Probabilistic Topography of Human Corpus Callosum Using Cytoarchitectural Parcellation and High Angular Resolution Diffusion Imaging Tractography

被引:154
作者
Chao, Yi-Ping [1 ]
Cho, Kuan-Hung [1 ]
Yeh, Chun-Hung [2 ]
Chou, Kun-Hsien [3 ]
Chen, Jyh-Horng [1 ]
Lin, Ching-Po [2 ,4 ,5 ]
机构
[1] Natl Taiwan Univ, Dept Elect Engn, Interdisciplinary MRI MRS Lab, Taipei 10764, Taiwan
[2] Natl Yang Ming Univ, Dept Biomed Imaging & Radiol Sci, Taipei 112, Taiwan
[3] Natl Yang Ming Univ, Inst Biomed Engn, Taipei 112, Taiwan
[4] Natl Yang Ming Univ, Inst Neurosci, Lab Brain Connect, Taipei 112, Taiwan
[5] Natl Yang Ming Univ, MRI Res Ctr, Taipei 112, Taiwan
关键词
corpus callosum; parcellation; high angular resolution diffusion imaging; tractography; Brodmann's areas; WHITE-MATTER TRACTOGRAPHY; CONNECTIVITY-BASED PARCELLATION; DEFICIT HYPERACTIVITY DISORDER; FIBER TRACKING; SPATIAL NORMALIZATION; CORTICAL CONNECTIONS; WEIGHTED MRI; HUMAN BRAIN; TENSOR MRI; DT-MRI;
D O I
10.1002/hbm.20739
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
The function of the corpus callosum (CC) is to distribute perceptual, motor, cognitive, learned, and voluntary information between the two hemispheres of the brain. Accurate parcellation of the CC according to fiber composition and fiber connection is of upmost important. In this work, population-based probabilistic connection topographies of the CC, in the standard Montreal Neurological Institute (MNI) space, are estimated by incorporating anatomical cytoarchitectural parcellation with high angular resolution diffusion imaging (HARDI) tractography. First, callosal fibers are extracted using multiple fiber assignment by continuous tracking algorithm based on q-ball imaging (QBI), on 12 healthy and young subjects. Then, the fiber tracts are aligned in the standard MNI coordinate system based on a tract-based transformation scheme. Next, twenty-eight Brodmann's areas on the surface of cortical cortex are registered to the MNI space to parcellate the aligned callosal fibers. Finally, the population-based topological subdivisions of the midsagittal CC to each cortical target are then mapped. And the resulting subdivisions of the CC that connect to the frontal and somatosensory associated cortex are also showed. To our knowledge, it is the first topographic subdivisions of the CC done using HARDI tractography and cytoarchitectonic information. In conclusion, this sophisticated topography of the CC may serve as a landmark to further understand the correlations between the CC, brain intercommunication, and functional cytoarchitectures. Hum Brain Mapp 30:3172-3187, 2009. (C) 2009 Wiley-Liss, Inc.
引用
收藏
页码:3172 / 3187
页数:16
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