CT个体化低剂量扫描在普通人群胸部体检中的应用

发布时间：2019-07-21 11:12

【摘要】：目的探讨CT个体化低剂量扫描在普通人群胸部体检中应用的可行性。方法采用整群抽样的调查方法,从拟行双排螺旋CT肺部检测者2 300例中随机选取458例再随机分为个体化低剂量组298例和常规剂量组160例。采用GE HiSpeed Dual双排探测螺旋CT,个体化低剂量组按照BMI18.9、18.9~23.9、24 kg/m~2分别使用30、35、40 mAs管电流低剂量扫描,常规剂量组均给予60 mAs管电流常规剂量扫描。比较两组胸部扫描图像质量及肺结节检出率。结果个体化低剂量组与常规剂量组图像质量良好(清晰+较清晰)率分别为93.3%、99.4%,肺结节检出率分别为17%、18%,两组图像质量及肺结节检出率比较均无统计学差异(P均0.05)。结论CT个体化低剂量扫描不影响图像质量且能降低胸部体检者受照剂量,此对普通人群的肺癌筛查有重要价值。
[Abstract]:Objective to explore the feasibility of individualized low dose CT scanning in chest physical examination of general population. Methods by cluster sampling, 458 cases were randomly divided into individualized low dose group (n = 298) and conventional dose group (n = 160) from 2300 cases of pulmonary examination with double spiral CT. The results showed that 458 cases were randomly divided into individualized low dose group (n = 298) and conventional dose group (n = 160). GE HiSpeed Dual double row detection spiral CT, individualized low dose group was used according to BMI18.9,18.9~23.9,24 kg/m~2 for 30, 35, 40 mAs tube current low dose scanning, and the conventional dose group was given 60 mAs tube current routine dose scan. The image quality of chest scan and the detection rate of pulmonary nodules were compared between the two groups. Results the image quality (clear and clear) rate of individualized low dose group and conventional dose group was 93.3%, 99.4%, 17% and 18%, respectively. there was no significant difference in image quality and pulmonary nodules detection rate between the two groups (P 0.05). Conclusion CT individualized low dose scanning does not affect the image quality and can reduce the exposure dose of chest examination patients, which is of great value in the screening of lung cancer in the general population.
【作者单位】：山东黄河医院;山东省肿瘤医院;
【基金】：山东黄河科技进步奖获奖项目(JB2016-22-01)
【分类号】：R816.4

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