Cardiac or coronary catheterization and angiograms are medical procedures that allow doctors to examine the inside of the heart and arteries. Cardiac catheterization involves a doctor inserting a long ...

An angiogram is a diagnostic test that uses X-rays and a contrast dye to visualize the blood vessels in the body, including those in the brain. This test can help diagnose a brain aneurysm. An ...

Angiography mainly shows the silhouette of the artery, while tests such as intravascular ultrasound (IVUS) and optical coherence tomography (OCT) allow doctors to see the artery from the inside.