What are the differences between an MRI scan and a CAT or CT scan?
No. They both use computers and are both used for diagnosis, but have very little in common. One of the most important differences between a CT scan and an MRI scan is the fact the CT scans use radiation and MRI scans do not. CT scans are computerized X-rays, MRIs use harmless radio waves and are diagnostically superior to CT scans, especially when evaluating soft tissue. In addition to superior soft tissue detail, MRIs provide much more flexibility in demonstrating cross-sectional planes of the body. Unlike a CT scanner which is relatively limited when it comes to plane selection, an MRI can provide a cross-sectional image taken at any plane in the human body.