多层螺旋ct及其图像后处理技术在喉癌和下咽癌诊断中的应用研究

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1、THEVALUEOFMI履互I—SLICEHELICALCTANDIM_AGEPOST-PROCESSING烈傩D薹AGNOSISOFLARYNGEALANDHYPOPHARYNGEALCARCINOMAPostgraduateShangDongpingSpecialtyImagingmedicineandnuclearmeOlClneTutorProf．LiuLinxiangABS羽RACTObjectiveToexplorethevalueofmulti—slicehelicalCTandimagepost-processingtechniqueinevaluatingthelarynge

2、alandhypopharyngealcarcinoma．Materialsandmethods32casesoflaryngealcarcinomasand13Cases。ofhypopharyngealcarcinomaswerecollected,allofthecaseswereconfirmedbybiopsyandhistopathology．Multi-sliceCTenhancingscanwasperformedinthe32patientswithlaryngealcarcinomasand13patientswithhypopharyngealcarcinomas，pla

3、inscanwasperformedbeforeenhancingscanin27patients．Thinaxialimagesof0．75mmwerereconstructedwiththerawdata,thenallofthethinaxialimagesweretransportedtoVolumeWizardworkstation．MP凡CTVEandtransparent3DVRTimageswerereconstructed．Contrastingtheaxialimages，MPR,CTVE，VRTimageswithoperationandfiber-opticlaryng

4、oscopyorelectroniclaryngoscopy．Comparingtheabilitytodemonstratethelesions．AnalyzingtheCTmanifestationsoflaryngealandhypopharyngealcarcinomas．ResultsAmong32patiemswithlaryngealcarcinomas，therewel'e9supraglottiecarcmomas，17glotticcaremom斟，6transglotticcarcinomas．18lesionsdisplayedasthickeningandswelli

5、ngmucosapartlyorwholly,14displayedastumorornoeud。Among13patientswithhypopharyngealcarcinomas，12pyriformsinuscarcinomasand1postericoidcarcinomas，theformerdisplayedasthickeningwallsofpyriformsinusandthelaterdisplayedastumorwi也softtissuedensity．Multi．slicehelicalCTcouldshowthelocation、size、shape、extens

6、ionofthetumorsandthebreakagesofcartilagesandlymphonodemetastasis．LymphadenectasiswerefoundbyhelicalCTin20cases，butonly17caseswereconfirmedtobemetastaticlymphnodesbyoperationandpathology,theaccuraterateofhelicalCTindiagnosingmetastaticlymphnodesWas93．3％．Comparingaxialimages晰mMPRimages，theformerwasbet

7、terthanthelaterindisplayingthelesionsoftheanteriorcommissureandthelaryngealcartilage；thelaterwas3betterindisplayingthelesionsoftheventricularfol也vocalcordandaryepiglotticfold；thereV黼110significantstat