Results 31 to 40 of about 12,775 (195)
3D fiber tractography with susceptibility tensor imaging [PDF]
NeuroImage, 2012 Gradient-echo MRI has revealed anisotropic magnetic susceptibility in the brain white matter. This magnetic susceptibility anisotropy can be measured and characterized with susceptibility tensor imaging (STI). In this study, a method of fiber tractography based on STI is proposed and demonstrated in the mouse brain.
Chunlei Liu 0004 +4 more
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Beyond crossing fibers: Bootstrap probabilistic tractography using complex subvoxel fiber geometries
Frontiers in Neurology, 2014 Diffusion magnetic resonance imaging fiber tractography is a powerful tool for investigating human white matter connectivity in vivo. However, it is prone to false positive and false negative results, making interpretation of the tractography result ...
Jennifer S.W. Campbell +5 more
doaj +1 more source
NeuroImage, 2023 Diffusion MRI (dMRI) tractography is the only tool for non-invasive mapping of macroscopic structural connectivity over the entire brain. Although it has been successfully used to reconstruct large white matter tracts in the human and animal brains, the ...
Zifei Liang +3 more
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Quantitative Analysis in Cervical Spinal Cord Injury Patients Using Diffusion Tensor Imaging and Tractography [PDF]
Annals of Rehabilitation Medicine, 2022 Objective To investigate the clinical usefulness of diffusion tensor imaging (DTI) and tractography in the prediction of outcomes after traumatic cervical spinal cord injury (SCI) and to assess whether the predictability is different between DTI and ...
Geun Seok Park +4 more
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3D stochastic completion fields for fiber tractography [PDF]
2009 IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops, 2009 We approach the problem of fiber tractography from the viewpoint that a computational theory should relate to the underlying quantity that is being measured - the diffusion of water molecules. We characterize the Brownian motion of water by a 3D random walk described by a stochastic non-linear differential equation.
Parya Momayyez, Kaleem Siddiqi
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Embarrassingly Parallel Acceleration of Global Tractography via Dynamic Domain Partitioning
Frontiers in Neuroinformatics, 2016 Global tractography estimates brain connectivity by organizing signal-generating fiber segments in an optimal configuration that best describes the measured diffusion-weighted data, promising better stability than local greedy methods with respect to ...
Haiyong Wu +6 more
doaj +1 more source
Evaluation of tractogram filtering methods using human-like connectome phantoms
NeuroImage, 2023 Tractography algorithms are prone to reconstructing spurious connections. The set of streamlines generated with tractography can be post-processed to retain the streamlines that are most biologically plausible.
Tabinda Sarwar +5 more
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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
Local and Global Fiber Tractography in Patients with Epilepsy [PDF]
American Journal of Neuroradiology, 2013 Fiber tractography is increasingly used in the preoperative evaluation of endangered fiber bundles. From a clinical point of view, an accurate and methodologically transparent procedure is desired. Our aim was to evaluate the recently described global tracking algorithm compared with other established methods, such as deterministic and probabilistic ...
Constantin Anastasopoulos +6 more
openaire +3 more sources
Applications of MR fiber tractography imaging in multiple scleros
The Egyptian Journal of Radiology and Nuclear Medicine, 2015 Aim of the study: To evaluate role of fiber tractography in the assessment of white matter (WM) fiber tract affection in patient with multiple sclerosis (MS).
Lamiaa El-Sourgy +4 more
doaj +1 more source