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  Dear Colleague,

Thank you for undertaking this preliminary survey to help inform the 4th review of doses from CT examinations in the UK.

The CT dose survey intends to look at the most frequent CT examinations, and/or those with the highest dose. The survey will only be considering adult examinations. A separate survey by IPEM in collaboration with PHE will be carried out to look at paediatric examinations.

The purpose of this preliminary survey is to help identify the examinations to request data for, as well as to get information on the level of detail that can be provided by different hospitals.

Please answer as many questions as possible. If you cover multiple hospitals, please complete a separate survey per hospital.

Thank you,

John Holroyd
Medical Dosimetry Group
Public Health England


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