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Radiology

Chapter Five

TermDefinition
Acute Radiation Syndrome Symptoms of the short-term radiation effects after a massive dose of ionizing radiation.
ALARA As low as reasonably achievable. Adopted as a culture and attitude of professionals who work with ionizing radiation to minimize radiation exposure and risks.
Dose Rate The radiation dose received per unit of time.
Dose-Response Curve Graph produced when radiation dose and the resultant biological response are plotted.
Effective Dose Equivalent Aids in making more accurate comparisons between different radiographic exposures. Compensates for the differences in area exposed and the tissues that may be in the path of the x-ray beam. Measured in microsieverts (┬ÁSv).
Irreparable Injury Following exposure to radiation, injury that results in damage that is not repaired during the recovery period. May give rise to later long-term effects of radiation exposure.
Latenet Period The time between exposure to radiation and the first clinically observable symptoms. Latent means hidden.
Radioresistant Refers to a substance or tissue that is not easily injured by ionizing radiation.
Radiosenesitive Refers to a substance or tissue that is relatively susceptible to injury by ionizing radiation.
Recovery Period Period following exposure to radiation, where some healing can take place.
Somatic Cells Any body cells except the reproductive cells.
Created by: daisenmurray