2009 CCB Summer Fellows Presentations - Tue 09/29/09, 3:30 PM, DIVE

Background

Annually, the CCB funds several Summer graduate-student fellowships for multidisciplinary research projects. These 3-month fellowships culminate with presentations that demonstrate the novel mathematical models and the computational tools that result from these research endeavors.

Projects

Brain Representation and Registration Using a Tetrahedral Mesh and Elastic Deformations

• GSR: Carl Lederman
• Summary: MRI data will be represented in three dimensions as a tetrahedral mesh which will allow for physical deformation from one brain into another. The tetrahedron can be made of variable size so that near the boundary, or other areas of interest, a high level of detail can be maintained while interior areas can be made up of larger tetrahedron to allow for greater computational speed. The brain registration can make use of existing LONI software that divides the brain into a few dozen regions. The elastic deformation should enforce that each region in one brain is mapped into the same region in another brain. In the end, this should give a reasonable correspondence between every point in one brain and every point in another brain. (PDF)
• Project Page

Multi-scale Chan-Vese on cortical surfaces for robust sulci/gyri segmentation

• GSR: Rongjie Lai
• Summary: In cortical surface analysis, detecting sulci and gyri is an important problem. People usually use level set function representation or develop a spherical parametrization to segment the mean curvature of a given cortical surface. We are trying to do the segmentation on surface itself without introducing any other additional data and generalizing the split Bregman iteration on surfaces to speed up the computation. Furthermore, by applying the laplacian smoothing , tracking the segmentation results and comparing with the cortical group we known, we can identify the main sulci/gyci of the given cortical surface. (PDF)
• Project Page

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