TEST: removed issue related to conversion of NaN into int()
TEST: removed issue related to conversion of NaN into int()

Former-commit-id: d3ff90bf5554813fb886cbde36b0e50cdd3e7a0d
Former-commit-id: feafaced176f00dde4fa901a6b8d8c42ffc83519
3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox