Can you please tell me about the abilities of what a cat scan can tell the doctor?

Depends: Ct has very broad medical applications. Ct produces excellent pictures of the internal organs and can identify a vast range of abnormalities in most areas of the body. There are certain medical conditions for which other imaging tests may be better, but if performed in the appropriate context, ct scans are often the best test for making a definitive diagnosis.

Hard tissue: Ct scans are a form of x-rays. They are most appropriate to identify hard tissue structures like bone, teeth, other calcifications. Mri's are images (not x-rays) & better suited for evaluation of soft tissues, like organs, etc.

See answer: The ct scan can give vital information about the volume of jaw bone present at potential dental implant sites, pathology of the jaws, infection or fractures of the teeth, the amount of bone loss around the teeth and the location of vital structures like nerves and blood vessels in the jaws.