Assessment of Exposure Doses and Decontamination
ＱDoes the radiation dose of a person depend on age, gender, race, and physique?
ＡGenerally, the smaller the body size is, the larger the external radiation dose becomes, because the radiation-shielding effect of the body becomes small. The extent of this effect has been clarified by simulation.
Simulation results for radiation source deposited the ground.
- Effective dose is originally defined as averaged radiation dose for adult westerners (men and women).
- The relation between effective dose and size of body has been investigated by applying the above definition to the other types of people.
- The most important factor that affects the radiation dose is the body size depending on the age. Therefore, age-dependent dose conversion coefficients have been prepared.
- Data measured with a personal dosimeter reflect difference in radiation doses depending of the body size.
- It was confirmed that difference in radiation doses among gender, race, and body size is not so large.
- It is possible to evaluate radiation dose depending on the age.
- In what ways does exposure to radiation occur the environment? What kinds of radiation exposures are important in Fukushima?
- Why are radiation doses measured with personal dosimeters different from those estimated using air dose rates?
- What kind of unit is used for the evaluation of radiation dose? What is the relationship between the unit and air dose rates?