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1、提要目的：通过对腹部含脂病变五种序列图像的分析，评价IDEAL序列诊断腹部含脂病变优势及临床应用价值。比较IDEAL（IterativeDecompositionwater-fatseparationwithEchoAsymmetryandLeast-squaresestimation，IDEAL）序列与频率选择反转脉冲（spectralinversionatlipid，SPECIAL）序列、短反转时间反转恢复（shortTIinversionrecovery,STIR）序列、化学位移选择饱和（chemicalshiftselectivesaturation，CHESS）
2、序列、双回波（Doubleecho，Dual）序列图像的信噪比(signaltonoiseratio，SNR)、对比噪声比(contrasttonoiseratio，CNR)、脂肪组织信号均匀度及诊断的准确率。方法：60例腹部含脂病变的患者，均行1.5T磁共振IDEAL序列、SPECIAL序列、STIR序列、CHESS序列及Dual序列扫描，对所得图像进行比较。最后对数据进行统计学处理。结果：①IDEAL组与SPECIAL组、STIR组、CHESS组、SPECIAL组、Dual组信噪比有显著统计学差异。②IDEAL组与SPECIAL组、STIR组、CHESS组、SPECI
3、AL组、Dual组对比噪声比有显著统计学差异。③IDEAL组与SPECIAL组、STIR组、CHESS组、SPECIAL组、Dual组脂肪组织信号均匀度有显著统计学差异。④IDEAL组与SPECIAL组、STIR组、CHESS组、SPECIAL组、Dual组诊断准确率有显著统计学差异。结论：①IDEAL组与SPECIAL组、CHESS组、STIR组、Dual组相比信噪比和对比噪声比较高，脂肪信号均匀度较好。IDEAL序列图像质量最好。②IDEAL组较SPECIAL组、CHESS组、STIR组、Dual组诊断准确率高。③IDEAL序列为目前诊断腹部含脂病变的最优序列。关键词
4、IDEAL；SPECIAL；Dual；磁共振IDEALintheclinicalapplicationofabdominalintheDiagnosisofLipid-containingLesionsinAbdomenSpeciality:MedicalImagingandNuclearMedicineTutor:Prof.GanJieAuthor:WangLinlinAbstractObjective:Throughtheanalysisofabdominalfat-containinglesionsofthefiveimagesequences,Evaluation
5、IDEALsequencethatabdominalfat-containinglesionsdiagnosisandclinicalapplicationvalueadvantage.compareIDEALsequenceandSPECIALsequence,STIRsequence,CHESSsequence,DualsequencesInSNR,CNR,.adiposetissuesignaluniformityanddiagnosisaccuracyaspects.Methods:60casesofabdominalfat-containinglesionsar
6、ealltodo1.5TmagneticresonanceIDEALsequence,SPECIALsequence,STIRsequence,CHESSsequencesandDualsequence,comparetheobtainedimage.Finally,thedatawerestatisticallyanalyzed.Results:①IDEALgroupandSPECIALgroup,STIRgroup,CHESSgroup,SPECIALgroup,Dualgroup,therewassignificantdifferenceinSNR.②IDEALgr
7、oupandSPECIALgroup,STIRgroup,CHESSgroup,SPECIALgroup,Dualgroup,therewassignificantdifferenceinCNR.③IDEALgroupandSPECIALgroup,STIRgroup,CHESSgroup,SPECIALgroup,Dualgroup,therewassignificantdifferenceinadiposetissuesignaluniformity.④IDEALgroupandSPECIALgroup,STIRgroup
