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Arrt Flashcard
Section I: Radiation Protection 1: Biological Aspects of Radiation
Question | Answer |
---|---|
What type of dose-response relationship is characterized by an early response to a high-dose exposure? | Deterministic (nonstochastic) |
What type of dose-response relationship is characterized by a late response to low-dose exposure(s)? | Stochastic (probabilistic) |
What is described as a measure of the rate at which energy is transferred from ionizing radiation to soft tissue? | LET (linear energy transfer) |
What are two examples of radiation-induced conditions that follow a linear nonthreshold dose-response relationship? | Genetic effects, radiation-induced cancer, leukemia |
Skin effects that result from fluoroscopic exposure follow what type of dose-response relationship? | Nonlinear (sigmoid), threshold dose response |
What type of effects are described as: “those biologic somatic effects of ionizing radiation that exhibit a threshold dose below which the effect does not normally occur and above which the severity of the biologic damage increases”? | Nonstochastic (deterministic) effects |
What is the cellular component having the greatest radiobiological significance? |