低剂量和常规剂量螺旋CT胸部平扫对肺部结节显示的差异分析  

24-row spiral CT low-dose scan of pulmonary nodules and the diagnostic value of early lung cancer

作　　者：黄嘉本 农凡平 胡意扬 赵贞翔 Huang Jiaben;Nong Fanping;Hu Yiyang;Zhao Zhenxiang(Department of Imaging,Baise Traditional Chinese Medicine Hospital,Guangxi533000,China)

机构地区：[1]广西壮族自治区百色市中医医院影像科,533000

出　　处：《实用医学影像杂志》2024年第2期147-151,共5页Journal of Practical Medical Imaging

摘　　要：目的探讨早期肺癌中24排螺旋CT低剂量扫描的应用价值。方法取2022年1月至2023年10月我院接收的42例肺结节及早期肺癌患者。入选患者均接受24排螺旋CT常规剂量和低剂量扫描,分析、比较其扫描结果。结果2组肺结节直径及其检出率比较差异无统计学意义(P>0.05);低剂量组确诊率较常规剂量组高,而漏诊率低(P<0.05);2组图像优良率比较差异无统计学意义(P>0.05);低剂量组的最小红斑量(MERD)、剂量长度乘积(DLP)、扫描总电流时间积(mAs)及权重CT剂量指数(CTDIW)指标均较常规剂量组低,而有效扫描mAs指标则较高(P<0.05)。结论在肺部结节和早期肺癌诊断中,24排螺旋CT低剂量扫描可提高肺结节检出率,且辐射损害小,利于后期方案的针对性实施。Objective To investigate the application value of 24-slice spiral CT low-dose scanning in early lung cancer.Methods From January 2022 to October 2023,42 patients with lung nodules and early lung cancer were selected.All the enrolled patients received 24-slice spiral CT conventional dose and low-dose scanning,and the scanning results were analyzed and compared.Results There was no difference in lung nodule diameter and detection rate between the two groups(P>0.05).The diagnosis rate of low-dose group was higher than that of conventional dose group,but the missed diagnosis rate was lower(P<0.05).There was no difference between the two components(P>0.05).MERD,DLP,total mAs and CTDIW indexes in low-dose group were lower than those in conventional dose group,while mAs indexes in effective scan were higher(P<0.05).Conclusion In the diagnosis of pulmonary nodules and early lung cancer,low-dose 24-hour spiral CT scanning can improve the detection rate of pulmonary nodules and reduce radiation damage,which is conducive to the targeted implementation of later plans.

关 键 词：肺肿瘤 体层摄影术 螺旋计算机 低剂量扫描 肺部结节 检出率 

分 类 号：R734.2[医药卫生—肿瘤] R730.44[医药卫生—临床医学]