公开(公告)号：DE50201494D1

公开(公告)日：2004-12-16

申请号：DE50201494

申请日：2002-05-28

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： BRAES HENNING ,  SCHMITZ DR ,  REITER HARALD

IPC: G01N23/04 ,  A61B6/00 ,  A61B6/06 ,  G01T1/00 ,  H05G1/64

Abstract: Method in which a radiograph (7), obtained by transmission or X-radiation through a patient (4), imaging with a detector (5) and processing with a controller (6), is divided into image regions (A-I). After separation an iterative process is applied whereby the lightest of the remaining regions is selected in each step if its density or gray value indicates that there is direct radiation (2b) incident on it. Finally at the end of the iteration an area of interest remains that is used by the controller to calculate an optimum exposure. The invention also relates to a corresponding X-ray device.