Sievert
Deterministic effects

The deterministic (acute tissue damage) effects that can lead to acute radiation syndrome only occur in the case of acute high doses (≳ 0.1 Gy) and high dose rates (≳ 0.1 Gy/h) and are conventionally not measured using the unit sievert, but use the unit gray (Gy).A model of deterministic risk would require different weighting factors (not yet established) than are used in the calculation of equivalent and effective dose.
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