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目的探讨结肠充气造影CT低剂量平扫结合常规剂量增强扫描在结肠癌诊断中的应用价值。方法选取2013年1月-2015年12月医院收治的结肠癌患者35例。分别进行50mAs、150mAs剂量下的平扫和增强扫描,观察图像质量,分析诊断结果。结果不同剂量下诊断病灶部位相一致(P>0.05),其中50mAs平扫+增强在腹部淋巴肿大/肝转移的检出率低。150mAs常规剂量增强扫描在腔外组织、肝脏组织上的图像质量明显高于50mAs低剂量平扫,差异有统计学意义(P<0.05)。结论针对结肠癌患者,实施结肠充气造影CT低剂量平扫+常规剂量增强扫描效果确切,不仅能够满足诊断要求、获得良好的图像质量,还可以降低辐射量,值得临床推广应用。
Objective To investigate the value of low-dose CT combined with routine contrast-enhanced scanning in the diagnosis of colon cancer. Methods From January 2013 to December 2015, 35 patients with colon cancer were admitted to our hospital. Respectively, 50mAs, 150mAs the dose of plain scan and enhanced scan, observe the image quality, analysis of diagnostic results. Results The diagnostic lesion sites at different doses were consistent (P> 0.05). The detection rate of 50 mAs plaque plus enhancement in abdominal lymph nodes and liver metastases was low. The image quality of extracavity tissue and liver tissue of 150mAs routine dose - enhanced scanning was significantly higher than that of 50mAs low - dose plain scanning, the difference was statistically significant (P <0.05). Conclusions For patients with colon cancer, the CT scan with low-dose CT and routine dose-enhanced CT is effective. It can not only meet the diagnostic requirements, obtain good image quality, but also reduce the radiation dose, which is worthy of clinical application.