Mtnormalise issue

Hi guys,

Thank you so much for answering the questions so timely!

I am following the instruction for fixel-based-analysis (Fibre density and cross-section - Multi-tissue CSD) to analyze my 7T data.

For the data, I am using b=1000 and 2000 for the analysis (got rid of b=10 which was causing problems for generating response functions).
After following through the instructions till mtnormalise, I am getting errors for all my data:
[ERROR] Non-positive tissue balance factor was computed. Tissue index: 2 Balance factor: 0 Needs to be strictly positive!

There is also one case with Tissue index: 1

I understand that the Tissue index 1 is GM and 2 is CSF.
Is it possible that I only provide WM for mtnormalise? I am not entirely sure how non-positive values got there…

In dwi2fod, I used -lmax 10,0,0 option.

Thanks a lot!


never mind…after fixing B0 threshold, this problem was solved.


Good to hear it worked. :+1: