Fast MRI Misses SAH and Parenchymal Injury in Pediatric TBI vs Routine MRI

Retrospective: in pediatric traumatic brain injury, fast MRI detected intracranial injury in all 68 routine-MRI-positive cases, but sensitivity was 75.0% for subarachnoid hemorrhage and 64.5% for parenchymal injury.

• Retrospective paired cohort of 69 children ≤6 years (2014–2024) with TBI who underwent fast MRI and routine MRI within 7 days; 2471 with only fast MRI were also followed for missed injuries.
• Among 1122 re-presentations after negative fast MRI, 4 had traumatic findings on follow-up imaging, all attributed to new injury.
• Limitations: small selected paired cohort, single-center design, potential selection bias, and reliance on re-presentation for safety validation.

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