Patent ID: 7742557
Filing Date: 2010-06-22
Classification: A61B,G01N,G06T

Abstract:
1. A method for generating a 3D reconstruction image of a patient, comprising: providing a C-arm X-ray unit on which mounted an X-ray source and an X-ray detector; capturing a first projection of the patient by the C-arm X-ray unit from a first relative positioning of the X-ray source and the X-ray detector; capturing a second projection of the patient by the C-arm X-ray unit from a second relative positioning of the X-ray source and the X-ray detector; mapping a first projection data of the first projection onto a virtual detector; mapping a second projection data of the second projection onto the virtual detector; filtering the first mapping data in such a way as to generate mapping data that originates from both the first projection data and the second projection data; filtering the second projection data in such a way as to generate mapping data that originates from both the first projection data and the second projection data; generating a modified first projection by a reversal of the filtered first mapping data; generating a modified second projection by a reversal of the filtered second mapping data; and generating the 3D reconstruction image using a filtered back projection procedure based on the modified first projection and the modified second projection independently.