OPT: reg_multimodal with multi-step approach (incomplete)
OPT: reg_multimodal with multi-step approach (incomplete)

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neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox