User contributions
4 June 2019
ICRP
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ICRP
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ICRP
Created page with "{{#externalredirect: http://www.icrp.org/}}"
X ray
Created page with "Electromagnetic radiation emitted from outside the nucleus of an atom due to the energy loss of electrons. ''ICRP Glossary entry - June 2019''"
ICRP Glossary
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ICRP Glossary
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ICRP Glossary
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Tissue equivalent material
Created page with "Material presenting, when irradiated, interaction properties similar to those of soft tissue. ''ICRP Glossary entry - June 2019''"
Spontaneous fission
Created page with "A decay mechanism resulting in splitting of the nucleus into lighter nuclei, referred to as ‘fission fragments’, with the emission of neutrons. (Adapted from ICRP Public..."
Solar cosmic radiation
Created page with "Radiation emitted from the Sun. This radiation includes continuously emitted electrons and protons (solar wind), and high-energy particles (mainly electrons and protons) emitt..."
Senescence
Created page with "A permanent arrest of cell division associated with differentiation, ageing, or cellular damage. (ICRP Publicatio 118, 2012) ''ICRP Glossary entry - June 2019''"
Rigidity
Created page with "The magnetic rigidity of an ion given by its momentum (often given in units of GeV c-1) divided by its charge. Parameter used for characterising the movement of a high-energy..."
ICRP Glossary
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ICRP Glossary
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Radioresponsiveness
Created page with "Rate of response of a tissue to irradiation. In context of radiotherapy, it means the degree of reduction of tumor volume or tumor cell survival after irradiation. It depends..."
Radionuclides of natural origin
Created page with "Radionuclides that occur naturally on Earth. They include <sup>3</sup>H, <sup>7</sup>Be, <sup>14</sup>C, <sup>40</sup>K and radionuclides in the decay chains of the primordial..."
Radioactivity
Created page with "The property of an unstable atomic nucleus losing energy by emitting radiation (radioactive decay). Radioactivity also refers to the expectation value of the number of radioac..."
Radioactive substance
Created page with "Radioactive substance is a term to represent a qualitative property regardless of the level of activity. ''ICRP Glossary entry - June 2019''"
Radioactive source
Created page with "A term specifically to indicate a source containing radioactive material. (ICRP Publication 118, 2012) ''ICRP Glossary entry - June 2019''"
Programmed cell death
Created page with "Cell death that occurs as the result of an active intracellular process of self-destruction. Examples include apoptosis, autophagy, senescence, and, in some cases, even necros..."
ICRP Glossary
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ICRP Glossary
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ICRP Glossary
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Mendelian diseases
Created page with "Heritable diseases attributable to mutations in one or both copies (alleles) of a single gene. (Adapted from ICRP Publication 103, 2007) ''ICRP Glossary entry - Jun..."
Latent time/period or latency interval
Created page with "Time between (onset of) irradiation and clinical manifestation of radiation effects. (ICRP Publication 118, 2012) ''ICRP Glossary entry - June 2019''"
ICRP Glossary
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ICRP Glossary
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Isotropic geometry
Created page with "A radiation field in which the mono-energetic particle fluence per unit of solid angle is independent of direction. (ICRP Publication 119, 2012, Para 12) ''ICRP Glossa..."
Isomers
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Isomers
Created page with "Nuclei of the same atomic number Z and mass number A, but with a different energy state and different physical half-life. Isomers of energy above the ground state are identifi..."
ICRP Glossary
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Interphase death
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Interphase death
Created page with "Death of an irradiated cell before it reaches mitosis. Sometimes the term is wrongly used as a synonym for ‘apoptosis’, but interphase death can occur through mechanisms o..."
Internal conversion electron
Created page with "An internal conversion electron is an orbital electron ejected from the atom as a result of the energy difference between states of the nucleus being transferred directly to a..."
Inner bremsstrahlung
Created page with "Inner bremsstrahlung is a continuous electromagnetic radiation produced by the sudden change of nuclear charge which occurs in beta-plus, beta-minus, or electron-capture decay..."
Hypoplasia
Created page with "Reduction in cell numbers in a tissue, for example, due to radiation-induced impairment of proliferation in early-responding tissues. (ICRP Publication 118, 2012) ''ICR..."
Half-life, physical
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Half-life, physical
Created page with "The time interval required for an amount of a certain radioactive nuclide to decay to half of its original value. (Adapted from ICRP Publication 119, 2012) ''ICRP Glo..."
ICRP Glossary
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Gamma ray
Created page with "Gamma-rays are electromagnetic radiations (photons) emitted by the nucleus in transition from a high energy state to a lower energy state. (ICRP Publication 107, 2007) '..."
Galactic cosmic radiation
Created page with "Charged particle radiation that enters the heliosphere continuously from outer space from all directions. The radiation contains electrons (approximately 2%) and a broad range..."
Forbiddenness
Created page with "Beta transitions are classified as allowed transition or forbidden transition based on the spin and parity of the nuclear states involved in the transition. Forbiddenness indi..."
ICRP Glossary
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Field-size effect (Volume effect)
Created page with "The dependence of normal tissue damage on the size of the irradiated area (particularly in skin); in modern literature, typically referred to as the ‘volume effect’. Large..."
ICRP Glossary
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ICRP Glossary
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Exponential survival curve
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Exponential survival curve
Created page with "A survival curve without a threshold or shoulder region which is a straight line when the logarithm of survival fraction is plotted against the dose on a linear scale. (Adapte..."
Electron-capture decay
Created page with "In electron-capture decay, the nucleus of an atom of atomic number Z and mass number A captures an atomic electron and emits a neutrino (ν) to form an atom of atomic number Z..."
Effective half-life
Created page with "Time taken for the activity of a radionuclide in a specified place to halve its activity as a result of all relevant processes. Effective half-life Teff may be determined by:..."