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Keywords: Proton magnetic resonance spectroscopic imaging 7 T Ultra-high resolution spectroscopic imaging Parallel imaging Brain Hadamard encoding A B S T R A C T MRSI in the brain at ≥7 T is a technique ... To overcome these limitations, we propose an ultra-high resolution (UHR) MRSI sequence that provides a 128×128 matrix with a nominal voxel volume of 1.7×1.7×8 mm 3 in a comparatively short measurement ... Purpose We propose a high-resolution FID-acquisition sequence for ultrahigh resolution (UHR)-MRSI at 7 T. ...doi:10.1016/j.neuroimage.2016.10.043 pmid:27825954 fatcat:jltpe5k7azgcta447oyogn5w6a
2D-CAIPIRINHA at 7 Tesla (T). ... Thus, this sequence significantly decreased the RMSE of the metabolic maps by 12.1 and 6.9%, on average, for 4 < R < 11, compared with 2D-GRAPPA and 2D-CAIPIRINHA, respectively. ... ACKNOWLEDGMENTS This study was supported by the Austrian Science Fund (KLI-61) and FFG Bridge Early Stage Grant No. 846505. ...doi:10.1002/mrm.26386 pmid:27548836 pmcid:PMC5535010 fatcat:zcyjyhad25aqhczsi3dc535s7m
In addition to direct assessment of high energy phosphorus containing metabolite content within tissues, phosphorus magnetic resonance spectroscopy (31P-MRS) provides options to measure phospholipid metabolites ... Acknowledgement The financial support for the research of the authors at their home institutions by the Christian Doppler Society e Clinical Molecular MR Imaging (MOLIMA), by the OeNB Jubilaeumsfond (grant ... #15363 and #15455), by the Slovak Grant Agencies VEGA (grant #2/0001/17) and APVV (grant #15-0029), and by a Sir Henry Dale Fellowship from the Wellcome Trust and the Royal Society (grant #098436/Z/12 ...doi:10.1016/j.ab.2017.01.018 pmid:28119063 pmcid:PMC5478074 fatcat:5fzgmb2kf5d6znf7xkjhakfhcq
The benefits of T-HSI are demonstrated by a quantitative comparison to CSI of the SNR and localization in a phantom in both one and three dimensions at clinical resolutions. ... Clinical utility of the new method is shown by spectra obtained from the brain of a healthy volunteer. ... axial, sagittal and coronal projections at 1 mm 3 isotropic resolution for VOI image-guidance. 3D T-HSI At TR=1.2 s, optimal for ~1 s T 1 s of brain metabolites (83), the 8×8×4=256 encoding steps ...doi:10.7916/d8639x3v fatcat:3h7awooaqzglbcbaxqo6rqhrbi
To support the research group in the High-Field MR Centre in Vienna at the AKH and the Medical University, a fully scanner-integrated reconstruction pipeline for a fast whole-brain Magnetic Resonance Spectroscopic ... Imaging (MRSI) sequence was developed. ... Subsequently, the VAPOR technique was also adapted for human brain applications at 7 T. ...doi:10.34726/hss.2022.87801 fatcat:m2c6mys555ganmvynjy6xmxq3m
Proton magnetic resonance spectroscopy (1H MRS) enables quantitation of brain metabolites in vivo and non-invasively. ... The regulation of signal transduction in the human brain by the main inhibitory and excitatory neurotransmitters GABA and glutamate is subject of current research, as alterations in their turnover are ... Exemplary statistical parametric maps are mapped onto a transverse anatomical high resolution MP-RAGE scan. The color encodes the statistical power of the activation patterns. ...doi:10.25673/2160 fatcat:nulz4hjt6nctvakbmwkblr6euu