Stephanie L Merhar1,2, Elveda Gozdas3, Jean A Tkach4,5, Nehal A Parikh1,2, Beth M Kline-Fath5, Lili He1, Weihong Yuan5,6, Mekibib Altaye7, James L Leach5, Scott K Holland8. 1. Division of Neonatology, Perinatal Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio. 2. Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio. 3. Psychiatry and Behavioral Sciences, Stanford University, Stanford, California. 4. Imaging Research Center, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio. 5. Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio. 6. Pediatric Neuroimaging Research Consortium, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio. 7. Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio. 8. Medpace Imaging Core Laboratory, Medpace Inc., Cincinnati, Ohio.
Abstract
OBJECTIVE: The accuracy of structural magnetic resonance imaging (MRI) to predict later cerebral palsy (CP) in newborns with perinatal brain injury is variable. Diffusion tensor imaging (DTI) and task-based functional MRI (fMRI) show promise as predictive tools. We hypothesized that infants who later developed CP would have reduced structural and functional connectivity as compared with those without CP. STUDY DESIGN: We performed DTI and fMRI using a passive motor task at 40 to 48 weeks' postmenstrual age in 12 infants with perinatal brain injury. CP was diagnosed at age 2 using a standardized examination. RESULTS: Five infants had CP at 2 years of age, and seven did not have CP. Tract-based spatial statistics showed a widespread reduction of fractional anisotropy (FA) in almost all white matter tracts in the CP group. Using the median FA value in the corticospinal tracts as a cutoff, FA was 100% sensitive and 86% specific to predict CP compared with a sensitivity of 60 to 80% and a specificity of 71% for structural MRI. During fMRI, the CP group had reduced functional connectivity from the right supplemental motor area as compared with the non-CP group. CONCLUSION: DTI and fMRI obtained soon after birth are potential biomarkers to predict CP in newborns with perinatal brain injury. Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.
OBJECTIVE: The accuracy of structural magnetic resonance imaging (MRI) to predict later cerebral palsy (CP) in newborns with perinatal brain injury is variable. Diffusion tensor imaging (DTI) and task-based functional MRI (fMRI) show promise as predictive tools. We hypothesized that infants who later developed CP would have reduced structural and functional connectivity as compared with those without CP. STUDY DESIGN: We performed DTI and fMRI using a passive motor task at 40 to 48 weeks' postmenstrual age in 12 infants with perinatal brain injury. CP was diagnosed at age 2 using a standardized examination. RESULTS: Five infants had CP at 2 years of age, and seven did not have CP. Tract-based spatial statistics showed a widespread reduction of fractional anisotropy (FA) in almost all white matter tracts in the CP group. Using the median FA value in the corticospinal tracts as a cutoff, FA was 100% sensitive and 86% specific to predict CP compared with a sensitivity of 60 to 80% and a specificity of 71% for structural MRI. During fMRI, the CP group had reduced functional connectivity from the right supplemental motor area as compared with the non-CP group. CONCLUSION: DTI and fMRI obtained soon after birth are potential biomarkers to predict CP in newborns with perinatal brain injury. Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.
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