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ID:24126611
大小:3.48 MB
页数:63页
时间:2018-11-12
《颈部淋巴结病变的ct灌注研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、硕士学饭论文StudyofCTperfusionofCervicalLymphNodesName:TaULiliSupervisor:QiuShijunABSTRACTPartone:StudyoftheMethodforCTperfusionofCervicalTissueslISSUes[Objective]ToexplorethemethodforCTperfusionofcervicaltissues.[MeterialsandMethods]1、Subjects30patientswithnormalcervicalmusclesinNanfangHospital
2、underwentCTperfusionscanduringMay2007toMarch2008,inwhichl7weremaleand13werefemaIe。2、Equipmentandcontrastmedium(1)GElightspeedmulti--detectorrowscanner.(2)KMP810Phighpressuresyringe(Medradcorp.).(3)Nonioniciodinatedcontrastagent,300mgI/m1.3、ExaminationtechniqueAxialscanrangedfrombaseofskull
3、tothelevelofsupraclavicularfossa,inwhichthescanparametersincluded5mmslicethickness,pitch1.375,120Kvand120~180mA.ABSTRACTTherangeofinterestformeasuringperfusionwascenteredonthelargestareaofnormalcervicalmuscles(wechoserightsternomastoidmuscleastheROIthistime)identifiedonthenon-contrastlocal
4、izingimages.Fouradjacent,5-mmsliceswereselectedatthelevelofthetumor.Fortymillilitersofnonioniccontrast(300mgI/m1)wereinjectedat4ml/s.At5secondsintotheinjection,acine(continuous)acquisitionwasinitiatedusingthefollowingparameters:120Kv,60mA,4×5mm,1-secondrotationand1-secondintervalforadurati
5、onof85seconds.4、DataprocessingandimagingevaluationTheperfusiondatawaspostprocessedusingcommerciallyavailablePerfusion3softwarepackageonGEADW4.2workstation.Aregionofinterestwasplacedinthefightinternalcarotidarteryandleftintemalcarotidarteryintum,exportinthefightsternomastoidmusclestogenerat
6、etime—densitycurvebycontrastenhancement.Someperfusionparametersweregeneratedautomatically,includingbloodflow(BF),bloodvolume(BV),meantransittime(MTT)andpermeabilitysurfaceareaproduct(PS)。Onthebasisofdifferemtinputarteriestheresultsweredividedintotwogroups-thegroupofri曲tinteralcarotidartery
7、andthegroupofleftinteralcarotidartery.一5StatisticalMethodForeachoftheperfusionparameters(BF、BV、MTTandPS),wecomparedmeasurementsbetweenthegroupofrightinteralcarotidarteryandthegroupofleftinteralcarotidartery.Todetermineastatisticallysignificantdifferencebetween
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