Include PX modality (panoramic x-ray)

Issue #678 new
David Platten
created an issue

Our new panoramic dental system sends cephalometric images as DX which OpenREM is able to use. It sends panoramic images as PX, which OpenREM currently ignores. However, examining the DICOM tags these files have the same structure as the system's DX images, so OpenREM would have no trouble displaying them. The question is: where should they be displayed (I think in "Radiographic"), and also whether there are specific "panoramic" fields to look for.