Patent ID: 7734009
Filing Date: 2010-06-08
Classification: A61B,G06T

Abstract:
1. An angiographic x-ray diagnostic device providing rotation angiography for performing an angiographic treatment procedure on a patient and for generating diagnostic images of soft tissue at sufficient resolution for diagnosis as to render unnecessary separate generation of a CT examination, the device comprising: an open C-arm an x-ray emitter mounted on the C-arm and configured to be moved along a circular path around a patient located on a patient support table; an image detector unit mounted on the C-arm and configured to be moved along the circular path, the image detector facing the x-ray emitter; a digital image system for recording a plurality of projection images by rotation angiography; an image processing unit for reconstructing a three-dimensional volume image from the projection images, wherein the combination of the open C-arm, the x-ray emitter, the image detector unit, the digital image system and the image processing unit collectively provide an angiographic x-ray imaging function to enable provision of the angiographic treatment procedure; and a correction unit connected to the digital image system for correcting unwanted physical effects or inadequacies related to the digital image system, the correction unit configured to enhance recording of soft tissue such that an image quality of the projection images recorded from the soft tissue and the corresponding three-dimensional volume image is improved; wherein the correction unit is configured to execute a correction method chosen from the group consisting of a truncation correction, a scatter correction, a blooming correction, a ring artifact correction, a correction of movements of the patient, and a correction of organ movements of the patient such that with operation of the correction unit the image processing unit provides diagnostic images of soft tissue with sufficient resolution, relative to that achievable with a CT system of the type in which an x-ray emitter and an x-ray detector rotate in a closed annular gantry, that examination with such a CT system is not needed to perform the diagnosis as needed for the angiographic treatment procedure.