Description: This module reviews the essential components of a carotid duplex examination. It begins with describing normal findings for grey-scale, spectral Doppler and color-flow imaging. Diagnostic criteria and pertinent findings are discussed. A variety of pathology is presented in numerous cases. Carotid cases are reviewed which include atherosclerotic disease of varying degrees of stenosis. An assortment of less common non-atherosclerotic pathology is also presented.