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Improved MRSI with field inhomogeneity compensation

Ildar Khalidov, Dimitri Van De Ville, Mathews Jacob, François Lazeyras, Michael Unser, Joseph M. Reinhardt, Josien P. W. Pluim
<span title="2006-03-02">2006</span> <i title="SPIE"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/ha25cznnjncxtjoykhsg6fz5ly" style="color: black;">Medical Imaging 2006: Image Processing</a> </i> &nbsp;
Our algorithm, named B-SLIM, takes into account the the measured field inhomogeneity map, which contains both the scanner's main field inhomogeneity and the object-dependent magnetic susceptibility effects  ...  The method is implemented and tested both with synthetic and physical two-compartment phantom data. The results demonstrate significant performance improvement over the SLIM technique.  ...  To understand the improvements that we get when comparing to the standard SLIM method, we also compute the spectrum for compartment 2 without inhomogeneity compensation.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1117/12.651868">doi:10.1117/12.651868</a> <a target="_blank" rel="external noopener" href="https://dblp.org/rec/conf/miip/KhalidovVJLU06.html">dblp:conf/miip/KhalidovVJLU06</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/xgkgjqt35zfqdevuppbppysz4a">fatcat:xgkgjqt35zfqdevuppbppysz4a</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170813020246/http://bigwww.epfl.ch/publications/khalidov0602.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/c1/bf/c1bf368197ca5260f5ea42cf3b10a042ecd0245e.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1117/12.651868"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> Publisher / doi.org </button> </a>

A sparse reconstruction algorithm for parallel spiral MR spectroscopic imaging

Ramin Eslami, Mathews Jacob
<span title="">2011</span> <i title="IEEE"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/qcepwfkflvg5toaa6fh2alj3b4" style="color: black;">2011 IEEE International Symposium on Biomedical Imaging: From Nano to Macro</a> </i> &nbsp;
We demonstrate significant improvement for in vivo brain results when compared to classical regularized SENSE MRSI reconstruction.  ...  In our sparse reconstruction approach, we minimize the total variation and norm of the compartmentalized MRSI data in order to reduce noise, inhomogeneity distortions, and spectral leakage.  ...  The 3-D reconstruction scheme also enables us to compensate for field inhomogeneity and losses by incorporating their estimates from water reference data.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/isbi.2011.5872362">doi:10.1109/isbi.2011.5872362</a> <a target="_blank" rel="external noopener" href="https://dblp.org/rec/conf/isbi/EslamiJ11.html">dblp:conf/isbi/EslamiJ11</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/v2ybh3qgzveuli3vrscab7gjpq">fatcat:v2ybh3qgzveuli3vrscab7gjpq</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170809065750/http://user.engineering.uiowa.edu/~jcb/Papers/ISBI11_5.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/af/0f/af0f7df7b44b6bd45b149228f16a7d5cf82100d5.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/isbi.2011.5872362"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> ieee.com </button> </a>

BSLIM: Spectral Localization by Imaging With Explicit $B_{0}$ Field Inhomogeneity Compensation

I. Khalidov, D. Van De Ville, M. Jacob, F. Lazeyras, M. Unser
<span title="">2007</span> <i title="Institute of Electrical and Electronics Engineers (IEEE)"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/yhnt2pif75h2bmnnmdg7m6nlc4" style="color: black;">IEEE Transactions on Medical Imaging</a> </i> &nbsp;
Therefore, we propose BSLIM as an extension of SLIM with field inhomogeneity compensation.  ...  Index Terms-Chemical shift imaging, constrained reconstruction, magnetic field inhomogeneity, magnetic resonance spectroscopy imaging (MRSI).  ...  Difficulties with low spatial resolution and field inhomogeneity have limited the utility of MRSI for in vivo studies.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/tmi.2007.897385">doi:10.1109/tmi.2007.897385</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/17649912">pmid:17649912</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/6pn6k52a7fg5nlwzwliblq2yhy">fatcat:6pn6k52a7fg5nlwzwliblq2yhy</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20110822021020/http://miplab.epfl.ch/pub/khalidov0702.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/42/d0/42d0484118739c5e94d0fe6679b3651c2dab7b4f.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/tmi.2007.897385"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> ieee.com </button> </a>

Multislice 1H MRSI of the human brain at 7 T using dynamic B0 and B1 shimming

Vincent O. Boer, Dennis W. J. Klomp, Christoph Juchem, Peter R. Luijten, Robin A. de Graaf
<span title="2011-12-12">2011</span> <i title="Wiley"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/34p2n5u2vjfgrf7j2rmkmfhogu" style="color: black;">Magnetic Resonance in Medicine</a> </i> &nbsp;
Together with a low-power water and lipid suppression sequence and pulse-acquire spectroscopic imaging, a multi-slice MRSI sequence is shown to be feasible at 7T.  ...  inhomogeneity.  ...  However, close to the nasal cavity, large residual B 0 inhomogeneities remained which could not be compensated with the third order spherical harmonic fields.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1002/mrm.23288">doi:10.1002/mrm.23288</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/22162089">pmid:22162089</a> <a target="_blank" rel="external noopener" href="https://pubmed.ncbi.nlm.nih.gov/PMC3306521/">pmcid:PMC3306521</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/4uxmdo7t3vclxn2jzssxnmwttq">fatcat:4uxmdo7t3vclxn2jzssxnmwttq</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20191127090801/http://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC3306521&amp;blobtype=pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/09/46/0946811ac8368441f8d6b1e76551d2d8a242d2d0.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1002/mrm.23288"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> wiley.com </button> </a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3306521" title="pubmed link"> <button class="ui compact blue labeled icon button serp-button"> <i class="file alternate outline icon"></i> pubmed.gov </button> </a>

Data-driven MRSI spectral localization using non-cartesian sampling trajectories

Jeffrey Kasten, Francois Lazeyras, Dimitri Van De Ville
<span title="">2013</span> <i title="IEEE"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/qcepwfkflvg5toaa6fh2alj3b4" style="color: black;">2013 IEEE 10th International Symposium on Biomedical Imaging</a> </i> &nbsp;
the raw MRSI data.  ...  The ability to non-invasively visualize spatially-localized maps of metabolite concentrations in vivo as afforded by Magnetic Resonance Spectroscopic Imaging (MRSI) is an attractive prospect in clinically-focused  ...  Solving for Compensated Components With all the elements now in place, we can solve for the static field inhomogeneity compensated components in the following way.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/isbi.2013.6556635">doi:10.1109/isbi.2013.6556635</a> <a target="_blank" rel="external noopener" href="https://dblp.org/rec/conf/isbi/KastenLV13.html">dblp:conf/isbi/KastenLV13</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/a5c4piebarfh7ow2l57knqi3w4">fatcat:a5c4piebarfh7ow2l57knqi3w4</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170706034810/http://miplab.epfl.ch/pub/kasten1301.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/f2/31/f231b7f4fdd4e11d20baec38545e254367234fb5.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/isbi.2013.6556635"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> ieee.com </button> </a>

Sparse spectral deconvolution algorithm for noncartesian MR spectroscopic imaging

Sampada Bhave, Ramin Eslami, Mathews Jacob
<span title="2013-03-13">2013</span> <i title="Wiley"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/34p2n5u2vjfgrf7j2rmkmfhogu" style="color: black;">Magnetic Resonance in Medicine</a> </i> &nbsp;
Sparse spectral regularization is used to minimize noise amplification associated with deconvolution.  ...  A spiral MRSI sequence that heavily oversamples the central k-space regions is used to acquire the MRSI data.  ...  ACKNOWLEDGMENT The authors thank the anonymous reviewers, whose comments have considerably improved the quality of the manuscript.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1002/mrm.24693">doi:10.1002/mrm.24693</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/23494949">pmid:23494949</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/7isp2svs2bgypbr6akpbeaw6tu">fatcat:7isp2svs2bgypbr6akpbeaw6tu</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170808144101/http://www.indiana.edu/~mri/journal_club/2014%20Program_files/spectroscopy%20methodology%20-%202014-vol71-MRM.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/69/ba/69ba59066d8cb3cb7638a6d755b91f097cd5755a.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1002/mrm.24693"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> wiley.com </button> </a>

Data-Driven MRSI Spectral Localization Via Low-Rank Component Analysis

Jeffrey Kasten, Franois Lazeyras, Dimitri Van De Ville
<span title="">2013</span> <i title="Institute of Electrical and Electronics Engineers (IEEE)"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/yhnt2pif75h2bmnnmdg7m6nlc4" style="color: black;">IEEE Transactions on Medical Imaging</a> </i> &nbsp;
As additional a priori information, our approach relies only upon a measured field inhomogeneity map at high spatial resolution.  ...  Magnetic resonance spectroscopic imaging (MRSI) is a powerful tool capable of providing spatially localized maps of metabolite concentrations.  ...  The authors would also like to thank the anonymous reviewers, whose insightful comments significantly improved the quality of the manuscript.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/tmi.2013.2266259">doi:10.1109/tmi.2013.2266259</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/23744674">pmid:23744674</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/uhzipyxbg5elpgx6nclhor3zca">fatcat:uhzipyxbg5elpgx6nclhor3zca</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170815235438/https://infoscience.epfl.ch/record/191113/files/kasten1302.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/a3/85/a3855e68ce62a0822b1021cec965d34705e37c9e.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/tmi.2013.2266259"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> ieee.com </button> </a>

Robust Reconstruction of MRSI Data Using a Sparse Spectral Model and High Resolution MRI Priors

Ramin Eslami, Mathews Jacob
<span title="">2010</span> <i title="Institute of Electrical and Electronics Engineers (IEEE)"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/yhnt2pif75h2bmnnmdg7m6nlc4" style="color: black;">IEEE Transactions on Medical Imaging</a> </i> &nbsp;
The constrained model makes the problem better conditioned in regions with significant field inhomogeneity, thus enabling the recovery even in regions with high field map variations.  ...  We use high resolution, 3-D estimate of the magnetic field inhomogeneity map to generate an accurate forward model, while a high resolution estimate of the fat/water boundary is used to minimize spectral  ...  ACKNOWLEDGEMENT The authors thank the anonymous reviewers for their valuable comments, which significantly improved the quality of the manuscript.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/tmi.2010.2046673">doi:10.1109/tmi.2010.2046673</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/20363676">pmid:20363676</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/qmhrz4ckvffrbe57674nzj43h4">fatcat:qmhrz4ckvffrbe57674nzj43h4</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20100702200816/http://cbig.rochester.edu/Papers/TMI10.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/3d/5e/3d5e4bee5083814663cb466eb835019adcb4c858.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/tmi.2010.2046673"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> ieee.com </button> </a>

Improved Model-Based Magnetic Resonance Spectroscopic Imaging

Mathews Jacob, Xiaoping Zhu, Andreas Ebel, Norbert Schuff, Zhi-Pei Liang
<span title="">2007</span> <i title="Institute of Electrical and Electronics Engineers (IEEE)"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/yhnt2pif75h2bmnnmdg7m6nlc4" style="color: black;">IEEE Transactions on Medical Imaging</a> </i> &nbsp;
To compensate for the artifacts resulting from field inhomogeneity, we estimate the field map using alternate scans and use it in the reconstruction.  ...  Index Terms-Constrained reconstruction, inhomogeneity compensation, prior information, spectroscopic imaging.  ...  ACKNOWLEDGMENT The authors would like to thank the anonymous reviewers for their valuable comments which helped greatly in improving the quality of the paper.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/tmi.2007.898583">doi:10.1109/tmi.2007.898583</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/17948722">pmid:17948722</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/rkltqk3xnjhc7fnkub6al3mt7i">fatcat:rkltqk3xnjhc7fnkub6al3mt7i</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170829235400/http://user.engineering.uiowa.edu/~jcb/Papers/TMI07.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/97/e0/97e00769f543947218ee3b455dae4ee3223de848.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/tmi.2007.898583"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> ieee.com </button> </a>

Imaging based magnetic resonance spectroscopy (MRS) localization for quantitative neurochemical analysis and cerebral metabolism studies

Phil Lee, Peter Adany, In-Young Choi
<span title="">2017</span> <i title="Elsevier BV"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/5r4gfkeau5adlcnppdgahdnr2e" style="color: black;">Analytical Biochemistry</a> </i> &nbsp;
inhomogeneity corrections, the use of multiple receiver coils, and prospective optimization of data acquisition.  ...  technical frontiers of image-based MRS localization techniques that overcome the limitations of SLIM through the development and implementation of various new strategies, including incorporation of magnetic field  ...  Improvements in localization by non-Fourier reconstruction have focused on the incorporation of structural information from high resolution MRI, compensation for B1 and B0 inhomogeneities, and techniques  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.ab.2017.01.007">doi:10.1016/j.ab.2017.01.007</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/28082217">pmid:28082217</a> <a target="_blank" rel="external noopener" href="https://pubmed.ncbi.nlm.nih.gov/PMC5469694/">pmcid:PMC5469694</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/w4bjdslun5ewviqfwzlazcuf3i">fatcat:w4bjdslun5ewviqfwzlazcuf3i</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20200210192741/http://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC5469694&amp;blobtype=pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/8b/bf/8bbffb972c2757d707096e62bf505292af3b93c9.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.ab.2017.01.007"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> elsevier.com </button> </a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5469694" title="pubmed link"> <button class="ui compact blue labeled icon button serp-button"> <i class="file alternate outline icon"></i> pubmed.gov </button> </a>

Whole-slice mapping of GABA and GABA+ at 7T via adiabatic MEGA-editing, real-time instability correction, and concentric circle readout

Philipp Moser, Lukas Hingerl, Bernhard Strasser, Michal Považan, Gilbert Hangel, Ovidiu C. Andronesi, Andre van der Kouwe, Stephan Gruber, Siegfried Trattnig, Wolfgang Bogner
<span title="2018-09-19">2018</span> <i title="Elsevier BV"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/sa477uo7lveh7hchpikpixop5u" style="color: black;">NeuroImage</a> </i> &nbsp;
Our approach exploits the advantages of edited-MRSI at 7T while tackling challenges that arise with ultra-high-field-scans.  ...  Our sequence capitalizes on the benefits of ultra-high-field MRSI while successfully mitigating the challenges related to B0/B1+ inhomogeneities, prolonged scan times, and motion/scanner instability artifacts  ...  Ultra-high-field (7T) MRSI MRSI at ultra-high-field (UHF) benefits from increased SNR and higher spectral resolution (Moser et al., 2012) , which can be translated into higher spatial resolution to improve  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.neuroimage.2018.09.039">doi:10.1016/j.neuroimage.2018.09.039</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/30243974">pmid:30243974</a> <a target="_blank" rel="external noopener" href="https://pubmed.ncbi.nlm.nih.gov/PMC7212034/">pmcid:PMC7212034</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/2krt5f4c6vdrlirubpsqva46ye">fatcat:2krt5f4c6vdrlirubpsqva46ye</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20210526120647/http://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC7212034&amp;blobtype=pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/97/7b/977b7e2954bd7029e1ad62b9fa275aae9b3c2f41.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.neuroimage.2018.09.039"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="unlock alternate icon" style="background-color: #fb971f;"></i> elsevier.com </button> </a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7212034" title="pubmed link"> <button class="ui compact blue labeled icon button serp-button"> <i class="file alternate outline icon"></i> pubmed.gov </button> </a>

Whole-brain quantitative mapping of metabolites using short echo three-dimensional proton MRSI

Angèle Lecocq, Yann Le Fur, Andrew A. Maudsley, Arnaud Le Troter, Sulaiman Sheriff, Mohamad Sabati, Maxime Donnadieu, Sylviane Confort-Gouny, Patrick J. Cozzone, Maxime Guye, Jean-Philippe Ranjeva
<span title="2014-11-28">2014</span> <i title="Wiley"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/sndsq6zlt5g4hchv4s4febk4tm" style="color: black;">Journal of Magnetic Resonance Imaging</a> </i> &nbsp;
An additional factor that affects spectral quality is non-ideal RF pulse profiles and inhomogeneities, particularly at higher field strengths, combined with the effect of chemicalshift differences, which  ...  Purpose-To improve the extent over which whole brain quantitative 3D-MRSI maps can be obtained and be used to explore brain metabolism in a population of healthy volunteers.  ...  The first step used to improve reliability of large brain coverage with 3D-MRSI at high field was to correct for radiofrequency field inhomogeneities and B 0 inhomogeneities responsible for spatial variations  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1002/jmri.24809">doi:10.1002/jmri.24809</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/25431032">pmid:25431032</a> <a target="_blank" rel="external noopener" href="https://pubmed.ncbi.nlm.nih.gov/PMC4447620/">pmcid:PMC4447620</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/vmqwe2wx3jf45o2qcha3tlc6tq">fatcat:vmqwe2wx3jf45o2qcha3tlc6tq</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20200206163509/http://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC4447620&amp;blobtype=pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/29/09/2909f99900d9ac72b95c29cc4792469a2d8b8489.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1002/jmri.24809"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> wiley.com </button> </a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4447620" title="pubmed link"> <button class="ui compact blue labeled icon button serp-button"> <i class="file alternate outline icon"></i> pubmed.gov </button> </a>

Spin-echo magnetic resonance spectroscopic imaging at 7 T with frequency-modulated refocusing pulses

He Zhu, Brian J. Soher, Ronald Ouwerkerk, Michael Schär, Peter B. Barker
<span title="2012-06-12">2012</span> <i title="Wiley"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/34p2n5u2vjfgrf7j2rmkmfhogu" style="color: black;">Magnetic Resonance in Medicine</a> </i> &nbsp;
Two approaches to high-resolution SENSE-encoded magnetic resonance spectroscopic imaging (MRSI) of the human brain at 7 Tesla (T) with whole-slice coverage are described.  ...  In 4 normal subjects, AFP-MRSI showed a signal-to-noise ratio improvement of 3.2±0.5 compared to Hahn-MRSI at the same spatial resolution, TR, TE and SENSE-acceleration factor.  ...  Typically, adiabatic pulses offer advantages over conventional, amplitude modulated RF pulses in terms of improved slice profiles, higher bandwidths, and insensitivity to inhomogeneities in the B 1 field  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1002/mrm.24357">doi:10.1002/mrm.24357</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/22692894">pmid:22692894</a> <a target="_blank" rel="external noopener" href="https://pubmed.ncbi.nlm.nih.gov/PMC3443531/">pmcid:PMC3443531</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/szbpfujfwnaxrf6pmbtj2j5xty">fatcat:szbpfujfwnaxrf6pmbtj2j5xty</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20200211033039/http://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC3443531&amp;blobtype=pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/36/71/367181f5998cc2dacbd5b1e199074943364a15b2.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1002/mrm.24357"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> wiley.com </button> </a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3443531" title="pubmed link"> <button class="ui compact blue labeled icon button serp-button"> <i class="file alternate outline icon"></i> pubmed.gov </button> </a>

Quantitative SENSE-MRSI of the human brain

David Bonekamp, Mari A. Smith, He Zhu, Peter B. Barker
<span title="">2010</span> <i title="Elsevier BV"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/dyab7yakdjgl3idr6oqhmg6ukq" style="color: black;">Magnetic Resonance Imaging</a> </i> &nbsp;
Materials and Methods- The method is based on the phantom replacement technique and uses receive coil sensitivity maps and body-coil loading factors to account for receive B 1 inhomogeneity and variable  ...  Corrections for cerebrospinal fluid content from the MRSI voxel were also applied, and the total protocol scan time was less than 15 min.  ...  MRSI with phased-array coils offers improved sensitivity compared to conventional volume head coils.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.mri.2009.11.003">doi:10.1016/j.mri.2009.11.003</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/20045600">pmid:20045600</a> <a target="_blank" rel="external noopener" href="https://pubmed.ncbi.nlm.nih.gov/PMC2944925/">pmcid:PMC2944925</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/j5hypask75cxjgw2cfjot4ges4">fatcat:j5hypask75cxjgw2cfjot4ges4</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20200208095602/http://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC2944925&amp;blobtype=pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/74/24/742422aa877eb76a74b32e1c544e9f337d8a6042.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.mri.2009.11.003"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> elsevier.com </button> </a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2944925" title="pubmed link"> <button class="ui compact blue labeled icon button serp-button"> <i class="file alternate outline icon"></i> pubmed.gov </button> </a>

In vivo MR spectroscopic imaging of the prostate, from application to interpretation

Nassim Tayari, Arend Heerschap, Tom W.J. Scheenen, Thiele Kobus
<span title="">2017</span> <i title="Elsevier BV"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/5r4gfkeau5adlcnppdgahdnr2e" style="color: black;">Analytical Biochemistry</a> </i> &nbsp;
The technology of 1 H MRSI is continuously evolving with improvements of hardware and acquisition methods.  ...  Besides the improvements for 1 H MRSI, the developments and opportunities for 31 P and 13 C MRSI for the prostate are reviewed.  ...  Conventional OVS bands are optimized to compensate for poor edge profiles, B 1 field inhomogeneity and chemical shift errors [44] .  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.ab.2017.02.001">doi:10.1016/j.ab.2017.02.001</a> <a target="_blank" rel="external noopener" href="https://www.ncbi.nlm.nih.gov/pubmed/28167072">pmid:28167072</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/mtksaluhifa3dk6qgp4536ilki">fatcat:mtksaluhifa3dk6qgp4536ilki</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20210717103854/https://repository.ubn.ru.nl/bitstream/handle/2066/177776/1/177776.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/50/6f/506fe6fd0b5ef0be7afdea0c96d8482352ee49d4.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.ab.2017.02.001"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="unlock alternate icon" style="background-color: #fb971f;"></i> elsevier.com </button> </a>
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