Articles with "mrsi" as a keyword



ORYX‐MRSI: A fully‐automated open‐source software for proton magnetic resonance spectroscopic imaging data analysis

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Published in 2022 at "International Journal of Imaging Systems and Technology"

DOI: 10.1002/ima.22748

Abstract: Proton magnetic resonance spectroscopic imaging (1H‐MRSI) provides a noninvasive, spatially resolved evaluation of brain metabolism. However, there are some limitations of 1H‐MRSI preventing its wider use in the clinics, including the spectral quality issues, partial… read more here.

Keywords: magnetic resonance; proton magnetic; resonance spectroscopic; oryx mrsi ... See more keywords

Improved signal‐to‐noise performance of MultiNet GRAPPA 1H FID MRSI reconstruction with semi‐synthetic calibration data

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Published in 2022 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.29314

Abstract: To further develop MultiNet GRAPPA, a neural‐network‐based reconstruction, for lower SNR proton MRSI (1H MRSI) data using adapted undersampling schemes and improved training sets. read more here.

Keywords: multinet grappa; reconstruction; mrsi; improved signal ... See more keywords

Proton‐free induction decay MRSI at 7 T in the human brain using an egg‐shaped modified rosette K‐space trajectory

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Published in 2024 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.30368

Abstract: Proton (1H)‐MRSI via spatial‐spectral encoding poses high demands on gradient hardware at ultra‐high fields and high‐resolutions. Rosette trajectories help alleviate these problems, but at reduced SNR‐efficiency because of their k‐space densities not matching any desired… read more here.

Keywords: proton free; modified rosette; mrsi; space ... See more keywords

Atlas‐based GABA mapping with 3D MEGA‐MRSI: Cross‐correlation to single‐voxel MRS

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Published in 2020 at "NMR in Biomedicine"

DOI: 10.1002/nbm.4275

Abstract: The purpose of this work is to develop and validate a new atlas‐based metabolite quantification pipeline for edited magnetic resonance spectroscopic imaging (MEGA‐MRSI) that enables group comparisons of brain structure‐specific GABA levels. By using brain… read more here.

Keywords: mega mrsi; mrsi; correlation; voxel ... See more keywords

Comparison of Low‐Rank Denoising Methods for Dynamic Deuterium MRSI at 7 T

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Published in 2025 at "Nmr in Biomedicine"

DOI: 10.1002/nbm.70125

Abstract: Dynamic deuterium (2H)‐MRSI enables mapping of metabolic fluxes in vivo, but its sensitivity is hampered by the low 2H gyromagnetic ratio and 2H‐labelled metabolite concentrations. Low‐rank denoising can enhance MRSI sensitivity by separating signal from… read more here.

Keywords: spin svd; rank denoising; mrsi; svd ... See more keywords

From a Voxel to Maps: A Comparative Study of sLASER SVS and 3D-CRT-FID-MRSI at 3 T and 7 T.

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Published in 2025 at "NMR in biomedicine"

DOI: 10.1002/nbm.70185

Abstract: Magnetic resonance spectroscopy (MRS) enables noninvasive assessment of brain metabolites and is commonly implemented using single‐voxel spectroscopy (SVS) or magnetic resonance spectroscopic imaging (MRSI). This study directly compares the reproducibility of single‐voxel sLASER and 3D‐Concentric… read more here.

Keywords: fid mrsi; spectroscopy; voxel; mrsi ... See more keywords

Separation of Metabolites and Macromolecules for Short-TE 1H-MRSI Using Learned Component-Specific Representations

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Published in 2021 at "IEEE transactions on medical imaging"

DOI: 10.1109/tmi.2020.3048933

Abstract: Short-echo-time (TE) proton magnetic resonance spectroscopic imaging (MRSI) allows for simultaneously mapping a number of molecules in the brain, and has been recognized as an important tool for studying in vivo biochemistry in various neuroscience… read more here.

Keywords: separation metabolites; metabolites macromolecules; mrsi; component specific ... See more keywords

Glutamine Metabolism and Metabolic Profiling Using 7 T CRT‐FID MRSI in Focal Epilepsy

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Published in 2025 at "European Journal of Neurology"

DOI: 10.1111/ene.70343

Abstract: Approximately one‐third of people with epilepsy (PWE) remain drug‐resistant. In these cases, surgical resection of the epileptogenic zone may significantly reduce or eliminate seizures. Surgery necessitates precise delineation of the epileptogenic zone (EZ) which proves… read more here.

Keywords: glutamine metabolism; metabolic profiling; mrsi; focal epilepsy ... See more keywords

Immune System-Related Changes in Preclinical GL261 Glioblastoma under TMZ Treatment: Explaining MRSI-Based Nosological Imaging Findings with RT-PCR Analyses

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Published in 2021 at "Cancers"

DOI: 10.3390/cancers13112663

Abstract: Simple Summary Glioblastoma (GB) is an aggressive brain tumour with poor survival. Tumour microenvironment is a key element in GB evolution and response to therapy. We assessed presence and phenotypes of microglia/macrophages in preclinical GL261-GB… read more here.

Keywords: preclinical gl261; system; mrsi; immune system ... See more keywords

In Vivo Renal Lipid Quantification by Accelerated Magnetic Resonance Spectroscopic Imaging at 3T: Feasibility and Reliability Study

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Published in 2022 at "Metabolites"

DOI: 10.3390/metabo12050386

Abstract: A reliable and practical renal-lipid quantification and imaging method is needed. Here, the feasibility of an accelerated MRSI method to map renal fat fractions (FF) at 3T and its repeatability were investigated. A 2D density-weighted… read more here.

Keywords: renal lipid; lipid quantification; feasibility; mrsi ... See more keywords