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FIG 1. Scatter plot of poststenotic flow versus the side-to-side ratio of EDVs. The abscissa indicates the poststenotic flow. Dotted line and shaded area indicate the EDV ratio at 1.0 and the range between 1.2 and 1.6, respectively. The line was drawn on the basis of the following equation: ED ratio = 2.16 x (poststenotic flow)–0.32; r = 0.63.
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