We have exactly the same data -
what we do is merge all data sets into a sungle big 4D file, run
eddy_correct on this big file, then split it up into 3 averages and
average these..
Cheers
T
> Hi. I have a 60-direction DTI scan that is repeated 3x for subsequent
> averaging. The whole scan takes ~45 minutes, and the 3 sequences are
> repeated after each other (so it takes one whole 60-direction volume,
> then a second, then a third). Of course subjects are told to keep
> their heads still, but there is inevitably some movement. My question
> is, is it better to run eddy_correct on each of three acquisitions and
> then average them, or average them first and then run eddy_correct? Or
> any other suggestions?
>
> Thanks in advance,
>
> --
> Mike Cohen
> UC Davis Psychology
> Epilepsy and Psychiatry Clinics, Bonn, Germany
> http://www.DynamicMemoryLab.org/mcohen
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