JPH0446728Y2 - - Google Patents

Description

[Detailed explanation of the idea] (b) Industrial application fields The invention is used in the field of X-ray photography.

The present invention relates to a lower limb angio-X-ray imaging device applied to lower limb circulation imaging.

(B) Prior Art In addition to normal fluoroscopic imaging, an X-ray fluoroscopic imaging table is sometimes used in combination with a continuous imaging device for circulatory organ imaging such as lower extremity angiography.

However, it is known that in this case, in order to provide functions such as film exchange, it is necessary to combine both a quick-shot photographing device and a continuous photographing device.

(c) Problems that the invention aims to solve If these two devices are combined, there will be restrictions on the structure and dimensions of the X-ray fluoroscopy table, and the device configuration will become complicated and large-scale. This will increase costs.

An object of the present invention is to provide a lower extremity angiography X-ray imaging device that can perform lower extremity angiography using a quick-shot imaging device without using a dedicated continuous imaging device.

(d) Means for solving the problem The above-mentioned purpose is to provide a quick-shooting device equipped with a means for feeding a single film in small portions and sequentially dividing the film into continuous shots, and a photo-taking platform that moves in steps corresponding to the feed. Three steps: plate, X-ray exposure, step movement of the top plate, and step feed of the film in the snapshot camera.
This is achieved by providing a lower extremity angiocontroller having timing control means for interlocking the patient in a timely manner.

(E) Effect The part of the lower limb to be photographed has an elongated rectangular shape, so if the part to be photographed is continuously photographed with one piece of film each time, the film will be wasted, and changing the film every time will be a big hassle. becomes.

From this point of view, a quick-shooting device is equipped with a quick-shooting device so that continuous shooting can be performed on a single film, and the top plate is moved in steps for the continuous shooting position, and the timing of both is controlled by a lower extremity angio controller. let it happen.

(F) Embodiments A preferred embodiment of the present invention will be explained based on the drawings.

FIG. 1 is a front view of the main part showing one embodiment of the invention, with an added operational system.

FIG. 4 is a front view of main parts of a conventional example, in which a continuous photographing device 18 is combined. As shown in this figure, a positioning means using a tilting or swinging mechanism of the X-ray tube device 10 is required.

In the embodiment of the present invention shown in FIG. 1, a quick-shooting device 16 having a divided continuous shooting function and an X-ray tube device 10 are mounted on a fluoroscopic imaging table main body 40 in a form that can slide in the longitudinal direction of the top plate 14 and facing each other. Arranged.

Although not shown in the figure, the top plate 14 can be moved in steps by a step drive mechanism in addition to normal longitudinal movement.

FIG. 2 shows the film dispensing and feeding mode in the quick-shot photographing device 16 as seen from the X-ray tube device side.

In the frame 16a of the quick-shot photographing device 16, the film 20 is placed between the standby position 20a and the photographing positions 20b, 20.
c and 20d.

In normal quick-shot shooting, the film is moved from the waiting position 20a to one part of the divided shooting by a shooting start command.
After moving to the imaging position 20b for the first image, X-rays are irradiated, and the camera returns to the waiting position 20a again. Then, the second and third images are sequentially photographed in accordance with the photographing start command.

In contrast, in the case of divided continuous shooting according to the present invention, after moving from the waiting position 20a to the shooting position 20b for the first divided photograph and receiving X-ray exposure, the next Divided shooting positions 20c and 20d
The control is such that the camera moves to and performs continuous segmented shooting. In this case, mask plates and the like for divisional imaging are omitted from illustration. Note that 14a indicates a part of the top plate.

FIG. 3 is a time chart showing an example of the timing of each operation performed by the lower limb angiocontroller 30.

After setting the top plate 14 at the start position and moving the film 20 to the position for the first image of divided imaging, the X-ray high voltage is After the X-ray radiation from the device 22, the top plate is moved 2.
4 and divisional movement 26 are issued from the lower extremity angiocontroller, and continuous divisional imaging corresponding to each step is executed.

Note that, in reality, imaging is performed prior to fluoroscopy, and is continuous with fluoroscopy, but the timing of fluoroscopy is not shown because it is not the gist of the present invention.

In the present invention, since the film is divided and used, it is applicable to photographing narrow parts such as the lower limbs.

Further, the present invention can be applied to either a method using a cassette or a method using a cassette-less method.

Furthermore, instead of the top plate, the quick-shooting device and the X-ray tube device may be moved together in steps.

(G) Effects According to the present invention, continuous imaging such as lower limb angiography can be performed without using a dedicated continuous imaging device, saving film, and continuous imaging equipment such as tilting or swinging of the X-ray tube device is possible. It is economical as there is no need for a mechanism to combine it with the fluoroscopic imaging table, and continuous imaging can be performed regardless of the tilting angle of the fluoroscopic imaging table.

[Brief explanation of drawings]

FIG. 1 is a front view of the main parts of an embodiment of the present invention with an added operational system; FIG. 2 is a diagram illustrating a film dispensing mode according to the present invention; FIG. 3 is a diagram illustrating timing according to the present invention; The figure is a front view of the main part of a conventional example. 10 is an X-ray tube device, 12 is a subject, 14 is a top plate, 16 is a snapshot photographing device, 20 is a film, 24
Reference numeral 26 indicates a top plate drive unit, 26 a film moving unit for quick-segment photography, and 30 a lower limb angio controller.

Claims (1)

[Scope of utility model registration request] A quick-shot photographing device equipped with a means for feeding a single film in small batches and sequentially dividing and taking pictures; a photographing table top that moves in steps corresponding to the feeding; A lower extremity angio-X-ray imaging apparatus, comprising: a lower extremity angio controller having a timing control means for timely interlocking the three steps of film step feeding within the apparatus.