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Cardiac Applications of Positron Emission Tomography Scanning

Cardiac positron emission tomography (PET) scanning may be considered medically necessary to assess myocardial perfusion and thus diagnose coronary artery disease in patients with indeterminate single photon emission computed tomography (SPECT) scan; or in patients for whom SPECT could be reasonably expected to be suboptimal in quality on the basis of body habitus.
Cardiac PET scanning may be considered medically necessary to assess myocardial viability in patients with severe left ventricular dysfunction as a technique to determine candidacy for a revascularization procedure. (See the Background section regarding the relative effectiveness of PET and SPECT scanning.)

Cardiac PET scanning is investigational for quantification of myocardial blood flow for cardiac event risk stratification in patients diagnosed with coronary artery disease.

Cardiac PET scanning may be considered medically necessary for diagnosing cardiac sarcoidosis in patients who are unable to undergo magnetic resonance imaging. Examples of patients who are unable to undergo magnetic resonance imaging include, but are not limited to, patients with pacemakers, automatic implanted cardioverter defibrillators, or other metal implants.

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