Arteriography (ar-te"re-OG'rah-fe), also called coronary angiography, is a common procedure done by injecting a dye visible by X-ray into the bloodstream. Then X-ray pictures are taken and studied to see if the arteries are damaged.

Coronary arteriography is used to help doctors evaluate the number and severity of blockages in arteries that supply blood to the heart.

The pros and cons of coronary arteriography vary with every patient. The physician and patient should discuss this procedure. In general, it's very safe when it's done by experienced physicians in hospital laboratories. The information gained helps the physician select the best treatment for a patient.

Cerebral (SER'eh-bral or seh-RE'bral) arteriography shows the extent and location of plaque buildups in the brain's major arteries. It helps doctors diagnose patients with cerebrovascular (SER'eh-bro- or seh-RE'bro-VAS'ku-ler) disease that can lead to stroke.

Arteriography is a key part in evaluating many people at high risk of stroke. However, occasionally it can lead to complications. Patients with cerebrovascular disease are at special risk. For example, stroke can occur during the procedure or in the first few hours after it's over.

Related AHA publications:

• Your Cardiac Catheterization brochure
• "What Is a Coronary Angiogram?" printable sheet in Answers By Heart kit

Related AHA scientific statements:

• Angiography/Angioplasty