A gyral coordinate system predictive of fibre orientations
| العنوان: | A gyral coordinate system predictive of fibre orientations |
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| المؤلفون: | Krikor Dikranian, Saâd Jbabdi, Stamatios N. Sotiropoulos, Matteo Bastiani, Timothy E.J. Behrens, Michiel Cottaar, Charles D. Chen, David C. Van Essen |
| بيانات النشر: | Elsevier, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Adult, Cognitive Neuroscience, Geometry, Grey matter, computer.software_genre, 050105 experimental psychology, Article, White matter, 03 medical and health sciences, Sir Peter Mansfield Imaging Centre (SPMIC), 0302 clinical medicine, Voxel, Brodmann area 4, Cortex (anatomy), mental disorders, medicine, Connectome, Image Processing, Computer-Assisted, Humans, 0501 psychology and cognitive sciences, Beacon - Precision Imaging, Physics, Cerebral Cortex, Principal Component Analysis, Quantitative Biology::Neurons and Cognition, 05 social sciences, Motor Cortex, Somatosensory Cortex, White Matter, Axons, medicine.anatomical_structure, Diffusion Magnetic Resonance Imaging, Neurology, nervous system, Primary motor cortex, computer, 030217 neurology & neurosurgery, Diffusion MRI, Brodmann area |
| الوصف: | When axonal fibres approach or leave the cortex, their trajectories tend to closely follow the cortical convolutions. To quantify this tendency, we propose a three-dimensional coordinate system based on the gyral geometry. For every voxel in the brain, we define a “radial” axis orthogonal to nearby surfaces, a “sulcal” axis along the sulcal depth gradient that preferentially points from deep white matter to the gyral crown, and a “gyral” axis aligned with the long axis of the gyrus.\ud \ud When compared with high-resolution, in-vivo diffusion MRI data from the Human Connectome Project, we find that in superficial white matter the apparent diffusion coefficient (at b = 1000) along the sulcal axis is on average 16% larger than along the gyral axis and twice as large as along the radial axis. This is reflected in the vast majority of observed fibre orientations lying close to the tangential plane (median angular offset |
| وصف الملف: | PDF; application/pdf |
| اللغة: | English |
| تدمد: | 1053-8119 1095-9572 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4eb5c749f5e46bb39d44a89ba9f1ca2Test https://nottingham-repository.worktribe.com/file/948672/1/1-s2.0-S1053811918303501-main.pdfTest |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....f4eb5c749f5e46bb39d44a89ba9f1ca2 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10538119 10959572 |
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