新型冠状病毒肺炎对某综合医院CT胸部扫描频次的影响

目的 探讨新型冠状病毒肺炎对CT胸部扫描频次的影响。方法 采用回顾性研究，通过某医院医疗大数据平台提取2020年1月1日—12月31日及2019年同期门急诊及住院患者人次和行胸部CT影像检查的患者信息进行分析，并用χ²检验进行统计学分析。结果 2020年门急诊患者行胸部CT检查比例为2.48%，高于2019年度（1.47%），差异具有统计学意义（χ² = 581.7，P < 0.000）。2020年住院患者行胸部CT检查比例为35.47%，高于2019年度（28.01%），差异具有统计学意义（χ² = 182.0，P < 0.000）。结论 新型冠状病毒肺炎疫情下，该院2020年胸部CT检查比例比2019年同期呈现明显上升趋势，增加医疗照射所致集体剂量，医院应重视胸部CT扫描的正当性判断。

Impact of COVID-19 on chest CT scan frequency in a general hospital

Objective To explore the effect of coronavirus disease 2019 (COVID-19) on the frequency of chest CT scan. Methods A retrospective study was conducted to extract information on the number of outpatient, emergency, and inpatient visits and patients who had chest CT imaging examination from January 1 to December 31, 2020 and in the same period in 2019 through the hospital’s medical data platform for analysis, and the chi-square test was used to analyze whether the difference in the proportion of patients who had chest CT imaging examination between 2019 and 2020 was statistically significant. Results The proportion of outpatients and emergency patients with chest CT examination was significantly higher in 2020 than in 2019 (2.48% vs 1.47%, χ² = 581.7, P < 0.000). The proportion of inpatients who underwent chest CT examination was significantly higher in 2020 than in 2019 (35.47% vs 28.01%, χ² = 182.0, P < 0.000). Conclusion Under the COVID-19 epidemic, the proportion of chest CT examination in this hospital in 2020 shows a significant upward trend compared with the same period in 2019, which will increase the collective dose due to medical exposure, and the hospital should pay attention to the determination of the legitimacy of chest CT scan.