2033
Analysis of high-resolution 3T diffusion MRI data obtained with minimal CUSP acquisition scheme from a Non-Human Primate
Alex Colin Valcourt Caron1, Amir Shmuel2, Ilana R. Leppert2, and Maxime Descoteaux1
1Université de Sherbrooke, Sherbrooke, QC, Canada, 2Montreal Neurological Institute, McGill University, Montreal, QC, Canada
We propose a processing pipeline allowing for the analysis of diffusion data using DTI, CSD, and DIAMOND reconstruction, tailored for the analysis of data from the macaque brain. We present results obtained by applying the pipeline to a dataset acquired with a minimal CUSP 90 directions scheme.
RGB maps from the multiple reconstruction methods. Note the higher contrasts present in the DIAMOND map, from which the effect of free water is removed, leading to higher intensities of the underlying FA, and thus higher contrasts.
Peaks extracted from (A) DTI, (B) fODF, and (C) DIAMOND. Whereas DTI cannot reconstruct the multi-peak populations, two-way crossings were successfully extracted from both fODF and DIAMOND. The latter presents a greater number of crossings.