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- W1482994981 abstract "Simultaneous contrast two-dimensional echocardiograms and contrast ventriculograms were analyzed for 19 cardiac cycles in 6 patients. Ventriculographic volume was underestimated by 40 ± 4.5% (p <.001) by the contrast echocardiograms, despite good correlation (r = 0.88). Discrepancies could not be assigned to changes in volume between studies nor to a lack of precise endocardial definition. Simultaneous imaging demonstrated that the ultrasonic transducer was located 33° cephalad to the cardiac apex. Although angiographic volume was severely underestimated, ejection fraction (r = 0.93) and stroke volume (r = 0.90) could be calculated from two-dimensional echocardiograms using regression equations." @default.
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- W1482994981 date "1982-03-01" @default.
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- W1482994981 title "Simultaneous contrast imaging of the left ventricle by two-dimensional echocardiography and standard ventriculography" @default.
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- W1482994981 doi "https://doi.org/10.1002/clc.4960050302" @default.
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