A multi-provincial survey and analysis of radiation doses from pediatric CT in China

Abstract Objective To survey and analyze the radiation doses of pediatric CT in some provinces (autonomous region) or municipalities in China, and compare them with the data released by the relevant domestic and international organizations, so as to identify the current status of Chinese pediatric CT radiation doses. Methods Radiation doses of paediatric CT were collected during August to December 2016 from 40 hospitals (including 18 Children’s hospitals) in 15 provinces, municipalities or autonomous regions across the China. The procedures of head CT, chest CT and abdomen CT were selected in these hospitals, and 10 patients in each group of 0 - Results The 75th percentiles of the distribution of CTDI and DLP in different age groups of 0 - 0.05). The dose levels of different provinces or municipalities in the same procedure and age group were not consistent, and the differences were statistically significant (P Conclusions The 75th percentile values of the distribution of the pediatric CT doses obtained from the survey were inconsistent with those released by the relevant national and international organizations. It is necessary to update the national DRLs for pediatric CT on the basis of the actual survey data.