Publications de Lisa Jonasson | EPFL Graph Search

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

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

Changes in the radiographic characteristics of the mandibular alveolar process in dentate women with varying bone mineral density: A 5-years prospective study

Lisa Jonasson

2006

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

Segmentation of diffusion weighted MRI using the level set framework

Lisa Jonasson

Medical imaging is a rapidly growing field in which diffusion imaging is a recently developed modality. This novel imaging contrast permits in-vivo measurement of the diffusion of water molecules. This is particularly interesting in brain imaging where the ...

EPFL2005

Ultrasound Measurement of the Fibrous Cap in Symptomatic and Asymptomatic Atheromatous Carotid Plaques

Jean-Philippe Thiran, Olivier Cuisenaire, Lisa Jonasson

2005

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