What is contrast?

Contrast media is a substance that, when injected into your body, helps physicians identify anatomical structures by making them appear different than surrounding tissues. MR uses magnetic fields to image the body so most MR contrast agents contain metal compounds, typically gadolinium.

Can contrast be dangerous?

The FDA has cleared MR contrast agents to help physicians identify or characterize tumors. For most people, MR contrast agents pose no health risks. However, some patients can have allergic reactions or more serious complications from an injection of MR contrast.

MR contrast agents are not advised for patients with certain kidney problems. (Read the FDA advisory) If you have, or suspect you have, kidney problems you should speak with a doctor before undergoing an MR scan.

Are non-contrast images just as good?

Although not cleared by the FDA for this purpose, MR contrast agents are sometimes used to help image blood flow and vessels in the body. These exams are called Magnetic Resonance Angiography (MRA). Recent advances pioneered by Toshiba have made blood flow images taken without contrast equal to or, in some cases, more diagnostic than those performed with contrast. For certain patients, like those with kidney problems, non-contrast MRA could be the only viable imaging option. Read how non-contrast MRA is being put to work at Springhill Medical Center in Mobile, AL.

Is an MRI procedure safe?

MRI is one of the safest imaging technologies available. By using magnetic fields and radio waves, MRI is able to provide your doctor with excellent images of your body without x-rays. Even though it is very safe, there are still precautions which each patient needs to consider before being scanned. To be sure you are properly prepared for your exam, it is best to discuss your MRI exam with a medical professional before you arrive at the facility for your scan.

For more information about an MR scan, visit the Radiological Society of North America http://www.radiologyinfo.org/en/sitemap/modal-alias.cfm?modal=MR or watch a video at http://www.imrser.org/PatientVideo.html