Hi Jonathan,
the bug fix for DICOM just has been rebased on the dev_5_0 branch (see https://github.com/openmicroscopy/bioformats/pull/1401) and is currently under investigation for merging. Once this is merged, I can paste a link to check the ImageConverter which should work for your images.
Re OMERO server, there is no easy way to update the JARs at the moment and I would recommend waiting for the next 5.0.x release which should hopefully come in the following weeks and will include the DICOM patch.
Best
Sebastien