dwipreproc: Permit rigid-body between DWI and SE-EPI#1736
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jdtournier merged 3 commits intomasterfrom Dec 4, 2019
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If the -align_seepi option is used, and the only difference between the DWI series and the SE-EPI series is a rigid-body transformation, then there is no need for the SE-EPI volumes to be explicitly re-gridded to match the DWI voxel grid; it can instead be safely concatenated with the first DWI b=0 image despite the difference in header transform. The header transform of the SE-EPI series is therefore replaced with that of the DWIs explcitly, but only in this specific instance (i.e. -align_seepi is used, and the only difference between the images is within the header transform).
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Also: See relevant discussion in bids-apps/MRtrix3_connectome#61. |
jdtournier
approved these changes
Dec 4, 2019
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Better support in
dwipreprocfor a very specific type of image acquisition protocol. The only change is to prevent an unnecessary image re-gridding of the SE-EPI data onto the DWI voxel grid.While an API function is modified to add an optional input argument, the default value of this parameter means that behaviour and interface are unchanged elsewhere. I will resolve the change manually with
dev, since I would prefer to more consistently use key-value function arguments in the updated API.