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Journal of Child Neurology, Vol. 22, No. 7, 841-847 (2007)
DOI: 10.1177/0883073807304700

Brain Structure in Prenatal Stroke: Quantitative Magnetic Resonance Imaging (MRI) Analysis

Sunita Bava, MS

San Diego State University/University of California-San Diego Joint Doctoral Program in Clinical Psychology, Department of Neurosciences, University of California, San Diego

Sarah L. Archibald, PhD

Department of Psychiatry, University of California, San Diego, Veterans Affairs San Diego Healthcare System, California

Doris A. Trauner, MD

Department of Neurosciences, University of California, San Diego, dtrauner{at}ucsd.edu

Neonatal stroke outcome studies demonstrate variable findings of either relatively spared intellectual function or persistent impairments. Volumetric measurement of the brain can provide more precise data on lesion—cognition outcomes. We studied 7 children with unilateral focal lesions from prenatal stroke. Whole-brain magnetic resonance imaging scans were analyzed to produce volumes of cortical gray matter, total white matter, cerebrospinal fluid, lesion, and lesion constricted fluid, and we ascertained the relationship of morphometric variables to intellectual and clinical outcome. Children with cystic encephalomalacia plus atrophy had poorer outcomes than children with atrophy or gliosis alone. These children also demonstrated the largest lesion size, smallest gray matter volume, and greatest proportion of hyperintense white matter in the affected hemisphere. Findings suggest that the type and size of the lesion, in addition to the integrity of white matter and residual cortex, may be better predictors of intellectual functioning than either of these indices alone.

Key Words: prenatal stroke • MRI • encephalomalacia


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