能谱ct在胃周动脉成像中的应用分析

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1、AbstractStudyofSpectralCTonGastricArterialCTAngiographyPostgraduateNinaJiTutorJianboGaoDepartmentofRadiology,theFirstAffiliatedHospitalofZhengzhouUniversityZhengzhou，Henan450052Backgroundand0bjectiveGastriccarcinomaisthemostcommonmalignanttumorofthediges

2、tivetractinChina,andisthethirdleadingcauseofthecancer-relateddeaths，onlyinferiortolungcallcel"andhepatocellularcarcinoma，andboththeincidenceandmortalityofitisthefirstinmalignanttumorsinruralareas．Andthestomachisthemostcommonsiteofgastrointestinalstromalt

3、umors(GiSTs)andgastrointestinallymphoma．Thevalueofcontrast-enhancedMSCTSCanindiagnosisanddifferentialdiagnosisofgastrictumorshasbeenprovedbymanyresearches，butthestudiesofgastricarterialCTangiography(CTA)arerelativelyfewer．Toknowthefeedingarteries，vascula

4、rinvasionandarteryvariationisessentialforperformingthebesttherapeuticregimen,avoidingvascularinjury,reducingbleedingandshorteningoperationtime．Inthepreviousstudies，thedisplayrateoflargerdiameterarteriessuchasleftgastricartery(LGA)andfightgastroepiploicar

5、tery(RGEA)Wasnearly100％，butthedisplayrateofsmallerdiameterarterieslikefightgastricartery(RGA)，leftgastroepiploicartery(LGEA)，shortgastricartery(SGA)andposteriorgastricartery(PGA)Waslower．SpecialimagingofGEDiscoveryCT750HDgeneratesasetofsingleenergyimages

6、．RecentstudyrevealsthatimagequalityofCTAoftheoptimalkeVisbaterthanthatoftheconventionalpolychromaticimages．Theaimofthestudyincludesthreeaspects：First，toasessthevalueofspecialVAbstractCTangiographyongastricarterialanatomyandarteryvariation．Second，tOexplor

7、etheeffectoftheoptimalcontrast-to-noiseratio(optimalCNR)techniqueonimagequalityofgastricarterialCTAinspectralimaging．Third,toevaluatethefeedingarteriesofgastrictumors．MaterialsandmethodslCfinicaldatas64patientswithclinicallysuspectedgastricdiseasesfromMa

8、y201toDecember201werccollected，including46malesand18femals，excludingCaseswithhistoriesofabdomensurgery．TherangeofageWasbetween27and79，averageat61．2．Pathologicalresults：45caseswercgastriccancer．9Casesweregastricgastrointest