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Radiation Dosimetry: Biological Effects of Radiation - Deterministic vs Stochastic
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Avg score: 57% • Most missed: “Stochastic effects are best described as:”

Deterministic (tissue reaction) effects have a threshold dose and severity increases with dose (e.g., skin erythema, cataracts). Stochastic effects have no threshold; probability increases with dose but severity does not (e.g., cancer, genetic effects).

Worked example:
A worker receives 3 Gy localized skin dose → risk of deterministic skin injury.
A worker receives 10 mSv whole-body effective dose → increased stochastic cancer risk probability, but not guaranteed.
 

Radiation Dosimetry: Biological Effects of Radiation - Deterministic vs Stochastic
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8 Questions

1. Doubling dose in stochastic effects MOST likely:
2. Acute Radiation Syndrome is:
3. Which is MOST likely deterministic?
4. Stochastic effects are best described as:
5. Effective dose is primarily used for evaluating:
6. Which effect has a dose threshold?
7. Cataracts are generally considered:
8. Which dose metric is MOST relevant for stochastic risk?

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