Real-time Three-Dimensional Color Doppler Flow Imaging: An Improved Technique for Quantitative Analysis of Aortic Regurgitation
- Author:
Qing LU
1
;
Xiatian LIU
;
Mingxing XIE
;
Xinfang WANG
;
Jing WANG
;
Lei ZHUANG
Author Information
1. 华中科技大学同济医学院附属医院
- Keywords:
real-time three-dimensional echocardiography;
color Doppler flow imaging;
aortic regurgitation
- From:
Journal of Huazhong University of Science and Technology (Medical Sciences)
2006;26(1):148-152
- CountryChina
- Language:Chinese
-
Abstract:
The recently introduced real-time three-dimensional color Doppler flow imaging (RT-3D CDFI) technique provides a quick and accurate calculation of regurgitant jet volume (RJV) and fraction. In order to evaluate RT-3D CDFI in the noninvasive assessment of aortic RJV and regurgitant jet fraction (RJF) in patients with isolated aortic regurgitation, real-time three-dimensional echocardiographic studies were performed on 23 patients with isolated aortic regurgitation to obtain LV end-diastolic volumes (LVEDV), end-systolic volumes (LVESV) and RJV, and then RJF could be calculated. The regurgitant volume (RV) and regurgitant fraction (RF) calculated by two-dimensional pulsed Doppler (2D-PD) method served as reference values. The results showed that aortic RJV measured by the RT-3D CDFI method showed a good correlation with the 2D-PD measurements (r=0.93, Y=0.89X+3.9, SEE=8.6 mL, P＜0. 001) ; the mean (SD) difference between the two methods was -1.5 (9.8) mL. % RJF estimated by the RT-3D CDFI method was also correlated well with the values obtained by the 2D-PD method (r=0.88, Y=0.71X+14. 8, SEE=6.4 %, P＜0. 001) ; the mean (SD) difference between the two methods was - 1.2 (7.9) %. It was suggested that the newly developed RT-3D CDFI technique was feasible in the majority of patients. In patients with eccentric aortic regurgitation, this new modality provides additional information to that obtained from the two-dimensional examination, which overcomes the inherent limitations of two-dimensional echocardiography by depicting the full extent of the jet trajectory. In addition, the RT-3D CDFI method is quick and accurate in calculating RJV and RJF.
