新生儿及婴幼儿正常脑外间隙的磁共振成像变化  

Changes of Magnetic Resonance Imaging in Extracerebral Space of Normal Neonates and Infants

作　　者：杨复宾[1] 周珉[1] 盛茂[1] 王琪[1] 郭万亮[1] 

机构地区：[1]苏州大学附属儿童医院影像科,江苏苏州215003

出　　处：《实用儿科临床杂志》2011年第17期1355-1357,共3页Journal of Applied Clinical Pediatrics

摘　　要：目的研究新生儿及婴幼儿正常脑外间隙在磁共振成像(MRI)上随月龄变化的规律。方法回顾性分析375例无神经系统疾病的新生儿及婴幼儿脑部的MRI影像。年龄为出生～2岁;男203例,女172例。按月龄将其分为7组。使用SIMENS 0.35T的永磁MRI扫描仪成像,行自旋回波序列T1加权成像(T1WI)及T2加权成像(T2WI),在T2WI上测量额前、颞前脑外间隙、外侧裂及纵裂的宽度。结果新生儿及婴幼儿375例脑部MRI图像均可很好地显示额前、颞前、外侧裂及纵裂处脑外间隙。出生到4～6个月额前、颞前、外侧裂及纵裂处脑外间隙逐渐增宽,4～6个月时最宽,后逐渐减小。4～6个月时额前、颞前脑外间隙、外侧裂、纵裂的宽度为(3.73±1.47)mm、(4.53±2.06)mm、(5.56±1.75)mm、(3.62±1.25)mm。结论新生儿及婴幼儿正常脑外间隙在4～6个月时最宽,且MRI上脑外间隙演变具有一定的规律。Objective To study magnetic resonance imaging（MRI） variation of extracerebral space in normal neonates and infants with month age.Methods Brain MRI images of 375 cases of non-nervous system diseases in neonates and infants brain were reviewed,aged from birth to 2 years old,203 male,172 female,they were divided into 7 groups by months.A SIMENS 0.35 T permanent magnet MRI apparatus was used,with spin-echo T1-weighted imaging（T1WI） and T2-weighted imaging（T2WI）.The width of extracerebral space at the frontal,temporal,sylvian fissure,and intercerebral fissure were measured on T2WI.Results Three hundred and seventy-five cases of the extra-cerebral space MRI images at the frontal,temporal,sylvian fissure,and intercerebral fissure were displayed well.The extracerebral space widened from birth to 4-6 months gradually,the extracerebral space was the most wide during 4-6 months,the extracerebral space decreased gradually after 4-6 months.The width of extracerebral space at the frontal,temporal,sylvian fissure,and intercerebral fissure were（3.73±1.47） mm,（4.53±2.06） mm,（5.56±1.75） mm,（3.62±1.25） mm,respectively during 4-6 months of age.Conclusion The extracerebral space was the most wide during 4-6 months of age,and the MRI variation of extracerebral space has certain laws.

关 键 词：磁共振成像 脑外间隙 新生儿 婴幼儿 

分 类 号：R445.2[医药卫生—影像医学与核医学]