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Figure 2 Linear regression analyses including Bland-Altman plots of differences (11) between intracoronary and Doppler echocardiographic measurements. Some symbols represent more than one pair of data. (A) Comparison of intracoronary vs. echocardiographic baseline average peak velocity (bAPV) in group 1 and group 2; (B) comparison of intracoronary vs. echocardiographic hyperemic average peak velocity (hAPV) in both groups; (C) comparison of intracoronary vs. echocardiographic coronary flow velocity reserve (CFVR) in both groups. Open circle = group 1; filled circle = group 2. ICD = intracoronary Doppler; SD = standard deviation; SEE = standard error of estimate; TTDHE = transthoracic Doppler harmonic echocardiography.
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