CT Scan Radiation Triples Brain Tumor Risk in Children

Ct scanner - Copyright: Science Photo LibraryNew research highlights the risk of ionising radiation from computed tomography (CT) scans given to children. Radiation exposure from 2 to 3 CT scans of the head in childhood (aged under 15 years)—giving a cumulative dose of around 60 mGy—could increase the risk of developing brain cancer; around 5 to 10 scans (cumulative dose around 50 mGy) could increase the risk of leukaemia. While the absolute risk of these cancers occurring after CT scanning is small, radiation doses from CT scans should be kept as low as possible and alternative procedures, that do not use ionising radiation, should be considered.

US National Cancer Institute and UK Department of Health.

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