Peak systolic velocity (PSV) is a term used to describe the highest velocity of blood flow through a particular artery during a cardiac cycle. Other synonyms for this term include maximal systolic velocity, peak velocity, and peak blood flow rate. These terms are commonly used by physicians and healthcare professionals in the context of diagnosing and treating cardiovascular disease, specifically in the assessment of stenosis and occlusion of various arteries. Regardless of the chosen terminology, the use of PSV remains an essential tool in the evaluation of arterial health, and the monitoring of cardiovascular risk factors and disease progression.