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. Author manuscript; available in PMC: 2015 Dec 4.
Published in final edited form as: Radiology. 2014 Jun;271(3):633–652. doi: 10.1148/radiol.14132232

Figure 13.

Figure 13

Images in a 70-year-old woman with chest pain. (a) Coronary CT angiogram demonstrates a 50%–70% left anterior descending (LAD) coronary artery stenosis (arrows). (b) Coronary angiogram demonstrates the LAD stenosis (thin arrows), which was measured to be 58% at quantitative coronary angiography. FFR was measured to be 0.88 with a pressure sensor in the distal LAD during adenosine-induced hyperemia (thick arrow), indicating lack of functional (hemodynamic) significance. (c) Color encoding of computed FFRCT values mapped to volume-rendered CT angiogram shows the LAD stenosis (thin arrows). The FFRCT is 0.85 distal to the stenosis (thick arrow) at the site of the FFR measurement performed in b.