Amith J. Kamath1,
Iman Aganj2, 3, Junqian Xu4, Essa S. Yacoub4,
Kamil Ugurbil4, Guillermo Sapiro5, Christophe Lenglet4
1Electrical
and Computer Engineering, University of Minnesota, Minneapolis, MN, United
States; 2Martinos Center for Biomedical Imaging, Massachusetts
General Hospital, Harvard Medical School, Cambridge, MA, United States; 3Electrical
and Computer Engineering, MIT, Cambridge, MA, United States; 4Center
for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN,
United States; 5Electrical and Computer Engineering, Duke
University, Durham, NC, United States
This work elaborates guidelines for sampling schemes to be used with a multi-shell diffusion MRI acquisition. The reconstruction is based on the CSA-ODF model and we use the Camino toolkit to generate synthetic data for simulations. By varying the b-value, Spherical Harmonics order, SNR and number of gradient directions, we conclude with the observation that b-values including 1000, 2000, and a third shell in the range [3000, 6000] s/mm2 shows better reconstructions, and that 200 total gradient directions appear sufficient.
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