OPT: sct_asman: changed the first co-registration step using ANTs
OPT: sct_asman: changed the first co-registration step using ANTs

3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox