Abstract 13681: Feasibility of Single-Beat Full-Volume Capture Real-Time Three-Dimensional Echocardiography for Quantification of Right Ventricular Volume: Validated by Cardiac Magnetic Resonance Imaging

Abstract

Background: The lack of a suitable noninvasive method for assessing right ventricular (RV) volume and function has been a major deficiency of two-dimensional (2D) echocardiography. The aim of our study was to test the feasibility of single-beat full-volume capture real-time three-dimensional echo (RT3DE) imaging system for evaluating RV volumes and function validated by cardiac magnetic resonance imaging (CMRI).

Methods: Sixty-one subjects (16 normal subjects, 20 patients with hypertension, 16 patients with pulmonary heart disease and 9 patients with coronary heart disease) were studied. RV volume and function assessments using RT3DE were compared with manual tracing with CMRI as the reference method.

Results: Fifty-nine of 61 consecutive patients (96.7%; 36 male, mean age, 62±15 years) had adequate three-dimensional echocardiographic data sets for analysis. The mean RV end diastolic volume (EDV) was 105±38 ml,end-systolic volume (ESV) was 60±30 and RV EF was 44 ± 11% by CMRI; and EDV 103±38 ml, ESV 60±28 ml and RV EF 41± 13% by 3DE. The correlations and agreements (Bland and Altman) between measurements estimated by two methods were shown in figure.

Conclusion: Majority of the patients with or without heart diseases had adequate three-dimensional echocardiographic images. Compared with CMRI, single-beat full-volume capture real-time three-dimensional echo can accurately estimated RV volume and function.