Tracking of moving targets
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United States of America Patent
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Oct 25, 2016
Grant Date -
Jul 2, 2015
app pub date -
Mar 10, 2015
filing date -
Sep 30, 2004
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Abstract
Treatment targets such as tumors or lesions, located within an anatomical region that undergoes motion (which may be periodic with cycle P) are tracked. A 4D mathematical model may be established for the non-rigid motion and deformation of the anatomical region, from a set of CT or other 3D images. The 4D mathematical model relates the 3D locations of part(s) of the anatomical region with the targets being tracked, as a function of the position in time within P. Using non-rigid image registration between pre-operative and intra-operative images, the position of the target and/or other part(s) of the anatomical region may be determined.
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