博文
(2005-04-20 16:47:48)
超声医学网
介绍超声医学,超声专题图片等。
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超声影像工作室
提供动态,技术文栏,图库,资源下载,基础知识。
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超声影像工作室
超声影像基础知识、学科动态、科研论文、超声图片库,超声论坛。
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德阳影像医学论坛
影像医学工作者技术交流。
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河南省放射学会
河南省[阅读全文]
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(2005-04-20 16:43:48)

ThePelvis:AnatomyandPhysiologyofthePelvis
CTisexcellentforimagingthesofttissuesandboneinthepelvis(Figure23&24).Patientpreparationisimportantandoralcontrastisusuallygiven1to2hoursbeforescanningtohelpenhanceanddefineorganboundaries.Intravenouscontrastisalsoroutinelygivenandinsomecasesrectalcontrastisadministered.

ImagingofthePelvis(Figure23)
Theimageontheleftshowsad...[阅读全文]
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(2005-04-20 16:42:15)

TheAbdomen:TheAdrenalGlands
Theadrenalglands(Figure22)arepairedorganslyingonthesuperiorpoleofthekidneys.Theyareoftenreferredtoassuprarenalglands.OnCTtheylooklikelittletrianglesonanaxialimage.Theadrenalglandsarecomposedofanoutercortexandinnermedullathatfunctionasseparateglands.Themedullasecretesepinephrineandnorepinephrinewhicharestimulants.Thesestimulantsactonmanyareasofthebodyincludingpupildi...[阅读全文]
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(2005-04-20 16:39:34)


Thekidneys(Figure21)filterwasteproductsfromtheblood.Theyalsofilternutrientswhicharereabsorbedintothebloodstream.Theimportantpartsarethehilum,(containingtherenalartery,vein,andpelvis)theoutercortexandtheinnermedulla.UnenhancedCThasprovenusefulinthedetectionofobstructingureteralstones.Theuretersdescendretroperitoneallyfromthekidneysattherenalpelvisandentertheurinarybladderposteriorly.Unenhanced...[阅读全文]
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(2005-04-20 16:37:32)

TheAbdomen:ThePancreas
Thepancreasliesretroperitoneallyanddiffersinsize,location,andshapefrompersontoperson.Theheadliesinthecurveoftheduodenum,thebodybehindthestomach,andthetailtouchesthespleen(Figure19).Itsfunctionissecretionofthemajorenzymesfordigestionincludingtrypsin,amylaseandlipase.Trypsinactsonproteosesandpeptoneswhichareprocessedproductsofprotein.Amylasehelpsprocessstarchesandlipaseact...[阅读全文]
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(2005-04-20 16:35:39)

TheAbdomen:TheSpleen
Thespleenislargelymadeupoflymphoidtissueandislocatedintheupperleftquadrantoftheabdomen.Thespleenfiltersbloodandmanufactureslymphocytesandmonocytesusedinfightinginfection(Figure18).Lymphocytespossesslimitedphagocytic(ingestionanddigestionofbacteriabyphagocytes)properties.Phagocyteliterallymeanstoeatcells.Thiscellhasthecapabilitytoingestanddestroybacteria,cells,colloidsandmo...[阅读全文]
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(2005-04-20 16:34:18)

TheAbdomen:TheLiver
Theliveristhelargestglandinthebodyanditislocatedintherightupperquadrantoftheabdomen.Ithasalargerightlobe,asmallerleftlobe,andasmallquadratelobe.Thefunctionoftheliveristheformationofbile,maintaininganormalglucoseconcentration,fatandproteinmetabolism,andtheremovalofdrugs,hormones,andtoxins.Thegallbladder'smainfunctionisstorageandconcentrationofbile.Bileleavingthegallbladderis...[阅读全文]
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(2005-04-20 16:32:49)

TheAbdomen:ScanTechnique
CTissuperiorfordetectingabnormalnodesintheupperretroperitoneumandinferiormediastinum.Itprovidesvisualizationofenlargednodesinthemesentaryandhilarareas.Evaluationofextranodaltissueintheliver,kidney,bone,andlungsduringasingleexaminationispossibleusingcurrentCTtechnology.(Figures13-16)

ImagingoftheAbdomen(Figure13)
ContrastenhancedCToftheabdomen....[阅读全文]
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(2005-04-20 16:31:38)

PostProcessingMethods:AdvancedTechniques
WhentheoverlappingaxialimagesfromahelicalCTacquisitionareloadedontoaworkstation,sophisticateddisplayscanbeproduced.Themostcommonlyutilizeddisplaysaremultiplanarreformatting,maximumintensityprojections,surfaceandvolumerenderingandvirtualendoscopicviewing.Theseimagedisplayscanbeusedinabroadrangeofapplicationstoaidintheinterpretationofthestudyandtobetterun...[阅读全文]
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(2005-04-20 16:27:33)

CTAngiography:Abdomen
Aorticaneurysm(Figure9),dissection(Figure10)andtraumaticrupturearelife-threateningconditionsaffectingthethoracicaorta.Accuratedepictionoftheseprocessesandtheirrelationshiptothegreatvesselsandcoronaryostiaarenecessaryforguidingtreatment.CTAcanbeusedequallyeffectivelyintheevaluationofdissectionandassessmentofvasculargraftsandstents.(Figure11)

CTA-Aorti...[阅读全文]
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