"Radiation dose levels in chest computed tomography scans of coronavirus disease 2019 pneumonia A survey of 2119 patients in Chongqing, southwest China"

作者全名："Zhou, Yang; Zheng, Yineng; Wen, Yun; Dai, Xin; Liu, Wengang; Gong, Qihui; Huang, Chaoqiong; Lv, Fajin; Wu, Jiahui"

作者地址："[Zhou, Yang; Zheng, Yineng; Gong, Qihui; Huang, Chaoqiong; Lv, Fajin; Wu, Jiahui] Chongqing Med Univ, Affiliated Hosp 1, Dept Radiol, Chongqing, Peoples R China; [Wen, Yun] Chongqing Univ, Gorges Hosp 3, Dept Radiol, Chongqing, Peoples R China; [Dai, Xin] Chongqing Publ Hlth, Dept Radiol, Med Ctr, Chongqing, Peoples R China; [Liu, Wengang] Chongqing Med Univ, Yongchuan Hosp, Dept Radiol, Chongqing, Peoples R China"

通信作者："Lv, FJ (corresponding author), Chongqing Med Univ, Affiliated Hosp 1, Youyi Rd, Chongqing 400016, Peoples R China."

来源：MEDICINE

ESI学科分类：CLINICAL MEDICINE

WOS号：WOS:000680622300079

JCR分区：Q2

影响因子：1.6

年份：2021

卷号：100

期号：31

开始页：　

结束页：　

文献类型：Article

关键词：computed tomography; coronavirus disease 2019 pneumonia; effective dose; radiation exposure

摘要："To investigate computed tomography (CT) diagnostic reference levels for coronavirus disease 2019 (COVID-19) pneumonia by collecting radiation exposure parameters of the most performed chest CT examinations and emphasize the necessity of low-dose CT in COVID-19 and its significance in radioprotection. The survey collected RIS data from 2119 chest CT examinations for 550 COVID-19 patients performed in 92 hospitals from January 23, 2020 to May 1, 2020. Dose data such as volume computed tomography dose index, dose-length product, and effective dose (ED) were recorded and analyzed. The radiation dose levels in different hospitals have been compared, and average ED and cumulative ED have been studied. The median dose-length product, volume computed tomography dose index, and ED measurements were 325.2 mGy cm with a range of 6.79 to 1098 mGy cm, 9.68 mGy with a range of 0.62 to 33.80 mGy, and 4.55 mSv with a range of 0.11 to 15.37 mSv for COVID-19 CT scanning protocols in Chongqing, China. The distribution of all observed EDs of radiation received by per patient undergoing CT protocols during hospitalization yielded a median cumulative ED of 17.34 mSv (range, 2.05-53.39 mSv) in the detection and management of COVID-19 patients. The average number of CT scan times for each patient was 4.0 +/- 2.0, and the average time interval between 2 CT scans was 7.0 +/- 5.0 days. The average cumulative ED of chest CT examinations for COVID-19 patients in Chongqing, China greatly exceeded public limit and the annual dose limit of occupational exposure in a short period. For patients with known or suspected COVID-19, a chest CT should be performed on the principle of rapid-scan, low-dose, single-phase protocol instead of routine chest CT protocol to minimize radiation doses and motion artifacts."

基金机构：Emergency Research Project of Chongqing Medical University [CQMUNCP0201] Funding Source: Medline

基金资助正文：