Patent ID: 6801643
Filing Date: 2004-10-05
Classification: G06T,G16H

Abstract:
A system for determining patient-specific anatomical dimensions using appropriate scanned 2-D image data, said system comprising:means for assembling an appropriate set of scanned 2-D images into a 3-D database; means for extracting a computer model of a patient-specific anatomical structure from the information contained in said 3-D database; means for defining a plurality of 2-D image planes parallel to and spaced from one another and transversely intersecting a set of 3-D locations corresponding to said computer model of said patient-specific anatomical structure, each of said 2-D image planes including a set of co-ordinates located within said patient-specific anatomical structure; means for calculating a centroid path in said computer model of the patient-specific anatomical structure, said centroid path being determined by averaging said set of co-ordinates located with each of said 2-D image planes between said first and said second ones of said plurality of image planes so as to define a centroid for the portion of said computer model of the patient-specific anatomical structure contained in that particular 2-D image plane, and applying a curve-fitting algorithm to said centroids so as to supply data for any portions of said set of 3-D locations corresponding to said patient-specific anatomical structure which may lie between said 2-D image planes, whereby to create resulting space curves; and means for calculating desired patient-specific anatomical dimensions from said resulting space curves.