Materal and Methods: 50 cases (100 hemipheres) of normal brain with edal son of SE T1WI and T2WI were chosen on Resonex 0. 38T MRI system.

• 材料和方法：收集50例（100个半球）的正常人群，均经SE序列横断面MRI扫描T1、T2加权成像，两位医生双盲法阅片并记录脑沟回的解剖特点。