Thank you FDP.

Is there a good source for CT scan image video (free)?

I see that they use video at:
http://arc-team-open-research.blogspot.com/2012/09/converting-video-of-computed-tomography.html
http://www.oucom.ohiou.edu/dbms-witmer/3D-Visualization.htm

I spent a little time looking at Invesalius, 3DSlicer, and RadiAnt, which use "DICOM."
There are a couple of programs called "img2dcm," code anyway, to convert PNG and/or JPEG to DICOM,
but a person would have to be a software expert to use it.(?) I'll have to try the Python line.

- Brian