Patent ID: 6491430
Filing Date: 2002-12-10
Classification: A61B,G01N,G03B,H04N

Abstract:
A mobile X-ray apparatus comprising:an X-ray system comprising an X-ray source and a planar X-ray detector; a displacement arrangement for displacing said X-ray system relative to an examination subject for picking up a series of 2D projections of said subject online, said X-ray system and said displacement arrangement being susceptible to mechanical instabilities; a computer supplied with said 2D projections for reconstructing at least one 3D image of said subject therefrom; and said displacement arrangement including means for assuring a reproducible displacement movement of said X-ray system so that respective projection geometries required for reconstructing said 3D image are determined offline in a calibration process prior to picking up said series of 2D projections of said subject online.