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  • Title: Evaluation of left ventricular volume using automatic border detection in children: a comparison with conventional off-line echocardiographic quantification.
    Author: Hashimoto I, Ichida F, Miura M, Okabe T, Shimura S, Uese K, Hamamichi Y, Tsubata S, Miyawaki T, Fukahara K, Murakami A.
    Journal: Acta Paediatr Jpn; 1998 Jun; 40(3):226-31. PubMed ID: 9695294.
    Abstract:
    BACKGROUND: Evaluation of the clinical usefulness of the one-line automatic border detection system for determination of left ventricular volume in children in comparison to the conventional off-line method. METHODS: Eighty consecutive patients in whom clear images were obtained by two-dimensional echocardiography were studied. Using the Hewlett-Packard Sonos 2500 with a 3.5 or 5.5 Mhz phased array transducer, all patients were studied in the apical four-chamber imaging plane for automatic border detection and apical four-chamber and two-chamber imaging planes for manual tracing. Left ventricular end-diastolic and end-systolic volumes were measured and compared using the bi-plane Simpson method. RESULTS: Left ventricular end-diastolic volumes obtained by automatic border detection correlated well but were slightly underestimated compared to those obtained by manual tracing (r = 0.98). Left ventricular end-systolic volumes obtained by automatic border detection also correlated well with those obtained by manual tracing (r = 0.96). Left ventricular ejection fractions compared favorably. However, left ventricular volumes obtained using the classical Pombo M-mode echocardiography showed poorer correlation with those obtained by manual tracing methods. CONCLUSIONS: Automatic border detection is a promising method for real-time estimation of left ventricular volume. In patients with good endocardial tracking, automatic border detection can be used for routine studies of cardiovascular disease, even in children.
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