Patent Number: 052609847
Section: claims

1. An X-ray diagnostics installation comprising: An X-ray tube which generates an X-ray beam in a beam path;  A primary radiation diaphragm disposed in said beam path and having at least one moveable element which can assume different orientations; and  Control means for positioning said moveable element is said beam path including user-manipulable setting means, consisting of an operating lever having a free end with a cap and said operating lever being pivotable in all directions and rotatable by said cap, for operating said control means for causing said moveable element to execute a motion corresponding to motion of the second means for all orientations of said moveable element. 2. An x-ray diagnostics installation as claimed in 1 further comprising means for generating a video image of an examination subject disposed in said x-ray beam, and means, upon actuation of said setting means, for mixing the position of an evaluation dominant into said video image. 3. An x-ray diagnostics installation as claimed in claim 1 wherein said setting means is rotatable for effecting a rotary motion of said movable element. 4. An x-ray diagnostics installation as claimed in claim 1 wherein said setting means is pivotable for effecting a movement of said movable element in a direction corresponding to the direction of the pivot. 5. An x-ray diagnostics installation as claimed in claim 1 further comprising means for displaying a video image of an examination subject disposed in said beam path, and means for displaying said movable element of said primary radiation diaphragm in said video image so that movement of said movable element in said video image coincides with movement of said setting means. 6. An x-ray diagnostics installation as claimed in claim 5 further comprising processing means, connected to said control means, for, upon actuation of said setting means generating a line corresponding to a contour of said movable element mixed in said video image. 7. An x-ray diagnostics installation as claimed in claim 1 further comprising high-voltage means for feeding said x-ray tube, and further comprising means for reducing the dose of said x-ray tube upon actuation of said setting means. 8. An x-ray diagnostics installation as claimed in claim 1 wherein said operating lever is mounted so as to be pressable and pullable. 9. An x-ray diagnostics installation as claimed in claim 8 further comprising an optics system in video chain for generating a visible image of an examination subject disposed in said beam path, said optics system including an iris diaphragm, and wherein said iris diaphragm is connected to said control means so that pressing and pulling of said operating lever respectively opens and closes said iris diaphragm.