Cardiac MRI provides a complete examination of the heart in under one hour. These images are of remarkable image quality- allowing much clearer evaluation of the heart than is provided by echocardiograms or the more invasive transesophageal echocardiograms. The detail of MRI makes it an invaluable tool in early detection and evaluation of heart disease. MRI enables the detection of abnormalities that might not be seen with other imaging methods. MRI provides a fast, non invasive and often less expensive alternative to other techniques of cardiac diagnosis.

What are some common uses of Cardiac MRI?

• Images of soft-tissue structures such as the heart and major vessels are clearer and more detailed than with other imaging methods.
• Even without the use of contrast material, MRI is valuable in diagnosis and treatment planning.
• When used, MRI contrast material is less likely to produce an allergic reaction than iodine-based materials used for conventional heart catheterization and CT scanning and does not contain radioisotopes used in nuclear medicine exams.
• MRI can help physicians evaluate the function, as well as the structure, of the heart muscles and valves.
• MRI does not require exposure to radiation or the introduction of radioisotopes to the body.
• Your scans are read and interpreted by a board-certified cardiologist with advanced training in cardiac MRI. For patients requiring further consultation, HCCI cardiologists are available on-site.
• Following the study, normal activities can be resumed immediately, including driving.

What are some common uses of Cardiac MRI?

Magnetic resonance imaging is becoming very important in the initial diagnosis and subsequent management of heart disease. MRI helps physicians to rapidly and thoroughly evaluate the structures and function of the heart and major vessels without the risks associated with traditional, more invasive procedures. Using MRI, physicians can examine the size and thickness of the chambers of the heart, or determine the extent of damage caused by a heart attack or progressive heart disease.

After a heart attack, for example, an MRI examination can help the cardiologist understand how well the heart is pumping, whether the flow of blood is blocked in any chamber or major vessel, whether the heart muscles are damaged or whether the lining of the heart is swelling. This is critical knowledge needed to administer prompt and effective treatment.

Using MRI, we generate movie-like images of the beating heart that doctors can use to diagnose a variety of cardiovascular problems.

How is the procedure performed?

The patient is placed on a sliding table and positioned comfortably for the MRI examination. Then the individual MRI sequences are performed. The patient is able to communicate with the technologist at any time by using an intercom. A friend or family member can stay in the room.

Depending on how many images are needed, the exam will generally take 30 to 60 minutes, although a very detailed study may take longer. You will be asked not to move during the actual imaging process.

For examination of the heart, contrast material may be used to enhance the visibility of the heart’s chambers and major vessels. A small needle connected to an intravenous line is placed in an arm or hand vein.

How should I prepare for the procedure?

Because the strong magnetic field used for MRI will pull on any iron-containing object in the body, MRI staff will ask whether you have a heart pacemaker or implanted defibrillator, implanted catheter (often referred to by brand names such as Port-o-cath, Infusaport or Lifeport), intrauterine device (IUD), or any metal plates, pins, screws or surgical staples in your body. In most cases, surgical staples, plates, pins and screws pose no risk during MRI. You will be asked if you have ever had a bullet or shrapnel in your body or ever worked with metal.

What else do I need to know?

You will be asked about drug allergies and whether you have undergone any surgery in the past. If you are or might be pregnant, mention it to the MRI staff. Some patients who undergo MRI in an enclosed unit may feel confined or claustrophobic. If you are not easily reassured, a sedative may be administered. Please let our staff know if you tend to feel claustrophobic.

What if I have an abnormal Cardiac MRI:

Heart Care Centers will work with you and your primary care doctor to treat any abnormalities discovered on this exam.