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Visualitzation and processing of diffusion tensor MRI

Authors: Prados Carrasco, Ferran;

Visualitzation and processing of diffusion tensor MRI

Abstract

La imatge amb tensor de difusió (DTI) és una nova modalitat de ressonància magnètica capaç de generar mapes del desplaçament a nivell microscòpic de l’aigua a dins del teixits del cervell com a part del procés físic de la difusió. Aquesta tècnica ha esdevingut una important eina en la investigació de les estructures i funcions cerebrals perquè ens permet tenir dades in vivo de l’orientació de les fibres de matèria blanca. Per aplicar el DTI en la pràctica clínica cal extreure i representar la informació de forma entenedora aplicant tècniques i processos de visualització especialitzats. Es poden utilitzar tècniques de tractografia per tal de trobar patrons de continuïtat dins del cervell, a partir de fer el seguiment pas a pas del camí seguit per un conjunt de partícules que es deixen en un camp vectorial. D’aquesta forma és com s’obtenen els mapes de fibres de matèria blanca.

Diffusion Tensor Imaging (DTI) is a new magnetic resonance imaging modality capable of producing quantitative maps of microscopic natural displacements of water molecules that occur in brain tissues as part of the physical diffusion process. This technique has become a powerful tool in the investigation of brain structure and function because it allows for in vivo measurements of white matter fiber orientation. The application of DTI in clinical practice requires specialized processing and visualization techniques to extract and represent acquired information in a comprehensible manner. Tracking techniques are used to infer patterns of continuity in the brain by following in a step-wise mode the path of a set of particles dropped into a vector field. In this way, white matter fiber maps can be obtained.

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Keywords

Tesis i dissertacions acadèmiques, 616.8, White matter fiber orientation, Orientación de fibras de materia blanca, Ressonància magnètica, 616.8 - Neurologia. Neuropatologia. Sistema nerviós, Anisotropia, 68, Orientació de fibres de matèria blanca, Diffusion Tensor Imaging, Fibertracking, 68 - Indústries, oficis i comerç d'articles acabats. Tecnologia cibernètica i automàtica, DTI, Magnetic resonance, Resonancia magnética, Anisotropy, Imatge amb tensor de difusió

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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