Recherche

Afficher tous les résultats pour

Accueil

Personne

Patric Hagmann

Cette personne n’est plus à l’EPFL

À propos
Confidentialité
Mentions légales

Graph Chatbot

Publications associées (94)

Fast-Marching Tractography for Connection Matrix (Fast-TraC)

Jean-Philippe Thiran, Xavier Gigandet, Patric Hagmann, Reto Meuli, Leila Cammoun

Although high angular resolution diffusion MRI techniques are able to solve multiple intra-voxel fiber orientations, the usual streamline Diffusion Spectrum Imaging (DSI) tractography algorithms present some limitations in their ability to map complex fibe ...

2008

Error and Attack Tolerance of Layered Complex Networks

Patrick Thiran, Patric Hagmann, Maciej Kurant

Many complex systems may be described by not one but a number of complex networks mapped on each other in a multi-layer structure. Because of the interactions and dependencies between these layers, the state of a single layer does not necessarily reflect w ...

2007

Deriving scalar maps from Diffusion Spectrum MRI

Jean-Philippe Thiran, Xavier Gigandet, Patric Hagmann, Reto Meuli, Van Jay Wedeen, Leila Cammoun

Whole brain DSI acquisitions are now clinically feasible. It is therefore necessary to have scalar maps available in order to easily visualize summary statistics of the full 3D diffusion pdf available in every voxel. We show how to derive from DSI not only ...

IEEE2007

A method to study alterations in networks of structural connectivity

Jean-Philippe Thiran, Xavier Gigandet, Patric Hagmann, Reto Meuli, Leila Cammoun

IEEE2007

How much confidence do we have in a MRI tractography experiment?

Jean-Philippe Thiran, Xavier Gigandet, Patric Hagmann, Reto Meuli

When performing a tractography experiment it is essential to know whether a reconstructed tract results from the diffusion signal itself or from some random effect or noise. In this study, we introduce a way to associate to every connection a confidence le ...

IEEE2007

Representing Diffusion MRI in 5D Simplifies Regularization and Segmentation of White Matter Tracts

Jean-Philippe Thiran, Xavier Bresson, Patric Hagmann, Lisa Jonasson, Van Jay Wedeen

Institute of Electrical and Electronics Engineers2007

A level set method for segmentation of the thalamus and its nuclei in DT-MRI

Jean-Philippe Thiran, Xavier Bresson, Patric Hagmann, Reto Meuli, Lisa Jonasson

2007

Mapping Human Whole-Brain Structural Networks with Diffusion MRI

Patrick Thiran, Jean-Philippe Thiran, Xavier Gigandet, Patric Hagmann, Reto Meuli, Maciej Kurant, Van Jay Wedeen

Understanding the large-scale structural network formed by neurons is a major challenge in system neuroscience. A detailed connectivity map covering the entire brain would therefore be of great value. Based on diffusion MRI, we propose an efficient methodo ...

2007

Fibertract segmentation in position orientation space from high angular resolution diffusion MRI

Jean-Philippe Thiran, Patric Hagmann, Reto Meuli, Lisa Jonasson, Van Jay Wedeen, Thomas Deffieux

In diffusion MRI, standard approaches for fibertract identification are based on algorithms that generate lines of coherent diffusion, currently known as tractography. A tract is then identified as a set of such lines selected on some criteria. In the pres ...

2006

Hand preference and sex shape the architecture of language networks

Jean-Philippe Thiran, Patric Hagmann, Reto Meuli, Leila Cammoun

In right-handed subjects, language processing relies predominantly on left hemisphere networks, more so in men than in women, and in right- versus left-handers. Using DT-MRI tractography, we have shown that right-handed men are massively interconnected bet ...

Wiley2006

Understanding Diffusion MR Imaging Techniques: From Scalar Diffusion-weighted Imaging to Diffusion Tensor Imaging and Beyond

Jean-Philippe Thiran, Patric Hagmann, Reto Meuli, Lisa Jonasson, Van Jay Wedeen

The complex structural organization of the white matter of the brain can be depicted in vivo in great detail with advanced diffusion magnetic resonance (MR) imaging schemes. Diffusion MR imaging techniques are increasingly varied, from the simplest and mos ...

2006

SWISSMETRO - Polarized Linear Motor Combined With Levitation Actuators

Marcel Jufer, Patric Hagmann, Christophe Espanet

SWISSMETRO is a MAGLEV Project, designed for a speed up to 500 km/h in two tunnels under partial vacuum. The authors investigate new possibilities to combine the propulsion and levitation. Polarized inductors for the levitation are studied, implying a pola ...

2005

From diffusion MRI to brain connectomics

Patric Hagmann

The success of diffusion MRI is deeply rooted in the fact that during their micrometric random displacements water molecules explore tissue microstructure. Hence by labeling magnetically spins of displaced water, diffusion MRI provides us with exquisite in ...

EPFL2005

White matter fiber tract segmentation in DT-MRI using geometric flows

Jean-Philippe Thiran, Olivier Cuisenaire, Xavier Bresson, Patric Hagmann, Reto Meuli, Lisa Jonasson

In this paper, we present a 3D geometric flow designed to segment the main core of fiber tracts in diffusion tensor magnetic resonance images. The fundamental assumption of our fiber segmentation technique is that adjacent voxels in a tract have similar pr ...

2005

Page 5 sur 5