正常颅脑正常CT解剖_桂林医学院影像学教研室_邱维加.ppt

Copyright 2003 by Qiu weijia,1,正常颅脑正常CT解剖,桂林医学院影像学教研室 邱维加,Copyright 2003 by Qiu weijia,2,一、颅骨(Skull),颅骨由额、顶、颞骨（各两块）及枕骨、蝶骨、筛骨组成。,Copyright 2003 by Qiu weijia,3,二、脑膜(Meninges),脑膜分三层；硬脑膜(Dura)、蛛网膜(Arachnoid)、软脑膜(Pia)。(一)硬脑膜对保护脑组织很重要，扫描尤其是增强扫描时可清楚地分辨大脑镰和小脑幕。,Copyright 2003 by Qiu weijia,4,脑池系统(Cistern),蛛网膜与软脑膜之间的间隙内含脑脊液，称为脑池。,Copyright 2003 by Qiu weijia,5,主要的脑池,1.小脑延髓池：是脑池中最大的一个。2.桥池：在桥脑的腹侧，内有基底动脉通过。向两侧伸展至小脑桥脑角而形成桥脑小脑角池。3.脚间池：中脑脚间窝部。4.外侧裂池：外侧裂部。5.四叠体池：四叠体后方，其内有大脑大静脉通过，又称大脑大静脉池。6.鞍上池：蝶鞍上方,Copyright 2003 by Qiu weijia,6,三、大脑半球(CerebralHemispheres),大脑由中线的半球间裂分为左右两半,中间由胼胝体连接。大脑半球的沟、裂将大脑皮层分为额、颞、顶、枕和岛叶。髓质占大脑半球体积的大部分，由神经核团及皮层下纤维构成。,Copyright 2003 by Qiu weijia,7,四、间脑(Diencephalon),连接大脑半球和中脑，包括丘脑、丘脑下部、丘脑底部和丘脑上部组成。,Copyright 2003 by Qiu weijia,8,五、脑干(Brainstem),包括中脑、桥脑和延髓，上接间脑，下连延髓。与小脑的上、中、下脚相连。,Copyright 2003 by Qiu weijia,9,六、小脑(Cerebellum),小脑位于桥脑和延髓的后方，借小脑幕与枕叶相隔。,Copyright 2003 by Qiu weijia,10,七、脑室系统(Ventricular System),脑室系统包括左、右侧脑室、第三脑室、中脑导水管和第四脑室。,Copyright 2003 by Qiu weijia,11,Copyright 2003 by Qiu weijia,12,Copyright 2003 by Qiu weijia,13,Copyright 2003 by Qiu weijia,14,Copyright 2003 by Qiu weijia,15,Copyright 2003 by Qiu weijia,16,Copyright 2003 by Qiu weijia,17,Copyright 2003 by Qiu weijia,18,Copyright 2003 by Qiu weijia,19,Copyright 2003 by Qiu weijia,20,Copyright 2003 by Qiu weijia,21,Copyright 2003 by Qiu weijia,22,Copyright 2003 by Qiu weijia,23,Copyright 2003 by Qiu weijia,24,