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. 2022 Mar 18;11(7):e023207. doi: 10.1161/JAHA.121.023207

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© 2022 The Authors. Published on behalf of the American Heart Association, Inc., by Wiley.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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A, Transthoracic echocardiography with Doppler of LAD. B, PET. C, MIBI SPECT. D, CMR. E, Doppler CFR. F, Absolute coronary blood flow measured by thermodilution. G, Thermodilution, CFR and IMR. H, Acetylcholine testing. CFR indicates coronary flow reserve; CMR, cardiac magnetic resonance; IMR, index of microcirculatory resistance. LAD, left anterior descending artery; MIBI SPECT, myocardial perfusion imaging on single photon emission computed tomography; and PET, positron emission tomography.