Early diffusion restriction of white matter in infants with small subdural hematomas is associated with delayed atrophy

Traumatic brain injury (TBI) is a major cause of infant morbidity and mortality. In these patients, magnetic resonance imaging (MRI) including diffusion-weighted imaging (DWI) is the test of choice to describe the extent of microstructural injury. In this case series, we describe novel acute and chronic MRI findings in four infants (6–19 months) with small, unilateral subdural hematomas in whom the etiology of head injury was suspicious for non-accidental trauma (NAT). Acute (