Rebecca Smith-Bindman, Yifei Wang, Philip Chu, Robert Chung, Andrew J Einstein, Jonathan Balcombe, Mary Cocker, Marcos Das, Bradley N Delman, Michael Flynn, Robert Gould, Ryan K Lee, Thomas Yellen-Nelson, Sebastian Schindera, Anthony Seibert, Jay Starkey, Saravanabavaan Suntharalingam, Axel Wetter, Joachim E Wildberger, Diana L Miglioretti
OBJECTIVE: To determine patient, institution, and machine characteristics that contribute to variation in radiation doses used for computed tomography (CT). DESIGN: Prospective cohort study. SETTING: Data were assembled and analyzed from the University of California San Francisco CT International Dose Registry. PARTICIPANTS: Standardized data from over 2.0 million CT examinations of adults who underwent CT between November 2015 and August 2017 from 151 institutions, across seven countries (Switzerland, Netherlands, Germany, United Kingdom, United States, Israel, and Japan)...
January 2, 2019: BMJ: British Medical Journal