DE7001120U - EQUIPMENT FOR THE PRODUCTION OF ANGIOGRAPHICAL X-RAY PHOTOS. - Google Patents

Description

Equipment for the production of angiographic x-rays

The innovation relates to a device for production of angiographic x-rays with a patient bed as well as an X-ray tracer on one side and an image recording device on the other side of the patient bed.

A known device for the production of angiographic x-ray recordings is equipped with a stationary patient bed, under which a film surface, which extends over the part of the patient's body to be recorded, is arranged. To make the recordings, the X-ray tube is gradually brought into recording positions in which adjacent image fields on the film strip are directly adjacent to one another. An aperture device ensures that im- ... cv only the section of the film strip on which a picture is to be taken is exposed to the X-rays lie in a recording field only appear fully in the recording if they are fully filled with contrast medium. The course of the filling process over time cannot therefore be followed in the recordings. Furthermore, a relatively long injection time is required with this device with a relatively high consumption of contrast medium.

This means that the vessels are optimally filled for hurried recordings is ensured.

The task of the innovation is to establish a facility of the aforementioned To create kind that avoids the disadvantages of the known device.

This object is now achieved in that the image on tilting device a film changer is used that the X-ray tracer and the film changer are coupled adjusted to one another and the unit thus formed is fixed relative to the stationary one Patient bed is operationally adjustable such that the central beam of the X-ray radiation in the direction of the Moving the patient table. In each recording position, a series of photos can be made so that the course of the Contrast medium front can be clearly identified in the recordings.

It is indeed a facility for making angiographies X-ray recordings are known in which the film changer and the X-ray tracer are fixed and the patient inventory is displaceable, so that in each exposure position of the patient the entering and exiting the receiving field Contrast medium front can be documented by a series of images. Because of the necessary postponement of the patient bed With the patient, however, motion blur in the recordings can occur, caused by the patient's body mass oscillating if the breaks between the Deceleration of the patient bed and the beginning of the first admission appear. Furthermore, the patient can be endangered by the unavoidable vibrations. There is a single risk e.g. in aorto-arteriography, bsi the injection cannula for the contrast medium in general during manufacture the recordings remain in the aorta. In connection with the vibrations, an aortic rupture can occur.

Further details of the innovation can be found in the following Description of three exemplary embodiments shown in the drawing.

All embodiments shown contain a horizontal lying patient bed 1, one below the patient bed 1 in the longitudinal direction by means of rollers on the floor 4 movably guided filmweohsler 2 and an X-ray scanner 3 # the arranged above the patient bed 1 an X-ray tube arranged in a protective housing and a primary radiation diaphragm.

In the embodiment shown in Figure 1 is the Film changer 2 by means of a rod 5 rigidly connected to the X-ray transmitter 3 connected. The rod 5 is at its upper end by means of a guide carriage 6 on the ceiling 7 in the longitudinal direction of the Patient bed 1 slidably guided. The central ray of the X-ray tracer 3 is in the middle of the Aufnahraefeldes aligned on the film changer 2. This orientation remains because of the rigid connection between the film changer 2 and the X-ray scanner 3 received in each position of the unit comprising these parts. For the production of angiographic recordings this unit gradually adjusted by hand or automatically the individual recording positions and in these recording positions using the film changer 2 made a series of photos.

In the exemplary embodiment shown in FIG. 2, the X-ray scanner 3 hangs from one on the ceiling 7 in the longitudinal direction the patient bed 1 displaceable carriage 8. The carriage 8 and the film changer 2 are displaced by means of a built-in electric motor. These two electric motors are controlled by a synchronization device 9 so that during the process of the image changer 2 of the carriage 8 with the X-ray tracer 3 is adjusted by the same amount at the same time. In the case of the

The X-ray tracer J is thus carried along with the image changer 2, see above that also in this exemplary embodiment in every recording position of the film changer 2 the central beam of the X-ray emitter J on the center of the recording field is directed towards the film changer 2.

In the embodiment shown in Figure J, the X-ray tracer J to a support 10 µm attached to the ceiling 7 an axis 11 extending transversely to the patient bed 1 and perpendicular to the central beam 14 is mounted so that it can be pivoted. The pivoting of the X-ray source J is carried out by an electric motor 12 which is controlled by a synchronization device IJ will. The synchronization of the electric motor 12 and an electric motor that moves the film changer 2 is carried out by the synchronization device IJ in such a way that when the recording position of the film changer 2 changes, the X-ray tracer J is pivoted about the axis 11 by the electric motor 12 so that the central beam 14 of the X-ray radiation hits the center of the recording field remains aligned on the film changer 2. This is illustrated in FIG. J by the positions of the film changer 2 and the X-ray source J shown in dash-dotted lines.

The synchronization devices 9 and IJ can, for example Be tracking control devices. The coupling of the movement of the Filmweohslers 2 with the X-ray tracer J can also be used in the exemplary embodiments shown in FIGS electric wave.

In the devices shown, there is no shifting of the patient bed, so that there are no vibrations and thus The images are out of focus and the patient is not endangered by vibrations. In every shooting position a series of exposures can be made of the blood vessels, so that the time course of the filling process of the vessels can be followed well in the recordings. It is therefore not

It is necessary that the vessels lying in the exposure field are completely filled with contrast medium while the exposure is being made are. The device described thus combines the advantages of the known devices for manufacturing mentioned at the outset of angiographies without having their disadvantages.

70Θ112024.6.71

Claims (2)

(# K Ψ B · Schute claims 1. Facility for the production of angiographic X-rays with a patient bed and an X-ray tracer on one side and a picture tilting device the other side of the patient bed, thereby characterized in that a film changer is used as the image recording device, that the X-ray tracer (5) and the film changer (2) are coupled adjusted to one another and the unit thus formed is relative to the stationary patient bed (1) is operationally adjustable in such a way that the central beam of the X-ray radiation is in the direction of the patient bed emotional. 2. Device according to claim 1, characterized in that that the film changer and the X-ray tracer each have an electric motor are movable in the longitudinal direction of the patient bed and the two electric motors synchronization means (9) for a simultaneous and equally large adjustment of the film changer and the X-rays directed with its central beam onto the recording field are assigned (electrical wave). 2. Device according to claim 1, characterized gekennselehnet, that the film changer can be moved by an electric motor in the longitudinal direction of the patient bed and the X-ray tube can be moved transversely to the patient bed and perpendicular to the central beam (It-) extending axis (11) is pivotable by an electric motor and the two electric motors synchronization means (13) for a simultaneous Adjustment of the film changer and pivoting of the X-ray tube assigned in the sense of an alignment of the central beam to the recording field in every position of the film changer are.