The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 2014
Filed:
Sep. 19, 2012
Hari Sundar, Princeton Junction, NJ (US);
Yang Gao, Princeton Junction, NJ (US);
Hari Sundar, Princeton Junction, NJ (US);
Yang Gao, Princeton Junction, NJ (US);
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method for tracking coronary artery motion includes constructing () a centerline model of a vascular structure in a base phase image in a sequence of 2D images of coronary arteries acquired over a cardiac phase, computing (), for each pixel in a region-of-interest in each subsequent image, a velocity vector that represent a change in position between the subsequent image and base phase image, calculating () positions of control points in each phase using the velocity vectors, and applying () PCA to a P×2N data matrix Xconstructed from position vectors (x, y) of N centerline control points for P phases to identify d eigenvectors corresponding to the largest eigenvalues of XXto obtain a d-dimensional linear motion model {circumflex over (α)}, in which a centerline model for a new image at phase p+1 is estimated by adding {circumflex over (α)}to each centerline control point of a previous frame at phase p.