Registration-Based Morphing of Active Contours for Segmentation of CT Scans

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2005, 2(1): 79-96. doi: 10.3934/mbe.2005.2.79

Registration-Based Morphing of Active Contours for Segmentation of CT Scans

1.	Center for Turbulence Research, Stanford University, Stanford, CA 94305, United States
2.	Department of Mathematics, Stanford University, Stanford, CA 94305-2125, United States

Received July 2004 Revised August 2004 Published November 2004

Abstract
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We present a new algorithm for segmenting organs in CT scans for radiotherapy treatment planning. Given a contour of an organ that is segmented in one image, our algorithm proceeds to segment contours that identify the same organ in the consecutive images. Our technique combines partial differential equations-based morphing active contours with algorithms for joint segmentation and registration. The coupling between these different techniques is done in order to deal with the complexity of segmenting ''real'' images, where boundaries are not always well defined, and the initial contour is not an isophote of the image.

Keywords: CT scans, registration, morphing, segmentation, active contours..

Mathematics Subject Classification: 92C55, 92C5.

Citation: Yuan-Nan Young, Doron Levy. Registration-Based Morphing of Active Contours for Segmentation of CT Scans. Mathematical Biosciences & Engineering, 2005, 2 (1) : 79-96. doi: 10.3934/mbe.2005.2.79

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American Institute of Mathematical Sciences