CBCT Regulatory Requirements — ORE Part 1 MCQ

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HardRadiology & ImagingCBCT Regulatory RequirementsORE Part 1

A dental practice has installed a CBCT unit and completed the required occupational radiation-protection arrangements under IRR17. Before the unit is used for its first clinical exposure, which further requirement is imposed on the employer by IR(ME)R 2017?

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Correct answer: D — Appoint an MPE and arrange appropriate pre-use equipment testing

Explanation lettering: B = shown as A · D = shown as B · A = shown as D

A is correct. Under IR(ME)R 2017, the employer must appoint and entitle a suitable medical physics expert (MPE), and radiological equipment must undergo suitable testing before it is first used clinically. This applies to a newly installed CBCT unit. The stem deliberately states that IRR17 occupational arrangements have already been completed: local rules, controlled-area designation, RPA advice and workplace radiation risk assessment are therefore not the issue being tested. CQC notification is not the relevant pre-use requirement. A supplier’s installation or commissioning document may contribute evidence but does not replace the employer’s statutory duties or appropriate acceptance testing. CPD supports competence but, alone, neither appoints an MPE nor demonstrates that the unit has been tested. Referrers are not individually registered with HSE.

Reference: Department of Health and Social Care, Guidance to the Ionising Radiation (Medical Exposure) Regulations 2017, Regulations 14 and 15, updated 2024. https://www.gov.uk/government/publications/ionising-radiation-medical-exposure-regulations-2017-guidance/guidance-to-the-ionising-radiation-medical-exposure-regulations-2017