I was curious to see the "Innovative DICOM Medical Imaging" section. I wouldn't have thought that Apple would be interested in niche applications like viewing radiology imaging, but I guess they're probably interested in any cost-insensitive market for these since they're so expensive.
It's probably an easy win for them. It also might have been a good target when they were ideating on specs. Having these pro certifications gives the devices a halo of premium quality.
At a local hospital the radiologists have been all Mac for a long long time. They refused to give it up and resisted all attempts to get them to switch. So it doesn’t surprise me at all.