nonionizing radiation


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nonionizing radiation

[-ī′ənī′zing]
Etymology: L, non + Gk, ion, going, izein, to cause
radiation for which the mechanism of action in tissue does not directly ionize atomic or molecular systems through a single interaction.

nonionizing radiation

Abbreviation: NIR
Electromagnetic radiation that does not readily ionize atoms such as that in visible light, ultraviolet light, infrared light, microwaves, ultrasound, and radiofrequency emissions.
See also: radiation
References in periodicals archive ?
This report addresses systems using ionizing radiation, but also describes briefly some systems under consideration that utilize nonionizing radiation sources.
In all, while both ionizing and nonionizing radiation were shown to impact human reproductive capacity and produce birth defects, with few exceptions, the data were derived from studies involving cases of acute exposure and high doses.
Slightly higher energies of nonionizing radiation have been used to change our world.
He describes how the Reagan White House tried to suppress the EPA's initial findings about the harmful effects of nonionizing radiation.
Theoretically, they're considered sources of nonionizing radiation, just like any FM radio, or microwave oven we use in the house.
identifying and removing both ionizing and nonionizing radiation exposure where feasible.
2007) did not correctly address nonionizing radiation and, in particular, power frequency magnetic fields as a possible risk factor for childhood leukemia.
Because the ARRT's mission is to recognize individuals "qualified" in the use of ionizing and nonionizing radiation for medical imaging and radiation therapy, it falls upon the ARRT to define what "qualified" means.
With respect to the electromagnetic field (EMF) exposure or the socalled radiation, we wish to clarify that the EMF produced by the transmission lines with the required distances is well below the recommended longterm exposure levels prescribed by the International Commission on Nonionizing Radiation Protection and adopted by the Department of Health," he said in an Oct.
The environmental risk factors discussed include ionizing radiation, nonionizing radiation, hydrocarbons, pesticides, alcohol use, cigarette smoking, and illicit drug use.
Ionizing radiation is used in radiography, fluoroscopy, mammography, CT, nuclear medicine and radiation therapy, whereas nonionizing radiation is used in sonography and MR.
Since that time, industry-backed research has disputed the idea that human-produced nonionizing radiation can cause such symptoms.