Searched for: subject%3A%22quantitative%255C%2BMRI%22
(1 - 13 of 13)
document
Li, Xinqi (author)
Quantitative cardiac MRI is an increasingly important diagnostic tool for cardiovascular diseases. Yet, it is essential to have correct image registration for good accuracy and precision of quantitative mapping. Registering all baseline images from a quantitative cardiac MRI sequence, however, is nontrivial because the patient is moving, leading...
master thesis 2023
document
Nagtegaal, M.A. (author)
Magnetic Resonance Imaging (MRI) is a flexible medical imaging technique that facilitates measurement of a wide range of contrasts particularly in soft tissue (e.g. brain and heart). Conventionally, qualitative images are acquired in which certain physical tissue properties are emphasized such as the transverse and longitudinal relaxation times....
doctoral thesis 2023
document
Abo Seada, S. (author), van der Eerden, Anke W. (author), Boon, Agnita J.W. (author), Hernandez-Tamames, J.A. (author)
Differentiating among early-stage parkinsonisms is a challenge in clinical practice. Quantitative MRI can aid the diagnostic process, but studies with singular MRI techniques have had limited success thus far. Our objective is to develop a multi-modal MRI method for this purpose. In this review we describe existing methods and present a...
review 2023
document
Nagtegaal, M.A. (author), Hermann, I. (author), Weingärtner, S.D. (author), Martinez-Heras, Eloy (author), Solana, Elisabeth (author), Llufriu, Sara (author), Gass, Achim (author), Poot, Dirk H.J. (author), van Osch, Matthias J.P. (author), Vos, F.M. (author), de Bresser, Jeroen (author)
T<sub>2</sub>-hyperintense lesions are the key imaging marker of multiple sclerosis (MS). Previous studies have shown that the white matter surrounding such lesions is often also affected by MS. Our aim was to develop a new method to visualize and quantify the extent of white matter tissue changes in MS based on relaxometry properties. We...
journal article 2023
document
Tourais, Joao (author), Ploem, T.W. (author), Zadelhoff, Tijmen A.van (author), Steeg-Henzen, Christal van de (author), Oei, Edwin H.G. (author), Weingärtner, S.D. (author)
Objective: Quantitative Magnetic Resonance Imaging (MRI) holds great promise for the early detection of cartilage deterioration. Here, a Magnetic Resonance Fingerprinting (MRF) framework is proposed for comprehensive and rapid quantification of T <sub>1</sub>, T <sub>2</sub> <sup>∗</sup>, and T <sub>RAFF2</sub> with whole-knee coverage....
journal article 2023
document
Nunez-Gonzalez, L. (author), Nagtegaal, M.A. (author), Poot, D.H.J. (author), de Bresser, J. (author), van Osch, M. J.P. (author), Hernandez-Tamames, J.A. (author), Vos, F.M. (author)
MR fingerprinting (MRF) is a promising method for quantitative characterization of tissues. Often, voxel-wise measurements are made, assuming a single tissue-type per voxel. Alternatively, the Sparsity Promoting Iterative Joint Non-negative least squares Multi-Component MRF method (SPIJN-MRF) facilitates tissue parameter estimation for...
journal article 2022
document
Nagtegaal, M.A. (author), Hartsema, Emiel (author), Koolstra, Kirsten (author), Vos, F.M. (author)
Purpose: To develop an efficient algorithm for multicomponent MR fingerprinting (MC-MRF) reconstructions directly from highly undersampled data without making prior assumptions about tissue relaxation times and expected number of tissues. Methods: The proposed method reconstructs MC-MRF maps from highly undersampled data by iteratively...
journal article 2022
document
Heesterbeek, David G.J. (author), Koolstra, Kirsten (author), van Osch, Matthias J.P. (author), van Gijzen, M.B. (author), Vos, F.M. (author), Nagtegaal, M.A. (author)
Purpose: To develop a method for MR Fingerprinting (MRF) sequence optimization that takes both the applied undersampling pattern and a realistic reference map into account. Methods: A predictive model for the undersampling error leveraging on perturbation theory was exploited to optimize the MRF flip angle sequence for improved robustness...
journal article 2022
document
de Jong, Renske (author)
Fat fraction (FF) and apparent diffusion coefficient (ADC) values estimated by Dixon MRI and diffusion weighted MRI (DWI) techniques respectively, are relatively new quantitative imaging parameters and increasingly accepted as imaging biomakers for all sorts of purposes. The aim of the BOCASEcA study is to research whether these techniques can...
master thesis 2021
document
Lusse, Bryan (author)
Long acquisition times impede the routine clinical use of quantitative magnetic resonance imaging (qMRI). qMRI quantifies meaningful tissue parameters in T1-, T2-, and PD-maps, as opposed to conventional (qualitative) weighted MRI (wMRI), which only visualises contrast between tissues. Although methods exist that generate synthetic wMRI from...
master thesis 2021
document
Sabidussi, E. R. (author), Klein, S. (author), Caan, M. W.A. (author), Bazrafkan, S. (author), den Dekker, A. J. (author), Sijbers, J. (author), Niessen, W.J. (author), Poot, D.H.J. (author)
In this paper, we propose the use of Recurrent Inference Machines (RIMs) to perform T<sub>1</sub> and T<sub>2</sub> mapping. The RIM is a neural network framework that learns an iterative inference process based on the signal model, similar to conventional statistical methods for quantitative MRI (QMRI), such as the Maximum Likelihood...
journal article 2021
document
van Hespen, K.M. (author)
Carotid atherosclerotic plaque rupture is a major cause in ischemic strokes. The luminal narrowing caused by the growing of the plaque has been commonly used for identification of plaque rupture risk. However, there have been signs that plaque composition is also important in the identification of plaque rupture risk. Quantitative Magnetic...
master thesis 2016
document
Bladt, P. (author), Van Steenkiste, G. (author), Ramos-Llordén, G. (author), den Dekker, A.J. (author), Sijbers, J. (author)
Quantification of the spin-lattice relaxation time, T<sub>1</sub>, of tissues is important for characterization of tissues in clinical magnetic resonance imaging (MRI). In T<sub>1</sub> mapping, T<sub>1</sub> values are estimated from a set of T<sub>1</sub>-weighted MRI images. Due to the limited spatial resolution of the T<sub>1</sub>...
conference paper 2016
Searched for: subject%3A%22quantitative%255C%2BMRI%22
(1 - 13 of 13)