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. Author manuscript; available in PMC: 2017 Feb 6.
Published in final edited form as: JACC Cardiovasc Interv. 2015 Sep;8(11):1433–1441. doi: 10.1016/j.jcin.2015.03.045

FIGURE 1. Schematic of Physiological Assessment Using a Single Coronary PressureWire.

FIGURE 1

Image modified from Kobayashi and Fearon (9). CFR = coronary flow reserve; FFR = fractional flow reserve; IMR = the index of microcirculatory resistance; Pa = mean proximal coronary pressure; Pd = mean distal coronary pressure; and Tmn = mean transit time.