Zhao Dan, Wei Qiuju, Cai Ailu, Xie Limei, Wang Bing, Wang Xiaoguang
Department of Ultrasound, Shengjing Hospital of China Medical University, Shenyang, China.
Department of Ultrasound, Fushun Hospital of Shengjing Hospital Group of CMU, Fushun, China.
J Ultrasound Med. 2018 Jan;37(1):201-207. doi: 10.1002/jum.14326. Epub 2017 Jul 14.
The aim of this study is to compare two different methods in assessment of the position of fetal conus medullaris (CM) and to explore the significance for assessment of CM.
This study included both normal fetuses and those with the diagnosis of fetal spinal lesions. The position of fetal CM was performed sonographically using two methods: location of CM in relation to the vertebral body (CM level) and measurement of the conus sacrum (CS) distance.
The results showed that intra-observer and interobserver concordance was high for the two methods, both in the normal and abnormal groups. There was significant association between femur length and CS distance (R = 0.917) and between gestational age and CS distance (R = 0.892).
We propose the combined use of CM level location and CS distance measurement for the prenatal diagnosis of fetal spinal lesions for complementary needs.
本研究旨在比较两种不同方法评估胎儿圆锥(CM)位置,并探讨其对CM评估的意义。
本研究纳入正常胎儿及诊断为胎儿脊柱病变的胎儿。采用两种超声方法确定胎儿CM位置:CM相对于椎体的位置(CM水平)和圆锥-骶骨(CS)距离测量。
结果显示,正常组和异常组中,两种方法的观察者内和观察者间一致性均较高。股骨长度与CS距离(R = 0.917)以及孕周与CS距离(R = 0.892)之间存在显著相关性。
我们建议联合使用CM水平定位和CS距离测量进行胎儿脊柱病变的产前诊断,以满足互补需求。