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目的探讨应用腔内对比剂的直肠高分辨MRI对直肠癌术前诊断的价值。方法搜集2014年10月至2015年12月期间本院有临床相关症状且经病理证实的直肠癌52例患者的病例资料,所有患者术前均行直肠高分辨MRI及应用直肠腔内对比剂的高分辨MRI,并与术后病理结果作对照分析。结果 52例中,p T1 12例,p T2 27例,p T3 13例。高分辨MRI对直肠癌T分期的符合率为75%,Kappa值为0.56,P<0.05;采用直肠腔内对比剂的高分辨MRI能更清晰地显示直肠腔内的较小或多个病灶,对直肠癌T分期的符合率为85%,Kappa值为0.75,P<0.05。结论高分辨MRI结合直肠腔内对比剂的应用对直肠癌术前诊断及T分期有较高的诊断价值,能更清晰地显示直肠腔内的较小或多个的病灶。
Objective To investigate the value of intrarectal contrast medium in rectal high resolution MRI in preoperative diagnosis of rectal cancer. Methods A total of 52 patients with clinically relevant symptoms and pathologically confirmed rectal cancer in our hospital from October 2014 to December 2015 were enrolled in this study. All patients underwent rectal high resolution MRI and rectal cavity contrast agent High resolution MRI, and postoperative pathological results for control analysis. Results In 52 cases, there were 12 cases of p T1, 27 cases of p T2 and 13 cases of p T3. The coincidence rate of high-resolution MRI for T stage of rectal cancer was 75%, Kappa value was 0.56, P <0.05. High-resolution MRI with contrast agent in rectal cavity could show more or less lesion in rectal cavity, The coincidence rate of T staging for rectal cancer was 85%, Kappa value was 0.75, P <0.05. Conclusion The combination of high-resolution MRI and contrast agent in rectal cavity has high diagnostic value in preoperative diagnosis and T staging of rectal cancer, and can show more or less lesion in rectal cavity more clearly.