胎儿标本胸12椎体水平椎管发育的CT影像研究  

CT imaging on development of the fetal spinal canal of T12 vertebrae

作　　者：苗明明[1,2] 林祥涛[2] 崔志洁[1] 彭伟[1] 赵慧[3] 张忠和[3] 谢辉辉[2] 石岩[2] 

机构地区：[1]山东省济南市第五人民医院放射科,250022 [2]山东省医学影像学研究所磁共振诊断研究室 [3]山东大学附属省立医院医学影像科

出　　处：《中华解剖与临床杂志》2017年第3期177-180,共4页Chinese Journal of Anatomy and Clinics

基　　金：基金项目：国家自然科学基金（31371213）;山东省自然科学基金（ZR2013HM091）

摘　　要：目的CT影像测量胎儿标本胸12椎体（T12）水平正常椎管的形态、大小，并分析其随胎龄增长的发育趋势。方法利用64排螺旋CT对30例23～40孕周脊柱发育正常的胎儿标本进行扫描，并以T12椎体中份水平为中心进行3D重建，在T12椎体中份水平横断面图像上观察T12椎管的正常形态，使用ImageJ软件测量椎管的前后径、左右径和面积，计算出各胎龄所测径线的平均值，并对所测数据和胎龄作回归分析，分析其随胎龄增长的发育趋势。结果T12水平椎管可以清晰显示，呈类圆形，并随胎龄逐渐增大，其前后径、左右径及面积均随胎龄呈线性增长，线性回归方程分别为：％管前后径（mm）=0．126＋0．26×X胎龄（周），R2=0．857，P〈0．01；‰管左右径（mm）=-0．411＋0．274×X胎龄（周），R2=0．822，P〈0．01；‰管面积（mm2）=-52．09＋3．43×x胎龄（周），R2=0．911，P〈0．01。结论CT可清晰显示胎儿T，：椎体水平椎管形态；T12水平椎管各径线的大小与胎龄有良好的相关性，可以用来评估胎儿脊柱发育。Objective To explore the normal developmental condition of the fetal spinal canal of T12 vertebrae by using CT and analyze their development changes. Methods Spines of 30 fetal specimens of 23-40 weeks were scanned by 64-slices CT. Axial plane of the spinal canal of T12 vertebrae were reconstructed. There was no structural abnormality of the spine in these fetuses. Measurements obtained from the axial CTs included spinal canal anterior-posterior diameter, spinal canal width, and spinal cross-sectional area. Pearson correlation was made between gestational age and spinal canal. Results The spinal canal anterior-posterior diameter, width, and area of T12 vertebrae increased linearly with gestational age, the anterior-posterior diameter, equations of linear regression were ： Y（mm） = 0. 126 ＋ 0.26 × Xage （W） , R2 = 0.857, P〈0.01 ; the width, Y（mm） = -0.411 ＋0.274×Xago（w）; R2 =0.822, P〈0.01; the area, Y（mm2） = -52.09＋3.43×Xage（W）, R2 =0.911, P〈0.01, respectively. Conclusions The normal morphology of the spinal canal of T12 vertebrae can be clearly showed by CT, and the size of the spinal canal has a good correlation with gestational age. The diameter of the spinal canal of T12 vertebrae measured on CT imaging can be used to assess the spine development.

关 键 词：胎儿发育 胸椎 椎管 体层摄影术 螺旋计算机 

分 类 号：R714.5[医药卫生—妇产科学] R813[医药卫生—临床医学]