This means that 1 Sv of alpha radiation will have the same biological effect as 1 Sv of beta radiation. The equivalent dose is expressed in a measure called the sievert (Sv). To obtain the equivalent dose, the absorbed dose is multiplied by a specified radiation weighting factor (wR) to reflect the relative biological effects of the different types of radiation. For example, 1 Gy of alpha radiation is more harmful to a given tissue than 1 Gy of beta radiation. The effect depends on the type of radiation (such as alpha, beta, gamma). However, equal absorbed doses will not necessarily produce equal biological effects. When radiation is absorbed in living matter, a biological effect may be observed. A dose of 1 gray is equivalent to 1 joule of energy deposited in a kilogram of a substance. The absorbed dose is measured in a unit called the gray (Gy). The energy absorbed in the human body from exposure to radiation is called an absorbed dose. Radiation dose quantities are described in three ways: absorbed, equivalent, and effective. The energy absorbed from exposure to radiation is called a dose. When ionizing radiation penetrates the human body or an object, it deposits energy.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |