国人大脑外侧裂MRI立体定向解剖学研究

目的: 探讨基于MRI图像的大脑外侧裂立体定向解剖学及其在脑立体定向手术中的意义.方法: 采集30名健康成年自愿者的脑MRI图像,经图像转换和配准,在标准三维立体坐标系中测量,以外侧裂的外侧缘为起点,向内沿X轴方向每3 mm为一取样点直到岛盖内侧面,记录各取样点的X、Y值,Z值为所在层面与AC-PC层面间层数与层距的积,统计所有取样点的三维坐标值,建立大脑外侧裂三维立体定位数据集.将所有外侧裂外侧缘取样点坐标值进行分析,绘制其在矢状和冠状面上的投影图.结果: 成功构建大脑外侧裂立体定位数据集;对30例出外侧裂外侧缘的投影图进行分析,找出了外侧裂的走行特点,并求出了回归方程.结论: 大脑外侧裂立体定向解剖学研究,可为脑的立体定向手术及脑图谱的建立提供解剖学资料.

The anatomical study of stereotactic MRI of sylvian fissure in Chinese people

Objective: To explore the stereotactic anatomy of sylvian fissure based on the MRI,and its significance in brain stereotactic operation.Methods: The brain MRI images of 30 healthy people were collected and conversed.The values of X and Y-axis at each sample-point,which was located every 3 mm along the X direction of the outer edge of sylvian fissure to the inner side of insula were measured,and the Z value was the product of AC-PC layers and layer distance.The three-dimensional location data set of sylvian fissure were established by X,Y and Z-axis values.The coordinate values of each sample-point in the outer edge of sylvian fissure were analyzed to draw their projections in the sagittal and coronal plane.Results: The stereotactic data set of sylvian fissure was established successfully.The projection picture in the sagittal and coronal plane of sylvian fissure was successfully drawed,and its multiple linear regression equation was calculated.Conclusions: The stereotactic anatomy of sylvian fissure can provide the data for stereotactic surgery of brain,and establish brain atlas.