Oxygen enhancement ratio
Revision as of 17:45, 12 August 2021 by Chris Clement (talk | contribs) (Created page with "100px|frameless|right|link=ICRP Glossary The ratio of the absorbed dose required to cause the same biological endpoint in hypoxic conditions as in...")
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)
Return to Glossary