deleone, they probably took regular CT scan, they can't turn regular CT into what you call 3D CT - what they did was probably "reconstructed" the images - I have a CT scan CD, and few of the images includes are exactly it - they put all the slices together and you have your 3D image of skull. But I guess there are many ways to reconstruct an image - leave some parts out, so the calcified ligaments are more visible, etc.
3D CT - that's a newer version, that uses less radiation and is much quicker

Some dentists/oral surgeons now have these units in their offices. It's like a mini version of CT, but yet again, if you research online, the images that they provide (cone beam CT aka 3d-ct) are amazing from what I've seen online and in the research journals. Although there are many old fashioned doctors that are skeptical of it. My own oral surgeon, who I thought was the best, said that regular ct scan would be better - yea right, probably better in his pocket form the "commission"/bonus points he gets from the hospital he refers me to
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