| 杨敏,郑敏,顾晓宁,刘冬梅.超声观察胎儿外耳标准切面及观察时机[J].中国医学影像技术,2010,26(2):304~306 |
| 超声观察胎儿外耳标准切面及观察时机 |
| Fetal external ear observation on standard sections and the best time of check-up |
| 投稿时间：2009-08-18 修订日期：2009-10-07 |
| DOI： |
| 中文关键词: 胎儿外耳 超声检查,产前 标准切面 |
| 英文关键词:Fetal external ear Ultrasonography, prenatal Standard section |
| 基金项目: |
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| 中文摘要: |
| 目的 探讨超声观察胎儿外耳的标准切面及观察时机。方法 2212名17~40周、发育正常的胎儿按胎龄分成6组,对各组胎儿分别进行颈后横斜切面(A切面)、下颌横斜切面(B切面)、外耳旁矢状切面(C切面)及外耳冠状切面(D切面)的超声观察,记录不同孕周各切面胎儿外耳的获取数,并进行统计学分析。结果 2212例胎儿中,A切面共获取3454个外耳(获取率78.07%),B切面共获取1694个外耳(获取率38.29%),C切面共获取3454个外耳(获取率78.07%),D切面共获取2304个外耳(获取率52.08%)。同组A切面与C切面外耳获取率相同,但二者与B切面及D切面的外耳获取率差异有统计学意义(P<0.05);B切面与D切面外耳获取率在25~40周差异有统计学意义(P<0.01)。各切面胎儿外耳的获取率与孕周均呈负相关(P<0.01),即随着孕周的增加各切面胎儿外耳的获取率降低。结论 超声观察胎儿外耳方法简单易掌握,可应用于产前胎儿外耳畸形的筛查。A切面和C切面可作为超声观察胎儿外耳的标准切面,B切面和D切面可作为A切面和C切面的补充。观察胎儿外耳的最佳时期为孕17~24+6周。 |
| 英文摘要: |
| Objective To detect the fetal external ear observation on standard sections and the best time with ultrasonography. Methods Total 2212 normal fetuses 17-40 weeks of gestation were divided into six groups. Fetal ears were obtained on transverse-incline view at cervical vertebra level (section A) and mandible level (section B), on parasagittal view (section C) and coronal view (section D) at external ear level. Fetal ears were evaluated and analyzed statistically. Results Among 2212 normal fetuses, 3454 ears (78.07%), 1694 ears (38.29%), 3454 ears (78.07%) and 2304 ears (52.08%) were obtained on section A, B, C and D, respectively. The obtained-rate of fetal ears on section A was the same as section C at the same week of gestation, but was significant higher than that of section B and section D (P<0.05). The obtained-rate of fetal ears was statistical different between section B and section D at the groups of 25-40 weeks (P<0.01). The obtained-rate of fetal ears was negatively correlated with gestational age (P<0.01). Conclusion It is useful and easy to observe the fetal external ear with ultrasonography to detect fetal ear abnormalities. Section A and section C are recommended to be standard observation sections for fetal external ear. Section B and section D can be used as supplementary for section A and section C. The best time for fetal external ear observation with ultrasonography is 17—24+6 weeks gestation. |
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