Yes! A wonderful resource for open-access CT data was created by the same Duke Faculty member who was instrumental in the original purchase of our CT. It is called Morphosource.org, and its collection focuses mainly on biological specimens (largely skeletal material of modern and fossil critters).
One place to look for open access MicroCT data is Morphosource.org -- the images in this presentation may not be available there, but it is a growing online repository for this sort of CT data.
