What can you tell me about an angiogram? what does it consist of?

Blood vessel study: An angiogram is a test done to visualize the inside of blood vessels, most commonly to look for blockage or narrowing that may affect blood flow to an organ or extremity. Usually an iodine based contrast in injected directly into the vessel through a catheter in a cath lab or interventional radiology suite. Some types of angiograms can be done non-invasively in a CT or MR scanner.