Application of Low Dose CT Scanning in Coronavirus Disease 2019
WANG Shaofang1
, PENG Chengdong1
, HU Junwu1
, SHI Mingguo2
, XIA Liming1
1. Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan
Hubei 430030, China; 2. Department of Radiology, Xijing Hospital, The Air Force Medical University, Xi’an Shaanxi 710032, China
Abstract：Objective To analyze the CT images of coronavirus disease 2019 (COVID-19) patients and the radiation control advantages
in low dose CT scanning. Methods The age distribution, the times of multiple examinations and the interval of repeated imaging
on 98 patients’ CT scanning information in fever clinic and emergency department were recorded and analyzed. The radiation dose
under different CT scanning parameters was compared, and the protective effect of low dose CT scanning was revealed. Results The
proportion of fever patients who undergone CT scan was younger in the near future that COVID-19 was popular. Repeated CT scan
was common and the time interval was so short. Low dose CT scan (Low dose Sn100 kV) of COVID-19 patients was significantly
lower than that of conventional chest CT scan (Thorax 110 kV, Thorax 100 kV), and the results had significant difference (P<0.001).
Conclusion CT scanning technology is a rapid and efficient examination technology for the diagnosis and treatment of COVID-19
during the epidemic period, and it is also the gold standard for the clinical diagnosis of COVID-19. CT low-dose scanning technology
can significantly reduce the radiation dose of patients. In the special period of COVID-19, the long-term beneficial effect applied to
COVID-19 patients cannot be ignored using low-dose CT scanning to protect young patients of childbearing age and patients who
need repeated examinations.
