Difference between revisions of "Oxygen enhancement ratio"
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Latest revision as of 17:45, 12 August 2021
The ratio of the absorbed dose required to cause the same biological endpoint in hypoxic conditions as in normoxic conditions. Hypoxia often occurs in the middle of a rapidly growing tumour. The OER of x rays is approximately 3 while high-LET radiation tends to show smaller OERs down to 1 indicating that high-LET radiation is effective against hypoxic tumours.
(ICRP Publication 127, 2014)
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