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Stress phase angle depicts differences in coronary artery hemodynamics due to changes in flow and geometry after percutaneous coronary intervention.

This paper identifies marked difference in biomechanical characteristics of atherosclerotic narrowing in coronary artery before and after intravascular intervention. For the first time, an integrated measure of haemodynamics and arterial wall mechanics, called stress-phase angle, was applied and it led to the identification of a substantial post-interventional improvement. The clinical relevance of this work, which was supported by the British Heart Foundation (PG/04/078, FS/05/034) and Foundation for Circulatory Health (ICCH/07/5015), was recognised by the British Cardiovascular Society, through the nomination of the first author as a finalist for the Young Research Workers’ Prize in their Annual Scientific Conference 2008.