Results 61 to 70 of about 25,442 (250)
NeuroImage, 2022 Limitations in the accuracy of brain pathways reconstructed by diffusion MRI (dMRI) tractography have received considerable attention. While the technical advances spearheaded by the Human Connectome Project (HCP) led to significant improvements in dMRI ...
Chiara Maffei +50 more
doaj +1 more source
Nosotchu, 2004 脳には白質線維の方向による水の拡散のしやすさの違い(拡散異方性diffusion anisotropy)があり,条件を満たした撮像を行い,テンソルを用いて解析すると,白質による拡散異方性の程度(白質によりどれだけ水分子が白質の方向に沿って動きやすく,白質と直交する方向に動きにくいかの程度)が定量化でき,さらに白質線維の方向も知ることができる.我々は拡散テンソルデータから白質線維による異方性を高速に追跡して拡散テンソルから見た"白質路"を描出するソフトを開発し,その臨床応用を行った.錐体路近傍の急性期脳梗塞においては,拡散テンソルtractographyにより,錐体路と梗塞との3次元的関係がより明瞭に描出され,予後予想に役立つことが示された.脳動静脈奇形などの脳血管障害 ...
Shigeki Aoki +3 more
openaire +2 more sources
Probabilistic Lesion Mapping to Optimize Thalamotomy Targets for Focal Hand Dystonia
Annals of Neurology, EarlyView.Objective Focal hand dystonia (FHD) severely impairs task‐specific motor control, yet the optimal surgical target for stereotactic intervention remains uncertain. This study aimed to identify the precise thalamic lesion site associated with symptomatic improvement and to clarify its network connectivity. Methods We retrospectively analyzed 164 patients
Masahiko Nishitani +12 more
wiley +1 more source
Diffusion tensor tractography of brainstem fibers and its application in pain.
PLoS ONE, 2020 Evaluation of brainstem pathways with diffusion tensor imaging (DTI) and tractography may provide insights into pathophysiologies associated with dysfunction of key brainstem circuits.
Yu Zhang +8 more
doaj +1 more source
Probabilistic MRI tractography of the optic radiation using constrained spherical deconvolution: a feasibility study. [PDF]
PLoS ONE, 2015 Imaging the optic radiation (OR) is of considerable interest in studying diseases affecting the visual pathway and for pre-surgical planning of temporal lobe resections.
Jeremy C Lim +7 more
doaj +1 more source
Tau Pathology in Alzheimer's Disease Uniquely Affects Sulcal Depths
Annals of Neurology, EarlyView.Objective Though it is widely known that tau deposition affects brain structure, the precise localization of these effects is poorly understood, especially in relation to gyral and sulcal anatomy. We investigated whether tau pathology in Alzheimer's disease (AD) preferentially affects sulci, and particularly sulcal depths.
Samira A. Maboudian +10 more
wiley +1 more source
NeuroImageDiffusion MRI-driven tractography, a non-invasive technique that reveals how the brain is connected, is widely used in brain lateralization studies.
Yifei He, Yoonmi Hong, Ye Wu
doaj +1 more source
Performance of unscented Kalman filter tractography in edema: Analysis of the two-tensor model
NeuroImage: Clinical, 2017 Diffusion MRI tractography is increasingly used in pre-operative neurosurgical planning to visualize critical fiber tracts. However, a major challenge for conventional tractography, especially in patients with brain tumors, is tracing fiber tracts that ...
Ruizhi Liao +8 more
doaj +1 more source
NeuroImage, 2020 Diffusion-weighted magnetic resonance imaging (DW-MRI) tractography is a non-invasive tool to probe neural connections and the structure of the white matter.
Gabriel Girard +10 more
doaj +1 more source
The Anatomical Record, EarlyView.Bioimaging of the sense organs and brain of fishes and reptiles. Left panel: 3D reconstruction of the head and brain of the deep‐sea viperfish Chauliodus sloani following diceCT. Right panel: A 3D reconstruction of a 70‐day‐old embryo head of the bearded dragon Pogona vitticeps following diceCT, showing the position of the segmented brain within the ...
Shaun P. Collin +9 more
wiley +1 more source