HI Marina,<div><br></div><div>I just had a quick look at the FSL doc for qboot, and it seems capable of outputting the SH coefficients of the ODFs. If this is the case, it should be possible to feed these images through to streamtrack. The issue will be to ensure that the SH coefficients are in the correct order for MRtrix, and that they are scaled appropriately. The best place to look at these issues on the MRtrix side is the MR::DWI::SH::value() functions, in the file src/dwi/SH.cpp, this will tell you precisely what convention MRtrix assumes. Unfortunately, the SH basis used in MRtrix is not orthonormal, there is a missing sqrt(2) factor for the m!=0 terms (sorry - too late to fix by the time we noticed). I'm guessing that it would be a simple matter of scaling these coefficients, and potentially re-ordering them, to convert between the two packages. Unfortunately, I don't have time to devote to this, so you'd have to figure it out and code it yourself...</div>
<div><br></div><div>Hope that helps.</div><div>Cheers,</div><div><br></div><div>Donald.</div><div><br><br><div class="gmail_quote">On 6 August 2012 22:23, Curci Marina Carmela <span dir="ltr"><<a href="mailto:marina.curci@epfl.ch" target="_blank">marina.curci@epfl.ch</a>></span> wrote:<br>
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<div style="direction:ltr;font-size:10pt;font-family:Tahoma">Hi!!
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<div>I would like to know if there is a way to reconstruct data in fsl using the command qboot to perform csa qball and then track them in MRtrix.</div>
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<div>Thank you,</div>
<div>Marina!</div>
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