| 摘要: |
| ［摘要］ 目的 探讨低剂量CT结肠成像（CTC）与内镜检查评估结肠癌有无、肿块部位、分型的一致性。方法 对65例经病理证实结肠癌患者行结肠低剂量CT扫描及内镜检查，观察结肠癌有无、肿块部位、分型。以病理结果作为金标准，对CTC与内镜判断结肠癌有无、肿块部位、分型行Kappa一致性检验，并记录扫描的CT剂量指数（CTDIw）。结果 内镜诊断结肠癌阴性4例，阳性61例，肿块位于直肠8例，乙状结肠25例，降结肠13例，横结肠11例，升结肠8例；肿块Ⅰ型38例，Ⅱ型14例，Ⅲ型7例，Ⅳ型6例。CTC判断结肠癌阴性5例，阳性60例，肿块位于直肠8例，乙状结肠25例，降结肠16例，横结肠10例，升结肠6例；肿块Ⅰ型36例，Ⅱ型16例，Ⅲ型7例，Ⅳ型6例。CTC与内镜CRC诊断结果一致性较高（Kappa=0.881，P<0.01）；CTC诊断结肠癌的符合率为98.5%。CTC与内镜CRC的结肠癌肿块部位、分型结果一致性较高（Kappa值分别为0.897和0.949，P均<0.01）。结论 辐射剂量降低至1.68 mGy的CTC诊断结肠癌及肿块部位、分型，与内镜诊断有较高的一致性。 |
| 关键词: 结肠癌，肿块 结肠成像 X线计算机体层摄影术 辐射剂量 |
| DOI：10.3969/j.issn.1674-3806.2015.04.17 |
| 分类号:R 735.3+5 |
| 基金项目: |
|
| Comparison of low-dose CT colonography and sigmoidoscopy in the diagnosis of colon carcinoma |
|
LI Jia-yan, HE Xin, GAO Chun-ping, et al.
|
|
Department of Radiology, the First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning 530023, China
|
| Abstract: |
| ［Abstract］ Objective To study the consistence of low-dose CT colonography（CTC） and sigmoidoscopy in the diagnosis, site and classification of colon carcinoma（CRC）.Methods A total of 65 patients of CRC were confirmed by pathology. All the patients were examined by endoscopy and low doses CTC. The location, types of tumour were observed by endoscopy and CTC, and Kappa consistence test was applied with the pathologic findings as golden standard, and calculated CT dose index(CTDIw) in prone was recorded.Results Sixty-one patients were diagnosed as having CRC by endoscopy and 4 were negative. In 61 positive patients, 8 tumors located in the rectum, 25 in the colon sigmoideum, 13 in the descending colon, 11 in the colon transversum, 8 in the ascending colon, and Borrmann showed, Ⅰ in 38, Ⅱ in 14, Ⅲ in 7, Ⅳ in 6. CTC diagnosed 60 cases of CRC and 5 cases with negative results. In 61 positive patients, 6 tumors located in the rectum, 23 in the colon sigmoideum, 15 in the descending colon, 10 in the colon transversum, 6 in the ascending colon, and Borrmann showed, Ⅰ in 36, Ⅱ in 16, Ⅲ in 7, Ⅳ in 6. There was high consistency between CTC and sigmoidoscopy in the diagnosis of CRC（Kappa=0.881, P<0.01）, with the coincidence of CTC was 98.5%. There was high consistency between CTC and sigmoidoscopy in the classification of CRC（Kappa values were 0.897 and 0.949, P<0.01）.Conclusion Reduction of the effective dose to 1.68 mGy significantly affects images quality on CTC, there is high consistency between CTC and sigmoidoscopy in the diagnosis, site and classification of CRC. |
| Key words: Colon carcinoma Tumor Colonography X-ray computer tomography Radiation dose |
