实时三维时空关联成像操作经验对检测胎儿室间隔缺损的影响

摘要

目的 探讨有或无实时三维超声时空关联成像(STIC)操作经验的医师对胎儿室间隔缺损(VSD)检出的影响.方法 选取来我院行产前超声筛查的96例可疑先天性心脏病(CHD)胎儿,由2名不同STIC操作经验的超声医师进行产前筛查.其中1名有STIC操作经验(2.5年),另1名为初学者(仅经过短时培训).记录2名医师胎儿室间隔缺损的检出例数,对检出情况进行比较.结果 96例胎儿中,2名医师共同检出的VSD病例39例,医师1单独检出的病例为3例,医师2单独检出的病例为1例.2名医师检测VSD的检出情况比较无显著差异(x2=0.25,P>0.05).结论 应用STIC检查胎儿VSD可降低对检查人员经验的依赖,与传统二维超声相比具有技术优势.%Objective To determine the operation experience of four-dimensional ultrasound with spatio-temporal image correlation impacted on the detection rates of fetal ventricular septal defect (VSD). Methods 96 fetuses at high risk of CHD were examined by four-dimensional(4D) with spatio-temporal image correlation(STIC) were evaluated by two blinded independent examiners. One examiner had operated 4D STIC about two and a half years (examiner 1),and the other one was beginner (examiner 2). The detection rates of fetal VSD were calculated and compared.Results 42 cases of fetal VSD were detected by examiner 1, and 40 cases were detected by examiner 2. Among which, 3 cases were detected by examiner 1 alone, and 1 cases were detected by examiner 2 alone. Compared to the detection rates of fetal VSD by 4D STIC,examiner 1 and examiner 2 were not significantly different(x2 = 0.25,P＞0.05). Conclusions 4D STIC shows less rely on the experience of sonographers, and represents a better technique to detect fetal VSD and promises to become the method of choice.