Figure 1.

A case of physiology guided percutaneous coronary intervention (PCI). A. A patient showed angiographically, two vessel disease with stenosis in left anterior descending artery (LAD) and left circumflex artery (LCX). However, fractional flow reserve (FFR) in LAD, LCX and right coronary artery (RCA) was 0.84, 0.79, and 0.66, respectively. In contrast to angiographic assessment, physiologic assessment showed that the targets of revascularization were LCX and RCA, not LAD. In RCA, significant pressure step-up occurred at the ostium (arrow); B. PCI was performed for proximal LCX and RCA lesions and post PCI FFR at LCX and RCA was 0.90 and 0.98, respectively.