Can you please tell me how mri and ct scans differ?

Read more here: Please see these two articles for a more in-depth differentiation of the two: mri: http://www.Conciergeradiologist.Com/mri-scan.Html ct: http://www.Conciergeradiologist.Com/ct-scan.Html.

Radiation: The links that dr. Janjua listed are excellent. But the simple answer to your question is: ct scans depend on radiation to generate their images. Mri scans use magnetic waves to activate the protons which then give off characteristic signals that produce the images. The bottom line-no radiation with mris. Mris are better for soft tissue differentiations (ie. Brain tumors), ct are better for bone.