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Radiation Biology 2

rad tech ARRT review

QuestionAnswer
What may effect an individuals radiosensitivity? Gender, Exposure rate, type of tissue exposed
Why are younger individuals more radiosensitive than older individuals? Younger people have more rapidly reproducing cells and may have affected cells reproduced before they are repaired
Define: Hypoxia Decreased oxygen
Define: Anoxia No oxygen
What is the relationship between oxygen and radiation? If a cell has more oxygen, it becomes more radiosensitive.
A hypoxic cell requires ____ technique when compared to an anoxic cell that would need _____ technique decreased; increased lower; higher
Define: Oxygen Enhancement Ratio (OER) The difference in sensitivity of radiation type based on level of oxygenation
Name some body tissues with HIGH radiosensitivity Blood cells, Bone Marrow, GI Tract
Define: Tissue Weighting Factor The radiosensitivity of different tissues based on susceptibility to damage
Low Tissue Weighting Factor means Lower Radiosensitivity
High Tissue Weighting Factor means HIGH radiosensitivity
What is the most likely neg effect of diagnostic imaging? Cancer
Name some Short-Term effects of radiation exposure Erythema, Epilation, Diminished Sperm Count, Temporary Infertility
Name some Long-Term effects of radiation exposure Cancer, Cataracts
Genetic effects damage what kind of cell? Germ Cells
Created by: mhaynes377
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