Cardiac MRI perfusion

Cardiac MRI Perfusion is a non-invasive imaging technique that provides detailed information about the blood flow to the heart muscle (myocardium). It is used to diagnose and assess the severity of various heart conditions, including coronary artery disease, myocardial infarction, and cardiomyopathy.

Overview

Cardiac MRI perfusion, also known as myocardial perfusion imaging, uses a powerful magnetic field, radio waves, and a computer to create detailed images of the heart. During the procedure, a contrast agent is injected into the patient's bloodstream to highlight the blood flow to the heart. The MRI scanner then captures multiple images of the heart, allowing doctors to assess the blood flow and detect any areas of reduced perfusion.

Indications

Cardiac MRI perfusion is indicated in patients with suspected or known coronary artery disease, particularly in those with symptoms such as chest pain or shortness of breath. It is also used to assess the severity of coronary artery disease and to guide treatment decisions. In addition, it can be used to evaluate the heart's function and structure in patients with cardiomyopathy or heart failure.

Procedure

The procedure begins with the patient lying on a table that slides into the MRI scanner. Electrodes are attached to the patient's chest to monitor the heart's activity during the scan. A contrast agent is then injected into a vein, usually in the arm. The MRI scanner captures images of the heart before and after the contrast agent is injected, allowing doctors to compare the blood flow to different areas of the heart.

Risks

As with any medical procedure, cardiac MRI perfusion carries some risks. These include allergic reactions to the contrast agent, kidney damage in patients with pre-existing kidney disease, and claustrophobia due to the enclosed nature of the MRI scanner. However, the procedure is generally considered safe and the benefits often outweigh the risks.

See also

• Cardiac MRI
• Coronary artery disease
• Myocardial infarction
• Cardiomyopathy