Dear Dr. Behrens,
I am working with your wonderful diffusion software package and I have one
question concerning the sample data for the Fdt tutorial, especially about
the direction scheme. Looking at the given bvecs file I noticed that the
gradient vectors are not unit vectors; they all sum up to approximately
1.019. Could you explain me why?
I am currently investigating directionschemes on a Philips system and I was
wondering whether the tensor fitting is affected when using non-unit
gradient vectors.
Also, looking at the number of digits for each component in your bvecs file
I was wondering whether some post-processing was done on the bvecs file? I
am asking this because on the Philips system used here only 4 digits can be
entered for each gradientvector component.
Thank you for your time and I am looking forward to hearing from you.
Best regards,
Jeroen Siero
Undergraduate student
Biomedical Engineering
Rijksuniversiteit Groningen, The Netherlands
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