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Figure 2 A, Increase in LV endocardial border length at end-diastole after the two doses of ALBUNEX (ALB) and the four doses of OPTISON (OPT). Open bars, all patients; filled bars, impaired function group. Doses of ALBUNEX in mL/kg, OPTISON in mL. *p < 0.001 for each dose of OPTISON versus each dose of ALBUNEX. B, Increase in LV endocardial border length at end-systole. Abbreviations and symbols as in A.