Authors' objectives:

What is the evidence for the risk of cancer associated with radiation exposure from computed tomography?

Authors' recommendations: All of the research identified stated that radiation risk is a concern at a patient and population level which can be offset in different ways. The three guidelines provide some Canadian, pediatric, and adult recommendations in regard to radiation risk and CT examinations. However, with the lack of reported systematic methodology or transparent evidence base, the strength of the recommendations is unclear.Most of the research available on this topic is a weaker level of evidence. Thus, it can be difficult to interpret the true risk that radiation poses for individuals and subsequently population level health. Before firm conclusions and more detailed radiation dosing guidelines can be published, additional research is required that focuses on the relationship between CT quality and radiation dose and the relationship between CT radiation and cancer risk for patients of various subpopulations. Based on the current evidence, there is a valid and measurable risk associated with exposing patients to radiation from CT examinations. Measures taken to limit radiation exposure from CT examinations with the intent to minimize radiation-related cancer could be beneficial.

Project Status: Completed

URL for project: http://www.cadth.ca/media/pdf/Computed_Tomography_final.pdf

Year Published: 2009

English language abstract: An English language summary is available

Publication Type: Not Assigned

Country: Canada

Organisation Name: Canadian Agency for Drugs and Technologies in Health

Contact Address: 600-865 Carling Avenue, Ottawa, ON K1S 5S8 Canada. Tel: +1 613 226 2553; Fax: +1 613 226 5392;

Contact Name: requests@cadth.ca

Contact Email: requests@cadth.ca

Copyright: Canadian Agency for Drugs and Technologies in Health (CADTH)