Radiobiology and the Classification of Biological Effects

Deterministic Effects

  • Deterministic Effects 1
  • Deterministic Effects 2
  • Deterministic Effects 3
  • Deterministic Effects 4

Effects at Tissue Level

For deterministic effects we witness a threshold dose and severity depends on dose received.

The cells in most tissues and organs of the body are continuously being replaced. However, the balance between loss and replacement rates may be affected by many factors including exposure to radiation. The result of a net loss of cells may be the failure of function of the tissue or organ. Gross reductions in the number of healthy cells in vital tissues may lead to death.

For each tissue type there is an absorbed dose threshold level below which the probability of harm is very low. Above this threshold, pathological conditions will be observed in nearly all the irradiated population and their severity will be dose-dependent.