TEST: now using splines
TEST: now using splines

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Former-commit-id: 8b72c892176aa9c522c1017678f6a1510bd5633c
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neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox