正常影像学表现ppt课件

1、第二章中枢神经系统第一节检查技术第一节正常影像学表现第一节学习要点第一节学习难点第一节一、正常X线表现平片1第一节一、正常X线表现平片2第一节一、正常X线表现平片3第一节一、正常X线表现平片4第一节一、正常X线表现平片5正常头颅平片正位正常头颅平片侧位正常蝶鞍图蝶鞍丈量第一节一、正常X线表现血管造影1第一节一、正常X线表现血管造影2第一节一、正常X线表现血管造影3正常脑血管造影线图正常脑血管造影图第一节一、正常X线表现血管造影4第一节一、正常X线表现血管造影5第一节二、正常声像图表现第一节三、正常CT表现平扫第一节 三、正常CT表现加强正常表现CT轴位1正常表现CT轴位2正常表现CT轴位3正常

2、表现CT轴位4正常表现CT轴位5正常表现CT轴位6第一节四、正常MRI 表现正常表现MRI冠状1冠状位 T1WI正常表现MRI冠状2冠状位 T2WI正常表现MRI矢状1矢状位 T1WI正常表现MRI矢状2矢状位 T2WI第一节MRI新技术功能性MRIfunctional MRI，fMRI 第一节MRS1第一节MRS2右额叶急性期脑梗死第一节DWI右侧大脑半球堵塞大脑中动脉供血区病例1两个梗死灶均未累及皮质脊髓束，病人肌力正常病例1 DTT病例2病例2 DTT病例3右侧皮质脊髓束受压无中断，治疗后右侧皮质脊髓束受压无中断，治疗后6天复查，压迫缓解天复查，压迫缓解病例3 DTT第一节PWI5 小时

3、小时病例CBFCBVLow CBF (blue )Normal CBVLess vessles低灌注：脑缺血2天后随诊低灌注区恢复天后随诊低灌注区恢复 CBF下降而 CBV正常区为缺血半暗带第一节fMRIBilateral inferior parietal lobules and occipital lobes activated3-D shape recognitionpure tones stimulusBilateral temporal lobes were lesser activated in hearing loss subjects but bilateral occipit

4、al lobes were more activated functional reorgnization in hearing loss subjects healthy subjectssensorineural hearing loss subjects Oral presentation in RSNA 2005Chinese words:Bilateral Brocas areasEnglish words:Bilateral cigulated gyrusPresented in RSNA 2004Bilingual semantic judgementRight-handed g

5、roupleft-handed groupright-handed group: left hemisphere dominant left-handed group: right hemisphere dominant mental calculationMusical scale:left amygdaline activated Scary music:bilateral amygdalines activated Amygdaline responsible for emotion Non-pointsSensory area: postcentral gyrusRight language pointsLeft language:WernickesLeft language pointsRight langu