Conventional angiography may unreliably estimate the functional severity of coronary lesions, particularly of intermediate stenosis. It is in this context that intracoronary physiology, namely the measurement of fractional flow reserve (FFR), has been developed: to precisely differentiate stenoses that cause myocardial ischemia from those that are not significantly obstructive. Overall, FFR has been applied as a decision-making tool, helping to indicate (or defer) revascularization in intermediate or ambiguous coronary stenoses. Compared with angiography alone, the addition of FFR-derived information has […]