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What is the difference between an X-ray, CT scan, and MRI? When are these tests performed?

Learn which medical tests are appropriate and which ones to use for pain or injury. What's the difference between an X-ray, ...

I was recommended a CT scan for root canal treatment. Questions to ask before the scan: 'How will this test change things?'

A dentist speaks honestly~Hello, I am Dr. J, a practicing dentist.When you are told, 'We can't tell from a regular X-ray ...
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Mayo Clinic Q&A: Picture this: CT scans take an inside look

DEAR MAYO CLINIC: I’m scheduled for a CT scan, and I’ve never had one before. What does a CT scan do, what will it be like and is it safe? ANSWER: Co mputer tomography (CT) was invented more than 50 ...