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首页> 外文期刊>Chinese journal of academic radiology. >Assessment of radiation doses and image quality of multiple low-dose CT exams in COVID-19 clinical management
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Assessment of radiation doses and image quality of multiple low-dose CT exams in COVID-19 clinical management

机译：评估COVID-19临床管理中多剂量CT考试的辐射剂量和图像质量

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Abstract Purpose The Corona Virus Disease 2019 (COVID-19) was first reported in December 2019 from an outbreak of unexplained pneumonia in Wuhan (Hubei, China) that subsequently spread rapidly around the world. Because of the public health emergency, chest CT has been widely used for sensitive detection and diagnosis, monitoring the changes of lesions and also for treatment evaluation. The purpose of this study was to investigate radiation dose and image quality of chest CT scans received by COVID-19 patients and to evaluate the oncogenic risk of multiple chest CT examinations.Methods A retrospective review of 33 patients with RT-PCR confirmed COVID-19 infection was performed from January 31, 2020 to February 19, 2020. The date of each CT exam and respective radiation dose for each exam was recorded for all patients. Multiple pulmonary CT scans were obtained during diagnosis and treatment procedure. Scan frequency, total scan times, radiation dose, and image quality were determined.Results Thirty-three patients (15 males and 18 females, age 21–82?years) with confirmed COVID-19 pneumonia underwent a total of 143 chest CT scans. The number of CT scans per patient was 4?±?1, with a range of 2–6. The time interval between two consecutive chest CT scans was 3?±?1?days. The average effective dose from a single chest CT scan was 1.21?±?0.10?mSv, with a range of 1.02–1.44?mSv. The average cumulative effective dose per patient was 5.25?±?1.52?mSv, with a range of 2.24–7.48?mSv. The maximum cumulative effective dose was 7.48?mSv for six CT examinations during COVID-19 treatment. Based on subjective image quality analysis, the visual scoring of CT findings was 11.23?±?1.35 points out of 15 points.Conclusions The frequency, total number and image quality of chest CT scans should be reviewed carefully to guarantee minimally required CT scans during the COVID-19 management.
机译：摘要目的是2019年Corona病毒疾病（COVID-19）于2019年12月首次报道，该疾病是由于武汉（中国湖北部）无法解释的肺炎爆发，随后在世界各地迅速蔓延。由于公共卫生紧急情况，胸部CT已被广泛用于敏感检测和诊断，监测病变的变化以及治疗评估。这项研究的目的是研究COVID-19患者接受的胸部CT扫描的辐射剂量和图像质量，并评估多次胸部CT检查的致癌风险。方法对33例RT-PCR患者的回顾性评论证实了COVID-COVID-19从2020年1月31日至2020年2月19日进行感染。每次CT考试的日期和所有患者的每次检查的相应辐射剂量。在诊断和治疗过程中获得了多次肺CT扫描。确定了扫描频率，总扫描时间，辐射剂量和图像质量。三十三例患者（15名男性和18名女性，年龄在21-82岁年龄），确认的Covid-19-19-肺炎总共接受了143张胸部CT扫描。每位患者的CT扫描数为4？±？1，范围为2-6。两次连续的胸部CT扫描之间的时间间隔为3？±？1？天。来自单个胸部CT扫描的平均有效剂量为1.21？±？0.10？msv，范围为1.02–1.44？msv。每位患者的平均累积有效剂量为5.25？±？1.52？msv，范围为2.24–7.48？msv。在COVID-19治疗期间，最大累积有效剂量为7.48？MSV。基于主观图像质量分析，CT发现的视觉评分为11.23？±？1.35分15分。结论应仔细审查胸部CT扫描的频率，总数和图像质量COVID-19管理。

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