Search results
Results From The WOW.Com Content Network
Radiation can be divided into two categories: ionising radiation (IR) and non-ionising radiation (NIR). IR is more dangerous than NIR and a source of this radiation is X-rays used in medical procedures, for example in radiotherapy. [2] IR can have varying impacts which depend on many factors including age, irradiation field and treatment dose ...
Ionizing radiation in the form alpha, beta and gamma emissions are well known to adversely affect male and female fertility, as well as fetal development. [36] [37] Exposure to low doses of ionizing radiation can occur naturally in the environment or due to medical treatment or diagnosis, however, higher exposures may be associated with ...
It is difficult to establish risks associated with low dose radiation. [7] One reason why is that a long period of time occurs from exposure to radiation and the appearance of cancer. [7] Also, there is a natural incidence of cancer. [7] It is difficult to determine whether increases in cancer in a population are caused by low dose radiation. [7]
The model assumes a linear relationship between dose and health effects, even for very low doses where biological effects are more difficult to observe. The LNT model implies that all exposure to ionizing radiation is harmful, regardless of how low the dose is, and that the effect is cumulative over lifetime.
The ICLDRR assembles all published data and conducts analyses concerning the effects of low doses of radiation on humans and in the environment. ICLDRR's main focus is to contribute to clarifying whether low and very low doses of ionizing radiation increase the risk of cancer. To that end, the ICLDRR has assembled and analysed virtually all ...
Ionizing radiation has many industrial, military, and medical uses. Its usefulness must be balanced with its hazards, a compromise that has shifted over time. For example, at one time, assistants in shoe shops in the US used X-rays to check a child's shoe size, but this practice was halted when the risks of ionizing radiation were better ...
From Preston et al.: [1] Solid cancer dose-response function average over gender for attained age 70 after exposure at age 30. The solid straight-line is the linear slope estimate; the points are dose -category-specific ERR estimates; the dashed curve is a smoothed estimate that is derived from the points; and the dotted curves indicate upper ...
The possibility that low doses of radiation may have beneficial effects (a phenomenon often referred to as "hormesis") has been the subject of considerable debate. Evidence for hormetic effects was reviewed, with emphasis on material published since the 1990 BEIR V study on the health effects of exposure to low levels of ionizing radiation.