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Non-Local Non-Negative Spherical Deconvolution for Single and Multiple Shell Diffusion MRI

Abstract : In diffusion MRI (dMRI), Spherical Deconvolution (SD) is a category of methods which estimate the fiber Orientation Distribution Function (fODF). Existing SD methods, including the widely used Constrained SD [1], normally have two common limitations: 1) the non-negativity constraint of the fODFs is not satisfied in the continuous sphere; 2) many spurious peaks are detected, especially in the regions with low anisotropy; In [2], we proposed a novel SD method, called Non-Negative SD (NNSD), to avoid these two limitations. NNSD guarantees the non-negativity constraint of fODFs in the continuous sphere S2 , and it is robust to the false positive peaks. In this abstract, we propose Non-Local NNSD (NLNNSD) which considers non-local spatial information and Rician noise in NNSD, and apply it to the testing data in ISBI contest.
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Submitted on : Monday, March 31, 2014 - 4:26:27 AM
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Jian Cheng, Rachid Deriche, Tianzi Jiang, Dinggang Shen, Pew-Thian yap. Non-Local Non-Negative Spherical Deconvolution for Single and Multiple Shell Diffusion MRI. HARDI Reconstruction Challenge, International Symposium on Biomedical Imaging (ISBI), Apr 2013, San Francisco, United States. pp.1. ⟨hal-00967830⟩

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