Which statement best describes the purpose of IRMER?

• A. Patient safety during exposure
• B. Safety of x-ray equipment and maintenance
• C. Protection of staff and public from general hazards
• D. Public health surveillance of radiation exposure

Answer: (A)

IRMER governs how ionising radiation is used for medical exposure, focusing on patient safety during exposure. It requires that any radiographic procedure be justified by clinical need and that the dose to the patient is kept as low as reasonably practicable, with clear responsibilities and quality assurance in place. In dental practice, this means taking radiographs only when necessary and using the lowest effective dose to obtain a diagnostic image. While protecting staff and the public and general equipment safety are important in radiation regulations overall, the main purpose of IRMER is safeguarding patients during medical exposures.