头颅断层解剖课件.pptx

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1、头颅影像学 MRI常用的序列 T2DWIFLAIRFLAIRFLAIRFLAIRMS患者MRI脑干脑室旁丘脑颞叶半卵圆中心皮质下多发病灶n 同心圆硬化 MRI表现:环型同心圆 强化 FLAIR更著T1强FLAIRT2T14.MRI可发现 脑桥基底部特征性 蝙蝠翅膀样病灶 呈对称分布 T1W低信号 T2W高信号 无增强效应 甲醇中毒甲醇中毒有机溶剂慢性中毒有机溶剂慢性中毒THANK YOUSUCCESS2023-1-2927可编辑有机溶剂慢性中毒有机溶剂慢性中毒三氯乙烷中毒三氯乙烷中毒氯酸钾中毒氯酸钾中毒有机汞中毒有机汞中毒急性氰化物中毒急性氰化物中毒海洛因中毒脑病海洛因中毒脑病一氧化碳中毒迟发

2、脑病一氧化碳中毒迟发脑病一氧化碳中毒迟发脑病一氧化碳中毒迟发脑病慢性获得性肝脑变性慢性获得性肝脑变性肾性脑病肾性脑病MRI显示右颞枕叶大面积脑梗死(A:T1WI,B:T2WI)右侧外侧裂池明显变窄,脑沟几乎消失 CT显示SAH脑池内高密度影 图CT示右横窦血栓形成 图 MRI示上矢状窦血栓形成n 女,41岁.头痛,呕吐,伴 精神失常,智能减退1周T1WIT1WIT1WIDWIDWIonsetT2WIT2WIT2WICTCTn 1月后MRI:病灶显著缩小,T1WI高信号&T2WI低信号 -说明出血大脑深静脉血栓形成T2WI1 month laterT2WIT2WIT2WIT1WIT1WIT1WI

3、T1WICJD的MRI+Creutzfeldt-Jakob病 肌阵挛痴呆+特征性EEGCT检查纹状体黑质变性n 双侧壳核低密度灶MRI显示壳核苍白球T2低信号(铁沉着)早期病例可与Parkinson病区别MRI显示:小脑脑干萎缩 第四脑室&脑池扩张 小脑萎缩桥脑萎缩四脑室扩张矢状位水平位(5)Arnold-Chiari畸形进展缓慢的脑干胶质瘤CTT1强T1T2p 经常不断地学习,你就什么都知道。你知道得越多,你就越有力量p Study Constantly,And You Will Know Everything.The More You Know,The More Powerful You Will Be写在最后谢谢大家荣幸这一路,与你同行ItS An Honor To Walk With You All The Way演讲人:XXXXXX 时 间:XX年XX月XX日

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