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专利名称：Method for segmenting medical images and
detecting surface anomalies in anatomicalstructures
发明人：Ronald M. Summers,Scott Selbie,James D.
Malley,Lynne M. Pusanik
申请号：US09136136申请日：19980818公开号：US06246784B1公开日：20010612
专利附图：
摘要：A region growing method segments three-dimensional image data of an
anatomical structure using a tortuous path length limit to constrain voxel growth. Thepath length limit constrains the number of successive generations of voxel growth from aseed point to prevent leakage of voxels outside the boundary of the anatomicalstructure. Once segmented, a process for detecting surface anomalies performs acurvature analysis on a computer model of the surface of the structure. This processdetects surface anomalies automatically by traversing the vertices in the surface model,computing partial derivatives of the surface at the vertices, and computing curvaturecharacteristics from the partial derivatives. To identify possible anomalies, the processcompares the curvature characteristics with predetermined curvature characteristics ofanomalies and classifies the vertices. The process further refines potential anomalies bysegmenting neighboring vertices that are classified as being part of an anomaly usingcurvature characteristics. Finally, the process colorizes the anomalies and computes acamera position and direction for each one to assist the user in viewing 2D renderings ofthe computer model.
申请人：THE UNITED STATES OF AMERICA AS REPRESENTED BY THE DEPARTMENT OFHEALTH AND HUMAN SERVICES
代理机构：Klarquist Sparkman Campbell Leigh & Whinston, LLP
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