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. Author manuscript; available in PMC: 2015 Mar 30.
Published in final edited form as: JACC Cardiovasc Imaging. 2014 Mar 13;7(4):374–386. doi: 10.1016/j.jcmg.2013.12.013

Figure 5. Example of TAG Analysis of a Highly-Calcified RCA.

Figure 5

Coronary CTA (A and C) and cross-sectional images with the region of interest indicated by the green circle (D), invasive coronary angiography with FFR (B), and TAG analyses (E) of a highly calcified right coronary artery (RCA) with a hemodynamically significant stenosis (FFR = 0.27). Note that TAG analyses were comparable and omission of calcified segments did not alter the results. In this patient, TAG did not show a decline in contrast density along the artery despite a severely compromised hyperemic distal pressure. Abbreviations as Figure 1.