JPS6146145B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an X-ray diagnostic apparatus with an improved body position imaging device.

While observing the X-ray fluoroscopic image of the subject's observation area on one of the X-ray diagnostic devices, when the desired fluoroscopic image is obtained, the subshot imaging device is activated to take the image and perform the diagnosis. There is an X-ray fluoroscopy table for obtaining data.

This fluoroscopic imaging table is constructed by attaching an X-ray fluoroscopy device and a spot shot device to a bed top that can be raised up and down.For example, in a stomach diagnostic device, a contrast medium is administered to a subject, The contrast agent is attached to the desired gastric wall surface so that the condition of the gastric wall surface can be clearly seen, and the image is taken. However, since the contrast agent is fluid, the patient's body position is adjusted to stand up, inverted, or normal. Photographs must be taken in various positions such as lying down and lying down. Therefore, accurate diagnosis cannot be made unless it is known which of these positions the photograph is in.

That is, as shown in FIG. 1, the X-ray fluoroscopic imaging table includes a bed top plate 2 which is rotatably supported at one end by a support base 1 fixed to the floor, and a bed top plate 2 with a bed top plate 2 extending in the longitudinal direction. Support arm 3 movably attached along
and an X-ray tube 4 held by this support arm 3 disposed inside the bed top plate 2, and an X-ray tube 4 held by the support arm 3 disposed inside the bed top plate 2, and the support arm 4 facing the X-ray tube 4 through the top plate portion 2a of the bed top plate 2. It consists of a spot shot photographing device 5 held at the top of the bed and an X-ray television camera 6 placed behind it, and the bed top 2 is rotated to tilt the bed top 2 to a desired angle. As a result, the state of the organs of the subject on the bed top 2 changes depending on the angle of inclination thereof. Therefore, the photograph taken depends on the state in which it was taken (i.e., the position in which it was taken)
If you don't know, you may not be able to tell whether something is normal or not, and you won't be able to make an accurate diagnosis.

Therefore, in such an apparatus, a photographing position imprinting device is provided for imprinting the photographing position on a part of the film so that the state at the time of photographing can be known at a later date.

This photographic body position imprinting device is shown in FIG. In the figure, 5 is the aforementioned spot shot photographing device;
6a is an image intensifier of the X-ray television camera device. 501 is a housing of the spot shot photographing device 5, and this housing 501 is provided with a small chamber 502 in a part thereof, and this small chamber 502 is provided with a small chamber 502 in a part thereof.
A hole 503 is bored at an appropriate position in the partition wall 501a between the camera and the housing 501, and a lens 504 is attached thereto. A disk-shaped angle meter 505 is disposed in the small chamber 502 facing the lens 504, and this angle meter 505 is connected to an angle detector (not shown) that detects the angle of inclination of the bed top 2. It is connected to a synchro receiver 506 which obtains an angle detection signal and rotates the angle meter 505 by an angle corresponding to the detected angle. The angle meter 505 has a symbol mark showing the layout of the X-ray tube and spot shot imaging device on its surface, and the synchronizer receiver 506 rotates the angle meter 505 by an angle corresponding to the inclination angle of the bed top. By moving, the position of the displayed symbol mark moves by the amount of rotation, so the angle of inclination can be determined by comparing the state of the symbol mark with respect to when the bed top is horizontal. 507 is this angle meter 5
05, and this light source 50
By illuminating the angle meter 505 at step 7, the symbol mark of the angle meter 505 is projected onto the housing 501 side through the lens 504.

508 is an X-ray film that is sandwiched between intensifying screens 509 and 509' and housed in the housing 501, and near the X-ray film 508 is the symbol mark projected through the lens 504. A mirror 510 is provided for reflecting and projecting the image onto a part of the X-ray film 508. X-ray film 50
8, the intensifying screens 509 and 509' are removed from the position where the reflected projection image of the mirror 510 is formed.

According to this configuration, the angle meter 505 is rotated in accordance with the inclination angle of the bed top plate, and the symbol mark is inclined in accordance with the inclination angle, so that the angle is determined by the light source 507 as shown in FIG. A total of 505 symbol mark display surfaces are irradiated and the image is transferred to mirror 5.
When projected onto the X-ray film 508, it is reflected by the mirror 510 and projected onto the X-ray film 508. Therefore, when the X-ray film 508 is developed, the symbol mark S also remains as an image as shown in FIGS. 4a and 4b, and the body position at the time of imaging can be determined from the state of the symbol mark S.

However, in the case of the above configuration, the lens 504
Since a mirror 510 is used, the focal length of the lens 504 and the angle of the mirror 510 must be adjusted in order to clearly print the symbol mark, which requires extremely advanced technology and requires assembly. difficult. Therefore, adjustment takes time and effort, leading to an increase in price.

The present invention has been made in view of the above circumstances, and uses an optical fiber member instead of an optical system such as a lens and a mirror, and uses the optical fiber member to guide an image, thereby reducing the trouble of adjustment etc. An object of the present invention is to provide an X-ray diagnostic apparatus having an imaging body position imprinting device.

5 to 7 regarding one embodiment of the present invention.
This will be explained with reference to the figures. FIG. 5 is a diagram showing the configuration of this device, in which 5 is a pot shot photographing device, 6a is the image intensifier described above, 501 is the same casing as described above, 502 is the same small chamber as described above, and 501a is the same as described above. 503 is the same hole as described above, 506 is the same synchronized receiver as described above placed in the small chamber 502, 507 is the small chamber 5
02 is a light source provided inside, 508 is an intensifying screen 50
9,509' and placed inside the housing 501. 60 is the synchronized receiver 5
06 to display the tilt angle; 70 is a glass fiber that guides the displayed image of the display 60 to the angle display position of the X-ray film 508; this glass fiber 70 is connected to the partition wall 5;
01a, one end thereof is connected to the display 60, and the other end is close to an angle display position provided at a corner of the X-ray film 508 in the housing 501. Placed.
510 is a light shielding wall that prevents light leaking from the light source 507 from directly entering the glass fiber 70.

FIG. 6 shows the structure of the display device 60,
601 is an angle display plate, 602 is a light transmitting plate for transmitting display contents, and the angle display plate 601 has a small hole 601a in a part near the outer periphery of a light-shielding disc.
Also, a small hole 601b with the same diameter as the small hole 601a is formed at a position symmetrical to the center of the disk, and a small hole 601c with the same diameter as the small hole 601b is placed on both sides of the small hole 601b at a predetermined pitch. , 601d are bored respectively. And this angle indicator 60
1 is connected to the synchro receiver 506 with its center serving as the center of rotation. The light transmitting plate 6
02 uses a light-shielding disc, and has small holes 601b, 601c, and
A plurality of through holes 602a are bored so as to have the same pitch as each hole 601d and have the same hole diameter, and are provided facing and close to the angle display plate 601. Then, each through hole 6 of the delivery plate 602
A glass fiber 70 having the same diameter as this small hole is inserted into each of the holes 02a. The other end of these glass fibers 70 is placed close to the imaging position display position of the X-ray film 508. then,
The end of the glass fiber 70 on the X-ray film side is connected to each through hole 602a of the light transmitting plate 602 as shown in FIG.
Arrange them in the order in which they were inserted and arranged in a circular shape (or a ring shape such as an ellipse or square).

According to the above configuration, by illuminating the light from the light source 507 from the synchro receiver side of the angle display plate 601, this light is transmitted through the small hole 601a of the angle display plate 601.
~601d and is irradiated onto the light transmitting plate 602 side. Each through hole 602a of this light transmitting plate 602
Glass fibers 70 that optically connect the light transmitting plate 602 and the X-ray film are inserted in each of the through holes 601a of the angle display plate 601.
Light is incident on the through holes of the light transmitting plate 602 located at positions corresponding to ~601d. Therefore, this incident light propagates within the glass fiber inserted into the through hole and is incident on the X-ray film surface, and the through hole 601a of the angle display plate 601 is exposed on the X-ray film.
A light image in the same state as ~601d is imprinted.

If the angle of the bed top plate is changed, the synchro receiver 506 is driven by the corresponding angle as described above, so the angle display plate 601 is also rotated by the corresponding angle, and the transmitted light of the light transmitting plate 602 is changed. When the position changes, light enters the glass fiber at a position corresponding to the rotated angle of the angle display plate 601, and an optical image of the angle display plate 601 corresponding to the inclination angle of the bed top is projected onto the film. It turns out.

In this way, a synchronized receiver rotates by an angle corresponding to the inclination angle of the bed top, and a hole is drilled at a predetermined position to display the inclination angle of the bed top. A plate-shaped angle display board made of a light-shielding material made of a light-shielding material, and a plurality of holes made of a light-shielding material in which a plurality of holes having approximately the same diameter as the holes are bored at predetermined pitches on the movement line of the holes of the angle display board. a light plate; and a glass fiber arranged approximately circularly in the order in which the holes are arranged, with one end inserted into each hole of the light transmitting plate and the other end approaching a predetermined imprinting position of the X-ray film. , a light source that illuminates the angle display plate, the angle display plate is rotated by an angle corresponding to the inclination angle of the bed top plate, and the light transmitted through the hole of the angle display plate is transmitted to the opposite side of the hole. Since the X-ray film is guided through the glass fiber through the hole in the plate, it is possible to clearly imprint the inclination angle with a simple configuration, and the transmission of the light image is carried out between the transparent plate and the glass. Since this is carried out using fibers, it is possible to provide an X-ray diagnostic apparatus having a body position imprinting device with excellent features such as no need for fine adjustments during assembly and no need for special techniques.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with appropriate modifications within the scope without changing the gist thereof.

[Brief explanation of the drawing]

Figure 1 is a diagram for explaining the X-ray fluoroscopy table;
Fig. 2 is a diagram showing a conventional example of the spot shot device and body position imprinting device, Fig. 3 is a perspective view showing details of the body position imprinting device shown in Fig. 2, and Figs. 4 a and b.
FIG. 5 is a diagram showing an embodiment of the present invention, FIG. 6 is a perspective view showing the structure of the display section, and FIG. The figure is a perspective view showing details of the device of the present invention. 2...Bed top plate, 4...X-ray tube, 5...Spotshot imaging device, 70...Glass fiber, 501...Housing, 502...Small room, 506...
...Synchronized receiver, 507...Light source, 508...
X-ray film, 601... Angle display board, 601a
~601c...hole, 602...light transmitting plate, 602a
...through hole.

Claims (1)

[Claims] 1. In a device that uses a bed top that can be raised up and down and uses an X-ray imaging device installed on the bed top to capture an X-ray fluoroscopic image of a subject on the bed top on an X-ray film, the bed top A device that rotates by an angle corresponding to the inclination angle, an angle display plate made of a light-shielding material that is rotated by this device and has a light transmitting portion at a predetermined position, and a device that rotates by an angle corresponding to the inclination angle, and an angle display plate made of a light-shielding material that is rotated by this device and has a light transmitting portion at a predetermined position, and a device that rotates by an angle corresponding to the inclination angle. One end side is supported at a predetermined interval, and the other end side is arranged at a predetermined position of the X-ray film in accordance with the arrangement order of the light transmitting parts and at an angular position corresponding to the tilting angle of the bed top plate. An X-ray diagnostic apparatus comprising a body position imprinting device comprising an optical fiber member provided and a light source illuminating the angle display plate.