CT、MRI成像用于直肠癌术前分期诊断中的价值对比研究

Comparison of CT and MRI Scans in Preoperative Staging of Rectalcancer

目的 探究CT、MRI成像用于直肠癌术前分期诊断中的价值对比。方法 将我院收治的50例直肠癌患者（已经病理学诊断证明）首先进行CT成像检查然后再进行MRI成像检查,检查分期包括原发肿瘤分期（T分期）和淋巴结转移分期（N分期）。结果 将两种方法成像结果和病理学检查结果进行对比发现：CT检查的T分期的诊断符合率是66%,N分期的诊断符合率是58%;MRI检查的T分期的诊断符合率是78%,N分期的诊断符合率是68%。两种结果具有统计学差异。分析比较两种诊断方法的敏感性和特异度,CT成像和MRI成像对于T1~2、T3、T4没有明显的差异,但是两种诊断方法对于N分期的敏感性和特异度有明显的统计学差异。结论 对于直肠癌术前分期诊断,CT成像和MRI成像均可以进行诊断,MRI较之于CT成像诊断价值更高。

Objective To evaluate the diagnostic value of CT and MRI scans in preoperative staging of rectal cancer. Methods 50 patients with rectal cancer diagnosed by pathological biopsy in the hospital underwent CT and MRI scans. Primary tumor staging（ T staging）and lymph node metastasis staging（ N staging）in each patient was made and recorded according to the im- aging findings. Results The preoperative staging results of CT and MRI were compared with pathological biopsy results respec- tively. The diagnostic accordance rate of T staging was 66% in CT versus 78% in MRI. And the diagnostic accordance rate of N staging was 58% in CT and 68% in MRI. The differences had statistic significance. Further more,we compared of the sensitivity and specificity of the two imaging methods in preoperative staging. These two imaging methods had no significant difference in T staging,while the sensitivity and specificity of the two methods in N staging were predominantly different. Conclusion CT and MRI scans could be used in the preoperative staging of rectal cancer. When compared with CT, MRI scans were more valuable in the preoperative staging of rectal cancer.