MEDRADSC 3DA3 Lecture Notes - Lecture 10: Informed Consent, Fetus, Breastfeeding
8 Aug 2020
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Document Summary
In the us, 11% of ct scans done between 2000 and 2007 were performed on children. Why is dose such a concern: entrance dose is a lot less than in the organs, children are smaller so the center of body (area of vital organs) will get more dose than an adult. Increased sensitivity in children: children are more susceptible to the effects of radiation for a couple of reasons, they are growing! More cells in g2 phase also 4-6x more likely to get side effects: they live longer, cancer latency, dose accumulation. Increased dose + increased sensitivity a justifiable concern: the reality, the combination of increased organ doses and a higher susceptibility make pediatric ct. A pediatric ct scan has a 1 in 1000 chance of causing a. Fatal cancer in single scan not multiple. In the adult population, the risk is believed to be approximately 1 in 10,000 but varies considerably with age.
