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Simulation of coupled-spin systems in the steady-state free-precession acquisition mode for fast magnetic resonance (MR) spectroscopic imaging
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SYSNO ASEP 0333618 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Simulation of coupled-spin systems in the steady-state free-precession acquisition mode for fast magnetic resonance (MR) spectroscopic imaging Author(s) Starčuk jr., Zenon (UPT-D) RID, ORCID, SAI
Starčuková, Jana (UPT-D) RID, SAI, ORCID
Štrbák, Oliver (UPT-D)
Graveron-Demilly, D. (FR)Number of authors 4 Source Title Measurement Science and Technology. - : Institute of Physics Publishing - ISSN 0957-0233
Roč. 20, č. 10 (2009), 104033:1-9Number of pages 9 s. Language eng - English Country GB - United Kingdom Keywords magnetic resonance ; fast spectroscopic imaging ; steady-state free-precession ; coupled-spin system ; density matrix simulation Subject RIV JA - Electronics ; Optoelectronics, Electrical Engineering Next source Framework programmes of European Commission UT WOS 000269874900034 DOI 10.1088/0957-0233/20/10/104033 Annotation The steady-state free-precession (SSFP) acquisition mode may be found useful for fast in vivo proton MR spectroscopic imaging in high-field MR systems because of the achievable signal-to-noise ratio and the avoidance of RF pulses with large flip angles. Detection of signals from metabolites with coupled-spin systems under SSFP has not yet been accomplished, but should be possible in high field, albeit with substantial signal truncation. It must be expected that the spin system evolution and the spectra will be affected by the steady-state conditions, which prevent the spin systems from returning to the Boltzmann equilibrium. Computer simulation is needed for the experiment design and spectrum quantification. This work outlines a suitable simulation method (QuaM-EPG), which combines and extends two pre-existing approaches: the density matrix calculation, used in high-resolution NMR, and the extended phase graph method, used to describe cyclic excitation in fast MRI of water protons. Workplace Institute of Scientific Instruments Contact Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Year of Publishing 2010
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