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J Radiol Prot. 2014 Dec;34(4):825-41. doi: 10.1088/0952-4746/34/4/825. Epub 2014 Oct 23.

Estimating the lifetime risk of cancer associated with multiple CT scans.

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Federal State Institution Medical Radiological Research Centre of the Russian Ministry of Health, 4 Korolyov Street, Obninsk, Kaluga region, 249036, Russia.


Multiple CT scans are often done on the same patient resulting in an increased risk of cancer. Prior publications have estimated risks on a population basis and often using an effective dose. Simply adding up the risks from single scans does not correctly account for the survival function. A methodology for estimating personal radiation risks attributed to multiple CT imaging using organ doses is presented in this article. The estimated magnitude of the attributable risk fraction for the possible development of radiation-induced cancer indicates the necessity for strong clinical justification when ordering multiple CT scans.

[Indexed for MEDLINE]

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