non-ionizing radiation

Examples of non-ionizing radiation in the following topics:

• Increased Cancer Risk from Radiation

  • Up to 10 percent of invasive cancers are related to radiation exposure, including both ionizing radiation and non-ionizing radiation.
  • Up to 10 percent of invasive cancers are related to radiation exposure, including both ionizing radiation and non-ionizing radiation.
  • Additionally, the vast majority of non-invasive cancers are non-melanoma skin cancers caused by non-ionizing ultraviolet radiation.
  • Exposure to ionizing radiation is known to increase the future incidence of cancer, particularly leukemia.
  • The most widely accepted model posits that the incidence of cancer due to ionizing radiation increases linearly with effective radiation dose at a rate of 5.5 percent per sievert.

• Radiation

  • Ionizing radiation could be a lethal health hazard if used inappropriately.
  • The gamma radiation is emitted from a radioisotope (usually cobalt-60 or cesium-137).
  • An incident in Decatur, Georgia where water soluble cesium-137 leaked into the source storage pool requiring NRC intervention has led to near elimination of this radioisotope; it has been replaced by the more costly, non-water soluble cobalt-60.
  • Facilities rely on substantial concrete shields to protect workers and the environment from radiation exposure.
  • High-energy X-rays are a form of ionizing energy allowing to irradiate large packages and pallet loads of medical devices.

• Ultraviolet Light

  • Most ultraviolet is classified as non-ionizing radiation.
  • However, the entire spectrum of ultraviolet radiation has some of the biological features of ionizing radiation, in doing far more damage to many molecules in biological systems than is accounted for by simple heating effects (an example is sunburn).
  • These properties derive from the ultraviolet photon's power to alter chemical bonds in molecules, even without having enough energy to ionize atoms.
  • Consequently, 99% of the solar UV radiation reaching the Earth's surface is UV-A.
  • An overexposure to UVB radiation can cause sunburn and some forms of skin cancer .

• Measuring Radiation Exposure

  • Radiation dosimetry is the measurement and calculation of the absorbed dose from exposure to indirect and direct ionizing radiation.
  • Radiation dosimetry is the measurement and calculation of the absorbed dose in matter and tissue resulting from exposure to indirect and direct ionizing radiation.
  • It is a scientific subspecialty in the fields of health physics and medical physics that is focused on the calculation of internal and external doses from ionizing radiation.
  • Non-SI units are still prevalent as well, where dose is often reported in rads, and dose equivalent in rems.
  • There are several ways of measuring doses from ionizing radiation, including personal dosimeters and ionization chambers.

• Dosimetry

  • Radiation dosimetry is the measurement and calculation of the absorbed dose resulting from the exposure to ionizing radiation.
  • Radiation dosimetry is the measurement and calculation of the absorbed dose in matter and tissue resulting from the exposure to indirect and direct ionizing radiation.
  • There are several ways of measuring the dose of ionizing radiation.
  • Outside the United States, the most widely used type of personal dosimeter is the film badge dosimeter, which uses photographic emulsions that are sensitive to ionizing radiation.
  • Non-SI units are still prevalent as well: absorbed dose is often reported in rads and dose equivalent in rems.

• Acute Radiation Damage

  • Acute radiation syndrome or damage describes health effects present within 24 hours of exposure to high amounts of ionizing radiation.
  • Acute radiation syndrome, also known as radiation poisoning, radiation sickness, or radiation toxicity, is a constellation of health effects that are present within 24 hours of exposure to high amounts of ionizing radiation, which can last for several months.
  • Radiation sickness is caused by exposure to a large dose of ionizing radiation over a short period of time, typically greater than about 0.1 Gy/h.
  • The onset and type of symptoms depends on the radiation exposure.
  • These diseases are sometimes referred to as radiation sickness, but they are never included in the term acute radiation syndrome.

• Genetic Defects from Radiation

  • Ionizing radiation from fallout can cause genetic effects, birth defects, cancer, cataracts, and other organ and tissue defects.
  • Intermediate stage: from 10–12 weeks; deaths in this period are from ionizing radiation in the median lethal range.
  • Ionizing radiation from fallout can cause genetic effects, birth defects, cancer, cataracts, and other organ and tissue defects.
  • By directly or indirectly ionizing, radiation can affect a cell's ability to conduct repair and reproduction.
  • Recognize the name of the genetic defect that has been shown to be caused by acute radiation exposure during pregnancy

• Therapeutic Uses of Radiation

  • Radiation therapy uses ionizing radiation to treat conditions such as hyperthyroidism, cancer, and blood disorders.
  • Radiation therapy involves the application of ionizing radiation to treat conditions such as hyperthyroidism, thyroid cancer, and blood disorders.
  • Ionizing radiation works by damaging the DNA of exposed tissue, leading to cellular death.
  • Radiation therapy is in itself painless.
  • Radiation therapy of the pelvis.

• Radiation Detection

  • A radiation detector is a device used to detect, track, or identify high-energy particles.
  • A radiation detector is a device used to detect, track, or identify high-energy particles, such as those produced by nuclear decay, cosmic radiation, and reactions in a particle accelerator.
  • Different types of radiation detectors exist ; gaseous ionization detectors, semiconductor detectors, and scintillation detectors are the most common.
  • Gaseous ionization detectors use the ionizing effect of radiation upon gas-filled sensors.
  • A scintillation detector is created by coupling a scintillator -- a material that exhibits luminescence when excited by ionizing radiation -- to an electronic light sensor, such as a photomultiplier tube (PMT) or a photodiode.

• Medical Imaging and Diagnostics

  • Radiation therapy uses ionizing radiation to treat conditions such as hyperthyroidism, cancer, and blood disorders.
  • Radiation therapy involves the application of ionizing radiation to treat conditions such as hyperthyroidism, thyroid cancer, and blood disorders.
  • Ionizing radiation works by damaging the DNA of exposed tissue, leading to cellular death.
  • Radiation therapy is in itself painless.
  • Radiation therapy of the pelvis.