Background: In our institution B-scans are performed by the Radiology department. Our audit sought to characterise the use of B scans. Methods: B-scans performed by the Royal Adelaide Hospital from September 2017 to June 2020 were audited. The number of scan requests, the order-to-scan (OTS) time intervals, and the scan indications were audited. De-identified data extracted included the order datetime, scan datetime, clinical indication and scan report. Indications were manually categorised by a medical officer. The results were analysed with descriptive statistics. Results: On average 143 B-scans were performed per six months, and 94.3 of all scans were performed in business hours. Same-day scans account for 54.6. Vitreous haemorrhage was the most common indication accounting for 35.8 of all scans, followed by cataract, (9.6), mass (9.5) and endophthalmitis (7.8). The median OTS time for same day scans was 1.2 hours, mean 1.6 hours. The median OTS time for next day scans was 20.6 hours, mean 20.8 hours. The median OTS time for vitreous haemorrhage overall was 1.7 hours, mean 56.8 hours. The median OTS time for vitreous haemorrhage for scan performed within seven days was 1.53 hours, mean 22 hours. Conclusion: The majority of B-scans were performed on the same day as ordered during business hours. Same day scans were on average performed within two hours. The most common indication was vitreous haemorrhage, and the median OTS time overall and mean OTS time for scans performed within seven days were within two hours.
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