Observatorio de I+D+i UPM

Memorias de investigación
Other publications:
Estimation of the axonal radius from diffusion MR data in directionally heterogeneous tissues
Year:2008
Research Areas
  • Electronics engineering
Information
Abstract
Diffusion-weighted Magnetic Resonance imaging is sensitive to self¿ diffusion of water molecules, which in turn is influenced by tissue geometry and composition. Recent models have attempted to relate the former to the latter, by including microstructural properties such as axonal radius in the signal equation, but the orientation of the axonal bundles was assumed to be known a priori. This restriction limits the application of such models to locations where white matter orientation is well defined, such as in the spinal cord. We present an extension of a previously proposed model that includes directional heterogeneity in the dis- tribution of axonal orientations, using a spherical harmonic decomposition. We prove on simulations the feasibility of estimating the model parameters, includ- ing axonal radius, both in directionally homogenous and heterogeneous tissue configurations.
International
Si
Entity
MICCAI
Place
New York, USA
Pages
7
Reference/URL
MICCAI 2008 Workshop on Computational Diffusion MRI (eds. D. Alexander, J. Gee, R. Whitaker), pp. 2-8. http://www.picsl.upenn.edu/cdmri08/proceedings.pdf
Publication type
Acta de congreso internacional
Participants
  • Participante: T. Behrens (Oxford University)
  • Autor: Rosario Sance Garzón (UPM)
  • Autor: Andres de Santos Lleo (UPM)
  • Participante: S. Jbabdi (Oxford University.)
  • Autor: Maria Jesus Ledesma Carbayo (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Tecnología de imágenes biomédicas
  • Centro o Instituto I+D+i: Centro de tecnología Biomédica CTB
  • Departamento: Ingeniería Electrónica
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)