1.5T和3.0T磁共振检查在直肠癌术前分期价值的比较  

Value of 1.5T MRI and 3.0T MRI Imaging in Preoperative Staging of Rectal Cancer

作　　者：宋立涛[1] 张欢[1] 潘自来[1] 庞丽芳[1] 柴维敏[1] 丁蓓[1] 宋琦[1] 杜联军[1] 赵任[2] 陈克敏[1] 

机构地区：[1]上海交通大学医学院附属瑞金医院放射科,瑞金二路197号上海市200025 [2]上海交通大学医学院附属瑞金医院外科,瑞金二路197号上海市200025

出　　处：《中国医学计算机成像杂志》2011年第2期145-149,共5页Chinese Computed Medical Imaging

摘　　要：目的:探讨1.5T和3.0T磁共振检查在直肠癌诊断和术前分期中的作用,分析两者在直肠癌术前分期的应用价值。方法:选择经肠镜活检证实为直肠癌病人60例,随机盲法均分为两组,分别行1.5T和3.0T磁共振检查及术前直肠癌影像分期,并与病理分期对照。结果:1.5T MRI T分期总准确性为80%,N分期总准确率为67%,N0分期的准确率为94%;N1分期的准确率为40%;N2分期的准确率为56%;3.0T MRI T分期总准确性为80%,N分期总准确率为77%,N0分期的准确率为83%;N1分期的准确率为60%;N2分期的准确率为100%。结论:1.5T MRI与3.0T MRI对于直肠癌术前T分期准确率均较高且相近;3.0T MRI N1与N2分期准确率高于1.5T MRI;两者各具优势,在临床中均具有较高应用价值。Purpose：To investigate the accuracy of 1.5T MRI and 3.0T MRI in staging of rectal cancer,and to analysis the clinical value of both techniques.Methods：Sixty patients with primary rectal cancer,proved by biopsy,were randomly assigned into two groups.They were underwent either 1.5T MRI or 3.0T MRI.MR findings were correlated with histology.Results： The overall accuracy of 1.5T MRI in the diagnosis of T staging was 80%.The overall accuracy of 1.5T MRI in the diagnosis and N staging was 67%,and 94%,40%,56% for N0,N1,and N2 respectively. The overall accuracy of 3.0T MRI in the diagnostic of T staging was 80%.The overall accuracy of 3.0T MRI in the diagnosis and N staging was77%,and 83%,60%,100% for N0,N1,and N2 respectively.Conclusion：The accuracy of 1.5TMRI and 3.0TMRI in the diagnosis of T staging is similar.The accuracy of 3.0T MRI in the diagnosis and N1 and N2 staging are higher than 1.5T MRI.Both techniques have advantage and have high value in clinical usage.

关 键 词：磁共振成像 直肠癌 TNM分期 

分 类 号：R735.3[医药卫生—肿瘤]