简介：摘要目的探讨２０例正常成人足部肌腱韧带的双源双能量CT(DECT)与MRI影像表现的比较.方法对２０例正常人足部同时进行Simen双源双能量CT和GE－１??５T－HDXT－MRI扫描仪扫描,双源CT球管电压分别为８０KV、１４０KV,管电流２６０、６０mAs,将１４０KV和８０KV两组数据装入DE软件、３D软件进行后处理重建.GE－１??５T－HDXT－MRI使用HDT/RFOOT表面线圈－Configuration－QUADANKLE,扫描层厚３mm,扫描层距１mm,行轴位及冠状位扫描,T１WI,T２WI成像.结果双源双能量CT经过后处理图像能够较好显示足部肌腱韧带全貌外形、边缘,MRI未能显示肌腱韧带的全貌外形、边缘,但显示肌腱韧带内部病变的信号变化明显较为敏感.结论双源双能量CT与MRI能够很好互补显示足部肌腱韧带影像信息.关键词足部;肌腱韧带;体层摄影术;X线计算机;磁共振成像DualenergyCTandMRIimaginganalysisoftendonorligamentinnormalfootLAIQing－quanHUANGFangLIWei－chengWANGYiHUANGWen－hanHUANGQi－mingCT/MR２ndAffilliatedHospital,FujianMedicalUniversity,Quanzhou,FujianProvince３６２０００,China.AbstractObjectiveTostudy２０casesoftheDualenergyCTandMRIimagingoftendonorligamentinnormalfoot.Method２０caseswereexaminedbyDualenergyCTandMRI,DECTthetubevoltageof１４０and８０KV,tubecurrentsof６０and２６０mAs,Thereconstructedimageswerepost－processedbyDEand３Dsoftware.MRIslicethickness３mm,layerfrom１mm,lineaxialandcoronalscans,T１WI,T２WIimaging??ResultsDECTcanbecleardisplaythetendonorligaＧmentinnormalfootafterpost－processedandMRIcannotdisplaybutitmoresensitiveinthesinge.ConclusionsThetendonorligamentinnormalfootwerecleardisplayedwithDECTthanMRI,whichwasadvantagesofrapidity、noninvasivenessandmulti－viwe.KeywordsFoot;Tendon、ligament;tomography;X－raycomputed;MRI中图分类号R６８６文献标识码B文章编号１００８－６３１５(２０１５)１２－０２４１－０２