User contributions
12 August 2021
Pencil beam
Created page with "100px|frameless|right|link=ICRP Glossary A beam of radiant energy concentrated in an approximately conical or cylindrical portion of space of rela..."
Oxygen enhancement ratio
Created page with "100px|frameless|right|link=ICRP Glossary The ratio of the absorbed dose required to cause the same biological endpoint in hypoxic conditions as in..."
Organ at risk
Created page with "100px|frameless|right|link=ICRP Glossary An organ that may be damaged during exposure to radiation. OAR most frequently refers to healthy organs l..."
Molecular imaging
Created page with "100px|frameless|right|link=ICRP Glossary Molecular imaging is the visualization, characterization, and measurement of biological processes at the..."
Nuclear medicine
Created page with "100px|frameless|right|link=ICRP Glossary Nuclear medicine: Nuclear medicine uses radionuclides or tracers labelled with radionuclides in human and..."
Notification value
Created page with "100px|frameless|right|link=ICRP Glossary In CT A facility-defined value for volume CT dose index (CTDI<sub>vol</sub>) or dose–length product (..."
ICRP Glossary
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ICRP Glossary
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Noise
Created page with "100px|frameless|right|link=ICRP Glossary In imaging A fundamental statistical phenomenon that is present in all images. Noise tends to reduce the..."
Multitarget equation
Created page with "100px|frameless|right|link=ICRP Glossary Model that assumes the presence of a number of critical targets in a cell, all of which require inactivat..."
Multifactorial diseases
Created page with "100px|frameless|right|link=ICRP Glossary Diseases that are attributable to multiple genetic and environmental factors. ((ICRP Publication 103..."
Multi-detector computed tomography
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Multi-detector computed tomography
Created page with "100px|frameless|right|link=ICRP Glossary MDCT systems are CT scanners with a detector array consisting of more than a single row of detectors. The..."
Mean glandular dose
Created page with "100px|frameless|right|link=ICRP Glossary In mammography D<sub>G</sub> is the mean absorbed dose in the glandular tissue of the breast. Glandular t..."
DRL value
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National DRL
Created page with "100px|frameless|right|link=ICRP Glossary DRL value set in a country based on data from a representative sample of healthcare facilities in that co..."
Local DRL
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Local DRL
Created page with "100px|frameless|right|link=ICRP Glossary A DRL for an x-ray procedure set in healthcare facilities within part of a country for a defined clinica..."
Intensity-modulated radiotherapy
Created page with "100px|frameless|right|link=ICRP Glossary Advanced mode of high-precision radiotherapy that uses computer-controlled linear accelerators to deliver..."
Hyperfractionation
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Accelerated fractionation
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Hyperfractionation
Created page with "100px|frameless|right|link=ICRP Glossary Significant reduction in dose per fraction below a conventional level of 1.8–2.0 Gy to give a greater t..."
Hounsfield unit
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Hounsfield unit
Created page with "100px|frameless|right|link=ICRP Glossary Number used to represent the mean x-ray attenuation associated with each elemental area of the CT image...."
Growth factor
Created page with "100px|frameless|right|link=ICRP Glossary An organic molecule that stimulates cell proliferation when it binds to its cellsurface receptor. Often s..."
ICRP Glossary
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Graft vs host disease
Created page with "100px|frameless|right|link=ICRP Glossary In transplants, reaction by immunologically competent cells of the donor against the antigens present on..."
GATA binding protein 2
Created page with "100px|frameless|right|link=ICRP Glossary Master regulatory gene encoding for zinc finger DNA binding domain transcription factors/regulatory gene/..."
Gastroschisis
Created page with "100px|frameless|right|link=ICRP Glossary A congenital defect characterised by a defect in the anterior abdominal wall through which the abdominal..."
Gastrulation
Created page with "100px|frameless|right|link=ICRP Glossary Early phase in the embryonic development of most animals, during which the single-layered blastula is re-..."
Functional subunits
Created page with "100px|frameless|right|link=ICRP Glossary Subunit of an organ (or tissue) performing a certain function for the organ. e.g., nephrons in kidney, al..."
Fractionation and dose delivery patterns
Created page with "100px|frameless|right|link=ICRP Glossary The dose per fraction of radiation is the total dose divided into a particular number of fractions. A ver..."
Fluoroscopically or computed tomography guided interventions
Created page with "100px|frameless|right|link=ICRP Glossary Procedures comprising image guided therapeutic or diagnostic interventions by percutaneous or other acces..."
Exogenous excretion
Created page with "100px|frameless|right|link=ICRP Glossary Term used to specify the (faecal) excretion of material that passes through the alimentary tract without..."
DRL quantity
Created page with "100px|frameless|right|link=ICRP Glossary A commonly and easily measured or determined radiation metric (e.g. K<sub>a,e</sub>, K<sub>a,i</sub>, CTD..."
DRL value
Created page with "100px|frameless|right|link=ICRP Glossary An arbitrary notional value of a DRL quantity usually set at the 75th percentile of the distribution..."
DRL process
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DRL process
Created page with "100px|frameless|right|link=ICRP Glossary The cyclical process of establishing DRL values using them as a tool for optimisation and subsequently de..."
Dose-length product
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Dose-length product
Created page with "100px|frameless|right|link=ICRP Glossary A parameter used as a surrogate measure for patient dose in a computed tomography scan of length L. By co..."
Diagnostic reference level
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Diagnostic reference level
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Diagnostic reference level
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Diagnostic reference level
Created page with "100px|frameless|right|link=ICRP Glossary A diagnostic reference level is a form of investigation level used as a tool to aid in optimisation of p..."
Detector quantum efficiency
Created page with "100px|frameless|right|link=ICRP Glossary A measure of the combined effects of the signal (related to image contrast) and noise performance of an i..."
Exposure index
Created page with "100px|frameless|right|link=ICRP Glossary Indicator displayed on digital radiography equipment (computed radiography or digital radiography) relate..."
Dental and maxillofacial imaging
Created page with "100px|frameless|right|link=ICRP Glossary Dental and maxillofacial imaging refers to imaging of high-contrast structures related to the teeth and j..."
ICRP Glossary
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ICRP Glossary
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Cone beam computed tomography
Created page with "100px|frameless|right|link=ICRP Glossary A form of x-ray computed tomography in which the x rays in the form of a divergent cone or pyramid expose..."