Optimisation (Radiation)
The principle of keeping radiation doses to patients and staff as low as reasonably practicable while maintaining diagnostic image quality, operationalised in dental radiology through selection criteria, exposure parameters, and detector choice.
Full Definition
Radiation optimisation is one of the three core principles of radiation protection in clinical practice, alongside justification and dose limitation. In dental radiology, optimisation is achieved through measures such as using the fastest available image receptor, applying rectangular collimation, selecting appropriate kVp and mA settings, and using thyroid collars where indicated. It is closely related to but distinct from the ALARA (As Low As Reasonably Achievable) principle, which is its practical expression. Editors should note that 'optimisation' is the preferred spelling in British standards documents (IRMER, NCRP), and the American variant 'optimization' should be standardised per house style. The term is frequently confused with dose minimisation, which is an incorrect framing — optimisation balances dose reduction against diagnostic adequacy.
Usage
Usage note: British spelling 'optimisation' should be used in UK-facing documents; confirm house style before changing to 'optimization.' Do not conflate with 'minimisation,' which wrongly implies sacrificing image quality.
In Context
- "Radiation optimisation in dental practice requires a balance between minimising patient dose and maintaining sufficient image quality for diagnosis." — Radiation protection guidelines
- "The radiology protocol was reviewed to ensure optimisation measures, including rectangular collimation and fast receptors, were consistently applied." — Dental practice audit report