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Comparison of global rest and stress myocardial blood flow (MBF) and flow reserve (MFR) estimated with13N-ammonia PET and 99mTc-sestamibi SPECT using standard ordered subset expectation maximization (OSEM) reconstruction without spline fitting. Correlation plots of global MBF (panel A) and MFR measurements (panel C). Bland–Altman plots of global MBF (panel B) and MFR measurements (panel D).
