Dose Genetically Significant Annual

The genetically significant annual dose (GAD) is an important radiobiological indicator used to assess the genetic consequences of human irradiation.

DGDH is defined as the population average value of the product of the individual gonadal dose per year and the expected number of children who will be conceived after irradiation.

The gonadal dose is the dose of radiation to the gonads (testes in men and ovaries in women). It determines the likelihood of genetic consequences of exposure in subsequent generations.

The number of children expected depends on gender, age and other demographic factors. It is calculated using fertility statistics for a given population.

Thus, DGDH quantitatively assesses the total genetic risk for the entire exposed population, taking into account the age and sex structure. This indicator is widely used in substantiating radiation standards and assessing medical exposure of the population.

The genetically significant annual dose (D95) is the total dose of ionizing radiation averaged over all healthy men and women over one calendar year, used to determine the risk of genetic consequences of radiation in future offspring. D95 is used as an indicator of the likely effect of radiation on the human reproductive system and is calculated for each generation, taking into account fertility losses and the sensitivity of mutations to radiation effects.