sitkUtils.PullVolumeFromSlicer makes Slicer crash

[Fernando]

@Fernando

import SampleData import sitkUtils as su sampleDataLogic = SampleData.SampleDataLogic() node = sampleDataLogic.downloadMRHead()

Actually, it seems to be a problem with SimpleITK, as sitk.ReadImage() makes Slicer crash as well.

@blowekamp