Results 71 to 80 of about 711,932 (170)

DTI‐ALPS Primarily Reflects White Matter Diffusion Dispersion and Microstructural Heterogeneity in Neurodegeneration: Insights From Multi‐Modal MRI

open access: yesHuman Brain Mapping, Volume 47, Issue 14, October 1, 2026.
In a 100‐patient memory‐clinic cohort, DTI‐ALPS was evaluated along with diffusion and microstructural metrics. DTI‐ALPS correlated strongly with mode of anisotropy and orientation dispersion index, and moderately with T1/FLAIR ratio and diamagnetic susceptibility, indicating that DTI‐ALPS mainly reflects white‐matter diffusion complexity rather than ...
Luca Sacchi   +14 more
wiley   +1 more source

Supratentorial High-Grade Gliomas: Maximal Safe Anatomical Resection Guided by Intraoperative Augmented Reality High-Definition Fiber Tractography

open access: yes, 2023
Introduction The theoretical advantages of augmented reality (AR) with diffusion tensor imaging (DTI)–based high- definition fiber tractography (HDFT) in high-grade glioma (HGG) surgery have not been investigated in detail.
S. Luzzi
core   +1 more source

Mapping topographic structure in white matter pathways with level set trees.

open access: yesPLoS ONE, 2014
Fiber tractography on diffusion imaging data offers rich potential for describing white matter pathways in the human brain, but characterizing the spatial organization in these large and complex data sets remains a challenge. We show that level set trees-
Brian P Kent   +3 more
doaj   +1 more source

Clinical Applications for Diffusion MRI and Tractography of Cranial Nerves Within the Posterior Fossa: A Systematic Review

open access: yesFrontiers in Neuroscience, 2019
Objective: This paper presents a systematic review of diffusion MRI (dMRI) and tractography of cranial nerves within the posterior fossa. We assess the effectiveness of the diffusion imaging methods used and examine their clinical applications.Methods ...
Jonathan Shapey   +12 more
doaj   +1 more source

Investigating the Neural Bases of Egocentric Spatial Reference Frame After Right‐Hemisphere Stroke: Brain Lesions and Disconnectome Analyses of Subjective Straight Ahead and Longitudinal Body Axis Misperception

open access: yesHuman Brain Mapping, Volume 47, Issue 14, October 1, 2026.
The figure illustrates distinct neural substrates for egocentric body reference after right‐hemisphere stroke. SSA distortions are linked to right fronto‐parietal lesions and posterior corpus callosum disconnections, whereas LBA distortions involve temporo‐occipital damage and inferior longitudinal fasciculus disconnections, emphasising a functional ...
Solène Painchaud   +5 more
wiley   +1 more source

The anatomical and radiologic relationship of the superior longitudinal system with the middle cerebral artery branches

open access: yesActa Neurochirurgica
Background The superior longitudinal fasciculus/arcuate fasciculus (SLF/AF) connects the temporal and frontal lobes through the parietal region. Although well-studied, the SLF/AF arterial supply and 3D-relationship with the middle cerebral artery (MCA ...
Mehmet E. Akyuz   +9 more
doaj   +1 more source

Intramuscular Fat as a Biomarker of Muscle Health: Strengths, Limitations and Open Challenges

open access: yesJournal of Cachexia, Sarcopenia and Muscle, Volume 17, Issue 5, October 2026.
ABSTRACT Intramuscular fat (IMF), also known as myosteatosis, refers to the accumulation of lipids within and around skeletal muscle fibres. Excess IMF is increasingly recognised as a sign of poor muscle quality, linked to reductions in strength, power and mobility, and associated with adverse outcomes in metabolic disease, osteoarthritis ...
Christopher Spence   +4 more
wiley   +1 more source

Tractografia em tempo real através de unidades de processamento gráfico [PDF]

open access: yes, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Ciência da Computação, Florianópolis, 2009.A tractografia por propagação de linhas é um método que, com base na ressonância magnética de ...
Mittmann, Adiel
core  

Global tractography with embedded anatomical priors for quantitative connectivity analysis

open access: yesFrontiers in Neurology, 2014
The main assumption of fiber-tracking algorithms is that fiber trajectories are represented by paths of highest diffusion, which is usually accomplished by following the principal diffusion directions estimated in every voxel from the measured diffusion ...
Alia eLemkaddem   +6 more
doaj   +1 more source

White matter integrity assessed by diffusion tensor tractography in a patient with a large tumour mass but minimal clinical and neuropsychological deficits [PDF]

open access: yes, 2012
Diffusion tensor imaging (DTI) tractography and image registration were used to investigate a patient with a massive left-sided brain tumor, whose size was largely disproportionate to his subtle neurological deficits.
Cercignani, Mara   +17 more
core  

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