Joseph M. O'Brien

Diagnostic Accuracy and Feasibility of Quantitative Flow Ratio at Low Frame Rate Angiography: The Prospective Multicentre Australian AVALON Study.

BACKGROUND Quantitative Flow Ratio (QFR) is a well-established, non-hyperemic, angiographic, wire-free predictor of ischemia when compared to Fractional Flow Reserve (FFR). However, its diagnostic accuracy at low frame rates (< 10 frames/second), commonly used in contemporary practice to minimize radiation exposure, ha...