Doesn't look that much better than a thin slice CT with custom colormaps ("CLUTs"), using a regular greyscale for the high density tissue (bone), and a reduced alpha channel for the low density tissue rendered in yellow.

You can get that with a Dicom station and 5 minutes, or for free using Osirix at home and trial/error if you are not used to CTs.

Ask for the CD next time you get a scan, or download one of the many examples, and play with Osirix.

That may be, but an X-ray is a simpler and cheaper procedure. To achieve “feature parity” with something more expensive is an advance.

I’m looking up the things you mentioned and they’re interesting, though. I’d love to see imaging and home-computed assessments become a bigger part of the “quantified self” movement.

What you linked to is a type of CT scan (CT uses X-rays).