肝脏解剖与常见病影像诊断ppt课件

《肝脏解剖与常见病影像诊断ppt课件》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、TheHepaticLesion:RadiologicAssessmentTheAffiliatredhospitalofNBUWangJIANHUAwoxingw@sina.com2014-12-29CASEObjectivesNormalliveranatomyImagingtechniquesCommondiseasesimagingdiagnosisDiffusediseasesFocaldiseasesAnatomyoftheliversegmentsTwodifferentaspects:morphologicalanatomyandfunctional

2、anatomy.C.Couinaud(1957)dividedtheliverintoeightfunctionallyindepedentsegments.Thisclassificationwillbepresentedherewithseveralillustrations.CouinaudclassificationDividestheliverintoeightfunctionallyindepedentsegments.Eachsegmenthasitsownvascularinflow,outflowandbiliarydrainage.Inthece

3、ntreofeachsegmentthereisabranchoftheportalvein,hepaticarteryandbileduct.Intheperipheryofeachsegmentthereisvascularoutflowthroughthehepaticveins.PortahepatisSecondPortahepatisRighthepaticveindividestherightlobeintoanteriorandposteriorsegments.CrosstransversePortalveindividestheliverinto

4、upperandlowersegments.Middlehepaticveindividestheliverintorightandleftlobes(orrightandlefthemiliver).ThisplanerunsfromtheinferiorvenacavatothegallbladderfossaLefthepaticveindividestheleftlobeintoamedialandlateralpart.Theimageonthefarleftisattheleveloftherightportalvein.Atthisleveltheri

5、ghtportalveindividestherightlobeoftheliverintosuperiorsegments(7and8)andtheinferiorsegments(5and6).Theleveloftherightportalveinisinferiortotheleveloftheleftportalvein.Atthelevelofthesplenicvein,whichisbelowtheleveloftherightportalvein,onlytheinferiorsegmentsareseen(rightimage).Counter

6、clockwise1CaudatelobeSegment1Segment4aSegment8Segment72Leftlateraluppersagment8Rightanterioruppersagment4Leftmedialsagment7RightposterioruppersagmentSegment2LeftlateraluppersagmentLeftlaterallowsegmentLeftmedialsegmentRightposterioruppersegmentRightanteriorupperdegmentRightanteriorlowd

7、egmentRightposteriorlowsegmentLiveranatomyImagingtechniquesUS:firstchoice,screening,difficulttocharacterizethelesionsCT:importanttechniqueMRI:problemresolvingtechniqueGoodmethodsofdecidingpositionandpredictingthenatureofthemassCTtechniques7090120CTenhancedtechniquesTheliverhasadualbl