Echocardiographic Left Ventricular Volume Determination by Direct Measurements of the Major and Minor Axes : SYMPOSIUM ON EVALUATION OF CARDIAC FUNCTIONS THROUGH NON-INVASIVE TECHNIQUES

概要

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Major and minor axes of the left ventricle were measured by single beam echocardiography in ten cardiac patients and the measurements and calculated volumes by formula V=π/6D^2L were compared with the angiocardiographic estimates. There was a favorable correlation between echocardiographic and angiocardiographic major axis demention (r=0.79), left end-diastolic volume (r=0.96), and ejection fraction (r=0.81). On the contrary, left end-diastolic volume calculated by formula V=D^3 was less correlated with angiocardiographic estimates (r=0.93) and the former had a tendency to overestimate the volumes where D exceeded 6.5 cm. these data indicate that in cases with markedly enlarged left ventricle, the use formula V=π/6D^2L is a more accurate predictor of volumes than formula V=D^3.
社団法人日本循環器学会の論文
1977-06-20