高分辨MRI对直肠癌T分期和环周切缘的评估

被引:32
作者
蔡香然 [1 ]
刘斯润 [1 ]
孟悛非 [2 ]
张中伟 [2 ]
机构
[1] 广州暨南大学附属第一医院影像中心
[2] 广州中山大学附属第一医院放射科
关键词
磁共振成像; 直肠癌; T分期; 环周切缘;
D O I
暂无
中图分类号
R735.37 [];
学科分类号
摘要
目的探讨体外相位阵列线圈高分辨MRI对直肠癌术前T分期和环周切缘判定的价值。资料与方法原发性直肠癌患者30例和术后离体直肠癌标本10例,全部行体外相位阵列线圈高分辨MRI检查,将影像学所见与手术病理对照观察。结果高分辨MRI对直肠癌T分期判定的整体准确度为86.7%(26/30),对T1~2期诊断的敏感度和特异度分别为66.7%(6/9)和95.2%(20/21),对T3期诊断的敏感度和特异度分别为100.0%(15/15)和73.3%(11/15),对T4期诊断的敏感度和特异度分别为83.3%(5/6)和87.5%(21/24)。高分辨MRI对环周切缘判定的敏感度为92.3%(12/13),特异度为82.2%(15/17),准确度为90.0%(3/30)。结论体外相位阵列线圈高分辨MRI技术可较准确地显示直肠癌的T分期,识别癌结节在直肠系膜内的沉积并预测环周切缘的受累与否,有助于术前选择放、化疗和计划手术方案以确保对病灶的完整切除,降低复发率。
引用
收藏
页码:801 / 805
页数:5
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