Abstract:
:To investigate white matter (WM) development, voxelwise analyses of diffusion tensor MRI (DTMRI) data, acquired from 12 very preterm and 11 preterm infants with gestational ages (GA) ranging from 25 to 29 and 29 to 32 weeks, respectively, and 10 newborn normal term infants were performed. T(2) relaxation measures were also generated to assess brain water content. Compared with newborn term infants, very preterm infants were found to possess reduced fractional anisotropy (FA) within the frontal lobe, and a number of anterior and posterior commissural pathways. Preterm infants possessed reduced FA mainly within the posterior regions of the corpus callosum. Unexpectedly, we observed significantly reduced FA and increased T(2) within a number of corticospinal projections in the newborn term infants compared to the preterm groups. This finding may reflect increased water concentration and/or a lowering of FA due to the presence of crossing interhemispheric WM projections. These findings indicate that care should be taken when interpreting FA indices without knowledge of the possible effects of water concentration in the newborn infant brain.
journal_name
Magn Reson Medjournal_title
Magnetic resonance in medicineauthors
Rose SE,Hatzigeorgiou X,Strudwick MW,Durbridge G,Davies PS,Colditz PBdoi
10.1002/mrm.21689subject
Has Abstractpub_date
2008-10-01 00:00:00pages
761-7issue
4eissn
0740-3194issn
1522-2594journal_volume
60pub_type
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