A radiation dose to one part of the body does not have the same potential health effect as a dose to another part. The EDE is used to put different types of radiation doses on an equivalent basis in terms of their potential for causing damage.
An equivalent dose to the whole body, calculated by multiplying the dose to a particular organ (or collection of organs) by a factor that allows a rough representation of equivalent whole body dose and hence the risk of radiogenic cancer.
A quantity used to estimate the biological effect of ionizing radiation. It is the sum over all body tissues of the product of absorbed dose, the quality factor (to account for the different penetrating ability of the various radiations), and the tissue weighting factor (to account for the different radiosensitivity of the various tissues of the body).
The sum over specified organs or tissues of the average dose equivalent in each tissue modified by the tissue weighting factor, as defined in ICRP (1977). Now superseded by effective dose.
the sum of the products of the dose equivalent to the organ or tissue and the weighting factors applicable to each of the body organs or tissues that are irradiated.
The dose equivalent to organs and tissues of reference that will be received from an intake of radioactive material by an individual following the intake. Individual internal organ doses and the external dose are summed to determine the whole body dose.
The summation of the products of the dose equivalent received by specified tissues of the body (HT) and the appropriate weighting factor (w )--that is, HE = w . It includes the dose from radiation sources internal and/or external to the body. For purposes of compliance with this part, deep dose equivalent to the whole body may be used as effective dose equivalent for external exposures. The effective dose equivalent is expressed in units of rem (or sievert).
Risk-weighted sum of products of dose equivalents to major body organs or tissues that are irradiated.
Measurement of radioactivity that expresses the variety of dose equivalents for different organs of the body as a single number. It is commonly referred to as a ?dose?, and is measured in sieverts. It provides an indication of the risk to health from any given exposure to radiation. Definition source: United Nations. Glossary of environment statistics. http://esa.un.org/unsd/envmnt/default.asp