Dear MRtrix experts,
I’m trying to extract mean FA and MD values from a single ROI. I have tried the following approach for FA values, and I was planning on using a similar command for MD values:
mrstats fa.mif -mask roi.mif -output mean > roi_fa.txt
This is followed by an error saying that there is a dimension mismatch between fa.mif and roi.mif. I obtained my fa.mif file by the following commands:
dwi2tensor dwi_preproc.mif tensor.mif tensor2metric tensor.mif -fa fa.mif
The ROI was made on a T1 DW coregistered image and then saved.
Does anybody have any suggestions for what went wrong?
Excuse me if my question tends to be a bit basic, I’m still pretty new to MRtrix. Thanks a lot in advance!