International variation in radiation dose for computed tomography examinations: prospective cohort study.

ABSTRACT:

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).

Main outcome measures

Mean effective doses and proportions of high dose examinations for abdomen, chest, combined chest and abdomen, and head CT were determined by patient characteristics

SUBMITTER: Smith-Bindman R 

PROVIDER: S-EPMC6314083 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature