I’ve had my head “examined” on more than one occasion. In particular, I have had a couple magnetic resonance imaging (MRI) scans done of my head. One at the UBC hospital, from which I acquired 18 sagital slices and 18 axial slices, and one at BC Children’s Hospital (129 sagital slices).
These MRI scans are T1 weighted, which means that bone and air are black, while bone marrow and other soft tissues are gray or white. Blood that is just arriving to the head will also appear black.
The best way to get your hands on my MRI data is to download ImageJ. My dataset is one of the samples that you can download in the “File” menu.