四维超声联合高分辨血流成像在胎儿肺静脉观察中的应用

Application of Four-dimensional Ultrasound with HD Flow in Evaluation on Fetal Pulmonary Vein

【目的】探讨四维超声联合高分辨血流成像(HD flow)在观察胎儿肺静脉中的应用价值。【方法】本研究纳入2015年6月-2016年6月在我院接受产前胎儿心脏超声检查的胎儿130胎。于胎儿四腔心切面分别应用彩色多普勒和高分辨血流成像观察并计数肺静脉的显示数目。在开启HD flow状态下,于胎儿四腔心切面采集心脏三维容积数据,利用图像后处理软件对容积数据分析重建,获取胎儿肺静脉的三维图像,观察并计数肺静脉的显示数目。对比三种方法对正常125例胎儿肺静脉的显示情况。对于肺静脉回流异常的5例胎儿,采用STIC联合HD flow技术对肺静脉进行三维重建,观察肺静脉的异常回流途径。【结果】HD flow对胎儿肺静脉的显示率要高于彩色多普勒,对于17~32周的胎儿四维超声联合HD flow可以更好的观察肺静脉的空间位置关系。【结论】在孕周较小时,STIC联合HD flow技术可更好地显示胎儿肺静脉,且三维重建图像更直观、立体,有助于理解其空间关系。

【Objective】To investigate the application value of four-dimensional ultrasound with high definition flow（HD flow）in the observation of fetal pulmonary vein.【Methods】From June 2015 to June 2016,130 fetuses in our hospital underwent prenatal fetal echocardiography were included in this study. Color Doppler and high definition flow imaging were used to observe and count the number of pulmonary veins in the fetal four chamber view. In the condition of opening HD flow,the 3D volume data was collected from the heart of the fetal four chamber view,and the 3D images of the fetal pulmonary vein were obtained by using the post processing software. Comparisons were made between the three methods for visualization numbers of the normal fetal pulmonary veins. For 5 cases of abnormal pulmonary venous drainage,STIC combined with HD flow technique was used to carry out three-dimensional reconstruction of pulmonary veins,to observe the abnormal drainage.【Results】The display rate of HD flow on fetal pulmonary veins was higher than that of color Doppler. For the 17 - 32 weeks fetal,four-dimensional ultrasound combined with HD flow could better observe the spatial location of pulmonary veins.【Conclusions】STIC combined with HD flow technology can display fetal pulmonary veins better in the second and early-third trimester of pregnancy,and three-dimensional reconstruction of the image is more intuitive,helpful to understand the spatial relationship.