摘要
目的探讨三维超声体表成像技术及其在产科临床的应用价值。方法采用GE730对16孕周以上的3810例胎儿进行产科常规检查，再用三维超声重点观察胎儿体表结构，进行面部、脊柱、四肢等进行三维体表重建，统计并比较超声诊断与随访结果。结果16—24、25～32、33～40孕周体表成像成功率分别为602％、90．7％、64．0％。共检出体表畸形16例。二维超声检查诊断正确者12例，4例体表畸形胎儿二维超声检查不能作出明确诊断，由三维超声进一步检查确诊。误诊1例为胎儿足内翻，出生后证实正常；漏诊1例单纯唇裂，2例小耳畸形，1例多指畸形，出生后随访证实。胎儿体表成像的最佳时间为25～32孕周。三维超声对胎儿体表畸形检出的敏感性、准确性较二维超声高，但两者的差异无统计学意义（P〉0．05）。结论三维超声能更直观、立体地显示胎儿头面及四肢的体表结构，在筛查胎儿体表畸形方面与二维超声联合应用，可提高胎儿体表畸形的检出率。
Objective To evaluate the clinical application of three-dimensional （3D） sonography surface imaging technology in obstetrics. Methods Two dimensional （2D） routine obstetric ultrasonography was performed in 3810 fetuses over 16 weeks with GE730; then 3D reconstruction was made focusing on the surface structures including face, spine and limbs. The ultrasound diagnosis was compared with follow-up results. Results The success rates of surface imaging for fetuses 16 - 24 weeks, 25 - 32 weeks, 33 - 40 weeks were 60.2%, 90.7%, 64.0%, respectively. Sixteen cases of surface malformation were detected, including 12 cases diagnosed by 2D ultrasound and 4 was missed by 2D but diagnosed by 3D ultrasound, 1 normal case was misdiagnosed as foot inversion. One case of cleft lip, 2 cases of microtia and 1 case of multi-finger deformity were missed by ultrasonography, and confirmed by subsequent medical follow-up. Conclusion The best time for fetal surface imaging is 25 - 32 weeks. 3D ultrasound shows the evolution of embryonic development more clearly than 2D ultrasound, and the combination of two techniques may increase the detection rate of fetal surface malformation.
出处
《浙江医学》
CAS
2010年第4期496-497,500,共3页
Zhejiang Medical Journal
关键词
三维超声
胎儿
体表成像
3D ultrasound Fetus Surface imaging
