Moving the frame 12 to the moving means 1
5 is set by moving.

Since the cassette 5 shown in FIG. 5 uses a film, moving images or quick images cannot be formed, but a high-resolution image having a large screen of 17 inches × 14 inches or more can be obtained. On the other hand, although the X-ray image intensifier 13 in FIG. 6 can be manufactured with a large screen having a diameter of 16 inches, it is 17 inches × 14 inches.
Nothing that can capture a rectangular image of inches or more has been developed. However, although the resolution is inferior to that of film, the X-ray image intensifier 13 is excellent in moving images and rapid imaging.

[0005]

However, it is very difficult for the imaging table 1 shown in FIG. 5 to be set on the target affected area with the cassette 5 in a state where the patient is placed on the tabletop 3, and the examiner has an eyesight. There is a problem that the photographing position is set by the amount. Further, in the imaging stand 1 shown in FIG. 6, it is easy for the examiner to set the image position by using the moving means 15, but the imaging purpose is different, and the cassette 5 is used like the imaging stand 1. You can not take pictures.

As a modified example of the photographing table 1, a movable photographing table provided with casters on the legs 2 has been proposed, but even in this case, setting the position of the cassette 5 is not easy. Further, it is conceivable to employ the X-ray image intensifier 13 for the imaging region in FIG. 5, but in this case too, space becomes a problem, and it is extremely difficult to use the imaging system as shown in FIG.

An object of the present invention is to solve the above-mentioned problems,
It is an object of the present invention to provide a digital imaging stand that uses a semiconductor flat sensor and is easy to operate.

[0008]

A digital photographing table according to the present invention for achieving the above object has a top plate means which easily transmits X-rays, a rail means installed in parallel with the top plate means, A semiconductor planar sensor that moves via the rail means and a position detecting means for detecting a positional relationship between the planar sensor and the rail are provided.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in FIGS. FIG. 1 is a plan view of a digital photographing table 21 in the embodiment, and FIG. 2 is a side view thereof. A top plate made of a rigid and easily transmissive X-ray is provided on a leg 23 having a caster 22. A rail 26 for parallel movement of the semiconductor flat sensor 25 is attached to the leg 23 below the top plate 24. The flat sensor 25 has an area of 17 inches × 17 inches in order to support all conventional radiography. A position detecting means 27 for detecting the position of the flat sensor 25 is provided on the rail 26, and a moving means 28 for the flat sensor 25 is provided, and is controlled by a moving controller 29. The plane sensor 25 is provided with a communication unit 30.
A cable 31 for connecting to the radiographing apparatus is connected.
The cable 31 also includes a power line, and power to the imaging stand 21 is supplied by a power line via the cable 31.

[0010] Depending on the position of the patient on the top 24,
Position detecting means 27 controlled by movement controller 29
Moves the flat sensor 25 to a desired position on the rail 26 by the moving means 28. The position detecting means 27 is composed of three points, and can measure the distance from the camera based on the delay time from the electromagnetic wave transmitter attached to the visible light camera provided in the X-ray apparatus. If the inclination of the plane of the plane sensor 25 is not taken into consideration, the position detecting means 27 can be composed of two points. The transmission interval of the electromagnetic wave is about 0.1 second, and the position of the imaging unit of the flat sensor 25 can be displayed on the display device with a delay time corresponding to this.

More specifically, the electromagnetic waves emitted from the transmitter reach the above-described three position detecting means 27, but the arrival timing is different unless the planar sensor 25 is located immediately below the visible light camera. In other words, the direction in which the plane sensor 25 exists when viewed from the visible light camera can be calculated from the arrival time difference of the signal. When the direction information is calculated, the outline of the flat sensor 25 can be displayed on the camera image as described later by calculating the difference from the direction of the camera image currently being viewed. After the plane sensor 25 moves to a desired position, X-ray imaging is performed by performing X-ray irradiation from above. Flat sensor 2
5, information such as collected image data, a sensor ID, an exposure synchronization signal, etc.
1 to the X-ray apparatus.

FIG. 3 shows a digital photographing table 2 in this embodiment.
1 shows a schematic diagram of connecting the X-ray imaging apparatus 1 to an X-ray imaging apparatus 41 via a cable 31. The plurality of imaging tables 21 and the plurality of imaging apparatuses 41 can be connected and used in any combination. The main body 42 of the X-ray imaging apparatus 41 includes a caster 43
The X-ray generator 46 is moved to a position near an arbitrary imaging table 21, and the X-ray generator 46 is moved to a part of the patient to be imaged by using the visible light camera 45 equipped with the above-mentioned electromagnetic wave transmitter 44. It can be arranged above. On the other hand, the image processing device 4
7. A display device 48 is provided, and a controller 49 is connected to the main body 42 via a cable.

The X-ray exposure timing is determined by the controller 49.
The flat sensor 25 is actuated by the signal from the X-ray generator, the actuation completion signal becomes an emission release signal, and after being input to the main body 42, the X-ray generator 46 emits X-rays. The X-ray image captured by the plane sensor 25 is
Are converted into digital signals, transferred to the image processing device 47 of the X-ray imaging device 41, and subjected to correction processing such as pre-processing, frequency emphasis, gradation conversion, etc., and are displayed on the display device 48. The data is stored in the processing device 47. Since the offset correction and the pseudo-correction in the pre-processing are corrections depending on the plane sensor 25, the correction data searched from the sensor ID number is used. Offset data collected before and after exposure may be used. Also,
When the X-ray imaging apparatuses 41 have the same characteristics, it is not necessary to collect the correction data individually. The X-ray imaging apparatuses 41 may be connected to each other via a network (not shown) or the like, and may be copied and used. is there.

FIG. 4 shows the position information of the patient photographed by the visible light camera 45. As described above, the plane sensor 25 is used so as to overlay the image from above the patient.
Is displayed on the display device 48. Display device 48
In, the controller 49 can switch between the X-ray image and the sensor position display.

As described above, there are a plurality of digital imaging tables 21 in a hospital, and each of them has a plurality of X-ray imaging apparatuses 4.
In the case where the image pickup device 41 is used by being individually connected to the
In some cases, correction data may be collected for each imaging device 41 in the case where characteristics such as X-ray irradiation timing and wavelength are different, or in order to cancel a difference in printing characteristics when a moving grid (not shown) is added. .

[0016]

As described above, the digital imaging table according to the present invention has a semiconductor, a flat sensor, and a position detecting means arranged therein to simplify the X-ray imaging operation and to individually operate the plurality of X-ray imaging apparatuses. By enabling connection, operation in a hospital can be facilitated.

[Brief description of the drawings]

FIG. 1 is a plan view of a digital imaging stand.

FIG. 2 is a side view of the digital photographing table.

FIG. 3 is a schematic diagram in which a digital imaging table is connected to an X-ray imaging apparatus.

FIG. 4 is a plan view of the display device.

FIG. 5 is a side view of a conventional imaging table.

FIG. 6 is a side view of a conventional imaging table.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Digital imaging stand 25 Flat sensor 26 Rail 27 Position detection means 28 Moving means 29 Top plate 30 Communication means 31 Cable 41 X-ray imaging device 44 Electromagnetic wave transmitter 45 Visible light camera 46 X-ray generation device 47 Image processing device 48 Display device

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Kazuhiro Matsumoto, Inventor 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc. (72) Inventor Junichi Yamayoshi 3- 30-2 Shimomaruko, Ota-ku, Tokyo Canon Incorporated F term (reference) 4C093 AA16 CA15 CA17 CA32 EB13 EB17 EB24 EC52 ED02 FC19 FF08 FF09

Claims (8)

[Claims] 1. A top plate means that easily transmits X-rays, a rail means installed in parallel with the top plate means, a semiconductor flat sensor moving through the rail means, and the rail of the flat sensor. And a position detecting means for detecting a positional relationship of the digital photographing table. 2. The rail of the flat sensor used in connection with an X-ray generation device, an image capturing device, a display device, and an imaging device having an electromagnetic wave transmitter for distance measurement attached to the image capturing device. 2. The digital imaging stand according to claim 1, wherein an upper position is displayed on the display means. 3. An image capturing apparatus having an X-ray generating means and an image capturing means for use in connection with the apparatus, and for adjusting the timing of X-ray exposure and image data collection of the plane sensor with the image capturing apparatus. 2. The digital photographing table according to claim 1, further comprising: a synchronization unit. 4. The digital imaging table according to claim 1, wherein the digital imaging table is used by being connected to an imaging device having an X-ray generating unit, an image capturing unit, and a power supply unit, and supplying power from the imaging unit. 5. The digital imaging table according to claim 1, wherein the digital imaging table is used by being connected to an imaging device having an X-ray generating means and an image capturing means, and transferring a digital signal from the flat sensor to the image capturing means. . 6. An imaging table identification number which is used in connection with an imaging apparatus having an X-ray generation means, an image capturing means, and an image processing means, and receives data to be corrected by the image processing means from the flat sensor. The digital photographing table according to claim 1, which is selected by: 7. The digital camera according to claim 1, further comprising a moving unit that is used in connection with an imaging device having an X-ray generating unit and an image capturing unit, and that can be moved independently of the imaging device. Shooting stand. 8. The digital imaging table according to claim 1, wherein an X-ray imaging image plane of the flat sensor is rectangular and has a size of 14 inches × 17 inches or more.