高分辨率血流联合时间-空间复合成像技术对帆状胎盘的诊断价值

目的探讨高分辨率血流(HD-FLOW)联合时间-空间复合成像(STIC)技术对帆状胎盘的诊断价值。方法回顾性分析经超声诊断为帆状胎盘的51例胎儿(VCI组)的HD-FLOW和STIC图像资料,另选取同期正常胎儿51例为对照组,比较两组脐动脉血流频谱参数,包括收缩期峰值流速与舒张末期流速比值、搏动指数及阻力指数的差异,并根据产后情况分析HD-FLOW联合STIC技术对帆状胎盘的诊断效能。结果VCI组胎儿脐动脉血流频谱各参数均略高于对照组胎儿,但差异均无统计学意义。51例帆状胎盘胎儿中有45例均获得了脐带胎盘插入点脐血管立体直观图,HDFLOW联合STIC对帆状胎盘的诊断符合率高于二维联合HD-FLOW技术(95.7%vs.91.1%),但差异无统计学意义。结论HD-FLOW联合STIC技术可用于辅助诊断帆状胎盘,具有重要的临床价值。

Application value of high definition flow combined with spatio-temporal image correlation in the diagnosis of velamentous cord insertion

Objective To explore the clinical value of high definition flow(HD-Flow)combined with spatio-temporal image correlation(STIC)in the diagnosis of velamentous cord insertion(VCI).Methods A total of 51 cases of VCI diagnosed by HD-Flow and STIC were selected as VCI group,and 51 gestational age-matched healthy fetuses were selected as control group.Umbilical artery blood flow spectrum parameters were measured,including S/D ratio,pulsatility index(PI)and resistance index(RI).According to postnatal results,the diagnostic efficacy of HD-Flow combined with STIC in the diagnosis of VCI were compared.Results The parameters of the VCI group were slightly higher than those of control group,but there were no statistical significant.In 45 of 51 VCI fetues,STIC images of the umbilical cord placental insertion point were obtained,The diagnostic coincidence rate of HD-Flow combined with STIC was higher than that of two-dimensional combined with HD-Flow(95.7%vs.91.1%),but there was no significant difference.Conclusion HD-Flow combined with STIC can be used to assist the diagnosis of fetal VCI,and this technique has the significant clinical value.