Terminology – iFR, FFR, CFR, HSR what do all the abbreviations mean?

Dr Sayan Sen is an internationally recognised Interventional Cardiologist based at the Hammersmith Hospital, London. His clinical expertise encompasses both general and interventional cardiology. Dr Sen’s research interests involve both first in man and larger multi-centre clinical trials. His research has been published in leading medical journals and has changed clinical practice around the world. Dr Sen leads the Imperial NHS Trust Cardiology Service for Central and West London. He routinely performs complex coronary angioplasty and TAVI. He is recognised as an expert in intra-coronary physiology and intravascular imaging and often performs live cases to International Conferences. Dr Sen's academic interests are dedicated to improving patient care. As such, they include the development and validation of new diagnostic tools, determining how study design can influence the clinical use of competing therapies and the development and application of tools that permit a more patient centred approach to therapy. One of the themes of his research is to determine which patients should be treated with stents. His PhD pioneered a new technique of stenosis evaluation (the instantaneous wave-free ratio, iFR). This index has been globally adopted by physicians to help guide how they treat patients with coronary artery disease. He currently leads a PhD program examining coronary haemodynamics in patients with valve disease. Sayan teaches regularly, he is the course director of the Advanced Coronary Physiology Course for consultant cardiologists, which has been attended by hundreds of practicing interventional cardiologists from around the world. Dr Sen qualified from University College London with Distinction. In 2009 he was awarded the MRC Research Fellowship, to study haemodynamics in coronary artery bypass grafts, native coronary arteries and in patients with severe aortic stenosis. Sayan’s academic awards include the Royal Society of Medicine Investigator of the Year Award (All Sections, 2013), the Royal Society of Medicine President's Gold Medal (Cardiology section, 2013), the prestigious Imperial College Armstrong Medal and Prize (2012), the Young Investigator Award at the British Cardiac Intervention Society Advanced Coronary Intervention meeting (2012), and the Young Investigator Prize at the Translating Coronary Physiology and Biophysics to Clinical Applications Symposium, Amsterdam (2010)