Patent ID: 7783096
Filing Date: 2010-08-24
Classification: A61B,G01N,G06T

Abstract:
1. A method comprising a plurality of activities comprising: receiving a first image of a predetermined physiological structure of a patient, said first image originated from an X-ray device operated at a first energy spectrum, said first image originated during a first time interval; receiving a second image of said predetermined physiological structure of said patient, said second image originated from said X-ray device operated at a second energy spectrum, said second image originated during a second time interval, said second time interval distinct from said first time interval; automatically determining an initial estimate of a movement of said patient in said second time interval relative to said first time interval via a corner matching based registration, said corner matching based registration determined via: automatically determining an improved estimate of said movement of said patient in said second time interval relative to said first time interval based upon said initial estimate of said movement, said improved estimate obtained via an iterative hierarchical structured intensity comparison between said first Gaussian pyramid and said second Gaussian pyramid, said iterative hierarchical structured intensity comparison comprising, from a lowest resolution layer to a highest resolution layer of said first Gaussian pyramid and said second Gaussian pyramid: achieving subpixel accuracy by searching within said neighborhood associated with each control point by utilizing a resolution level step size smaller than approximately one pixel on said highest resolution layer; based on said estimated optimal deformation for each control point, automatically estimating a soft-tissue layer image and a bone layer image of said predetermined physiological structures of said patient; and automatically rendering said estimated soft-tissue layer image and said estimated bone layer image of said predetermined physiological structures of said patient.