Results 161 to 170 of about 12,725 (195)

DTI-based fiber tractography: why not?

Brain Structure and Function
Diffusion tensor imaging (DTI) has been fundamental in enabling the noninvasive exploration of the brain white matter architecture. However, the use of DTI for tractography remains challenging due to the known limitations of the tensor model in capturing complex fiber configurations.
Dogu Baran, Aydogan, Alexander, Leemans, Jessica, Dubois, Flavio, Dell'Acqua, Chiara, Maffei   +4 more
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Data-driven fiber tractography with neural networks

2018 IEEE 15th International Symposium on Biomedical Imaging (ISBI 2018), 2018
Elaborate expert modeling has been the predominant approach to fiber tractography. It attempts to invert the measurement process of diffusion-weighted MRI to reconstruct fibers. We present a purely data-driven neural network regression model for fiber tractography.
Viktor Wegmayr, Giacomo Giuliari, Stefan Holdener, Joachim M. Buhmann   +3 more
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Diffusion tensor fiber tractography of the olfactory tract

Magnetic Resonance Imaging, 2011
Magnetic resonance diffusion tensor imaging with fiber tracking is used for 3-dimensional visualization of the nervous system. Peripheral nerves and all cranial nerves, except for the olfactory tract, have previously been visualized. The olfactory tracts are difficult to depict with diffusion-weighted imaging due to the high sensitivity to ...
Mikael, Skorpil, Tyler, Rolheiser, Harold, Robertson, Anders, Sundin, Per, Svenningsson   +4 more
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DTI fiber tractography of human brain

Applied and Computational Engineering, 2023
DTI fiber tractography is a powerful tool for investigating the human brain's structural connectivity. It enables us to explore the complex network of fiber pathways that connect different regions of the brain and play a crucial role in its function. In this work, I used DWI(Diffusion-Weighted Imaging) data processing software (such as DiffusionToolkit,
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Fiber stippling: An illustrative rendering for probabilistic diffusion tractography

2011 IEEE Symposium on Biological Data Visualization (BioVis)., 2011
One of the most promising avenues for compiling anatomical brain connectivity data arises from diffusion magnetic resonance imaging (dMRI). dMRI provides a rather novel family of medical imaging techniques with broad application in clinical as well as basic neu-roscience as it offers an estimate of the brain's fiber structure completely non-invasively ...
Mathias Goldau, Alexander Wiebel, Nico S. Gorbach, Corina Melzer, Mario Hlawitschka, Gerik Scheuermann, Marc Tittgemeyer   +6 more
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Diffusion Tensor Imaging and Fiber Tractography

2009
Diffusion Tensor Imaging (DTI) is a magnetic resonance imaging (MRI) modality which can significantly improve our understanding of the brain structures and neural connectivity. DTI measures are thought to be representative of brain tissue microstructure and are particularly useful for examining organized brain regions, such as white matter tract areas.
Evanthia E. Tripoliti, Dimitrios I. Fotiadis, Konstantia Veliou   +2 more
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Diffusion tensor imaging and fiber tractography in brain malformations

Pediatric Radiology, 2013
Diffusion tensor imaging (DTI) is an advanced MR technique that provides qualitative and quantitative information about the micro-architecture of white matter. DTI and its post-processing tool fiber tractography (FT) have been increasingly used in the last decade to investigate the microstructural neuroarchitecture of brain malformations.
Andrea, Poretti, Avner, Meoded, Andrea, Rossi, Charles, Raybaud, Thierry A G M, Huisman   +4 more
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Atlas-guided probabilistic diffusion-tensor fiber tractography

2008 5th IEEE International Symposium on Biomedical Imaging: From Nano to Macro, 2008
We demonstrate the use of a diffusion tensor atlas to perform probabilistic tractography in diffusion tensor data. The tensors from eleven subjects are normalized into a common space by optimizing the similarity between tensors explicitly. The distribution of tensor orientations in the atlas space forms a prior distribution for the fiber orientation ...
Philip A. Cook, Hui Zhang 0005, Suyash P. Awate, James C. Gee   +3 more
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Automatic fiber tractography from DTI and its validation

Proceedings IEEE International Symposium on Biomedical Imaging, 2003
To understand evolving pathology in the central nervous system (CNS) and develop effective treatments, it is essential to correlate the nerve fiber connectivity with the visualization of function. Such information is fundamental in CNS processes since anatomical connections determine where information is passed and processed Diffusion tensor imaging ...
Baba C. Vemuri, Yunmei Chen, Murali Rao, Zhizhou Wang, Tim McGraw, Thomas H. Mareci, Stephen J. Blackband, P. Reier   +7 more
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Fiber correlational tractography with neurovascular coupling and cognition in hypertension

Neuroscience
Hypertension is the primary risk factor for cerebral small vessel disease (CSVD). However, its mechanistic links are yet to be completely understood. Advancements in diffusion-weighted magnetic resonance imaging (dMRI) increased sensitivity in detecting subtle white matter (WM) structural integrity changes.
Manuel Fortunato, Ricardo Morais, Isabel Santana, Pedro Castro, Jorge Polónia, Elsa Azevedo, João Paulo Cunha, Ana Monteiro   +7 more
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