G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 23/04 (2006.01) A61B 6/03 (2006.01)
Patent
CA 2042188
RD-19694 DUAL PARALLEL CONE BEAM CIRCULAR SCANNING TRAJECTORIES FOR REDUCED DATA INCOMPLETENESS IN THREE-DIMENSIONAL COMPUTERIZED TOMOGRAPHY Abstract of the Disclosure A configuration of three-dimensional cone beam com- puterized tomography imaging which minimizes the incomplete- ness of the data set acquired, while providing fast data acquisition to minimize motion artifacts. An object within a field of view is scanned, preferably simultaneously, along a pair of circular source scanning trajectories spaced a dis- tance selected to minimize the amount of missing data. A procedure is disclosed for calculating the spacing distance between the scanning trajectories which minimizes the amount of missing data. In one embodiment, a pair of cone beam x- ray sources are employed and a corresponding pair of two- dimensional array detectors. In order to reduce interference caused by x-rays from one source interacting with the detec- tor corresponding to the other source, the cone beam x-ray sources are angularly offset, for example by 90°.
Company General Electric
Craig Wilson And Company
LandOfFree
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