X=ray examination or diagnostic device with two adjustable apertures

摘要

The device has an x-ray emitter (1) to generate an x-ray beam bundle which passes through a first aperture arrangement with adjustable aperture plates (10) to an examination region. After passing through a second aperture arrangement (20) with adjustable plates (21,23) the beam bundle is incident on a unit (5) to display an x-ray recording. The aperture plates of at least one of the two aperture arrangements (10,20) are provided with markings (25). These are shown in the x-ray recording at least when the radiation field from the first aperture arrangement (10) deviates from that of the second (20).