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Thyroid collar use — NDEB AFK MCQ

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ModerateDental Radiology and ImagingThyroid collar useNDEB AFK

A 15-year-old requires bitewing radiographs for caries assessment. The receptor holder and rectangular collimation are available, and the thyroid is not in the primary beam. What is the most important consideration?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: D — Use dose optimisation consistent with current guidance

Radiographic technique should optimise dose while achieving diagnostic quality, using appropriate collimation, receptor selection, and patient-specific prescription. Repeating exposures unnecessarily conflicts with dose optimisation. The pearl is that radiation protection is a process of justification, optimisation, and diagnostic adequacy rather than a single accessory.

Reference: RCDSO Prescribing and Taking Dental Radiographs; Canadian radiology reference texts