I am new to diffusion imaging and have a few basic questions
- How can I use the fmri ROI coordinates to get the FA and other values form specific tracts? I am not sure how that can be implemented in the diffusion NATIVE space of the participant? The fMRI ROI coordinates are in a resampled MNI space. I also have the ROI masks (6mm), but again in the resampled space. How do I register? or do I need to register? and how do I deproject/move into the diffusion space from the GM space? Any documentation/guidance in this direction is a bliss… Thank you !
- I plan to use SS3D_CSD now as my data is restricted (single shell,b=700 + b0 (x10)). here, my doubt is regarding the stage at which I implement the fROIs. I believe first I will do the tractography and then use the fROI masks to select only those tracts that pass through it? I need a direction here.
Thank you much!