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Figure 5 Plots of the myocardial contrast echocardiography-derived myocardial blood flow velocity (MBFV) index at baseline (open circles) and during hyperemia (solid circles) against quantitative coronary angiography (QCA)-derived percent diameter stenosis. The dotted line denotes the average value at baseline, whereas the solid line indicates the regression line for the data during hyperemia (y = 15.5{1 – Exp(0.019[x – 109.8])}, r = 0.53, p < 0.01). ATP = adenosine triphosphate.
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