RT Journal Article
SR Electronic
T1 Selectively Reduced Posterior Corpus Callosum Size in a Population-Based Sample of Young Adults Born with Low Birth Weight
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 970
OP 975
DO 10.3174/ajnr.A2594
VO 32
IS 5
A1 S.M. Aukland
A1 R. Westerhausen
A1 K.J. Plessen
A1 M.D. Odberg
A1 I.B. Elgen
A1 B.S. Peterson
A1 L. Ersland
A1 G.E. Eide
A1 K. Rosendahl
YR 2011
UL http://www.ajnr.org/content/32/5/970.abstract
AB BACKGROUND AND PURPOSE: Several studies suggest that VLBW is associated with a reduced CC size later in life. We aimed to clarify this in a prospective, controlled study of 19-year-olds, hypothesizing that those with LBWs had smaller subregions of CC than the age-matched controls, even after correcting for brain volume. MATERIALS AND METHODS: One hundred thirteen survivors of LBW (BW <2000 grams) without major handicaps and 100 controls underwent a 3T MR examination of the brain. The cross-sectional area of the CC (total callosal area, and the callosal subregions of the genu, truncus, and posterior third) was measured. Callosal areas were adjusted for head size. RESULTS: The posterior third subregion of the CC was significantly smaller in individuals born with a LBW compared with controls, even after adjusting for size of the forebrain. Individuals who were born with a LBW had a smaller CC (mean area, 553.4 mm2) than the controls (mean area, 584.1 mm2). Differences in total area, however, did not remain statistically significant after adjusting for FBV. CONCLUSIONS: The uncorrected callosal size in 19-years-olds born with LBW was smaller than that of normal controls. However, after adjusting for FBV, the group difference was restricted to the posterior third. The clinical impact of a smaller posterior part needs further investigation. aFBVarea measure of forebrain volumeANOVAanalysis of varianceBWbirth weightCCcorpus callosumDTIdiffusion tensor imagingFBVforebrain volumeGAgestational ageIQintelligence quotientLBWlow birth weightMDmean diffusivityMNIMontreal Neurologic InstituterelCCrelative corpus callosumresCCresidualized corpus callosumTBVtotal brain volume VLBWvery low birth weight