User contributions
4 June 2019
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:..."
Effective charge number
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Effective charge number
Created page with "The charge number Z of a nucleus reduced by a factor depending on the relative velocity (velocity of the nucleus relative to the velocity of light) which takes account of the..."
Early normal tissue responses
Created page with "Radiation-induced normal tissue damage that is expressed weeks to a few months after exposure (by definition, within approximately 90 days after onset of exposure, e.g. in rad..."
ICRP Glossary
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ICRP Glossary
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Decay constant
Created page with "Probability of a given nucleus in a particular energy state undergoing a spontaneous nuclear transition from that energy state in a unit time interval. The SI unit of decay co..."
Curie
Created page with "Non-SI unit of radioactivity, equal to 3.7x1010 Bq. The SI unit is the becquerel (Bq). ''ICRP Glossary entry - June 2019''"
Coster-Kronig transition
Created page with "CK transition is an Auger transition in which the atomic shell vacancy is filled by an electron from a higher subshell of the same shell. (ICRP Publication 107, 2007) ''[..."
Constancy test
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Constancy test
Created page with "A series of tests performed in specified time intervals to ensure that the functional performance of equipment meets established criteria, or to enable the early recognition o..."
Consequential late effects
Created page with "In radiation oncology, late normal tissue (in contrast to “tumor tissue”) complications induced by a high dose radiation exposure, which occur as a consequence of a nonhea..."
Colony
Created page with "The clone of cells derived from a single clonogenic cell. (Adapted from ICRP Publication 118, 2012) ''ICRP Glossary entry - June 2019''"
Cell death
Created page with "In the context of radiobiology, cell death is equated with any process that leads to the permanent loss of clonogenic capacity, often termed ‘loss of reproductive integrity..."
Bystander effect
Created page with "A response in unirradiated cells that is triggered by signals received from irradiated neighbouring cells. (ICRP Publication 103, 2007) ''ICRP Glossary entry - June..."
Branching fraction
Created page with "Fraction of the nuclear transformations of a radionuclide that forms a particular daughter nuclide. (Adapted from ICRP Publication 107, 2007) ''ICRP Glossary entry -..."
Beta-plus decay
Created page with "In beta-plus decay, the nucleus of an atom of atomic number Z and mass number A emits a positively-charged electron (positron) and a neutrino to form an atom of atomic number..."
Beta-minus decay
Created page with "In beta-minus decay, the nucleus of an atom of atomic number Z and mass number A emits a negatively-charged electron and an antineutrino to form an atom of atomic number Z+1 a..."
Auger transition
Created page with "The filling of a vacancy in an inner electron shell of an atom, e.g. as created in electron capture, is accompanied by the emission of an electron from the outer shell, an Aug..."
Annihilation photons
Created page with "The electromagnetic radiation (photons) emitted as a positron–electron pair undergoes annihilation. Annihilation generally occurs after the positron has lost its initial kin..."
Information for patients, family members, carers and the public (old)
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Information for patients, family members, carers and the public (old)
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Application of ionising radiation in healthcare (old)
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+12
Information for healthcare providers (old)
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Information for patients, family members, carers and the public (old)
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+12
Information for patients, family members, carers and the public (old)
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-11
Information for healthcare providers (old)
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Information for healthcare providers (old)
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Information for patients, family members, carers and the public (old)
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Information for patients, family members, carers and the public (old)
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File:LINAC dog.jpg
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