What Is Cardiac MRI?
MR imaging uses a powerful magnetic field, radio frequency pulses and a computer to produce detailed pictures of organs, soft tissues, bone and virtually all other internal body structures.The images can then be examined on a monitor, printed or copied to a CD. MRI does not use ionizing radiation (x-rays).
- What Is Cardiac MRI?
- What To Expect Before Cardiac MRI?
- What To Expect During Cardiac MRI?
- What Does Cardiac MRI Show?
- What Are the Risks of Cardiac MRI?
- Key points
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What Is Cardiac MRI?
MR imaging uses a powerful magnetic field, radio frequency pulses and a computer to produce detailed pictures of organs, soft tissues, bone and virtually all other internal body structures. The images can then be examined on a computer monitor, transmitted electronically, printed or copied to a CD. MRI does not use ionizing radiation (x-rays).
MRI uses radio waves, magnets, and a computer to create pictures of your organs and tissues. Unlike computed tomography scans and standard x rays, MRI doesn't use ionizing radiation or carry any risk of causing cancer.
Cardiac MRI creates pictures of your heart as it's beating, producing both still and moving pictures of your heart and major blood vessels. Doctors use cardiac MRI to get pictures of the beating heart and to look at its structure and function. These pictures can help them decide how to treat people who have heart problems.
Cardiac MRI is a common test. It's used to diagnose and evaluate a number of diseases and conditions, including:
- - evaluate the anatomy and function of the heart, valves, major vessels, and surrounding structures (such as the surrounding pericardial sac).
- - diagnose and manage a variety of cardiovascular problems.
- - detect and evaluate the effects of coronary artery disease.
- - plan a patient's treatment for cardiovascular problems and monitor patient's progress.
Using cardiac MRI, physicians can:
- - examine the size and thickness of the chambers of the heart.
- - determine the extent of myocardial (heart muscle) damage caused by a heart attack or progressive heart disease.
- - detect the buildup of plaque and blockages in the blood vessels.
- - assess a patient's recovery following treatment.
Cardiac MRI can help explain results from other tests, such as x rays and CT scans. Sometimes, cardiac MRI is used to avoid the need for invasive procedures or tests that use radiation or dyes containing iodine (these dyes may be harmful to people who have kidney problems).
Often during cardiac MRI, a contrast agent is injected into a vein to highlight portions of the heart or blood vessels. This contrast agent often is used for people who are allergic to the dyes used in CT scanning.
People who have severe kidney or liver problems may not be able to have the contrast agent. As a result, they may have an MRI that doesn't use the substance (a noncontrast MRI).
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Other Names for Cardiac MRI
- Heart MRI
- Cardiovascular MRI
- Cardiac nuclear magnetic resonance (NMR)