胎儿心脏超声智能导航技术在获取胎儿超声心动图基本切面主要诊断要素中的应用价值

摘要

Objective To evaluate the clinical value of fetal intelligent navigation echocardiography (5D Heart) in the display of key diagnostic elements in basic fetal echocardiographic views.Methods Using volume probe,3D volume datasets of the 209 normal singleton fetuses in the second and third trimesters were acquired from a four-chamber view.After processing the datasets by using 5D Heart,9 cardiac diagnostic planes were acquired and then the image qualities of key diagnosis elements of the heart and great vessels were graded by 3 doctors with different experiences of performing fetal echocardiography.Results Two hundred and sixty-two volume datasets were acquired from 209 normal fetuses,including 53 volume datasets collected when cardiac apex was in different directions,satisfactory datasets failed to be acquired in 27 fetuses because of the maternal obesity,the artifacts of fetal movement,or other influencing factors.Two hundred and thirty-one volume datasets of 182 fetuses could be used for 5D Heart analyzing and displaying,and the displaying rate of 9 standard diagnostic views was up to 88.2％.No significant difference was found when comparing the grading results of one observer in different periods of time,the grading results between two experienced doctors and the grading results among the experienced doctor and one relatively inexperienced doctor (P ＞ 0.05).Conclusions 5D Heart has high reliability and repeatability in obtaining fetal echocardiographic diagnosis views and displaying fetal elemental diagnostic information.%目的 评价胎儿心脏超声智能导航(5D Heart)技术在获取胎儿超声心动图基本切面主要诊断要素中的应用价值.方法 使用容积探头对209例正常中晚孕期单胎胎儿采集以四腔心切面为初始切面的三维容积数据,采用5D Heart后处理成像,获取9个标准诊断切面,对8个诊断切面的要素化内容进行评分,分别对同一观察者不同时间评分结果、2个经验相对不足的医师评分结果及其分别与经验较丰富的医师的评分结果进行比较.结果 209例正常胎儿共获取262个容积数据包(其中53个容积数据包为部分病例胎儿心脏心尖朝向不同时多次采集),其中27例胎儿由于孕妇腹壁脂肪厚、胎儿运动伪影明显等因素未能获取满意的容积数据,182例胎儿的231个容积数据能够用于5D Heart分析与显示,5D Heart技术产生9个诊断切面的显示率为88.2％.同一观察者不同时间评分结果比较、2个经验相对不足的医师比较及分别与经验较丰富的医师比较,评分结果差异均无统计学意义(均P＞0.05).结论 5D Heart技术能清晰显示正常胎儿超声心动图的9个标准诊断切面,具有可重复性及稳定性.