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Oxygen Enhancement RatioThe Oxygen Enhancement Ratio (OER) in radiobiology refers to the enhancement of therapeutic or detrimental effect of ionizing radiation due to the presence of oxygen. The effect is most notable in ionizing radiation dose. Additional recommended knowledgeUses in medicineThe effect is used in medical physics to increase the effect of radiation therapy in oncology treatments. Additional oxygen abundance creates additional free radicals and increases the damage to the target tissue. In solid tumors the inner parts become less oxygenated than normal tissue and up to three times higher dose is needed to achieve the same tumor control probability as in tissue with normal oxygenation. See alsoReferencesEric J. Hall and Amato J. Giaccia: Radiobiology for the radiologist, Lippincott Williams & Wilkins, 6th Ed., 2006 Categories: Radiation oncology | Nuclear medicine | Radiobiology |
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Oxygen_Enhancement_Ratio". A list of authors is available in Wikipedia. |