Spatially adaptive mixture modeling for analysis of fMRI time series

T Vincent, L Risser, P Ciuciu - IEEE transactions on medical …, 2010 - ieeexplore.ieee.org
Within-subject analysis in fMRI essentially addresses two problems, the detection of brain
regions eliciting evoked activity and the estimation of the underlying dynamics. In Makni …

A spatio-temporal nonparametric Bayesian variable selection model of fMRI data for clustering correlated time courses

L Zhang, M Guindani, F Versace, M Vannucci - NeuroImage, 2014 - Elsevier
In this paper we present a novel wavelet-based Bayesian nonparametric regression model
for the analysis of functional magnetic resonance imaging (fMRI) data. Our goal is to provide …

Spatio-temporal wavelet regularization for parallel MRI reconstruction: application to functional MRI

L Chaari, P Ciuciu, S Mériaux, JC Pesquet - … Resonance Materials in …, 2014 - Springer
Background Parallel magnetic resonance imaging (MRI) is a fast imaging technique that
helps acquiring highly resolved images in space/time. Its performance depends on the …

Min-max extrapolation scheme for fast estimation of 3D Potts field partition functions. Application to the joint detection-estimation of brain activity in fMRI

L Risser, T Vincent, F Forbes, J Idier… - Journal of Signal …, 2011 - Springer
In this paper, we propose a fast numerical scheme to estimate Partition Functions (PF) of
symmetric Potts fields. Our strategy is first validated on 2D two-color Potts fields and then on …

[PDF][PDF] Soma-workflow: a unified and simple interface to parallel computing resources

S Laguitton, D Riviere, T Vincent… - MICCAI workshop on …, 2011 - researchgate.net
Parallel computing resources are now available everywhere, from a simple multiple core
laptop to sophisticated clusters and grids. Soma-workflow originated in the observation that …

[PDF][PDF] Multidimensional wavelet-based regularized reconstruction for parallel acquisition in neuroimaging

L Chaâri, S Mériaux, S Badillo, JC Pesquet… - 2011a, submitted to …, 2013 - academia.edu
Parallel MRI is a fast imaging technique that enables the acquisition of highly resolved
images in space or/and in time. The performance of parallel imaging strongly depends on …

Potts model parameter estimation in Bayesian segmentation of piecewise constant images

RG Rosu, JF Giovannelli, A Giremus… - 2015 IEEE International …, 2015 - ieeexplore.ieee.org
The paper presents a method for estimating the parameter of a Potts model jointly with the
unknowns of an image segmentation problem. The method addresses piecewise constant …

Adaptively and spatially estimating the hemodynamic response functions in fMRI

J Wang, H Zhu, J Fan, K Giovanello, W Lin - Medical Image Computing …, 2011 - Springer
In an event-related functional MRI data analysis, an accurate and robust extraction of the
hemodynamic response function (HRF) and its associated statistics (eg, magnitude, width …

Impact of the parallel imaging reconstruction algorithm on brain activity detection in fMRI

L Chaâri, S Ménauz, JC Pesquet… - 2010 3rd International …, 2010 - ieeexplore.ieee.org
PMRI is a fast imaging technique that allows reconstruction of full FoV images based on
undersampled k-space data acquired using multiple reciever coils with complementary …

Deconvolution-segmentation for textured images

JF Giovannelli, C Vacar - 2017 25th European Signal …, 2017 - ieeexplore.ieee.org
The paper tackles the problem of joint deconvolution and segmentation specifically for
textured images. The images are composed of patches of textures that belong to a set of K …