Fig. 1.
Outline of the proposed method for inter-site dMRI data harmonization and the section numbers where we discuss the related sub-problems. In our pipeline, the reference and the target sites are shown in green and red, respectively. Given the input images represented by their corresponding SH coefficients, we start by extracting a set of RISH features followed by updating the Freesurfer label map and finding a proper region-wise mapping for the RISH features as well as a voxel-wise mapping for the SH coefficients. The mapped coefficients are then used to estimate the harmonized dMRI signal of the target site making it statistically similar to the reference site.