实时三维彩色血流成像技术定量评价室间隔缺损分流量的初步探讨  

Quantification of shunt volume of ventricular septal defect by real-time three-dimensional color Doppler flow imaging: initial exploration

作　　者：谢明星[1] 蒲朝霞[1] 王新房[1] 方凌云[1] 卢晓芳[1] 杨亚利[1] 贺林[1] 

机构地区：[1]华中科技大学同济医学院附属协和医院超声影像科,湖北武汉430022

出　　处：《中国医学影像技术》2006年第4期487-489,共3页Chinese Journal of Medical Imaging Technology

基　　金：湖北省科技厅自然科学基金资助(4-259)。

摘　　要：目的探讨实时三维彩色血流成像技术(RT-3DCDFI)评价室间隔缺损分流量的价值。方法应用RT-3DCDFI成像技术采集46例单纯性室间隔缺损(VSD)患者的三维彩色分流信号数据,导入TomTec三维图像工作站,于收缩期采用八平面法勾画并计算分流束的彩色血流信号容积(SJV),并与二维频谱多普勒法QP-QS所测得分流量结果行相关性分析。结果①缺损直径小于或等于主动脉根部直径2/3的小、中VSD的SJV值与QP-QS值相关良好(r=0.87;r=0.79),且两者的均值无显著性差异(P>0.05);②缺损径线大于主动脉根部直径2/3的大VSD,RT-3DCDFI所测SJV值明显低估分流量(r=0.55)。结论RT-3DCDFI技术可从三维空间对VSD分流进行评估,为临床定量评估中小型VSD的分流提供了一种新方法。Objective To evaluate the use of real-time three-dimensional color Doppler flow imaging (RT-3D CDFI) in the noninvasive assessment of color Doppler shunt jet volume (SJV) in patients with isolated ventricular septal defect (VSD). Methods Fourty-six patients with VSD were examined by RT-3D CDFI. The shunt volume was manually outlined by the eight-plane method with TomTec 4D Cardio workstation. Comparative analysis was performed between the results of RT-3D CDFI and traditional two-dimensional methods. Results SJV of small and medium ventricular septal defects had good correlation with Q_P-Q_S respectively, which was obtained by frequency Doppler method (r=0.87 and r=0.79). However, SJV of large ventricular septal defects was underestimated by RT-3D CDFI (16.61 ml vs 68.13 ml, r=0.55, P<0.05). Conclusion This study indicates that RT-3D CDFI can provide a new reliable and accurate way to assess shunt blood flow of small and medium VSD.

关 键 词：实时三维超声心动描记术 彩色多普勒血流成像 室间隔缺损 分流量 

分 类 号：R541.1[医药卫生—心血管疾病] R540.45[医药卫生—内科学]