Objective The aim of the study was to evaluate the ionizing radiation exposure in patients with Coronavirus disease 2019 (COVID-19). Materials and Methods This was a retrospective study in which all patients presented with suggestive symptoms of COVID-19 were included. The study was carried out in a university-affiliated private hospital in Istanbul, Turkey. Biological radiation dose exposure (cumulative effective dose: CED) was evaluated in millisievert (mSv) units. Results A total of 1410 patients were included in the study. Of all study subjects, 804 patients (57%) underwent only one chest computed tomography (CT) procedure. Six hundred and six patients (43%) had two or more chest CT procedures. Median CED was 6.02 (min–max:1.67–16.27) mSv. The number of patients who were exposed to ≤ 5 mSv were 149 (24.6%), whereas 457 patients (75.4%) were exposed to >5 mSv. Conclusion The radiation exposure in COVID-19 patients seems unjustifiably high. Awareness should be increased as to the proper use of chest CT in COVID-19 as per to the society recommendations.

中文翻译：

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COVID-19 患者的电离辐射暴露：超出需要

目的 本研究的目的是评估 2019 年冠状病毒病 (COVID-19) 患者的电离辐射暴露情况。材料和方法 这是一项回顾性研究，其中包括所有出现 COVID-19 提示症状的患者。该研究是在土耳其伊斯坦布尔的一家大学附属私立医院进行的。生物辐射剂量暴露（累积有效剂量：CED）以毫西弗（mSv）为单位进行评估。结果共有1410名患者纳入研究。在所有研究对象中，804 名患者 (57%) 仅接受了一次胸部计算机断层扫描 (CT) 手术。606 名患者 (43%) 接受过两次或两次以上胸部 CT 手术。中位 CED 为 6.02（最小–最大：1.67–16.27）mSv。暴露于≤5mSv的患者人数为149名(24.6％)，而暴露于>5mSv的患者为457名(75.4％)。结论 COVID-19 患者的辐射暴露似乎不合理地高。根据协会的建议，应提高对在 COVID-19 中正确使用胸部 CT 的认识。