Reject Rate Corrective Action — ORE Part 1 MCQ
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Correct answer: A — Analyse rejected images, record faults and causes, then implement targeted corrective measures
Explanation lettering: D = shown as B · E = shown as C · C = shown as D · B = shown as E
A is correct. SDCEP recommends that at least 95% of digital dental radiographs are diagnostically acceptable; a 15% rejection rate therefore requires quality-assurance action. Rejected images should be analysed, with the deficiency and suspected cause recorded, so that proportionate corrective action can be taken. This may include retraining for positioning or receptor placement, review of exposure protocols, or equipment assessment where indicated. B fails to investigate a result outside the target. C may increase patient dose and assumes, without evidence, that exposure is the cause. D is disproportionate. E may ultimately be appropriate for demonstrated equipment failure, but replacement before analysing the rejection pattern is not justified.
Reference: Scottish Dental Clinical Effectiveness Programme (SDCEP). Practice Support Manual: Quality Assurance of Clinical Image Quality. https://www.psm.sdcep.org.uk/topics/radiation-protection/quality-assurance/quality-assurance-of-clinical-image-quality/