断层解剖学课件腹部

5AbdomenSectionalAtlas:4Thesectionlevelssuperimposedonanx-ray.Clicktheappropriatenumberabovetoviewaparticularsection.1

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AbdomenSectionalAtlas:section1Byconvention,CTcrosssectionsareviewedfromacaudalperspective.Section1,atthelevelofT9,cutsacrossthedomeoftherighthemidiaphragm,thebasesofthelungs,andthelongaxisoftheventriclesoftheheart.Theterminationiftheinferiorvenacavaisseenatitsjunctionwiththerightatrium(seeHeartAnatomy,Cross-Sections).2、肝内管道肝门静脉组成肝分叶根据肝内Glisson系统各段分支的分布区，将肝分为左、右两个半肝，再进一步分为5叶、6段。

Glisson系统由肝门静脉、肝固有动脉及肝管的各级分支及其周围的结缔组织鞘共同构成。肝内分支左支尾状叶支左外上支左外下支左内叶支右支前支后支肝静脉肝左静脉肝中静脉肝右静脉右后肝静脉肝门静脉与肝静脉的位置关系eAbdomenSectionalAtlas:section4AtthebottomofT11,theportalveinisseeninthehepatichilum.Theesophago-gastricjunctionisseen.ThebodyofthespleenispartiallyseparatedfromthebodyofthestomachbytheprominentsplenicflexureAbdomenSectionalAtlas:section6AttheupperborderofL1,theceliactrunkemergesperpendiculartotheaorta,justbeneaththearcuateligamentofthecrura(seeimageabdG3004).Thepancreasisdrapedacrosstheoriginoftheceliacandthetailofthepancreasabutsthehilumofthespleen(seeimagepanG3001).Theupperpoleoftheleftkidneyandadjacentadrenalglandareseen.Thetopoftherightadrenalglandisseenimmediatelyposteriortotheinferiorvenacavawheretheadrenalveindrainsdirectlyintoitsposteriorwall.AbdomenSectionalAtlas:section12AtL4,theaorticbifurcationisseen.Thenarrowdescendingcolonontheleftandwidececumontherightareseen.Theappendixisvisualizedwithcontrastinthelumen(seeAppendectomy).Theappendixisretrocecalhereasitisinthemajorityofindividuals.AbdomenSectionalAtlas:section13AtthetopofL5,thecommoniliacarteriesdiverge.Th