FSL bvecs/bvals / NIfTI compatibility documentation

MRtrix3 / mrtrix3

MRtrix3 provides a set of tools to perform various advanced diffusion MRI analyses, including constrained spherical deconvolution (CSD), probabilistic tractography, track-density imaging, and apparent fibre density

http://www.mrtrix.org

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FSL bvecs/bvals / NIfTI compatibility documentation #515

Open Lestropie opened 8 years ago

Lestropie commented 8 years ago

I'm getting questions on this more and more, and finding out about more people that have been handling gradient table data incorrectly. So I think we need a full discussion topic page in the documentation on this.

bvecs / bvals vs. MRtrix gradient table
- NOT just a reformatting
- scanner vs. image space
NiFTI data strides
- Including order of performing this relative to bvecs / bvals export
qform / sform matrices: What MRtrix reads & writes

thijsdhollander commented 8 years ago

Yep, fully agreed. We could also clarify the bvecs/bvals thing slightly better in the help/doc for those options. At the moment, coming in without any prior knowledge, you might indeed naively think it's just a different formatting.

jdtournier commented 8 years ago

:+1:

It's going to need lots of diagrams to really explain all this clearly...

Lestropie commented 7 years ago

The bvecs / bvals side of things should be dealt with in #932. Does more need to be done in terms of qform / sform / generating diagrams to explain the difference between image and scanner space?