摘要
目的探讨薄层MRI直肠癌T分期征象对直肠癌术前分期价值。方法 58例患者行薄层MRI,由两位高年资诊断医师进行T分期及征象评估,最终结果与病理结果对照研究。结果薄层MRI T分期与病理结果一致性好,Kappa值0.82。直肠癌MRI T分期各级征象与病理分期呈正向线性相关,相关性强(rs=0.874,P<0.01)。壁外索条影、肌层信号中断、肿瘤结节样外凸、系膜脂肪间隙模糊等征象对T3期的准确性分别为67.2%、93.1%、84.5%、72.4%;敏感性分别为64.5%、93.5%、70.9%、77.4%;特异性分别为70.4%、92.6%、100%、66.7%。结论薄层MRI直肠癌T分期征象用于直肠癌术前T分期有一定的价值。
Objective To study the value of Thin section MRI in T3 staging of rectal cancer. Methods Fifty eight patients with rectal cancer underwent thin section MR scan. The MR features of rectal cancer were analyzed by two radiolo- gists. The T staging features were compared with pathological results. Results The consistency between MR T staging features and pathological results were perfect （Kappa = 0.82）. The MR T staging features were found to have strong posi- tive linear correlation to pathological T staging （rs = 0. 874, P 〈 0.01 ）. The MR features, such as fiberal strip surrounding rectal wall, hypointensity of muscular layer discontinued, nodular evagination and blurry mesenterium, had T3 staging ac- curacy of 67.2% ,93.1% ,84.5% and 72.4% ,T3 staging sensitivity of 64.5% ,93.5% ,70.9% ,77.4%, and 33 staging specificity of 70.4% ,92.6%, 100% ,66.7% respectively. Conclusion The Thin section MRI features can be helpful for T3 staging of rectal cancer preoperatively.
出处
《临床放射学杂志》
CSCD
北大核心
2012年第12期1747-1751,共5页
Journal of Clinical Radiology
关键词
直肠癌
磁共振成像
分期
病理学
Rectal cancer Magnetic resonance imaging Stage Pathobiology
