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Left ventricular mass, derived from echocardiographic measurement of left ventricular wall volume, was compared with simple vectorcardiographic and electrocardiographic voltage measurements in 36 patients with left ventricular enlargement and 7 normal subjects. Left ventricular wall volume was obtained by subtracting the volume of the ventricular cavity, calculated as the cube of the ultrasound internal dimension, from the volume occupied by ventricular wall and cavity, calculated as the cube of the internal dimension plus twice the wall thickness. This method differs from those used hitherto and appears preferable on theoretical grounds.
Bennett et al. (Tue,) studied this question.