Are you a radiologist or are you just throwing words around because you don't like the Apple Vision Pro for whatever reason?
The radiologists I collaborate with at a major academic medical center in the United States just use normal computer screens (mostly normal Dell Ultrasharps). No "FDA-approval" needed. The displays are factory calibrated (not anything special for radiologists, just the standard calibration), but the AVP easily has a display as good as or better than what most radiologists are using.
There are displays that are factory calibrated to DICOM files to a set luminance of 250cd/m2 (e.g.,
https://www.monitors.com/products/hp-clinical-review-display), but they are absolutely not necessary. Again, I know our radiology department just orders standard monitors. Calibration is done on site by setting them all the same luminance (but the radiologists will change luminance as needed).
Also, what do DICOM files have to do with the monitor? Why does it have to be DICOM compliant? Your statement is like asking if a monitor is TIFF compliant. A monitor can display a TIFF if the computer can. DICOMs are just medical image files that can be viewed, even for medical service, on any display.
"is the software is HIPAA-compliant?" That's up to the apps used. The device is encrypted and secured. It's as "HIPAA-compliant" as any other modern computer with an encrypted drive and good password protection.
Also, you actually meet with a radiologist in person? That's not common. Usually they give the reports to the referring physician and do not interact directly with patients. There's a reason there is research saying, "Hey, it's possible for radiologists to give feedback directly to patients" (e.g.,
https://doi.org/10.2214/AJR.17.18327). Radiologists often are in a room full of computer screens reviewing images and sending reports back to the referring physician.