[Mrtrix-discussion] multiple bvalue

[Luis Concha]

Agreed. I will not use CSD with multi-shell data. However, given that the
tensor model is sufficient for the tract I am interested in (fornix), that
CSF suppression is crucial for this study, and that FLAIR is not working
well for me right now, I will still use this acquisition, as it eliminates
signal from CSF due to its very high ADC. FYI, my imaging protocol also
includes another, single-shell, multi-direction acquisition specifically
for CSD.

Luis


On Thu, Nov 15, 2012 at 7:31 PM, Donald Tournier <d.tournier at brain.org.au>wrote:

> Hi everyone,
>
> The DTI fit in MRtrix should handle multiple b-values fine. The CSD
> approach however cannot currently handle such data, as Thijs correctly
> stated. Luis, I'm surprised that you manage to get convincing results
> simply by stripping off the b=0 image, since it is ignored by csdeconv
> anyway (unless you use the -normalise option which is not recommended). In
> any case, it is definitely not designed to handle multiple b-values, so I
> would not advise planning your study around it...
>
> Cheers,
>
> Donald.
>
>
>
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