ALARP - As low As Reasonably Practicable
ARSAC - Administration of Radioactive Substances Advisory Committee
BIR - British Institute of Radiology
CTDi - CT Dose index
CQC - Care Quality Commission
DAP - Dose Area Product
DLP - Dose-length product
DH - Department of Health
DHSSPS - Department of Health, Social Services & Public Safety (Northern Ireland)
DRL - Diagnostic Reference Levels                 
GB - Great Britain (England, Scotland and Wales)
HCC - Healthcare Commission
HIW - Healthcare Inspectorate of Wales
HPA - Health Protection Agency
HPC - Health Professions Council
HSE - Health and Safety Executive
IPEM - Institute of Physics and Engineering in Medicine
IR - Ionising radiations 
IRIC - Incident Reporting & Investigation Centre
IR(ME)R 2000/2006 - Ionising Radiation (Medical Exposure) Regulations 2000 / Ionising Radiation (Medical Exposure) Amendment Regulations 2006
LREC - Local Research Ethics Committee
MPE - Medical Physics Expert
NAW - National Assembly Wales
NPSA - National Patient Safety Agency
NRES - National Research Ethics Service
NRLS - National Reporting and Learning Service
NRPB - National Radiological Protection Board – now HPA
PACS - Picture Archiving and Communications Systems
PPE - Personal Protective Equipment
PRA - Prior Risk Assessment
QA - Quality assurance
QART - Quality Assurance in Radiotherapy
RCR - Royal College of Radiologists
RIS - Radiology Information Systems
RMS - Radiology Management System 
RPA - Radiation Protection Advisor
RPS - Radiation Protection Supervisor
SCoR - Society and College of Radiographers
SI - Statutory Instrument
UK - United Kingdom of Great Britain and Northern Ireland