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Quantitative Coronary Physiology for Clinical Management: the Imaging Standard

  • Nuclear Cardiology (V Dilsizian, Section Editor)
  • Published:
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Abstract

Pressure derived FFR and coronary flow capacity by PET define a physiologic severity-risk-benefit continuum wherein probability of benefit from revascularization over risk of the procedure and risk of residual global diffuse disease guides personalized, informed, evidenced based, interventional decisions. For the many variations in PET or MRI protocols for quantifying myocardial perfusion to define physiologic severity, the simple standard performance test combining measurement accuracy and clinical coronary pathophysiology to assure correct clinical decisions is the capacity to measure (i) rest perfusion of 0.2 cm3/min/gm in transmural scar in at least five patients to test low perfusion accuracy (ii) regional and global CFR of 4.0 or stress perfusion of 2.9 cm3/min/gm on two sequential rest-stress PET perfusion studies in the same subject with ±15 % variability for at least 15 young healthy volunteers with no risk factors, no smoking, no obesity, and no measureable blood caffeine levels.

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Abbreviations

CAD:

Coronary artery disease

PET:

Positron emission tomography

CFR:

Absolute coronary flow reserve

relCFR:

Relative coronary flow reserve

FFR:

Fractional flow reserve

PCI:

Percutaneous coronary intervention

SPECT:

Single photon emission computed tomography

MI:

Myocardial infarction

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Correspondence to K. Lance Gould.

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Conflict of Interest

K. Lance Gould and Nils P. Johnson declare that they have no conflict of interest.

Human and Animal Rights and Informed Consent

This article does not contain any studies with human or animal subjects performed by any of the authors.

Financial Support and Relationships with Industry

KLG received internal funding from the Weatherhead PET Center for Preventing and Reversing Atherosclerosis and is the 510(k) applicant for CFR Quant (K113754) and HeartSee (K143664), software packages for cardiac positron emission tomography image processing and analysis, including absolute flow quantification. All royalties will go to a University of Texas scholarship fund.

NPJ received internal funding from the Weatherhead PET Center for Preventing and Reversing Atherosclerosis and has received significant institutional research support from St. Jude Medical (for NCT02184117) and Volcano/Philips Corporation (for NCT02328820), makers of intracoronary pressure and flow sensors.

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Gould, K.L., Johnson, N.P. Quantitative Coronary Physiology for Clinical Management: the Imaging Standard. Curr Cardiol Rep 18, 9 (2016). https://doi.org/10.1007/s11886-015-0684-7

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