Follow up:
I forgot to mention that a really good 3T MRI without contrast can provide nearly as good an image as some MRIs with contrast.
One to call around for is the Siemens Skyra E11C 70cm Wide Bore, which is probably the finest MRI and most enhanced, currently available.
3T is a lot of magnetic field.
Do I need to unholster my semi-auto pistol in that Siemens MRI machine?
Nice to know.