Search Results - "van Gijzen, Martin"

On‐site construction of a point‐of‐care low‐field MRI system in Africa by Obungoloch, Johnes, Muhumuza, Ivan, Teeuwisse, Wouter, Harper, Joshua, Etoku, Ivan, Asiimwe, Robert, Tusiime, Patricia, Gombya, George, Mugume, Chris, Namutebi, Mary Hellen, Nassejje, Mary Anthony, Nayebare, Maureen, Kavuma, Joseph Mark, Bukyana, Benedicto, Natukunda, Faith, Ninsiima, Patience, Muwanguzi, Abraham, Omadi, Phillip, Gijzen, Martin, Schiff, Steven J., Webb, Andrew, O'Reilly, Tom

“…Purpose To describe the construction and testing of a portable point‐of‐care low‐field MRI system on site in Africa. Methods All of the components to assemble…”
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Magnetic Susceptibility Estimation for Magnetostatics by Vijn, Aad, Lepelaars, Eugene, Dubbeldam, Johan, van Gijzen, Martin, Heemink, Arnold

“…This paper presents a parameter estimation method to determine the linear behavior of an object constructed of thin plates. Based on the magnetostatic field…”
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Mitigating undersampling errors in MR fingerprinting by sequence optimization by Heesterbeek, David G.J., Koolstra, Kirsten, Osch, Matthias J.P., Gijzen, Martin B., Vos, Franciscus M., Nagtegaal, Martijn A.

“…Purpose To develop a method for MR Fingerprinting (MRF) sequence optimization that takes both the applied undersampling pattern and a realistic reference map…”
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A survey on deep learning in medical image reconstruction by Ahishakiye, Emmanuel, Van Gijzen, Martin Bastiaan, Tumwiine, Julius, Wario, Ruth, Obungoloch, Johnes

“…Medical image reconstruction aims to acquire high-quality medical images for clinical usage at minimal cost and risk to the patients. Deep learning and its…”
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Preconditioning Navier–Stokes control using multilevel sequentially semiseparable matrix computations by Qiu, Yue, Gijzen, Martin B., Wingerden, Jan‐Willem, Verhaegen, Michel, Vuik, Cornelis

“…In this article, we study preconditioning techniques for the control of the Navier–Stokes equation, where the control only acts on a few parts of the domain…”
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Conjugate gradient variants for ℓp-regularized image reconstruction in low-field MRI by de Leeuw den Bouter, Merel L., van Gijzen, Martin B., Remis, Rob F.

“…We consider the MRI physics in a low-field MRI scanner, in which permanent magnets are used to generate a magnetic field in the millitesla range. A model…”
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Bi-CGSTAB as an induced dimension reduction method by Sleijpen, Gerard L.G., Sonneveld, Peter, van Gijzen, Martin B.

“…The Induced Dimension Reduction method [P. Wesseling, P. Sonneveld, Numerical experiments with a multiple grid- and a preconditioned Lanczos type method, in:…”
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Adaptive-size dictionary learning using information theoretic criteria for image reconstruction from undersampled k-space data in low field magnetic resonance imaging by Ahishakiye, Emmanuel, Van Gijzen, Martin Bastiaan, Tumwiine, Julius, Obungoloch, Johnes

“…Background Magnetic resonance imaging (MRI) is a safe non-invasive and nonionizing medical imaging modality that is used to visualize the structure of human…”
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Dynamically coupling full Stokes and shallow shelf approximation for marine ice sheet flow using Elmer/Ice (v8.3) by van Dongen, Eef C. H., Kirchner, Nina, van Gijzen, Martin B., van de Wal, Roderik S. W., Zwinger, Thomas, Cheng, Gong, Lötstedt, Per, von Sydow, Lina

“…Ice flow forced by gravity is governed by the full Stokes (FS) equations, which are computationally expensive to solve due to the nonlinearity introduced by…”
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Convergence and complexity study of GMRES variants for solving multi-frequency elastic wave propagation problems by Baumann, Manuel, van Gijzen, Martin B.

“…•Comparison study of three Krylov algorithms solving multi-frequency wave propagation problems.•Application of the 3D elastic ‘shifted Laplace’ preconditioner…”
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Minimizing synchronization in IDR (s) by Collignon, Tijmen P., van Gijzen, Martin B.

“…IDR (s) is a family of fast algorithms for iteratively solving large nonsymmetric linear systems. With cluster computing and in particular with Grid computing,…”
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Relaxation strategies for nested Krylov methods by van den Eshof, Jasper, Sleijpen, Gerard L.G., van Gijzen, Martin B.

“…This paper studies computational aspects of Krylov methods for solving linear systems where the matrix–vector products dominate the cost of the solution…”
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Deflated preconditioned Conjugate Gradient methods for noise filtering of low-field MR images by Shan, Xiujie, van Gijzen, Martin B.

“…We study efficient implicit methods to denoise low-field MR images using a nonlinear diffusion operator as a regularizer. This problem can be formulated as…”
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An efficient two-level preconditioner for multi-frequency wave propagation problems by Baumann, Manuel, van Gijzen, Martin B.

“…We consider wave propagation problems that are modeled in the frequency-domain, and that need to be solved simultaneously for multiple frequencies within a…”
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Low-field magnetic resonance imaging using multiplicative regularization by de Leeuw den Bouter, Merel, van Gijzen, Martin, Remis, Rob

“…In this paper we present a magnetic resonance imaging (MRI) technique that is based on multiplicative regularization. Instead of adding a regularizing…”
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The eigenvectors corresponding to the second eigenvalue of the Google matrix and their relation to link spamming by Sangers, Alex, van Gijzen, Martin B.

“…Google uses the PageRank algorithm to determine the relative importance of a website. Link spamming is the name for putting links between websites with no…”
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Conjugate gradient variants for $${\ell}_{p}$$-regularized image reconstruction in low-field MRI by de Leeuw den Bouter, Merel L., van Gijzen, Martin B., Remis, Rob F.

“…We consider the MRI physics in a low-field MRI scanner, in which permanent magnets are used to generate a magnetic field in the millitesla range. A model…”
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3D Bubbly Flow Simulation on the GPU - Iterative Solution of a Linear System Using Sub-domain and Level-Set Deflation by Gupta, R., van Gijzen, M. B., Vuik, C.

“…Solving an ill-conditioned linear system with a two level preconditioned Conjugate Gradient method on the GPU presents many options. The viability of these…”
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Evaluation of the deflated preconditioned CG method to solve bubbly and porous media flow problems on GPU and CPU by Gupta, R., Lukarski, D., van Gijzen, M. B., Vuik, C.

“…Summary In both bubbly and porous media flow, the jumps in coefficients may yield an ill‐conditioned linear system. The solution of this system using an…”
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Evaluation of multilevel sequentially semiseparable preconditioners on computational fluid dynamics benchmark problems using Incompressible Flow and Iterative Solver Software by Qiu, Yue, Gijzen, Martin B., Wingerden, Jan‐Willem, Verhaegen, Michel, Vuik, Cornelis

“…This paper studies a new preconditioning technique for sparse systems arising from discretized partial differential equations in computational fluid dynamics…”
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