·123CHINESEJOURNALOFCTANDMRI,FEB.2023,Vol.21,No.02TotalNo.160【第一作者】林禹，男，主治医师，主要研究方向：肿瘤多参数影像诊断。E-mail：420867402@qq.com【通讯作者】王金岸，男，主任医师，主要研究方向：胸腹部CT及MRI影像诊断。E-mail：xmzshwja@163.com论著CombinedApplicationofMonoenergeticImagesandIodineMapsDerivedfromDual-layerSpectralDetectorCTfortheDiagnosisofSolidRenalTumorsLINYu1,ZHANGXiao-xiao1,LVShao-mao1,WANGJin-an1,*,CAOdai-rong2,CHENXing-biao3.1.DepartmentofRadiology,ZhongshanHospitalAffiliatedtoXiamenUniversity,Xiamen361004,FujianProvince,China2.DepartmentofRadiology,theFirstAffiliatedHospitalofFujianMedicalUniversity,Fuzhou350004,FujianProvince,China3.DepartmentofClinicalScience,PhilipsHealthcare,Shanghai200233,ChinaABSTRACTObjectiveToevaluatethevalueofdualdetectorspectralCT(DL-SDCT)virtualmonoenergeticimages(VMIs)andiodinemapsinthediagnosisofsolidrenaltumors.MethodsTheenhancedCTimagesof77caseswithsolidrenaltumorswereretrospectivelyanalyzed.TheconventionalCTimages,VMIs,iodinemapsandVMI-iodinemapsfusedimageswereobtained.TheCTvalue,iodinedensity(ID)andimagenoisevalueoftumor,muscleandrenalcortexineachgroupweremeasured,andthecontrast-to-noiseratio(CNR),relativeenhancementvalue(REV)andnormalizediodinedensity(NID)werecalculated.Theimagequalitywasevaluatedby5-pointmethod.ResultsComparedwithconventionalimages,VMIimageshadlowernoiseandhigherCNR(allP<0.001).ThesubjectivescoreofVMI-iodinemapsfusedimageswasthehighest.BothDL-SDCTquantitativeparametersREVandNIDcouldbeusedinthediagnosisofclearcellcarcinoma.ConclusionComparedwithconventionalCTimages,theimagequalityofVMI,iodinemapsandtheirfusionimagesderivedfromDL-SDCTaresuperior,whichishelpfulforthedetaileddisplayandqualitativediagnosisofsolidrenaltumors.Keywords:RenalTumor;MonoenergeticImage;Tomography;X-rayComputed与常规混合能量图像相比，能谱CT虚拟单能量图(virtualmonoenergeticimage，VMI)和碘图可以更准确地反映不同组织的X线吸收特性及碘对比剂摄取率，更容易发现微小组织学差异，有助于肿瘤的检出与鉴别[1-5]。新一代双层光谱探测...
