mr t1wi梯度回波同、反相位序列对肝脏病变的鉴别诊断价值论文

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1、MRT1WI梯度回波同、反相位序列对肝脏病变的鉴别诊断价值论文温新东，李又成，黎金林，李建策【摘要】目的：评估同相位与反相位梯度回波T1RT1RIusingadouble-echoSPGR(spoiledphasegradientecho，SPGR)sequence.SIR(signalintensityratio，SIR)of76focalhepaticlesionsonIPandOPimagesagesas，1.06±0.04in7benignhepaticneoplasms，1.22±0.12in11h

2、epaticinflammatorylesions，1.02±0.12in11hepatichemangiomas，1.02±0.06in10livermetastases，and0.99±0.07in10hepaticcysts，respectively.Nodifferenceasandhepaticinflammatorylesions(P0.05).Thereongbenignhepaticneoplasms，livermetastases，hepatichemangiomas，andhepaticc

3、yst(P0.05).ButtheSIRofcarcinomasandhepaticinflammatorylesionsoneofbenignhepaticneoplasms，livermetastases，hepatichemangiomasandhepaticcystsrespectively(P0.01).Conclusion:Thesignalintensitiesaresignificantlydifferentbetagesinfat-orlipid-containingliverlesions

4、.MRSPGRin-phaseandopposed-phaseT1-agicresonanceimaging;liver;gradientecho肝脏病变的鉴别诊断是日常影像检查工作中常常遇到的问题，常规MR平扫及增强扫描在鉴别诊断上常有一定限度。肝脏病变种类较多，有些病变在病理上有较为特征性的改变，如肝癌结节等在镜下常有多少不一的脂肪变性，而囊肿、血管瘤等鲜有此种改变。MRT1RT1R扫描技术使用1.5TGESigna磁共振仪，相控阵线圈。常规均行自旋回波(SE)T1加权(TR300ms，TE16ms，带宽

5、41.67)及脂肪抑制T2oreThanFattyInfiltrationorFattySparingJ.RadioGraphics,2006,26(5):1409-1418.6,HussainHK,AdusumilliS,etal.MRImagingofHepatocellularCarcinomaintheCirrhoticLiver:ChallengesandControversiesJ.Radiology,2008,247(2):311-330.7PrasadSR,RIUsingtheDouble-E

6、choChemicalShiftPhase-SelectiveGradient-EchoTechniqueJ.AmJRoentgenol,2007,188(1):W49-W56.