Articles with "multi echo" as a keyword



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Contribution of the multi-echo approach in accelerated functional magnetic resonance imaging multiband acquisition.

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Published in 2021 at "Human brain mapping"

DOI: 10.1002/hbm.25698

Abstract: We wanted to verify the effect of combining multi-echo (ME) functional magnetic resonance imaging (fMRI) with slice acceleration in simultaneous multi-slice acquisition. The aim was to shed light on the benefits of multiple echoes for… read more here.

Keywords: resonance imaging; multi echo; magnetic resonance; acceleration ... See more keywords
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Performance of a fast and high‐resolution multi‐echo spin‐echo sequence for prostate T2 mapping across multiple systems

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Published in 2018 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.26816

Abstract: To evaluate the performance of a multi‐echo spin‐echo sequence with k‐t undersampling scheme (k‐t T2) in prostate cancer. read more here.

Keywords: echo spin; multi echo; performance; echo sequence ... See more keywords
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3D‐multi‐echo radial imaging of 23Na (3D‐MERINA) for time‐efficient multi‐parameter tissue compartment mapping

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Published in 2018 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.26848

Abstract: This work demonstrates a 3D radial multi‐echo acquisition scheme for time‐efficient sodium (23Na) MR‐signal acquisition and analysis. Echo reconstructions were used to produce signal‐to‐noise ratio (SNR)‐enhanced 23Na‐images and parameter maps of the biexponential observed transverse… read more here.

Keywords: multi; radial imaging; multi echo; time ... See more keywords
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Multi‐echo GRE‐based conductivity imaging using Kalman phase estimation method

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Published in 2019 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.27376

Abstract: To obtain in vivo electrical conductivity images from multi‐echo gradient‐echo (mGRE) sequence using a zero‐TE phase extrapolation algorithm based on the Kalman method. read more here.

Keywords: phase; multi echo; conductivity; echo gre ... See more keywords
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Systematic assessment of multi‐echo dynamic susceptibility contrast MRI using a digital reference object

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Published in 2019 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.27914

Abstract: Brain tumor dynamic susceptibility contrast (DSC) MRI is adversely impacted by T1 and T2∗ contrast agent leakage effects that result in inaccurate hemodynamic metrics. While multi‐echo acquisitions remove T1 leakage effects, there is no consensus… read more here.

Keywords: contrast; multi echo; susceptibility contrast; mri ... See more keywords
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Navigator‐based reacquisition and estimation of motion‐corrupted data: Application to multi‐echo spin echo for carotid wall MRI

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Published in 2019 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.28063

Abstract: To assess whether artifacts in multi‐slice multi‐echo spin echo neck imaging, thought to be caused by brief motion events such as swallowing, can be corrected by reacquiring corrupted central k‐space data and estimating the remainder… read more here.

Keywords: echo spin; spin echo; multi echo;
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Artificial neural network for multi‐echo gradient echo–based myelin water fraction estimation

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Published in 2020 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.28407

Abstract: To demonstrate robust myelin water fraction (MWF) mapping using an artificial neural network (ANN) with multi‐echo gradient‐echo (GRE) signal. read more here.

Keywords: neural network; multi echo; water fraction; echo gradient ... See more keywords
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Improved multi‐echo gradient echo myelin water fraction mapping using complex‐valued neural network analysis

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Published in 2022 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.29192

Abstract: Previously, an artificial neural network method was introduced to estimate quantitative myelin water fraction (MWF) using multi‐echo gradient‐echo data. However, the fiber orientation of white matter with respect to B0 could bias the quantification of… read more here.

Keywords: multi echo; neural network; myelin water; water fraction ... See more keywords
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Multi‐echo MR thermometry in the upper leg at 7 T using near‐harmonic 2D reconstruction for initialization

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Published in 2023 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.29591

Abstract: The aim of this work is the development of a thermometry method to measure temperature increases in vivo, with a precision and accuracy sufficient for validation against thermal simulations. Such an MR thermometry model would… read more here.

Keywords: multi echo; thermometry; echo thermometry; thermometry upper ... See more keywords
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Improved MR Temperature Imaging at 0.5T Using View-Sharing Accelerated Multi-Echo Thermometry for MRgLITT.

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Published in 2023 at "NMR in biomedicine"

DOI: 10.1002/nbm.4933

Abstract: PURPOSE To improve the temperature monitoring precision using multi-echo proton resonance frequency shift-based thermometry with view-sharing acceleration for MR-guided laser interstitial thermal therapy (MRgLITT) on a 0.5T low-field MR system. METHODS Both precision and speed… read more here.

Keywords: multi echo; thermometry; view sharing; mrglitt ... See more keywords
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Liver iron quantification in children and young adults: comparison of a volumetric multi-echo 3-D Dixon sequence with conventional 2-D T2* relaxometry

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Published in 2022 at "Pediatric Radiology"

DOI: 10.1007/s00247-022-05352-4

Abstract: Magnetic resonance imaging (MRI)-based liver iron quantification is the standard of care to guide chelation therapy in children at risk of hemochromatosis. T2* relaxometry is the most widely used technique but requires third-party software for… read more here.

Keywords: multi echo; liver iron; relaxometry; echo dixon ... See more keywords