Monitoring of CT dose and analysis of radiological protection in CT module applied for COVID-19 prevention and control

Q4 Medicine

中华放射医学与防护杂志 Pub Date : 2020-03-16 DOI:10.3760/CMA.J.ISSN.0254-5098.0008

Ansheng Liu, Bolin Huang, Cuiling Li, Kai Yang, H. Du, Guilin Yi

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Abstract

Objective To investigate the safety and protection level of radiological treatment in the CT module in Wuhan during the prevention and treatment of COVID-19. Methods The layout position of the CT module in makeshift hospitals, radiological protection facilities and personal protective equipment were investigated. Based on the national standards, CT dose index and evaluated radiological protection level of the CT module were measured. Results The layout position of the CT module in makeshift hospitals are reasonable, and radiological protection facilities are well-equipped. 87.0% of them had been accepted. In 23 CT module, 20 of which were up to standards. The other three had 1 detection points which exceed the national standards, and then had been modified immediately, so as to reach the national standards. In addition, CT dose index was measured in 7 CT module of them, the variation of body CTDIW was less than 7.5%. Conclusions The CT module in Wuhan meet the requirements of the radiological safety and protection level during the prevention and treatment of COVID-19. Key words: COVID-19; CT module; Radiological protection; CT dose index (CTDI)

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新型冠状病毒肺炎防控中CT模块的剂量监测及放射防护分析

目的了解武汉市新型冠状病毒肺炎防治过程中CT模块放射治疗的安全性和防护水平。方法对方舱医院、放射防护设施、个人防护用品的CT模块布置位置进行调查。根据国家标准，测量了CT模块的剂量指数和评估放射防护水平。结果方舱医院CT模块布置位置合理，放射防护设施齐全。录取率为87.0%。在23个CT模块中，20个模块达到标准。另外3家有1个检测点超过国家标准，随即进行了整改，达到国家标准。另外，对其中7个CT模块的CT剂量指数进行了测量，机体CTDIW的变化均小于7.5%。结论武汉市CT模块满足新型冠状病毒肺炎防治期间的放射安全防护水平要求。关键词:COVID-19;CT模块;放射防护;CT剂量指数(CTDI)

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