Add default values for some DICOM fields #94
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This PR adds some fixes that I had found that I needed to handle some non-normative DICOM files. The defaults were the best I could assume by looking at e.g. the GDCM library which assumes axial orientation.
I am less sure about the fix for the
setup.pyfile. This change was needed for me to getpip install -e .to work, otherwise I would get an error when trying to importrt_utils(would say module not found).