by Wajiha Bano, Mohammad Golbabaee, Arnold Benjamin, Ian Marshall, Michael Davies
Abstract:
We propose an approach that can reconstruct isotropic T2* Maps from undersampled data with improved accuracy by utilizing the phase information. Our approach extends the acceleration attained in Parallel Imaging(PI) to Maximum Likelihood Estimation(MLE) by imposing the exponential relaxation directly in the complex signal domain. The method was tested on a Multiecho Gradient Echo(MEGE) T2* mapping experiment in a numerical phantom and a human brain with realtime (prospective) undersampling. The approach showed that incorporating the phase information to perform coherent tting resulted in better denoising and improved accuracy of the parametric maps.
Reference:
Wajiha Bano, Mohammad Golbabaee, Arnold Benjamin, Ian Marshall, Michael Davies, "Improved Accuracy of Accelerated 3D T2* Mapping through Coherent Parallel Maximum Likelihood Estimation", In Joint Annual Meeting ISMRM-ESMRMB 2018 ; Conference date: 16-06-2018 Through 21-06-2018, 2018.
Bibtex Entry:
@inproceedings{Bano_2018,
title = "Improved Accuracy of Accelerated 3D T2* Mapping through Coherent Parallel Maximum Likelihood Estimation",
abstract = "We propose an approach that can reconstruct isotropic T2* Maps from undersampled data with improved accuracy by utilizing the phase information. Our approach extends the acceleration attained in Parallel Imaging(PI) to Maximum Likelihood Estimation(MLE) by imposing the exponential relaxation directly in the complex signal domain. The method was tested on a Multiecho Gradient Echo(MEGE) T2* mapping experiment in a numerical phantom and a human brain with realtime (prospective) undersampling. The approach showed that incorporating the phase information to perform coherent tting resulted in better denoising and improved accuracy of the parametric maps.",
author = "Wajiha Bano and Mohammad Golbabaee and Arnold Benjamin and Ian Marshall and Michael Davies",
year = "2018",
month = "2",
day = "1",
language = "English",
booktitle= "Joint Annual Meeting ISMRM-ESMRMB 2018 ; Conference date: 16-06-2018 Through 21-06-2018",
url={https://www.research.ed.ac.uk/portal/en/publications/improved-accuracy-of-accelerated-3d-t2-mapping-through-coherent-parallel-maximum-likelihood-estimation(ce799d8e-6c37-4bb6-be2b-abef5897d5f4).html}
}