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ID:15189688
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页数:10页
时间:2018-08-01
《mr t1wi梯度回波同、反相位序列对肝脏病变的鉴别诊断价值》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、MRT1WI梯度回波同、反相位序列对肝脏病变的鉴别诊断价值作者: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T1WI在肝脏结节诊断中的应用价值。方法:回顾性分析76例肝脏结节在MRT1WI梯度回波同相位与反相位图像上的信号差别。将76例肝脏结节分为6组:肝癌组27例,肝内良性肿瘤组7例,肝内炎性病变组11例,海绵状血管瘤组11例,转移瘤组10例,囊肿组10例。测量各组病变在T1WI同、反相位图像上的信号强度比值,用方差分析比较6组病变在T1WI同、反相位图像上的信号强度比值有无差异性。结果:6组肝脏结节在T1WI同反相位图像上的信号强度比
2、值分别为肝癌1.27±0.25,肝内良性肿瘤1.06±0.04,肝内炎性病变1.22±0.12,海绵状血管瘤1.02±0.12,转移瘤1.02±0.06,囊肿0.99±0.07。在T1WI同、反相位图像信号强度比值上,肝癌与肝内炎性病变两组之间差异无显著性(P>0.05),肝内良性肿瘤、转移瘤、海绵状血管瘤和囊肿四组之间差异亦无显著性(P>0.05),前两组与后四组病变之间差异有显著性(P<0.01)。结论:含有少量脂肪成分的肝脏病变在MRT1WI梯度回波同相位与反相位图像上有明显的信号强度差异,因此,MRT1WI梯度回波同相位与反相位序列在肝脏
3、病变的鉴别诊断上有重要价值。【关键词】磁共振成像;肝脏;梯度回波10 Abstract:Objective:ToassesstheadvantagesofMRSPGRin-phase(IP)andopposed-phase(OP)T1-weightedsequencesforthedifferentiationoffocalhepaticlesions.Methods:Twenty-sevenhepatocellularcarcinomas,7benignhepaticneoplasms,11hepaticinflammatorylesions,11hepati
4、chemangiomas,10livermetastases,and10hepaticcystswereretrospectivelyevaluatedat1.5TchemimalshiftMRIusingadouble-echoSPGR(spoiledphasegradientecho,SPGR)sequence.SIR(signalintensityratio,SIR)of76focalhepaticlesionsonIPandOPimageswascalculatedandcomparedusinganalysisofvariance.Results:SIR
5、of76focalhepaticlesionsonIPandOPimageswas1.27±0.25in27hepatocellularcarcinomas,1.06±0.04in7benignhepaticneoplasms,1.22±0.12in11hepaticinflammatorylesions,1.02±0.12in11hepatichemangiomas,1.02±0.06in10livermetastases,and0.99±0.07in10hepaticcysts,respectively.NodifferencewasshowedintheSI
6、Rbetweenhepatocellularcarcinomasandhepaticinflammatorylesions(P>0.05).TherewasnosignificantdifferenceintheSIRamongbenignhepaticneoplasms,livermetastases,hepatichemangiomas,andhepaticcyst(P>0.05).ButtheSIRofcarcinomasandhepaticinflammatorylesionswas10significantlydifferentfromone
7、ofbenignhepaticneoplasms,livermetastases,hepatichemangiomasandhepaticcystsrespectively(P<0.01).Conclusion:Thesignalintensitiesaresignificantlydifferentbetweenin-phaseandopposed-phaseimagesinfat-orlipid-containingliverlesions.MRSPGRin-phaseandopposed-phaseT1-weightedsequencesarehelp
8、fulin
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