What term is used for the medical procedure that visualizes blood vessels using imaging techniques?

The term used for the medical procedure that visualizes blood vessels using imaging techniques is angiogram. An angiogram is a diagnostic imaging technique that involves the injection of a contrast dye into the blood vessels, followed by the use of X-rays or other imaging methods, to create detailed pictures of the blood vessels in various parts of the body. This procedure is crucial for identifying issues such as blockages, abnormalities, or diseases affecting the blood vessels, making it a vital tool in fields like cardiology and radiology.

In contrast, an aneurysm refers to a localized enlargement of an artery caused by a weakening of the artery wall and is not a procedure. An anticoagulant is a type of medication used to prevent blood clots but does not pertain to any imaging technique. An antispasmodic is a medication used to relieve spasms in muscles, especially those in the gastrointestinal tract, and is unrelated to blood vessel visualization. Thus, angiogram is the term that specifically describes the procedure in question.