Magnetic Resonance Imaging (MRI)

MRI (Magnetic Resonance Imaging), Nuclear Magnetic Resonance Imaging

Results

A magnetic resonance imaging (MRI) is a test that uses a magnetic field and pulses of radio wave energy to make pictures of organs and structures inside the body.

The radiologist may discuss initial results of the MRI with you right after the test. Complete results are usually ready for your health professional in 1 to 2 days.

An MRI can sometimes find a problem in a tissue or organ even when the size and shape of the tissue or organ looks normal.

Magnetic resonance imaging (MRI)

Normal:	The organs, blood vessels, bones, and joints are normal in size, shape, appearance, and location.
	No abnormal growths, such as tumors, are present.
	No bleeding, abnormal fluid, blockage in the flow of blood, or bulges in the blood vessels (aneurysms) are present.
	No signs of inflammation or infection are present.
Abnormal:	An organ is too large, too small, damaged, or absent.
	Abnormal growths (such as tumors) are present.
	Abnormal fluid from a cause such as bleeding or an infection is present. Fluid is found around the lungs or heart. Fluid is found around the liver, bowel, or other organ in the abdomen.
	A blood vessel is narrowed or blocked. An aneurysm is present.
	Blockage in the gallbladder bile ducts or in the tubes (ureters) that lead out of the kidneys is present.
	Damage to joints, ligaments, or cartilage is seen. Bones are broken or show infection or disease.
	Problems of the nervous system are present, such as multiple sclerosis (MS), dementia, Alzheimer's disease, or herniated disc.

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Author:	Maria G. Essig, MS, ELS	Last Updated: June 22, 2007
Medical Review:	Paul D. Traughber, MD - Radiology Kenneth B. Sutherland, CD, BSc, MD, FRCPC - Diagnostic Radiology
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