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Radiation Biology 2
rad tech ARRT review
Question | Answer |
---|---|
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 |