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Aim Suspected foreign body aspiration is a common attendance at the paediatric emergency department. Low dose Computer tomography (CT) protocols (0.06-2mSv) have been developed to be able to diagnose these patients more effectively. Method All paediatric low dose CT protocols for foreign body aspiration from a large tertiary level hospital were identified retrospectively over a year. Data was collected on prior imaging, result, further intervention and subsequent follow up of patients. Results Eight patients were identified. Three (37.5%) identified a foreign body on CT. All three had subsequent microlaryngoscopy and all found a foreign body present. Of the five negative scans, none re-presented or had any associated symptoms of a foreign body at follow up. Five had previous Chest X-ray, all of which were inconclusive. Conclusions Although need for ongoing research into the area, low dose CT thorax protocols for suspected foreign body aspiration is a promising and effective tool. Its use across the country will likely lead to reduced negative microlaryngoscopy rates with huge associated benefits for both the patient and the ENT department.

450 Low Dose CT Protocols - The Future for Paediatric Foreign Body Aspiration?