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ICRP Glossary

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[[File:Glossary Header-left2.png|800px|frameless|none|link=ICRP Glossary]]
<big><center> The ICRP Glossary collects ICRP’s definitive explanations of terms for current use. Some entries include historical descriptions to help readers better understand the term in a particular context. It is a living document, updated regularly.  Many ICRP publications feature their own glossaries including, for example, highly specialized terms relevant to that specific publication or helpful for a reader to have close at hand, or when introducing new terms to be added to the ICRP Glossary. Although the ICRP Glossary is not a dictionary, terms already well covered in the Oxford English Dictionary are not included here unless further explanation is needed to understand the way in which these terms are used in [[ICRP publications]]. ----
{| class="wikitable"
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| [[#09|0-9]] || [[#A|A]] || [[#B|B]] || [[#C|C]]|| [[#D|D]] || [[#E|E]] || [[#F|F]] || [[#G|G]] || [[#H|H]] || [[#I|I]] || [[#J|J]] || [[#K|K]] || [[#L|L]] || [[#M|M]] ||[[#N|N]] || [[#O|O]] || [[#P|P]] || [[#Q|Q]] || [[#R|R]] || [[#S|S]] || [[#T|T]] || [[#U|U]] || [[#V|V]] || [[#W|W]] || [[#X|X]] || [[#Y|Y]] || [[#Z|Z]] || [[#ZZ|...]]
|}
</center></big>
<div style="column-count:2;-moz-column-count:2;-webkit-column-count:2">
 
=== <big><span id="09">0-9</span></big> ===
 
*4DCT (see [[Time-resolved computed tomography]])
=== <big><span id="A">A</span></big> ===
*[[Absolute risk]] *[[Absorbed dose]], D *[[Absorbed fraction]] * [[Absorption Type]] *[[Accelerated fractionation]]
* [[Accelerated fractionationAcceptance test]]
* [[Acceptance testAccess control]]
* [[Access ControlAccountability]]
* [[AccountabilityAccreditation]]
*[[Action Level]]
 
*[[Activation]]
 
*[[Active detection system]]
*[[Active (red) bone marrow]]
*[[Activity]] *[[Activity median thermodynamic diameter ]] *[[Acute exposure]]
*Acute radiation sickness (see [[Acute radiation syndrome]]) *[[Acute Exposureradiation syndrome]] *[[Additional dose]] *[[Adaptive response]] *[[Additive risk projection model]] *[[Adenoma]]
*[[Adventitious]]
*[[Adventitious Sourcesource]]
*[[Aerodynamic diameter ]]
*[[Air-kerma rate constant ]] *[[Air kerma at the patient entrance reference point]]
*[[Air-kerma, entrance surface]]
*[[Air-kerma, product]]
 
*[[ALARA]]
 
*ALI (see [[Annual limit on intake]])
*[[Alimentary tract]]
*[[Alimentary tract transfer factor]]
 
*[[Allometry]]
*[[Alpha decay]]
*[[α/β ratioAlveolar-interstitial region]] *AMAD (see [[Activity median aerodynamic diameter]])
*[[Alveolar-interstitial regionAmbient dose equivalent]], H*(10) *[[AML/eto]]
*[[Angiogenesis]]
*[[Annual dose]]
 
*[[Annual intake]]
 
*[[Annual limit on intake]]
 
*[[Apoptosis]]
*[[Area monitoring]]
 
*ARS (see [[Acute radiation syndrome]])
 
*[[Attributable risk]]
*[[Auger transition]]
*[[Authorised Dischargedischarge]]
*[[Authorization]]
*[[Autoimmune disease]]
 
*[[Automatic exposure control]]
*[[Autonomy]]
 
*[[Averted dose]]
*[[Background dose (rate)]]
*[[Backscatter Factor detection system]] *[[Backscatter factor]] *[[Basal cell]] *[[Baseline disease rates]] *BAT (see [[Best available techniques]]) *Bcr/abl (see [[Breakpoint cluster region/abelson]])
*[[Beneficence]]
*[[Benthic]]
*[[Best Available Techniquesavailable techniques]]
*[[Beta-minus decay]]
*[[Bioassay]]
 
*[[Biological half-life]]
 
*[[Biomarker]]
*[[Biomedical research volunteer]]
*[[Bradycardia]]
 
*[[Brachytherapy]]
*[[Branching fraction]]
 
*[[Bragg peak]]
 
*[[Breakpoint cluster region/abelson]]
 
*[[Broad beam therapy irradiation technique]]
*[[Bronchial region]]
 
*[[Bronchiolar region]]
*[[Bystander effect]]
=== <big><span id="C">C</span></big> ===
*CACA (see [[CalibrationCobblestone area forming cell assay]]) *CAFC (see [[Cobblestone area forming cell assay]]) *CBCT (see [[Cone beam computed tomography]])
*[[Cardiac arrhythmias]]
*[[Cardioverter-defibrillator]]
*[[Categories of exposureCarers and comforters]]
*[[Category of exposed individualCase–control study]]
*[[Cell death]]
 
*[[Charged-particle equilibrium]]
*[[Chronic exposure]]
*[[Class SR-2 gases]]
 
*[[Clearance]]
*[[Clearance level]]
 
*[[Clinical audit]]
*[[Clonogenic cells]]
*[[Clonogenic survival]]
 
*[[Clonogenic surviving fraction]]
 
*Cobblestone area cell assay (see [[Cobblestone area forming cell assay]])
 
*[[Cobblestone area forming cell assay]]
 
*[[Collective dose]]
*[[Co-expertise]]
 
*[[Cohort study]]
 
*[[Collective dose]]
 
*[[Collective effective dose]]
 
*[[Collimation]]
*[[Colony]]
 
*[[Commissioning]]
*[[Committed effective dose]]
*[[Committed equivalent dose]]
*[[CommodityCompartment]] *[[Compartment (environmental)]]
*[[Complex tissues]]
*[[Computed tomography dose index]]
*[[Conditional renewing (complex or flexible) tissuesConcentration ratio]]
*[[Confidence limits]] *[[ConfinementCone beam computed tomography]]
*[[Connective tissue]]
*[[Constancy test]]
*[[Consumer productContainment]]
*[[Contamination]]
*[[Control measuresCoronary heart disease]]
*[[Coronary heart diseaseCosmic radiation]]
*[[Cost-benefit analysis]]
*[[Coster-Kronig transition]]
 
*CR (see [[Concentration ratio]])
 
*[[Cross section]]
 
*Cumulative air kerma (see [[Air kerma at the patient entrance reference point]])
 
*[[Cumulative dose]]
*[[Curie]]
=== <big><span id="D">D</span></big> ===
 
*DAC (see [[Derived air concentration]])
 
*DBT (see [[Digital breast tomosynthesis]])
 
*DCRL (see [[Derived consideration reference level]])
 
*DD (see [[Doubling dose]])
 
*DDI, detector dose indicator (see [[Exposure index]])
 
*DIL (see [[Derived investigation level]])
 
*DDREF (see [[Dose and dose-rate effectiveness factor]])
*[[Decay constant]]
*[[Decontamination factor]]
*[[Defence-in-depthDental and maxillofacial imaging]]
*[[Deontological Ethics]]
 
*[[Deposition]] (inhalation)
 
*[[Derived air concentration]]
 
*[[Derived consideration reference level]]
 
*[[Derived investigation level]]
 
*[[Derived limit]]
 
*[[Derived reference level]]
 
*[[Designated area]]
 
*Detector dose indicator (see [[Exposure index]])
 
*[[Detector quantum efficiency]]
 
*[[Deterministic effect]]
 
*[[Detriment]]
 
*[[Detriment-adjusted risk]]
 
*[[Diagnostic reference level]]
*[[Diastasis]]
 
*[[Dicentric chromosome]]
*[[Dichotomous]]
*[[Differentiation]]
 
*[[Digital breast tomosynthesis]]
*[[Dignity]]
*[[Direct bioassay]]
 
*[[Directional dose equivalent]] H’(d,Ω)
*[[Disposal]]
*[[Disposal Facilityfacility]] *[[Distribution coefficient]] (''K<sub>d</sub>'') *DLP (see [[Dose-length product]])
*[[DNA damage signalling]]
 
*[[Dose]] (of ionising radiation)
 
*[[Dose and dose-rate effectiveness factor]]
 
*[[Dose coefficient]]
 
*[[Dose commitment]]
*[[Dose constraint]]
 
*[[Dose conversion coefficient]]
 
*[[Dose conversion convention]]
 
*[[Dose conversion factor]]
*[[Dose criteria]]
*[[Dose equivalent ]] in an organ or tissue]]
*[[Dose limit]]
*[[Dose Modifying Factormodifying factor]] *[[Dose of record (E)]] *[[Dose of record Hp (10)]] *[[Dose per content function]]
*[[Dose per unit intake coefficient]]
*[[Dose rate effectiveness factor]]
*[[Dosemeter/dosimeterDose-length product]] *[[Dose-threshold hypothesis]]
*[[Dose-rate effect]]
*[[Dose–response Dose-response function ]]
*[[Dose-threshold]]
*[[DosimetristsDoubling dose]]
*DQE (see [[DysrhythmiaDetector quantum efficiency]]) *DRL (see [[Diagnostic reference level]]) *[[DRL process]] *[[DRL quantity]] *[[DRL value]] *[[DS02]] *[[DS86]]
=== <big><span id="E">E</span></big> ===
 
*EAR (see [[Excess absolute risk]])
*[[Early normal tissue responses]]
*[[Effect Dose 50 ]]
 
*[[Effect modifier]]
*[[Effective charge number]]
 
*[[Effective dose]], E
*[[Effective dose equivalent]]
*[[Effective half-life]]
 
*EI (see [[Exposure index]])
*[[Electron-capture decay]]
*[[Electrophysiology]]
 
*[[Elemental dose]]
 
*ELR (i.e. Excess Lifetime Risk, see [[Lifetime risk estimates]])
*[[Emergency]]
*[[Emergency procedures]]
*[[Emergency WorkerEmployer]]
*[[Endogeneous excretion]]
 
*Endosteal tissue (see [[Endosteum]])
 
*[[Endosteum]]
*[[Environmental exposure]]
*[[Environmental radiation protection]]
 
*[[Epigenetic effects]]
*[[Epithelium]]
 
*[[Equieffective dose]]
 
*[[Equilibrium equivalent concentration]]
 
*[[Equilibrium factor]]
*[[Equity]]
*[[Equivalent dose]]
 
*ERR (see [[Excess relative risk]])
*[[Erythropoietin]]
*[[Ethics]]
*[[Event tree analysisEvacuation]] *[[Excess absolute risk]]
*Excess lifetime risk (see [[Lifetime risk estimates]]) *[[Excess relative risk]] *[[Excretion rate(instantaneous)]] *[[Exclusion]]
*[[Exempt waste]]
*[[Existing exposure situation]]
 
*[[Exogenous excretion]]
 
*[[Expanded and aligned radiation field]]
 
*[[Expanded radiation field]]
*[[Exponential survival curve]]
 
*[[Exposed individuals]]
*[[Exposure, external or internal]]
*[[Exposure Pathway(in the context of inhalation)]] *[[Exposure index]] *[[Exposure pathway]]
*[[Exposure situation]]
*[[Fairness]]
 
*[[Fault tree analysis]]
*[[Field-size effect (Volume effect)]]
*[[Flexible tissues]]
 
*[[Fluence]], Φ
*[[Fluoroscopically guided interventions]]
 
*[[Fluoroscopically or computed tomography guided interventions]]
*[[Forbiddenness]]
 
*[[Fractional absorption in the gastrointestinal tract]], f<sub>1</sub>
*[[Fractionation]]
 
*[[Fractionation and dose delivery patterns]]
*[[Fractionation sensitivity]]
 
*[[Frequent flyer]]
 
*FSU (see [[Functional subunits]])
 
*[[Functional subunits]]
=== <big><span id="G">G</span></big> ===
*[[Gamma ray]]
*[[Gastrointestinalsyndrome]] *[[Gastrulation]]
*[[Gastrointestinal syndromeGastroschisis]] *[[GATA binding protein 2]] *GATA-2 (see [[GATA binding protein 2]]) *[[Genomic integrity]] *Geomagnetic cut-off rigidity (see [[Rigidity threshold]])
*[[Graded approach]]
 
*[[Graft vs host disease]]
*[[Granulocyte colony-stimulating factor]]
*[[Granulocyte-macrophage colony-stimulating factor]]
 
*[[Gray]] (Gy)
 
*[[Ground-level enhancement]]
 
*[[Growth factor]]
*[[Growth fraction]]
*[[Half-life, physical]]
 
*HATM (see [[Human Alimentary Tract Model]])
*[[Hazard]]
*[[Heliosphere]]
 
*[[Hereditary effect]]
*[[Hierarchical tissues]]
*[[High level waste]]
 
*[[High linear energy transfer radiation]]
 
*[[Homologous recombination]]
*[[Hormones]]
*[[Hounsfield unit]] *HRTM (see [[Human Respiratory Tract Model]]) *[[Human Alimentary Tract Model]] *[[Human Respiratory Tract Model ]]
*[[Hyperbaric oxygen]]
 
*[[Hyperfractionation]]
*[[Hypertrophic cardiomyopathy]]
=== <big><span id="I">I</span></big> ===
 
*[[ICRU 4-element tissue]]
 
*[[ICRU sphere]]
*[[Immune system]]
*IMRT (see [[Intensity-modulated radiotherapy]]) *[[In vivo measurementradiobioassay]] *[[Incidence]] *Incidence rate (see [[Incidence]])
*[[Incident]]
*[[Individual decontamination]]
*[[Individual dose restrictionmonitoring]]
*[[Individual monitoring-related]]
*[[Informed ConsentInduced genomic instability]]
*[[Ingestion exposure planning zoneInformed consent]]
*[[Inhalability]]
*[[Institutional control]]
 
*[[Intervention]]
 
*[[Intensity-modulated radiotherapy]]
 
*[[Intake]]
*[[Intermediate level waste]]
*[[Iso-effect plots]]
 
*[[Isolation]]
*[[Isomers]]
=== <big><span id="K">K</span></big> ===
*[[Kerma]], K
 
*[[Kerma approximation]]
*[[Kp index]]
=== <big><span id="L">L</span></big> ===
=== <big><span id="L">L</span></big> ===*[[Lag]]
*[[Late normal tissue responses]]
*[[Latent time/period or latency interval]]
*[[Legal personLD 50/30|LD<sub>50/30</sub>]] *LET (see [[Linear energy transfer]])
*[[LegislatorsLicensee]]
*[[LimitLife Span Study]] *[[Lifetime risk]] *[[Lifetime risk estimates]]
*[[Limitation of dose]]
*[[Lineal energy]]
 
*[[Linear dose response]]
 
*[[Linear energy transfer]]
*[[Linear-non-threshold model]]
 
*[[Linear-quadratic dose response model]]
 
*LLE (see [[Lifetime risk estimates]])
 
*[[Local DRL]]
 
*Loss of Life Expectancy (see [[Lifetime risk estimates]])
*[[Low Earth orbit]]
 
*[[Low dose]]
 
*[[Low dose rate]]
*[[Low level waste]]
*[[Lung absorption typeLow linear energy transfer radiation]] *LSS (see [[Life Span Study]])
*[[Lymphatic system]]
=== <big><span id="M">M</span></big> ===
 
*[[Macrophage colony stimulating factor]]
*[[Magnetosphere]]
 
*[[Marrow cellularity]]
 
*[[Mass median diameter]]
 
*MDCT (see [[Multi-detector computed tomography]])
 
*[[Mean glandular dose]]
 
*[[Measured quantity]]
*[[Medical exposure]]
*[[Medical intervention]]
*[[Member of the public]]
*[[Mitigation]]
*MMD (see [[MonitoringMass median diameter]]) *[[Molecular imaging]] *[[Multifactorial diseases]] *[[Multiplicative risk projection model]] *[[Multistage carcinogenesis model]]
*[[Multistage tumorigenesis]]
 
*[[Multitarget equation]]
 
*[[Multi-detector computed tomography]]
 
*[[Mutation component]]
*[[Myocardial perfusion]]
 
*[[Myocardial stress test]]
=== <big><span id="N">N</span></big> ===
*[[National radon survey]]
*[[Nasal Augmenter]] *[[Natural environmentNational DRL]]
*[[Naturally occurring radioactive material]]
*[[Neurovascular syndrome]]
 
*NHEJ (see [[Non-homologous end joining]])
 
*[[Noise]] (in imaging)
 
*[[Nominal value]]
 
*[[Nominal risk coefficient]]
 
*[[Non-homologous end joining]]
*[[Non-maleficence]]
*[[Non-sphericity parameter]]
 
*[[Non-targeted effects]]
 
*[[Normal tissue complication probability]]
 
*[[Notification value]] (in CT)
 
*[[Nuclear medicine]]
*[[Nuclear track detectors]]
=== <big><span id="O">O</span></big> ===
*OAR (see [[Organ at risk]])
 
*[[Occupancy factor]]
*[[Occupational exposure]]
*OEA (see [[Occupationally exposed workerOxygen enhancement ratio]])
*[[Operational intervention levelOLINDA/EXM]]
*[[Oncogene]] *[[Operating management]] *[[Operational monitoringquantity]]
*[[Optimisation]]
 
*[[Optimisation of protection]]
 
*Organ absorbed dose (see [[Organ/tissue absorbed dose]])
 
*[[Organ at risk]]
 
*[[Organ dose equivalent]]
 
*[[Organ/tissue absorbed dose]]
 
*[[Other (systemic) tissues]]
*[[Orphan source]]
*[[Oversight]]
 
*[[Oxygen enhancement ratio]]
=== <big><span id="P">P</span></big> ===
 
*Particle fluence (see [[Fluence]])
 
*[[Particle transport]] (in biokinetics)
*[[Particle radiance]]
 
*[[Patient]]
*[[Patient entrance reference point]]
*[[Pelagic]]
 
*[[Pencil beam]]
*[[Percutaneous coronary intervention]]
*[[Pericarditis]]
*[[Personaldose equivalent]], H<sub>p</Individual Monitoringsub>(d) *[[Phantom]]
*[[Pharynx]]
 
*[[Pilomatricoma]]
*[[Planned exposure situation]]
*[[Platelet-derived growth factor]]
 
*PLDR (see [[Potentially lethal damage repair]])
 
*[[Pooled analysis]]
 
*[[Population risk]]
 
*[[Potential alpha energy concentration]]
*[[Potential exposure]]
 
*[[Potential recoverability correction factor]]
 
*[[Potentially lethal damage repair]]
*[[Practical radiological protection culture]]
*[[Precautionary principlePractice]]
*PRCF (see [[Precautionary principlePotential recoverability correction factor]])
*[[Prevailing circumstances]]
*[[Principle of optimisation]]
 
*[[Principles of protection]]
*[[Procedural values]]
*[[Projected dose]]
*[[ProphylaxisProtection quantities]]
*[[Protection strategy]]
*[[Protective action guide]]
 
*[[Protective clothing]]
*[[Prudence]]
=== <big><span id="Q">Q</span></big> ===
*[[Qualified expert]]
*[[Qualified expertQuality control testing]] (x-ray equipment) *[[Quality factor]], Q(L) *[[Quasi-threshold dose]]
=== <big><span id="R">R</span></big> ===
 
*[[Rad]]
*[[Radiation belt]]
*[[Radiation detriment]] *(see [[Radiation levelDetriment]])
*[[Radiation modifier]]
*[[Radiation protection programmerisk]]
*[[Radiation safety officer]]
*[[Radiation Sourcesource]] *[[Radiation weighting factor]], w<sub>R</sub> *[[Radiation-induced second cancer]] *[[Radiation-induced secondary malignancy]]
*[[Radiation worker]]
 
*[[Radioactive contamination]]
*[[Radioactive dispersion device]]
*[[Radioactive substance]]
 
*[[Radioactive waste]]
*[[Radioactivity]]
*[[Radiographer]]
*[[Radiological Controlled Areaattack]]
*[[Radiological practice in medicinecontrolled area]]
*[[Radiological protection principles]]
 
*[[Radiological survey]]
*[[Radionuclides of natural origin]]
*[[Radiosensitivity, cellular]]
 
*[[Radon progeny]]
 
*[[Radon-prone area]]
 
*RAP (see [[Reference Animal and Plant]])
 
*[[Ras]]
 
*[[Rb]]
 
*RBE (see [[Relative biological effectiveness]])
 
*[[Reactive oxygen species]]
*[[Reasonableness]]
*[[Recovery responder]]
*[[Red Recovery (bonecellular or tissue) marrow]] *[[Redox]] *[[Reference air kerma]] *[[Reference Animal and Plant]]
*[[Reference bioassay function]]
*[[Reference biokinetic model]]
 
*[[Referrer]]
 
*Reference female (see [[Reference Person]])
 
*[[Reference individual]]
*[[Reference level]]
*Reference male (see [[Reference Person]]) *[[Reference parameter value]] *[[Reference ManPerson]]
*[[RegulationReference phantom]]
*[[RegulatorReference value]]
*[[RehabilitationReference worker]] *[[Region]] *[[Regional diagnostic reference levels]] *[[Registry]] *REID (see [[Lifetime risk estimates]]) *[[Rigidity threshold]]
*[[Rehabilitation of living conditions]]
 
*[[Relative biological effectiveness]]
 
*[[Relative life lost]]
 
*[[Relative risk]]
 
*[[Relative survival]]
*[[Relocation]]
 
*[[Rem]]
*[[Remedial action]]
*[[Respiratory protection]]
 
*Response function (see [[Dose-response function]])
*[[Retrievability]]
*[[Rigidity]]
*[[Ring chromosome]] *[[Risk]] *[[Risk coefficient]] *[[Risk constraintmodel]] *RISM (see [[Radiation-induced secondary malignancy]]) *Risk of exposure-induced death (see (see [[Lifetime risk estimates]]) *ROS (see [[Reactive oxygen species]])
*[[Routine monitoring]]
 
*RR (see [[Relative risk]])
=== <big><span id="S">S</span></big> ===
*[[Safety analysisS coefficient (radiation weighted)]] *SAF (see [[Specific absorbed fraction]])
*[[Safety case]]
 
*[[Safety]]
*[[Safety culture]]
*[[Scintigraphy]]
 
*[[Sealed source]]
 
*[[Secondary radiation]]
 
*[[Secretory cells]]
 
*[[Security]]
 
*[[Security screening]]
 
*SEE (see [[Specific effective energy]]]
*[[Self-help protection]]
*[[SemelparousSenescence]]
*[[SenescenceSevere deterministic injury]] *[[Sheltering]] *[[Shielding]] *[[Sievert]] (Sv) *[[Size-specific dose estimate]] *SLDR (see [[Sublethal damage repair]]) *[[Slice]] (in CT & CBCT)
*[[Slow repair]]
*SOBP (see [[Soft tissueSpread-out Bragg peak]])
*[[Solar cosmic radiation]]
*[[Solar cycle]]
 
*[[Solar flare]]
*[[Solar particle event]]
*[[Solar wind]]
 
*[[Somatic effect]]
 
*Source (see [[Radiation source]])
 
*[[Source region]]
*[[Source term]]
*[[Source-related]]
 
*[[Source-related assessment]]
*[[South Atlantic anomaly]]
*[[Special (non-routine) monitoring]]
*[[SpeciesSpecific absorbed fraction]] *[[Specific effective energy]] *[[Spongiosa]]
*[[Spontaneous fission]]
 
*[[Spread-out Bragg peak]]
*[[Stakeholder]]
 
*[[Standard-size adult]]
 
*[[Stem cell]]
*[[Stenosis]]
 
*[[Stochastic effect]]
*[[Storage]]
*[[Stress testSubcutaneous tissue]]
*[[Stroke]] *[[Subcutaneous tissueSublethal damage repair]]
*[[Substantial radiation dose level]]
*[[Supervised AreaSuperposition principle]](in dosimetry)
*[[SyndromeSupervised area]]
*[[System of radiological protectionSurface contamination]]
*[[Systemic model]]
=== <big><span id="T">T</span></big> ===
 
*[[Tachycardia]]
 
*[[Target cell]]
*[[Target region]]
*[[Target tissue]]
 
*[[Targeted effects]]
*[[Telangiectasia]]
 
*[[Teratocarcinoma]]
*[[Thermodynamic diameter]]
*[[ThoronThoracic airways]]
*[[Threshold dose for tissue reactions]]
 
*[[Threshold level]]
 
*Tissue absorbed dose (see [[Organ/tissue absorbed dose]])
 
*[[Thoron progeny]]
*[[Thyroid blocking]]
*[[Time factor]]
 
*[[Time-resolved computed tomography]]
*[[Tissue equivalent material]]
 
*[[Tissue reaction]]
 
*[[Tissue weighting factor]]
*[[Tolerability]]
*[[Trabecular Tolerance dose]] (bonein Radiotherapy) marrow]]
*[[Track structure]]
*[[Transfer compartment]]
 
*[[Transfer of risk]]
*[[Transfer rate]]
*[[Transforming growth factor]]
*[[Transit cellsTransgenerational effect]] *[[Translocation]] *[[Transmission detection system]]
*[[Transparency]]
 
*Transport of risk (see [[Transfer of risk]])
 
*[[Tumour suppressor gene]]
*[[Trapped particles]]
*[[Type of exposure situationsTreatment preparation in radiotherapy]]
*[[Trophic level]]
 
*[[Types of materials]]
 
*[[Typical value]] (for DRL)
=== <big><span id="U">U</span></big> ===
*[[Unattached fraction]]
*[[Unsealed source]]
 
*[[Upper reference levels]]
 
*[[Uptake]]
*[[Utilitarian ethics]]
=== <big><span id="V">V</span></big> ===
 
*[[Value judgement]]
*[[Virtue ethics]]
 
*[[Voxel phantom]]
=== <big><span id="W">W</span></big> ===
*[[Waste disposal]]
 
*[[Waste management]]
*[[Wisdom]]
*WL (see [[Workers' health surveillanceWorking level]]) *WLM (see [[Working level month]]) *[[Worker]] *[[Working level]] *[[Working level month]] *w<sub>T</sub> (see [[Tissue weighting factor]]) *w<sub>R</sub> (see [[Radiation weighting factor]])
=== <big><span id="X">X</span></big> ===
=== <big><span id="Y">Y</span></big> ===
=== <big><span id="Z">Z</span></big> === === <big><span id="ZZ">...</span></big> === *[[Yellow α/β value]] *α/β ratio (bonesee [[α/β value]]) marrow *[[γH2AX foci]]
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