Evaluation of aorta's compliance after repair of coarctation of aorta using pulse wave velocity of MRI
10.3969/j.issn.1002-1671.2017.10.023
- VernacularTitle:主动脉缩窄术后磁共振脉搏波传导速度法评估主动脉顺应性
- Author:
Qiong YAO
1
;
Xihong HU
;
Quanli SHEN
;
Zhongwei QIAO
;
Guoying HUANG
Author Information
1. 复旦大学附属儿科医院 放射科
- Keywords:
coarctation of aorta;
magnetic resonance imaging;
phase contrast sequence;
pulse wave velocity
- From:
Journal of Practical Radiology
2017;33(10):1584-1587,1604
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate aorta's compliance after repair of coarctation of the aorta (CoA)using the pulse wave velocity (PWV)of MRI.Methods A retrospective analysis of cardiac MR images in 22 patients after repair of CoA was performed.PWV was measured and calculated with phase contrast MRI,and echocardiography was performed to measure both ventricular function and myocardial thickness during the same period.Age and sex-matched 22 normal subjects were served as a control group and their aortic PWVs were measured.Results The averaged PWV in study group was significantly higher than that in control group [(4 .42 ± 3 .02 )m/s vs (2 .73 ± 0 .76 )m/s,P =0.02].In study group,the PWV value of children with moderate anastomotic stenosis was the highest. ROC curve analysis showed the highest sensitivity and specificity could be achieved to distinguish the mild or moderate anastomotic stenosis when the threshold for PWV was 3.37 m/s.No significant correlations were found between left ventricular end-diastolic volume,left ventricular end-systolic volume,ejection fraction,left ventricular thickness and PWV.Conclusion PWV is increased in children after repair of CoA.Significant aortic remodelling can be observed in patients with moderate anastomotic stenosis.
