Objective To establish the plane strain model of brain tissues on mid-sagittal plane and discuss the relation between the brain tissue deformation and brain injury. 目的建立人体正中矢状平面头部组织的平面应变模型,探讨脑组织变形与大脑损伤间的关系。
Methods Sagittal images of lumbosacral canal fat on MRI T_ ( 1) WI in 260 normal adults were observed. The distribution characters of the fat were studied on mid-sagittal plane. The thickness of anterior and posterior epidural fat and the canal diameter were measured and analyzed. 方法在MR正中矢状面T1WI上观察了260例正常成人腰骶段椎管内脂肪的分布特点,并测量脂肪厚度及椎管前后径,对测量结果行统计学分析。