ICRP Glossary

A

• Absorption Type

• Accelerated fractionation

• Acceptance test

• Access Control

• Accountability

• Action Level

• Active (red) bone marrow

• Activity median thermodynamic diameter (AMTD)

• Activity, A

• Acute Exposure

• Adventitious

• Adventitious Source

• Aerodynamic diameter (dae)

• Air sampling

• Air-kerma rate constant

• Air-kerma rate constant (Γδ)

• Air-kerma, entrance surface

• Air-kerma, incident (Ki)

• Air-kerma, product (PKA)

• Alimentary tract

• Alimentary tract transfer factor, fA

• Alpha decay

• Alveolar-interstitial region, AI

• Angiogenesis

• Annihilation photons

• Annual dose

• Area monitoring

• Auger transition

• Authorised Discharge

• Authorization

• Authorized limit

• Autoimmune disease

• Autonomy

• Avalanche

• Averted dose

B

• Background dose (rate)

• Backscatter Factor (B)

• Basal cell

• Beneficence

• Benthic

• Best Available Techniques (BAT)

• Beta-minus decay

• Beta-plus decay

• Bioassay

• Bioassay function

• Biokinetic model

• Biological dosimetry

• Biomedical research volunteer

• Bioturbation

• Bone marrow

• Bradycardia

• Branching fraction

• Bronchial region

• Bystander effect

C

• Calibration

• Cardiac arrhythmias

• Cardiac valve diseases

• Cardiomyopathy

• Cardioverter-defibrillator

• Categories of exposure

• Category of exposed individual

• Cell death

• Chromosome dosimetry

• Chronic exposure

• Class SR-0 gases

• Class SR-1 gases

• Class SR-2 gases

• Clearance level

• Clonogenic cells

• Clonogenic survival

• Co-expertise

• Colony

• Committed effective dose, E(τ)

• Commodity

• Complex tissues

• Computed tomography dose index, CTDI

• Conditional renewing (complex or flexible) tissues

• Confidence limits

• Confinement

• Connective tissue

• Consequential late effects

• Constancy test

• Consumer product

• Contamination

• Control measures

• Coronary heart disease/congestive heart disease

• Cortical (bone) marrow

• Cost-benefit analysis

• Coster-Kronig (CK) transition

• Critical group

• Curie, Ci

• Cytokines

D

• D0

• Decay constant

• Decision threshold

• Decommissioning

• Decontamination

• Decontamination factor

• Defence-in-depth

• Deontological Ethics

• Deposition class

• Derived consideration reference level

• Diastasis

• Dichotomous

• Differentiation

• Dignity

• Direct bioassay

• Disposal

• Disposal Facility

• DNA damage signalling

• Dose assessment/estimation

• Dose constraint

• Dose criteria

• Dose equivalent in an organ or tissue, HT,Q

• Dose limit

• Dose Modifying Factor (DMF)

• Dose per unit intake, DPUI

• Dose rate

• Dose rate effectiveness factor, DREF

• Dosemeter/dosimeter

• Dose-rate effect

• Dose–response function (DRF)

• Dose-threshold

• Dosimetrists

• Dysrhythmia

E

• Early effect

• Early normal tissue responses

• Effect Dose 50 (ED50)

• Effective charge number, Z*

• Effective dose equivalent, HE

• Effective half-life (Teff)

• Electron-capture decay

• Electrophysiology

• Emergency

• Emergency exposure situation

• Emergency plan

• Emergency preparedness

• Emergency procedures

• Emergency Worker

• Endogeneous excretion

• Entrance surface dose

• Environmental (radiation) monitoring

• Environmental exposure

• Environmental radiation protection

• Epithelium

• Equity

• Equivalent dose (HT)

• Erythropoietin

• Ethics

• Event tree analysis

• Excretion function

• Excretion rate

• Exempt waste

• Exemption level

• Existing exposure situation

• Exponential survival curve

• Exposure

• Exposure assessment

• Exposure Pathway

• Exposure situation

• External radiation

• Extrapolation number

• Extrathoracic airways

• Extremity dosemeter

F

• Fairness

• Fault tree analysis

• Field-size effect

• Fixed (surface) contamination

• Flexible tissues

• Fluoroscopically guided interventions

• Forbiddenness

• Fractionation

• Fractionation sensitivity

G

• Galactic cosmic radiation (GCR)

• Gamma ray

• Gastrointestinal

• Gastrointestinal syndrome

• Geochemical phase association

• Graded approach

• Granulocyte colony-stimulating factor

• Granulocyte-macrophage colony-stimulating factor

• Growth fraction

• Growth hormone (somatotropin)

H

• Habitual mouth breather

• Habitual nose breather

• Half-life, physical (T1/2)

• Hazard

• Health Surveillance

• Heliosphere

• Hierarchical tissues

• High level waste, HLW

• Hormones

• Human Respiratory Tract Model (HRTM)

• Hyperbaric oxygen

• Hypertrophic cardiomyopathy

• Hypoplasia

I

• Immune system

• In vivo measurement

• Inactive (bone) marrow

• Incident

• Inclusiveness

• Individual decontamination

• Individual dose

• Individual dose equivalent

• Individual dose restriction

• Individual monitoring

• Individual-related

• Individual-related

• Individual-related assessment

• Informed Consent

• Ingestion exposure planning zone, IEPZ

• Inhalability

• Inhalation class

• Initial slope

• Inner bremsstrahlung

• Institutional control

• Intermediate level waste, ILW

• Internal conversion electron

• Interphase death

• Intervention Level

• Interventional procedure

• Investigation level

• Iodine prophylaxis

• Iso-effect plots

• Isolation

• Isomeric transition decay

• Isomers

• Isotropic geometry

• Iteroparous

• Itinerant (radiation) worker

J

• Justice

• Justification

K

• K, Kp index

• Kerma-area product (KAP)

L

• Late effect, delayed effect

• Latent time/period or latency interval

• Legal person

• Legislators

• Limit

• Limitation of dose

• Lineal energy

• Linear no-threshold (LNT) hypothesis

• Linear-non-threshold (LNT) model

• Low Earth orbit (LEO)

• Low level waste, LLW

• Low toxicity alpha emitter

• Lung absorption type

• Lymphatic system

M

• Macrophage colony stimulating factor

• Magnetosphere

• Medical exposure

• Medical intervention

• Member of the public

• Mendelian diseases

• Minimum significant activity (MSA)

• Mitigation

• Monitoring

• Multistage tumorigenesis

• Myocardial perfusion

N

• Nasal Augmenter

• Natural background

• Natural environment

• Naturally occurring radioactive material (NORM)

• Necrosis

• Neurological syndrome

• Neurovascular syndrome

• Non-maleficence

• Non-sphericity parameter (η)

• Nuclear track detectors

• Nuclear transformation

O

• Occupational exposure

• Occupationally exposed worker

• Oedema

• Operational intervention level, OIL

• Operational monitoring

• Optically stimulated luminescence (OSL) dosimeters

• Optimisation

• Orphan source

• Oversight

P

• Particle radiance, Φ ̇Ω

• Patient

• Patient entrance reference point

• Peak skin dose

• Pelagic

• Percutaneous coronary intervention (PCI)

• Pericarditis

• Personal air sampling

• Personal/Individual Monitoring

• Pharynx

• Planned exposure situation

• Platelet-derived growth factor

• Poisson distribution

• Potential exposure

• Practical radiological protection culture

• Precautionary principle

• Precautionary principle

• Prevailing circumstances

• Primary limit

• Primordial radionuclides

• Principle of application of dose limits

• Principle of justification

• Principle of optimisation

• Procedural values

• Progenitor cell

• Prognosis

• Programmed cell death

• Projected dose

• Prophylaxis

• Prospective dose assessment

• Protection strategy

• Protective action

• Protective action guide, PAG

• Protective clothing

• Prudence

• Public exposure

Q

• Qualified expert

R

• Rad

• Radiation belt

• Radiation detriment

• Radiation dose

• Radiation level

• Radiation modifier

• Radiation protection programme

• Radiation safety officer, RSO

• Radiation Source

• Radiation worker

• Radioactive contamination

• Radioactive dispersion device (RDD)

• Radioactive source

• Radioactive substance

• Radioactivity

• Radiofrequency ablation

• Radiographer

• Radiological Controlled Area

• Radiological practice in medicine

• Radiological protection principles

• Radiological survey

• Radionuclides of natural origin

• Radioresponsiveness

• Radiosensitiser

• Radiosensitivity, cellular

• Radon

• Random error

• Reasonableness

• Recording level

• Recovery

• Recovery responder

• Red (bone) marrow

• Reference level

• Reference Man

• Regulation

• Regulator

• Rehabilitation

• Rehabilitation of living conditions

• Relocation

• Rem

• Remedial action

• Remediation

• Repopulation

• Representative organism (non-human biota)

• Representative person

• Reproductive integrity

• Residual dose

• Respiratory protection

• Retention function

• Retrievability

• Retrospective dose assessment

• Reversibility

• Right to know

• Rigidity threshold

• Rigidity, R

• Risk constraint

• Roentgen, R

• Routine monitoring

S

• Safety analysis

• Safety case

• Safety culture

• Scintigraphy

• Self-help protection

• Semelparous

• Senescence

• Sensitivity analysis

• Slow repair

• Soft tissue

• Solar cosmic radiation

• Solar cycle

• Solar particle event

• Solar wind

• Source monitoring

• Source term

• Source-related

• South Atlantic anomaly

• Special (non-routine) monitoring

• Species

• Specific activity

• Spontaneous fission

• Stakeholder

• Stenosis

• Storage

• Stress test

• Stroke

• Subcutaneous tissue

• Substantial radiation dose level (SRDL)

• Supervised Area

• Syndrome

• System of radiological protection

• Systemic model

T

• Tachycardia

• Target cell

• Target tissue (T)

• Task-related monitoring

• Telangiectasia

• Thermodynamic diameter

• Thermoluminescence detector

• Thoron

• Threshold dose for tissue reactions

• Thyroid blocking

• Time factor

• Tissue equivalent material

• Tissue-rescuing unit

• Tolerability

• Total dose

• Trabecular (bone) marrow

• Track structure

• Transfer coefficient

• Transfer compartment

• Transforming growth factor (TGF)

• Transit cells

• Transition

• Transparency

• Trapped particles

• Type F materials

• Type M materials

• Type of exposure situations

• Type S materials

• Type V materials

U

• Unsealed source

• Utilitarian ethics

V

• Value judgement

• Valvular heart disease

• Virtue ethics

• Volume effect

W

• Waste disposal

• Weighted CTDI

• Whole body counter, WBC

• Wisdom

• Workers' health surveillance

X

• X ray

• Xerostomia

Y

• Yellow (bone) marrow