Left Ventricular Ejection Fraction and Volume Calculations Using Three-Dimensional Echocardiography Open Access

[摘要] In a review encompassing 18 single- and multi-centre studies comparing echocardiography with magnetic resonance imaging, it was determined that three-dimensional echocardiography has greatly improved the calculation of left ventricular (LV) volumes. However, there is still a systematic underestimation of volume measurements, and experimental studies have yet to be performed. This project sought to assess the accuracy of current semi-automatic contour finding algorithms using an anatomically correct dynamic heart phantom. The contour algorithm resulted in an underestimation of up to 31% of the true volume. With manual correction this reduced to 21%. None of the semi-automatic contours followed completely the true ventricular border. The manual method of discs (MOD) technique was proposed as a method which may improve accuracy in patients with asymmetric ventricles; the largest difference was 9% of the true volume. Therefore, while currently available LV contouring algorithms further underestimate volumes in asymmetrical chambers, MOD is an accurate alternative.

[发布机构] University of Alberta

[效力级别] Echocardiography