Patent ID: 7264397
Filing Date: 2007-09-04
Classification: A61B

Abstract:
1. A method for determining a position of an x-ray source relative to an x-ray image detector in an x-ray imaging system, comprising the steps of: introducing a reference structure into a beam path of x-rays between an x-ray source and an x-ray image detector, at a known position relative to the x-ray source; acquiring an x-ray image with said x-ray image detector in which said reference structure is mapped; automatically electronically determining a position of the map of the reference structure in the x-ray image; automatically electronically determining a position of the reference structure relative to the x-ray image detector from the position of the map of the reference structure in the x-ray image; automatically electronically determining a position of the x-ray source relative to the x-ray image detector from the position of the reference structure relative to the x-ray image detector and the position of the reference structure relative to the x-ray source; irradiating an examination subject with x-rays emitted by said x-ray source and detecting attenuation data, representing attenuation of said x-rays by said examination subject, with said x-ray image detector, and generating an image of the examination subject using said attenuation data and the automatically electronically determined position of the x-ray source relative to the x-ray image detector.