I'm looking for a word that compliments stochastic (randomly determined) in a medical context, specifically in describing when radiation effects occur. 'Acute' seems to be the generally used term for effects that vary directly with exposure, but I feel this is being muddled with the term used to describe what brings on such effects, "acute exposure," while not commenting on the nature of the effects themselves, as stochastic does. I'm certain that another word is used that speaks more to the nature of radiation effects that increase in severity with increased exposure.
Stochastic effects include cancer and genetic disorders.
Acute effects include skin lesions and vomiting at moderate levels, and multiple organ failure at very high doses.