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Disparities in Radiation Burden from Trauma Evaluation at Pediatric Versus Nonpediatric Institutions.

BACKGROUND: Computed tomography (CT) imaging protocols and prescribing practices vary across institutions. Pediatric trauma patients imaged at a pediatric trauma center (PTC) may receive less radiation than patients imaged at non-PTCs before transfer. Our objective was to determine differences in radiation exposure from imaging performed at a PTC versus non-PTCs.

METHODS: This retrospective analysis included patients <18 y old who underwent CT imaging from January 2013 to August 2015 during a trauma-related encounter. Radiation doses from CT scans were estimated and compared between scans performed at our PTC and non-PTCs before patient transfer using propensity score-weighted median regression.

RESULTS: Of 3530 CT scans, 3021 were performed at our PTC and 509 at non-PTCs. Patients imaged at non-PTCs were older and had higher injury severity (all P < 0.05). Patients imaged at non-PTCs more frequently had neck CT (29.0% versus 7.3%) and chest CT (8.3% versus 2.7%), less frequently had abdomen/pelvis CT (19.5% versus 27.9%, all P < 0.01), and had similar rates of head CT (83.9% versus 80.9%, P = 0.18). After propensity weighting, CT scanning was more frequent at non-PTCs and patients received higher cumulative radiation exposure overall (median effective dose 2.36 versus 1.57 mSv, P < 0.001) and for each body region imaged (17% more for head, 191% for neck, 81% for chest, and 33% for abdomen/pelvis).

CONCLUSIONS: Pediatric trauma patients imaged at a PTC receive lower radiation burden from CT imaging than patients initially imaged at adult institutions. Broader adoption of pediatric dosing protocols or deferring noncritical CT scans until transfer may mitigate these disparities.

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