Automatic clustering of short association white matter fibers from HARDI tractography datasets

In this paper we studied the short brain association fibers based on an inter-subject clustering over 20 subjects of a high quality HARDI database. Fibers from all the subjects were clustered together in Talairach space. Generic fascicles present in most of the subjects were then labeled using a cortical parcelation and several criterion for the selection of the final bundles and labels. For the left hemisphere, we obtained 52 representative fascicles, present in at least 17 of the 20 subjects, twelve of which were found in all the subjects. For the right hemisphere, we found 28 representative fascicles, eleven of which were found in all the subjects.