I've noticed there are quite a few medical images on the stock sites. A search for x-ray on shutterstock gives 1700 results, and maybe half of these look like just plain shots or scans of the originals.
But who has the copyright of such pictures? The hospital, the doctor/nurse/midwife who took the picture, or the pasient? Since I'm so "lucky" that my kids that have been in and out of hospitals, I have quite a few nice images. Can I just upload them without asking for permission?
I guess there is no reason to attach an MR? E.g. to a brain scan.