- Patientsare prescribed SPECT MPI according to ACCF / ASNC / ACR / AHA / ASE / SCCT / SCMR / SNM 2009 Appropriate Use Criteria for Cardiac Radionuclide Imaging for patients after coronary revascularization: + Pat ients have angina or equivalent expression (fatigue, shallow breathing) + or ECG characteristics suspection of myocardial ischemia.