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The Egyptian Heart Journal

Table 10 Correlation between the FFR, MPI, and IFR among the studied patients

From: Myocardial perfusion imaging by single-photon emission tomography (MPI SPECT) versus Instantaneous wave-free ratio (IFR) for assessment of functional significance of intermediate coronary artery lesions

FFR value

(Cut-off = 0.80)

SPECT-MPI

IFR value

(Cut-off = 0.89)

Pearson correlation

− 0.704

0.947

P value

< 0.001

< 0.001

N

25

25

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