【摘要】 目的 探讨高分辨磁共振成像(HRMRI)诊断直肠癌壁外血管侵犯(EMVI)的价值。方法 回顾本院经手术治疗的33例直肠癌患者术前磁共振图像,将EMVI磁共振评分与术后病理结果进行比较分析。结果 EMVI磁共振评分阴性、阳性与病理对照之间具有一致性(k=0.324,P=0.039),EMVI磁共振评分与病理结果对照的准确率为66.7%(22/33)。EMVI磁共振评分随着病理T分期(pT分期)升高,二者之间的关联性较好(r=0.546)。EMVI磁共振评分阳性比率随着病理T分期(pT分期)升高,二者之间的关联性较好(r=0.469)。受试者工作特征曲线(ROC)分析证明EMVI磁共振评分是诊断直肠癌EMVI有效的方法(AUC=0.757)。结论 HRMRI是诊断直肠癌EMVI的一种有价值的方法。更多还原

【Abstract】 Objective To investigate the value of high-resolution magnetic resonance imaging(HRMRI) in diagnosis of extramural vascular invasion(EMVI) of rectal cancer.Methods 33 patients with rectal cancer were reviewed preoperatively.The MRI findings of EMVI of all cases were scored and compared with the postoperative pathological results.Results The MRI EMVI scores were consistent with histopathology findings(k=0.324,P=0.039).The accuracy rate of MRI in diagnosis of EMVI was 66.7%(22/33).The MRI EMVI scores rose up with increased pT stage,meanwhile there was a high correlation between both(r=0.546).The percentage of MRI EMVI positive number was increased with elevated pT stage,and there was also a high correlation between both(r=0.469).ROC curve showed that MRI EMVI scoring was an effective method in diagnosis of rectal cancer EMVI(AUC=0.757).Conclusion HRMRI is a valuable method in diagnosis of EMVI of rectal cancer.更多还原