七年制医学课件影像诊断医学影像诊断学复习笔记四

《七年制医学课件影像诊断医学影像诊断学复习笔记四》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、中枢神经系统1急性硬膜外血肿《影像诊断学》教研室重庆医科大学附属一院颅骨引言血肿与脑表面接触缘清楚。影像学检查对中枢神经系统疾病的诊断很重要。不跨颅缝。传统的X线检查方法应用范围限度很大。常有轻微占位表现。80年代以后诊断主要靠CT、MRk常发生于受伤部位。二检查方法2急性硬膜卜•血肿（一）X线检杏颅骨头颅平片：主要用于了解：血肿范围较人，多跨越颅缝，厚度较薄。颅骨骨折常有明显占位表现。颅骨肿瘤常发生于对冲伤部位。颅骨先犬性或发育异常3急性脑脑血管造影：DSA技术，适用症：脑60mm侧脑室体层而2,脑膜瘤的CT表现？80-100mm脑室上层而3,急

2、性硬膜外及硬膜下血肿CT表现？（三）头颅MRI图像◎DiagnosisforDiseasesofLiverandSpleen1轴位withUltrasonography肝脾疾病超声诊断2矢状位◎PreparationsbeforeExamination3冠状位1.fasting（禁食）formorethaneighthours.四常见病的CT>MRI表现2.performingbeforebariummeal（饮餐）andgastroscopy（—）急性外伤性颅AnatomyandNormalUltrasonogramof分类：TheLiver肝脏

3、解剖及正常声像图-急性硬膜外血肿口人聞01!1丫■■急性硬膜卜血肿Theliveristhelargestorganinthehumanbodyandis"急性脑Therearethreefissures（裂隙）thatfbnnaH-shapedditch多为等信号。onthevisceralsurface（脏［fll,inferiorsurface）oftheliver七年制医学影像诊断学复习笔记（四）2005-12-2MadeByVictor@Class3Grade2002Page1of7anddividetheliverintofourlob

4、es（叶）:theright,quadrate（方叶）andcaudate（尾状叶）lobe.Thethreefissuresarethefossae（凹陷）pressedinferiorvenacava（IVC）andgallbladder,tcrcs（roundligament圆韧带）andligamentumandthe（静脉韧带），andportahepatis（肝门）.）.PosteriorviewnNormalsonogramsfeaturesof1.ShapeandContourShape:Theshapeoftheliveronso

5、nogramaccordingtothesectionwescan.Itcanpresentawedge（楔形）oratriangle（三角形）.bulTseyeContour:Thereisahyperechoiclinearoundthethatissmoothandregular.Itj_stheechoofliverjscapsule.2.SizeThemaximalobliquediameter（最人氽斗径islessthan14cm.Thelongitudinaldimensionandthethicknessofthe,lobearc

6、within9cmand6cm,respectively.3.Parenchymaltexture（实质）Onthesonogram,thenormalliverparenchymahashomogeneousecho-texture.4.1ntrahepaticvesselsandductsOnsonogram,withinthehomogeneousparenchymaliethethin-walledhepaticveins（HV,肝静脉）,thebrightlyreflectiveportalveins（PV,门静脉）,hepaticart

7、eries（肝动脉）andbileduct（BD,胆管）.Thenormalinternaldiametersofthosevesselsductsareasfollows:PV:l-1.2cmHV:0.5-0.9cmcommonbileduct,CBD（flU.总管）：0.4-0.6cmII・UltrasonicDiagnosisofLiverDiseasesCategoriesofLiverdisease：diffuselesionsfocallesionshepatictumor，液彳匕Hepatictrauma・Hcpatictranspl

8、ant1.SimpleCystshapeandwall:Theshapeofthecystisroundandwallsa