I stumbled across the video by chance and though others might like it. I liked some of the photos they reminded me of when I started photography. The typical blank sky that ortho films produce. At $40 for 100 ft I was tempted to buy a roll then remembered all the stuff in my freezer. Still ...

If I understand correctly as AgX points out not typical Xray film. It is used to take motion pictures from a fluorescent screen. A persons stomach in action or something similar. At such a small size it cannot be used directly as are Xray plates. Fluorescent screen emits green light hence the film need only be orthochromatic.
There is no mention of it being processed to slides. But that would certainly seem a possibility. I wonder what the RMS granularity of the film is. I have been a bit disappointed with Ilford Pan F Plus.