Aim: In this retrospective study, fractional flow reserve was compared to stress myocardial blood flow derived by -ammonia (-NH3) myocardial perfusion PET/CT.
Methods: From a large cohort of patients referred for -NH3 PET/CT, patients who also had fractional flow reserve-measurements within 6 months of the PET study were selected. These fractional flow reserve measurements were compared to PET/CT derived stress myocardial blood flow of the corresponding coronary territory.