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Corpus callosal connection mapping using cortical gray matter parcellation and DT-MRI

 Hae-Jeong Park  ;  Jae Jin Kim  ;  Seung-Koo Lee  ;  Jeong Ho Seok  ;  Jiwon Chun  ;  Dong Ik Kim  ;  Jong Doo Lee 
 HUMAN BRAIN MAPPING, Vol.29(5) : 503-516, 2008 
Journal Title
Issue Date
Brain Mapping/methods* ; Cerebral Cortex/cytology* ; Corpus Callosum/cytology* ; Female ; Humans ; Image Processing, Computer-Assisted ; Magnetic Resonance Imaging* ; Male ; Neural Pathways/cytology*
diffusion tensor ; corpus callosum ; tractography ; cortical parcellation
Population maps of the corpus callosum (CC) and cortical lobe connections were generated by combining cortical gray matter parcellation with the diffusion tensor fiber tractography of individual subjects. This method is based on the fact that the cortical lobes of both hemispheres are interconnected by the corpus callosal fibers. T1-weighted structural MRIs and diffusion tensor MRIs (DT-MRI) of 22 right-handed, healthy subjects were used. Forty-seven cortical parcellations in the dorsal prefrontal cortex, ventral prefrontal cortex, sensory-motor cortex, parietal cortex, temporal cortex, and occipital cortex were semi-automatically derived from structural MRIs, registered to DT-MRI, and used to identify callosal fibers. The probabilistic connections to each cortex were mapped on entire mid-sagittal CC voxels that had anatomical homology between subjects as determined by spatial registration. According to the population maps of the callosal connections, the ventral prefrontal cortex and parts of the dorsal prefrontal cortex both project fibers through the genu and rostrum. The CC regions through which the superior frontal cortex passes extend into the posterior body. Fibers arising from the parietal lobe and occipital lobe run mainly through the splenium, while fibers arising from the sensory-motor cortex pass through the isthmus. In general, dorsal or medial cortical lobes project fibers through the dorsal region of the CC, while lateral cortical lobes project fibers through the ventral region of the CC. The probabilistic subdivision of the CC by connecting cortical gray matter provides a more precise understanding of the CC.
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1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Nuclear Medicine (핵의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Dong Ik(김동익)
Park, Hae Jeong(박해정) ORCID logo https://orcid.org/0000-0002-4633-0756
Lee, Seung Koo(이승구) ORCID logo https://orcid.org/0000-0001-5646-4072
Lee, Jong Doo(이종두)
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