Objective To investigate the individual external dose level of medical radiation staffs in Guangzhou City.Methods The medical radiation staffs of Guangzhou City who conducted individual dose monitoring at Guangdong Province Hospital Center for Occupational Diseases Prevention and Treatment from 2008 to 2014 were selected as study subjects by convenient sampling method.Their individual dosage monitoring data were analyzed.Results A total of 17 754 person-times were monitored in 7 years.The annual collective ...