Hello Experts,
I would be grateful if you could help me with this problem:
I was able to run all steps of TRACULA on several subjects without any error message, but all the final outcomes (FA,MD,RD,AD values) are out of the expected range (i.e average FA values for all tracts are >1).
I tried to identify the source of this problem... clearly FA values in "dmri/dtifit_FA", which is an output of "prep" step are all out of range. The only source of error that I can think of is .bvecs file. My input .bvecs files are in 3 columns, exactly as described in the manual.
There are two .bvecs file in the "dmri" folder. one is "dwi_orig.mghdti.bvecs" which is exactly the same as my input .bvecs file and the other one's name is just "bvecs", which has completely different values. Could this be the source of my problem? or something else is causing this.
Thank you, Ali