Dear All,

 

I met a error when using fnirt with a lesion mask (setting in "--inmask"), but fnirt works fine without this lesion mask. This lesion mask is a binarised mask, has the same dimensions and qform & sform as correspondent T1, and works fine with flirt.

 

The error message is:

Error occured during estimation at first level of subsampling
Exception thrown with message: SpMat::DiagPrecond: Cannot condition singular matrix.

 

A previous post suggested to update to V4.1.2 of FSL (https://www.jiscmail.ac.uk/cgi-bin/webadmin?A2=ind0902&L=FSL&D=0&P=330047), and I have done so. I am using V4.1.2 of FSL on a Linux server.

 

Any suggestions would be appreciated!

 

Best wishes,

Ling

--
Ling Wang, PhD candidate
Cognitive Neurology, Institute of Neurosciences and Medicine (INM-3)
Research Centre Juelich
52425 Juelich, Germany
Phone: +49-2461-614208
Fax: +49-2461-611518

International Graduate School of Neuroscience
Ruhr University Bochum
44801 Bochum, Germany