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Highly efficient MRI through multi-shot echo planar imaging
[article]
2019
arXiv
pre-print
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2019
Wavelets and Sparsity XVIII
unpublished
doi:10.1117/12.2527183 fatcat:f325pflvbba5rbsvxryciuy2ny
doi:10.1117/12.2527183 fatcat:f325pflvbba5rbsvxryciuy2ny
Multi-shot echo planar imaging (msEPI) is a promising approach to achieve high in-plane resolution with high sampling efficiency and low T2* blurring. ...
We improve the acquisition efficiency and reconstruction quality by incorporating simultaneous multi-slice acquisition and virtual-coil reconstruction into the BUDA technique. ...
of Neurological Disorders and Stroke, Grant/Award Number: K23 NS096056; National Institute of Mental Health, Grant/Award Number: R01 MH116173 and R24 MH106096; Center for Biomedical Imaging, Grant/Award ...
arXiv:1908.00983v1
fatcat:aku6w4ccuzchjcpxdilgotvmpe
Highly Accelerated Multishot EPI through Synergistic Machine Learning and Joint Reconstruction
[article]
2019
arXiv
pre-print
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Purpose: To introduce a combined machine learning (ML) and physics-based image reconstruction framework that enables navigator-free, highly accelerated multishot echo planar imaging (msEPI), and demonstrate ...
These variations are then included in a Joint Virtual Coil Sensitivity Encoding (JVC-SENSE) reconstruction to utilize data from all shots and improve upon the ML solution. ...
Given the phase of each shot, we then perform a Joint Virtual Coil Sensitivity Encoding (JVC-SENSE) reconstruction where we utilize the k-space data from all shots as well as virtual coil concept (19) ...
arXiv:1808.02814v3
fatcat:rvfaxqfbpnc27hd2qhuwomuj44
Advances in Fast Vessel-Wall Magnetic Resonance Imaging Using High-Density Coil Arrays
2021
Investigative Magnetic Resonance Imaging
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This review analyzes fast magnetic resonance imaging from the perspective of accelerated algorithms for vessel wall imaging and demonstrates the need for effective algorithms for signal acquisition using ...
High-resolution vessel wall magnetic resonance imaging is generally recognized as a non-invasive and panoramic method for the evaluation of arterial plaque; however, this method requires improved signal-tonoise ...
Carotid Coil Arrays Phased-array neck coils are highly sensitive for highresolution imaging of carotid arteries due to their small size and shallow location (101) (102) (103) . ...
doi:10.13104/imri.2021.25.4.229
fatcat:de3fknxzuvf5zee6lumqgo4l6a
Physics-based Reconstruction Methods for Magnetic Resonance Imaging
[article]
2021
arXiv
pre-print
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image reconstruction -- addressing both shortcomings of conventional MRI at the same time. ...
By formulating image reconstruction as an inverse problem, quantitative maps of the underlying physical parameters can then be extracted directly from efficiently acquired k-space signals without intermediate ...
Tobias Block for the radial spin-echo sequence, and Dr. Christian Holme for help with the scripts. ...
arXiv:2010.01403v3
fatcat:dwd2abbjgvhpvh4c63lmmyaouy
Simultaneous multislice (SMS) imaging techniques
2015
Magnetic Resonance in Medicine
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Unlike inplane parallel imaging this can have only a marginal intrinsic signalto-noise ratio penalty, and the full acceleration is attainable at fixed echo time, as is required for many echo planar imaging ...
receiver coils. ...
ACKNOWLEDGMENTS The authors thank David Feinberg, Christine Guo, Kawin Setsompop, and Daniel St€ ab for helpful comments. ...
doi:10.1002/mrm.25897
pmid:26308571
pmcid:PMC4915494
fatcat:mp5hkqrqajdkbodgwm7zv7lufy
Robust Autocalibrated Structured Low-Rank EPI Ghost Correction
[article]
2020
arXiv
pre-print
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, diffusion-encoded brain imaging, and cardiac imaging). ...
Results: RAC-LORAKS is demonstrated to have good ghost elimination performance compared to state-of-the-art methods in several complicated EPI acquisition scenarios (including gradient-echo brain imaging ...
Computation for some of the work described in this paper was supported by the University of Southern California's Center for High-Performance Computing (http://hpcc.usc.edu/). ...
arXiv:1907.13261v3
fatcat:j6bxcuwlovdu7ldcq3c5mt4hmm
Pushing spatial and temporal resolution for functional and diffusion MRI in the Human Connectome Project
2013
NeuroImage
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These are: 1) resting state functional MR imaging (rfMRI) which uses correlations in the temporal fluctuations in an fMRI time series to deduce 'functional connectivity'; 2) diffusion imaging (dMRI), which ...
provides the input for tractography algorithms used for the reconstruction of the complex axonal fiber architecture; and 3) task based fMRI (tfMRI), which is employed to identify functional parcellation ...
Acknowledgments The work reported in this article was supported by the Human Connectome Project (1U54MH091657) from the 16 Institutes and Centers of the National Institutes of Health that support the NIH Blueprint for ...
doi:10.1016/j.neuroimage.2013.05.012
pmid:23702417
pmcid:PMC3740184
fatcat:wajdgqkztvg43eyxxovlxlshky
Clinical Potential of a New Approach to MRI Acceleration
2019
Scientific Reports
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geometry changes without the need for recalibration or additional field mapping, (3) contrast generation, as in turbo spin echo. ...
Cartesian-FRONSAC improves accelerated imaging while retaining the robustness and flexibility critical to real clinical use. ...
We would like to thank Stefan Kroboth for his help imaging with the Freiburg nonlinear gradient setup and Dr. ...
doi:10.1038/s41598-018-36802-5
pmid:30760731
pmcid:PMC6374397
fatcat:mwzf6xqclzblbezuhxvph25zwe
Two-dimensional-NGC-SENSE-GRAPPA for fast, ghosting-robust reconstruction of in-plane and slice-accelerated blipped-CAIPI echo planar imaging
2016
Magnetic Resonance in Medicine
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INTRODUCTION Simultaneous multislice (SMS) echo planar imaging (EPI) reconstruction algorithms suffer from interactions with EPI ghosting. ...
Scenario 2: Read-Out Segmented Diffusion Imaging In the scenarios above, the ACS data were either not distortion matched or suffered from intersegment phase instabilities, which disadvantaged 2D-SENSE-GRAPPA ...
doi:10.1002/mrm.26179
pmid:26932565
pmcid:PMC5324691
fatcat:zj5wjcspcvei7mqd7dkqul7rvq
SMASH, SENSE, PILS, GRAPPA
2004
Topics in Magnetic Resonance Imaging (TMRI)
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and drawbacks with regard to a successful image reconstruction. ...
Within the last 3 years, parallel imaging methods have become commercially available, and therefore are now available for a broad clinical use. ...
Medical Solutions, Erlangen, Germany and Jianmin Wang for their helpful discussions and support. ...
doi:10.1097/01.rmr.0000136558.09801.dd
pmid:15548953
fatcat:xsclkbglajf7vju5rjba2hdvda
Massively parallel MRI detector arrays
2013
Journal of magnetic resonance (San Diego, Calif. 1997 : Print)
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accelerated imaging with the resulting highly parallel arrays. ...
coils to perform image encoding. ...
Wiggins, now of NYU, for their contribution to forming our understanding of massively parallel arrays and receiver configurations and Florian Wiesinger of ETH for results modeling brain arrays and the ...
doi:10.1016/j.jmr.2013.02.001
pmid:23453758
pmcid:PMC3740730
fatcat:xmuvnjmnnjhvxmcr6ynsi5t6zu
Simultaneous and inherent correction of B0 and eddy-current induced distortions in high-resolution diffusion MRI using reversed polarity gradients and multiplexed sensitivity encoding (RPG-MUSE)
2018
NeuroImage
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This report presents a novel technique, termed RPG-MUSE, for achieving distortion-free high-resolution diffusion MRI by integrating reversed polarity gradients (RPG) into the multi-shot echo planar imaging ...
In diffusion MRI (dMRI), static magnetic field (B0) inhomogeneity and time varying gradient eddy currents induce spatial distortions in reconstructed images. ...
However, the use of fast imaging methods such as echo-planar imaging (EPI) [Turner et al., 1990] and large diffusion-weighting gradients induce geometric distortions in dMRI. ...
doi:10.1016/j.neuroimage.2018.09.055
pmid:30243955
pmcid:PMC6631373
fatcat:tfeqwwk6b5fkndh6nclcwp3dby
Properties of a 2D fat navigator for prospective image domain correction of nodding motion in brain MRI
2014
Magnetic Resonance in Medicine
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One of the possible MR imaging contrasts is the ability to visualize diffusion processes. ...
The method, referred to as diffusion---weighted imaging, is one of the most common clinical contrasts but is prone to artifacts and is challenging to acquire at high resolutions. ...
Echo Planar Imaging Echo Planar Imaging (EPI) is a fast image acquisition technique that was invented in 1977 by Sir Peter Mansfield (4) . ...
doi:10.1002/mrm.25234
pmid:24733744
fatcat:edimpyjaafad7bnjtfem4datrm
Advances in diffusion MRI acquisition and processing in the Human Connectome Project
2013
NeuroImage
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In this overview, we focus on diffusion MRI (dMRI) and the structural connectivity aspect of the project. ...
A consortium of HCP investigators will study a population of 1200 healthy adults using multiple imaging modalities, along with extensive behavioral and genetic data. ...
Computations were performed using the facilities of the Washington University Center for High Performance Computing, which were partially provided through grant NCRR 1S10RR022984-01A1. ...
doi:10.1016/j.neuroimage.2013.05.057
pmid:23702418
pmcid:PMC3720790
fatcat:3e3hkqbzdjcmtnx4anwqp3swvi
Parallel Imaging Techniques in Functional MRI
2004
Topics in Magnetic Resonance Imaging (TMRI)
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It has been applied to reduce the distortions caused by the length of the echo-planar imaging readout, diminution of the gradient-related acoustic noise, as a means to increase acquisition speed or to ...
Originally developed for increased scanning velocity in cardiac imaging, parallel imaging (PI) techniques have recently also been applied for the reduction of artifacts in single-shot techniques. ...
Using their coil, no resonance peak split was observed and the coils could be tuned and matched individually for each subject. ...
doi:10.1097/01.rmr.0000142829.79609.d4
pmid:15548956
fatcat:g4desex3zffwnhs7ldrqh6teyi
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