摘要
目的探讨眦耳线与前联合一后联合（AC．PC）线于矢状平面投射的夹角在神经外科立体定向手术中的意义及应用。方法采用3．0T多源MRI机扫描中国华南地区120例汉族成人健康志愿者的颅脑图像，计算眦耳线与AC．PC线在矢状平面投射夹角，并测量前后联合间径、外耳门中点至AC．PC平面垂直距离，分析比较3组数据在性别、年龄间的差异性，并对测得数据进行临床验证。结果华南地区正常汉族成人眦耳线与AC．PC线平均投射夹角为12．03°±1．11°，其中男性12．17°±1．06°，女性11．89°±1．14°：前后联合间径平均为23．74mm±0．95min，其中男性24-35mm±0．64mm．女性23．14mm±0．95mm：垂直距离平均为48．69mm±4．03mnl，其中男性49．57mm±3．10mm，女性47．82mm±4．61mm。经临床验证，所得AC—PC平面与实际AC，PC平面偏差角度为1．56°±0．63°。结论在不同年龄、性别人群中眦耳线与AC—PC线在矢状平面投射夹角相对稳定，以眦耳线作为基线，结合所测夹角与垂直距离，可在体表勾画出AC．PC投影线，以此调整定向头架安装获得AC—PC平面具有较高的准确性与可重复性．亦可以作为华南地区汉族成人脑结构重要的参考值。
Objective To explore the significance and application of the angle between the canthomeatal line （CML） and the anterior commissure-posterior commissure （AC-PC） line in the sagittal plane projection in stereotactic neurosurgery. Methods Quantitative MRI was performed in a crosssectional analysis of 120 normal volunteers from south China; the angle between the canthomeatal line and the AC-PC line in the sagittal plane projection, the length of the intercommissure line, and the vertical distance from external auditory canal midpoint to the AC-PC plane were measured and matched for age and gender. Results The average angle between the CML and the AC-PC line in the sagittal plane projection of all South China adult brains is （12.03± 1.11）° , which is （12.17± 1.06）° in male and （11.89±1.14）° in female. The average length of AC-PC line is （23.74±0.95）° mm, which is （24.35±0.64）° mm in male and （23.14±0.95）° mm in female. The average length of the vertical distance from external auditory canal midpoint to the AC-PC plane of all is （48.69±4.03） mm, which is （49.57±3.10） mm in male and （47.82±4.61） mm in female. Clinical validation showed that the deviation angle to the actual AC-PC plane was （1.56±0.63） . Conclusion The angle formed by CML and the AC-PC plane is stable in adults of different gender and ages; taking CML as a baseline, the surface projection of AC-PC line can be drew with the angle and the vertical distance, and then, the AC-PC plane by adjusting the directional headstock can be obtained with high accuracy, repeatability and maneuverability; therefore, these datacan be used as a valuable reference of adult brain structure of Han nationality in South China.
出处
《中华神经医学杂志》
CAS
CSCD
北大核心
2013年第6期617-620,共4页
Chinese Journal of Neuromedicine
基金
国家临床重点建设专科资助项目
关键词
立体定向
前联合
后联合
眦耳线
核磁共振
Functional stereotaxis
Anterior commissure
Posterior commissure
Canthomeatal line
Nuclear magnetic resonance
