Regional variation of white matter development in the cat brain revealed by ex vivo diffusion MR tractography.

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Tytuł:: Regional variation of white matter development in the cat brain revealed by ex vivo diffusion MR tractography.
Autorzy:: Dai G; Department of Radiology, Harvard Medical School, Boston, MA, USA; Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USA.
Das A; Division of Newborn Medicine, Department of Medicine, Children's Hospital Boston, Harvard Medical School, Boston, MA, USA; Medical Sciences in the College of Arts and Sciences, Boston University, Boston, MA, USA.
Hayashi E; Division of Newborn Medicine, Department of Medicine, Children's Hospital Boston, Harvard Medical School, Boston, MA, USA.
Chen Q; Department of Radiology, Harvard Medical School, Boston, MA, USA; Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USA.
Takahashi E; Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USA; Division of Newborn Medicine, Department of Medicine, Children's Hospital Boston, Harvard Medical School, Boston, MA, USA; Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston, MA, USA. Electronic address: .
Źródło:: International journal of developmental neuroscience : the official journal of the International Society for Developmental Neuroscience [Int J Dev Neurosci] 2016 Nov; Vol. 54, pp. 32-38. Date of Electronic Publication: 2016 Aug 24.
Typ publikacji:: Journal Article
Język:: English
Imprint Name(s):: Publication: 2020- : Hoboken, NJ : John Wiley & Sons, Inc.
Original Publication: Oxford : New York : Pergamon Press, c1983-
MeSH Terms:: Diffusion Tensor Imaging*
Brain/*anatomy & histology
Cats/*anatomy & histology
Cats/*growth & development
White Matter/*diagnostic imaging
White Matter/*growth & development
Animals ; Animals, Newborn ; Anisotropy ; Image Processing, Computer-Assisted ; Neural Pathways/diagnostic imaging ; Neural Pathways/growth & development
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Grant Information:: S10 RR019307 United States RR NCRR NIH HHS; R21 HD069001 United States HD NICHD NIH HHS; P41 RR014075 United States RR NCRR NIH HHS; S10 RR023043 United States RR NCRR NIH HHS; R01 HD078561 United States HD NICHD NIH HHS; S10 RR023401 United States RR NCRR NIH HHS
Contributed Indexing:: Keywords: Cat; Development; Diffusion imaging; Tractography; White matter
Entry Date(s):: Date Created: 20160829 Date Completed: 20170327 Latest Revision: 20200106
Update Code:: 20240104
PubMed Central ID:: PMC5088495
DOI:: 10.1016/j.ijdevneu.2016.08.004
PMID:: 27568056
: Czasopismo naukowe

Three-dimensional reconstruction of developing fiber pathways is essential to assessing the developmental course of fiber pathways in the whole brain. We applied diffusion spectrum imaging (DSI) tractography to five juvenile ex vivo cat brains at postnatal day (P) 35, when the degree of myelination varies across brain regions. We quantified diffusion properties (fractional anisotropy [FA] and apparent diffusion coefficient [ADC]) and other measurements (number, volume, and voxel count) on reconstructed pathways for projection (cortico-spinal and thalamo-cortical), corpus callosal, limbic (cingulum and fornix), and association (cortico-cortical) pathways, and characterized regional differences in maturation patterns by assessing diffusion properties. FA values were significantly higher in cortico-cortical pathways within the right hemisphere compared to those within the left hemisphere, while the other measurements for the cortico-cortical pathways within the hemisphere did not show asymmetry. ADC values were not asymmetric in both types of pathways. Interestingly, tract count and volume were significantly larger in the left thalamo-cortical pathways compared to the right thalamo-cortical pathways. The bilateral thalamo-cortical pathways showed high FA values compared to the other fiber pathways. On the other hand, ADC values did not show any differences across pathways studied. These results demonstrate that DSI tractography successfully depicted regional variations of white matter tracts during development when myelination is incomplete. Low FA and high ADC values in the cingulum bundle suggest that the cingulum bundle is less mature than the others at this developmental stage.
(Copyright © 2016 ISDN. Published by Elsevier Ltd. All rights reserved.)

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