3.0t磁共振在直肠癌术前评估中扫描序列的优选_0.docx

3.0t磁共振在直肠癌术前评估中扫描序列的优选3.OT磁共振在直肠癌术前评估中扫描序列的优选新疆医科高校硕士学位论文3.OT磁共振在直肠癌术前评估中扫描序列的优选探讨生：何鑫导师：刘艳副教授/主任医师摘要目的：探讨3.OT磁共振在直肠癌术前评估中扫描序列的最优选择。方法：依据指定的扫描序列对已确诊的61例直肠癌患者进行术前T、N分期并测量肿瘤的纵向浸润范围，将MRI诊断结果与术后病理结果作比照。结果：T2WI-TRA(theT2weightedimage-Transverse,T2TVI-TRA)联合DTVl序列、T2WI-TRA序列、TIWI-TRA+DCE(Tlweightedimgae-TransverseDynamiccontrast-enhancedimage,T1WI-TRA+DCE)序列在T分期总精确率分别为90.16%>78.69%、83.61%o薄层T2WI-C0R联合DWI序列、薄层T2WI-COR序列、TlWI-CE序列的N分期总精确率分别为81.97%、73.78%、72.13%oT2WI-SAG联合DWI序列测量肿瘤的纵向浸润范围与病理结果采纳配对样本t检验分析，两者差异无统计学意义(Pgt;0.05)o结论:3.OT磁共振在直肠癌术前评估中的最优扫描序列是：T2WI-TRA序列、薄层T2WI-C0R序列、T2WI-SAG序列及DWl(b=0和1000smm2)序列。关键词：直肠癌；术前分期；磁共振；扫描序列1新疆医科高校硕士学位论文Thepriorityselectionofscanningsequenceofpreoperativeassessmentofrectalcancerof3.OTMRPostgraduaterHeXinSupervisoriAss.Prof.1.iuyanAbstractObjectivezTodiscussthepriorityselectionofscanningsequenceofpreoperativeassessmentofrectalcancerof3.OTMR.Methods:61patientswithrectalcancerunderwentpreoperativeT,Nstagingandmeasureverticalinfiltrationrangeoftumoraccordingtospecifiedscanningsequence,contrasttheMRIfindingsandpostoperativepathologicalfindings.ResultsiThetotalaccuracyofTstagingofT2WI-TRAcombinedDiffusionweightedimageDWIsequence,T2WI-TRAsequence,TlWeighted-Dynamiccontrast-enhancedimageTlWI-DCEsequencewasrespectively90.16%,78.69%and83.61%.ThetotalaccuracyofofNstagingofT2weightedimage-CoronalT2WI-C0RthinlayercombinedDWIsequence,T2WI-C0Rthinlayersequence,Tlweighted-contrast-enhancedimageTlWI-CEsequencewasrespectively81.97%,73.78%and72.13%.UsingpairedsamplesTtesttoanalysetheresultshavenostatisticaldiff.