四川大学学报（医学版）Issue(2)：275-279,5.
血流向量成像技术在房间隔缺损右房流场可视化及肺体循环血流量比定量中的价值
Visualizaion of Right Atrial Flow Patterns and Quantification of Pulmonary to Systemic Flow Ratio in Patients with Atrial Septal Defect by Vector Flow Mapping
韦馨 1梁玉佳 1朱蔚 1唐红 1陈柳 1张炬倩 1李晨 1冯沅 1周文霞 1彭瑛 1黄鹤1
作者信息
- 1. 四川大学华西医院心内科 成都610041
- 折叠
摘要
Abstract
Objective To evaluate the ability of vector flow mapping (VFM) in visualizing right atrial flow and quantifying pulmonary to systemic flow ratio in patients with atrial septal defect (ASD). Methods VFM was performed on 30 patients with ASD and 50 healthy volunteers. The pulmonary to systemic flow ratio (Qp/Qs) was calculated using VFM and spectral doppler compared with that obtained through oximetric data derived from cardiac catheterization. Resnlts Blood streams from superior and inferior caval veins did not collide but turned forward, contributing to a forward clockwise vortex during systole on the subcostal bi-atrial plane in the healthy volunteers. The vortex was disrupted continuously by a left to right shunt in the patients with ASD during the hole cardiac cycle. The Qp/Qs measured by VFM was less angle-dependent in all the cases than the other methods. The mean value of Qp/Qs of the healthy volunteers calculated by apical three-chamber view and apical five-chamber view ranged from 0. 84 :1 to 1. 15 :1, which is consistent with the theoretical value 1 of no left to right shunts. The values of Qp/Qs of patients with ASD measured by VFM and spectral doppler showed no significant differences with those obtained through oximetric data C(2. 18±0. 48) vs. (2. 29±0. 76), P = 0. 29; (2.30±0. 91) vs. (2. 29± 0. 76), P=0. 863. However, the Qp/Qs value measured by VFM had a better correlation with the oximetric data than that measured by spectral doppler (r=0. 71, P<0. 001 vs. R=0. 38, P<0. 05). The inter-observer and intra-observer variability of Qp/Qs measured by VFM was 9. 84% and 9. 86% respectively. Conclusion VFM can visualize right atrial flow field in patients with ASD and quantify Qp/Qs in a more accurate way than spectral dopier.关键词
血流向量成像/超声心动图/心导管/肺、体循环血流量比/房间隔缺损/频谱多普勒Key words
Vector flow mapping/Echocardiography/Cardiac catheterization/Pulmonary to systemic flow ratio/Atrial septal defect/Spectral doppler引用本文复制引用
韦馨,梁玉佳,朱蔚,唐红,陈柳,张炬倩,李晨,冯沅,周文霞,彭瑛,黄鹤..血流向量成像技术在房间隔缺损右房流场可视化及肺体循环血流量比定量中的价值[J].四川大学学报（医学版）,2012,(2):275-279,5.
