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

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)