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Joint Segmentation-Registration of Organs Using Geometric Models

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2 Author(s)
Ayvaci, A. ; Rensselaer Polytech. Inst., Troy ; Freedman, D.

In this paper, we present a novel method for the segmentation of the organs found in CT and MR images. The proposed algorithm utilizes the shape model of the target organ to gain robustness in the case where the objective organ is surrounded by other organs or tissue with the similar intensity profile. The algorithm labels the image based on the graph-cuts technique and incorporates the shape prior using a technique based on level-sets. The method requires proper registration of the shape template for an accurate segmentation, and we propose a unified registration-segmentation framework to solve this problem. Furthermore, to reduce the computational cost, the algorithm is designed to run on watershed regions instead of voxels. The accuracy of the algorithm is shown on the medical examples.

Published in:

Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE

Date of Conference:

22-26 Aug. 2007