Incremental prognostic potential of myocardial flow reserve (MFR). Bar graph showing reclassification in risk of major cardiac adverse events (MACE) with the incorporation of myocardial flow reserve in each category of summed stress scores (SSS) in PET myocardial perfusion imaging. *p = 0.028 for SSS ≥4 to 7 and MFR <1.5 versus MFR ≥2. **p = 0.002 for SSS ≥8 and MFR <1.5 versus MFR ≥2.
From Ziadi MC, Dekemp RA, Williams KA, et al. Impaired myocardial flow reserve on rubidium-82 positron emission tomography imaging predicts adverse outcomes in patients assessed for myocardial ischemia. J Am Coll Cardiol. 2011;58(7):740–748; with permission.