Exposure control on the basis of a relevant part of an X-ray image

摘要

An X-ray examination apparatus according to the present invention includes an X-ray detector for deriving an image signal from an X-ray image, and an exposure control system for adjustment of the X-ray examination apparatus on the basis of a relevant part of the X-ray image. The exposure control system is arranged to group pixels of the X-ray image in one or more clusters on the basis of their brightness values and to select the relevant part of the X-ray image from the clusters.