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Publications associées (113)

Fast Bias Field Correction for 9.4 Tesla Magnetic Resonance Imaging

Murat Kunt, Jean-Philippe Thiran, Meritxell Bach Cuadra, Nicolas Kunz, Rolf Gruetter, Nathalie Just, Xavier Pena Pina

In this paper the problem of intensity inhomogeneity at high magnetic field on magnetic resonance images is addressed. Specifically, rat brain images at 9.4T acquired with a surface coil are bias corrected. We propose a low- pass frequency model that takes ...

2008

Brain Surface Segmentation of Magnetic Resonance Images of the Fetus

Jean-Philippe Thiran, Meritxell Bach Cuadra, Dominique Zosso, Nawal Houhou, Marie Schaer, Damien Ferrario

In this work we present a method for the image analysis of Magnetic Resonance Imaging (MRI) of fetuses. Our goal is to segment the brain surface from multiple volumes (axial, coronal and sagittal acquisitions) of a fetus. To this end we propose a two-step ...

2008

Bi-planar 2D-to-3D Registration in Fourier Domain for Stereoscopic X-Ray Motion Tracking

Kamiar Aminian, Jean-Philippe Thiran, Meritxell Bach Cuadra, Dominique Zosso, Benoît Le Callennec

In this paper we present a new method to track bone movements in stereoscopic X-ray image series of the knee joint. The method is based on two different X-ray image sets: a rotational series of acquisitions of the still subject knee that will allow the tom ...

2008

An Active Contour-based Atlas Registration Model for Automatic Subthalamic Nucleus Targeting on MRI: Method and Validation

Valérie Duay, Jean-Philippe Thiran, Meritxell Bach Cuadra, Xavier Bresson, Francisco Javier Sanchez Castro

This paper presents a new non parametric atlas registration framework, derived from the optical flow model and the active contour theory, applied to automatic subthalamic nucleus (STN) targeting in deep brain stimulation (DBS) surgery. In a previous work, ...

Springer Berlin / Heidelberg2008

Time-Varying Segmentation for Mapping of Land Cover Changes

Jean-Philippe Thiran, François Aspert, Meritxell Bach Cuadra

Among all satellite imaging systems, Synthetic Aperture Radar (SAR) is useful for monitoring purposes, as they provide data at any time under all weather conditions. Today, three spaceborne SAR systems are operational, while by the end of 2007 three furthe ...

2007

Multimodal Evaluation for Medical Image Segmentation

Meritxell Bach Cuadra

This paper is a joint effort between five institutions that introduces several novel similarity measures and combines them to carry out a multimodal segmentation evaluation. The new similarity measures proposed are based on the location and the intensity v ...

Springer Berlin / Heidelberg2007

Direct Fourier Tomographic Reconstruction Image-To-Image Filter

Jean-Philippe Thiran, Meritxell Bach Cuadra, Dominique Zosso

We present an open-source ITK implementation of a direct Fourier method for tomographic reconstruction, applicable to parallel-beam x-ray images. Direct Fourier reconstruction makes use of the central-slice theorem to build a polar 2D Fourier space from th ...

2007

Registration of Multiple Regions Derived from the Optical Flow Model and the Active Contour Framework

Valérie Duay, Jean-Philippe Thiran, Meritxell Bach Cuadra, Xavier Bresson, Nawal Houhou

2007

A Cross Validation Study of Deep Brain Stimulation Targeting: From Experts to Atlas-Based, Segmentation-Based and Automatic Registration Algorithms

Jean-Philippe Thiran, Meritxell Bach Cuadra, Olivier Cuisenaire, Reto Meuli, Francisco Javier Sanchez Castro

Validation of image registration algorithms is a difficult task and open-ended problem, usually application-dependent. In this paper we focus on deep brain stimulation (DBS) targeting for the treatment of movement disorders like Parkinson's disease and ess ...

Institute of Electrical and Electronics Engineers2006

Correction to "Comparison and Validation of Tissue Modelization and Statistical Classification Methods in T1-Weighted MR Brain Images"

Torsten Butz, Jean-Philippe Thiran, Meritxell Bach Cuadra, Olivier Cuisenaire, Leila Cammoun

Institute of Electrical and Electronics Engineers2006

Dense Deformation Field Estimation for Atlas-based Segmentation of Pathological MR Brain Images

Valérie Duay, Jean-Philippe Thiran, Meritxell Bach Cuadra, Benoît Macq, Mathieu De Craene

Atlas registration is a recognized paradigm for the automatic segmentation of normal MR brain images. Unfortunately, atlas-based segmentation has been of limited use in presence of large space-occupying lesions. In fact, brain deformations induced by such ...

2006

Comparison and Validation of Tissue Modelization and Statistical Classification Methods in T1-weighted MR Brain Images

Torsten Butz, Jean-Philippe Thiran, Meritxell Bach Cuadra, Olivier Cuisenaire, Leila Cammoun

This paper presents a validation study on statistical non-supervised brain tissue classification techniques in MR images. Several image models assuming different hypotheses regarding the intensity distribution model, the spatial model and the number of cla ...

Institute of Electrical and Electronics Engineers2005

Segmentation of Brain Structures in Presence of a Space-Occupying Lesion

Jean-Philippe Thiran, Meritxell Bach Cuadra, Olivier Cuisenaire

Brain deformations induced by space-occupying lesions may result in unpredictable position and shape of functionally important brain structures. The aim of this study is to propose a method for segmentation of brain structures by deformation of a segmented ...

2005

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