Justification (Radiation)
The principle that a radiographic examination should only be performed when the expected clinical benefit to the patient outweighs the radiation risk.
Full Definition
Justification is one of the three core principles of radiation protection, alongside optimisation (ALARA) and dose limitation, as defined by the International Commission on Radiological Protection (ICRP). In the dental context, justification requires that every radiographic prescription be clinically warranted—that is, likely to alter patient management. Editors should recognise that 'justification' in this context is a formal radiation protection principle and not a general synonym for 'reason' or 'rationale.' Documents such as clinical guidelines, radiation protection policies, and research ethics sections require precise use of this term. It is often paired with 'selection criteria,' which specify the clinical indications for each radiographic examination type.
Usage
Usage note: Use 'justification' as a formal radiation protection term, not as a generic synonym for 'rationale.' Always pair with 'selection criteria' in clinical guideline documents.
In Context
- "The radiographic prescription must satisfy the principle of justification; the expected diagnostic yield should outweigh the associated radiation risk before any exposure is authorised." — Radiation protection policy document
- "The audit assessed whether justification and selection criteria had been applied consistently across all new patient referrals." — Dental radiology clinical audit report