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Results of a survey of doses to paediatric patients undergoing common radiological examinations

Regional Medical Physics Department, Newcastle General Hospital, Westgate Road, Newcastle-upon-Tyne NE4 6BE, UK ^* Department of Radiology, Royal Victoria Infirmary, Queen Victoria Road, Newcastle-upon-Tyne NE1 4LP, UK

A survey has been performed to investigate typical radiation dose levels for children undergoing a number of common radiological examinations. Doses have been assessed using a Diamentor ionization chamber to measure dose–area product, and by attaching thermoluminescent dosemeters to the patient's skin to determine entrance and organ doses. The survey has been automated by using a personal computer for data collection and storage. Doses have been monitored for a large number of children, primarily in a dedicated paediatric X-ray room, and the results presented can be used as a baseline for making comparative measurements elsewhere. Entrance skin doses were found to range from 0.3 mGy to 5.7 mGy for radiographic examinations, and values of dose–area product from 3 to 225 cGy cm². The corresponding dose ranges for fluoroscopic examinations are 7.4–26.2 mGy and 130–1241 cGy cm².

Key Words: Paediatric radiology • Radiation protection

Received for publication July 9, 1991. Revision received September 12, 1991. Accepted for publication September 20, 1991.

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