This study found that clinicians could assess chest ULD-CTs for community-acquired pneumonia (CAP) with high, but not perfect, diagnostic accuracy using an ED radiologist’s assessments as reference standard. Interrater reliability among clinicians was moderate.

A higher level of clinical experience was not associated with better accuracy or interrater reliability.

This was a cross-sectional diagnostic accuracy study.

Ten emergency department clinicians (five junior clinicians, five consultants) assessed chest ultralow-dose CTs from acutely hospitalised patients suspected of having community-acquired pneumonia.

Before assessments, the clinicians attended a focused training course on assessing ultralow-dose CTs for pneumonia.

The reference standard was the assessment by an experienced emergency department radiologist.

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