Peripheral artery disease (PAD) is a condition characterized by the narrowing or blockage of the blood vessels outside of the heart, typically affecting the arteries that supply blood to the legs and feet. PAD is often a result of atherosclerosis, a buildup of fatty deposits (plaques) on the inner walls of the arteries. Over time, these plaques can restrict blood flow, leading to various symptoms and complications.

Unit 5,

Reference: A R Owen, G H Roditi, Peripheral arterial disease: the evolving role of non-invasive imaging, Postgraduate Medical Journal, Volume 87, Issue 1025, March 2011, Pages 189–198,