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Figure 1 (A) Analysis of left ventricular (LV) volume using three-dimensional echocardiography. The figure demonstrates selection of one image (upper right), automated contour-tracing (upper left), superimposition of all contours in three-dimensional space (lower left), and the resulting time-volume curve (lower right). (B) Analysis of LV volume using magnetic resonance imaging. The position of apex and base is shown on the longitudinal plane images, and endocardial and epicardial borders are traced in the short-axis views. EDV = end-diastolic volume; EF = ejection fraction; ESV = end-systolic volume; LVM = left ventricular mass.
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