胎儿三维超声在临床中的应用价值

Application Value of Three-dimensional Ultrasound of the Fetal in the Clinic

目的：研究胎儿三维超声在临床中的应用，并与二维超声进行比较。材料和方法：孕妇220例，孕龄6～12周75例，13-28周105例，29～40周40例。使用的仪器为三维超声工作站和三维彩超机容积探头。图像采集方法：用扇形自由扫查方式匀速采集图像；或用容积探头自动采集闭像。图像采集后，根据研究的需要进行表面或透明三维重建。结果：220例中有205例三维图像显示满意，成功率93．2％；查出无脑儿，脑积水、内脏外翻、死胎各1例，胚胎停育5例，与二维图像比较，二维图像更能清楚地显示胚胎发育过程中三维形态的演变，能清楚地显示胎儿头面体表结构及脊柱肋骨结构，图像直观，立体感强。结论：胎儿三维超声明显优于二维超声，能直现显示胎儿头面体农结构及先天畸形，具有极高的临床应用价值。

Objective： Study or Application value of three-dimensional ultrasound （ 3D US ） of the fetal in the clinic. The images of twodimensional ultrasound （ 2D US ） were compared with ones of 3D US. Materials and Methods： In this study, 220 pregnancies were observed including 75 cases with 6-12 weeks gestational age, 105 cases with 13-28 weeks, and 411 cases with 29-411 weeks. Applying devices were 311 US workstation connected with ordinary 2D US device anti 3D US device with special volume probe . These fetals were first examined with ordinary 2D US, then were examined with 3D US selected best US window, Imaging data of 3D US were acquired throug free-hang scanning with fan scanning methods. Surface rendering and transparent rendering were used according to studing purpose, Results： 3D US images were obtained successfully of 2115 cases in 220 cases （ 93.2%）. Nine fetal anomalies were detected including anencephalus, hydrocephalus, eversion of veserer and fetal dealh 1 case respectively, embryo developmental arrest 5 cases. 3D US imaging were superior to 2D imaging evidendy. The shape of embryo, surface structure fetal face and body, and spine and rib were showed clearly. Conclusion： 3D US of fetal can provide more plentiful information in display of surface structure fetal face and body and congenital anornaties than 2D US. It plays an important part in the clinical applications.