Research and analysis

Computed tomography (CT): national patient dose audits

This document (PHE-CRCE-013) summaries the results of the third national CT survey for the UK.



A third national computed tomography (CT) survey for the UK has provided a useful snapshot of patient doses for 2011.

Scan details for some 47,000 individual patients (rather than standard protocols as principally studied for the previous national surveys) relating to 13 common types of CT examination on adults, and also head examinations on children, were collected by electronic questionnaires voluntarily submitted by CT centres for a widely distributed sample of 182 scanners. This represented nearly a third of all UK scanners, all of which now include multi-detector-row (MDCT) technology.

This report supersedes the 2003 review.