Dear FSL users,
I'm working on a cohort of 154 subjects, two types of scans were acquired : anatomical MRI and DTI scans. MD and FA indices were extracted from DTI images and analysed using Voxel-Based approach.
I would like to work with a Region Of Interest approach. So, I have run hippocampal segmentation using FIRST. I have check the registrations using slicesdir, and then I obtained the hippocampal volumes for each subject.
I would like to know if it's possible to use the hippocampal mask obtained in order to extracted MD values. I suppose that in a first time, I should coregister MD images to the 3D T1 for each subject but I don't know how...Knowing that, DTI scans have a resolution of 1x1x1 mm while anatomic scans have a resolution of 2x2x2 mm...
I'm sorry, I'm not an expert for using FSL and so I have some difficulties...
Thank for your time and your help,
Amandine
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