I doubt this is AI. This looks right for a micro-CT angiograph.
The blood vessels will have X-ray opaque dye injected, so they stand out on the CT. You can then set a threshold in the visualization software to filter out other tissue. The software then uses an algorithm to apply some shading to the surfaces of the unfiltered tissue to create a 3D effect.
The red colouring is a choice of the user, it just colours darker parts red and fades out to transparency.
huginn@feddit.it 2 months ago
I agree it seems like AI
But if it came from anywhere it would probably be the book he published last year.
avianstudios.com/…/avian-surgical-anatomy-and-ort…
Which seems like a pretty credible origin to me