探讨CT平扫及增强扫描联合多模式重建技术用于结肠肿瘤病变的诊断价值。

回顾性分析广安市人民医院行肠镜检查怀疑为结肠病变的96例患者的临床资料，术后均经病理证实为结肠癌70例，结肠息肉26例，所有患者术前经CT平扫及增强扫描，并将扫描数据传入后处理工作站，获取多平面重建（MPR）、透明法（Raysum）及结肠仿真内镜（CTVC）图像，分析结肠癌CT表现，对结肠癌术前CT图像进行T、N分期，并与术后病理结果进行比较。

CT平扫及增强扫描联合多模式重建技术对结肠癌病变检出率、结肠息肉检出率均为100.00%。CT平扫及增强扫描联合多模式重建技术诊断累及浆膜层、累及邻近组织脏器、腹膜后淋巴结转移与病理结果比较差异均无统计学意义（P>0.05）。术前CT平扫及增强扫描联合多模式重建技术诊断T分期总准确度为84.29%，≤T₂期、T₃期、T₄期准确度分别为75.00%、73.33%、88.10%；诊断N分期总准确度为71.43%，N₀期、N₁期、N₂期准确度分别为72.73%、60.00%、77.27%。术前CT平扫及增强扫描联合多模式重建技术诊断T、N分期与病理诊断T、N分期一致性好（Kappa=0.725，0.547，均P<0.05）。

CT平扫及增强扫描联合多模式重建技术对结肠肿瘤病变诊断准确率高，可较好的显示结肠癌肠腔情况，明确肿瘤侵犯范围及腹膜后淋巴结转移情况，还可用于术前分期诊断，临床应用价值较高。

To evaluate the diagnostic value of CT plain scan and enhanced scan combined with multi mode reconstruction in colon tumor.

The clinical data of 96 patients with suspected colonic lesions who underwent colonoscopy examination in Guang′an People′s Hospital were retrospectively analyzed. Seventy cases of colon cancer and 26 cases of colon polyps were confirmed by pathology. All patients were scanned and enhanced by CT scan, and the scan data were sent to the post-processing workstation for multiplanar reconstruction (MPR), transparency (Raysum) and colonic virtual endoscopy (CTVC) images. The CT findings of colon cancer were analyzed. The preoperative CT images of colon cancer underwent T and N staging, and compared with the postoperative pathological findings.

CT scan and enhanced scan combined with multi mode reconstruction technique showed the detection rate of colon cancer lesions and colon polyps detection rate of 100%. CT scan and enhanced scan combined with multimode reconstruction showed no significant difference in the diagnosis of serosa, adjacent organs and retroperitoneal lymph nodes (P>0.05). Preoperative CT scan and enhanced scan with multi model reconstruction in the diagnosis of T staging, less than T₂ period, T₃ period and T₄ period accuracy were 84.29%, 75%, 73.33%, 88.10%, respectively. The overall accuracy of the diagnosis of N staging, N₀ staging, N₁ staging, N₂ staging were 71.43%, 72.73%, 60%, and 77.27%, respectively. The preoperative CT scan and enhanced scan combined with multi mode reconstruction technique showed good agreement between the diagnosis of T and N staging and pathological diagnosis (Kappa=0.725, 0.547, P<0.05).

CT scan and enhanced scan combined with multi mode reconstruction technique have high accuracy in diagnosis of colonic tumor lesions, and can better display the intestinal cavity of colon cancer, which can also determine the extent of tumor invasion and retroperitoneal lymph node metastasis. It can be used for preoperative staging diagnosis, and has higher clinical value.