Combining Mesh, Volume, and Streamline Representations for Polyp Detection in CT Colonography

CT colonography is a screening technique for adenomatous colorectal polyps, which are important precursors to colon cancer. Computer aided detection (CAD) systems are developed to assist radiologists. We present a CAD system that substantially reduces false positives while keeping the sensitivity high. Hereto, we combine protrusion measures derived from the solution of a non-linear partial differential equation (PDE) applied to both an explicit mesh and an implicit volumetric representation of the colon wall. The shape of the protruding elements is efficiently described via a technique from data visualization based on curvature streamlines. A lowcomplex pattern recognition system based on an intuitive feature from the aforementioned representations improves per

• Type: Conference
• Year: 2009
• Where: ISBI
• Authors: Vincent Frans van Ravesteijn, Lingxiao Zhao, Charl P. Botha, Frits H. Post, Frans M. Vos, Lucas J. van Vliet
• Keywords: Adenomatous Colorectal Polyps, Computer Aided Detection, Implicit Volumetric Representation, ISBI 2009, Medical Imaging