Počet záznamů: 1
Low-level fat fraction quantification at 3 T: comparative study of different tools for water-fat reconstruction and MR spectroscopy
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SYSNO ASEP 0522218 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Low-level fat fraction quantification at 3 T: comparative study of different tools for water-fat reconstruction and MR spectroscopy Tvůrce(i) Kořínek, Radim (UPT-D) RID, ORCID, SAI
Gajdošík, M. (AT)
Trattnig, S. (AT)
Starčuk jr., Zenon (UPT-D) RID, ORCID, SAI
Krššák, M. (AT)Celkový počet autorů 5 Číslo článku - Zdroj.dok. Magnetic Resonance Materials in Physics, Biology and Medicine. - : Springer - ISSN 0968-5243
-, JAN (2020)Poč.str. 14 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova low-level fat fraction ; proton density fat fraction ; quantification ; MR imaging ; MR spectroscopy Vědní obor RIV BH - Optika, masery a lasery Obor OECD Radiology, nuclear medicine and medical imaging CEP ED0017/01/01 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy LO1212 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy 8J18AT023 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UPT-D - RVO:68081731 UT WOS 000509140200001 DOI 10.1007/s10334-020-00825-9 Anotace Objectives Chemical Shift Encoded Magnetic Resonance Imaging (CSE-MRI)-based quantification of low-level (< 5% of proton density fat fraction-PDFF) fat infiltration requires highly accurate data reconstruction for the assessment of hepatic or pancreatic fat accumulation in diagnostics and biomedical research. Materials and methods We compare three software tools available for water/fat image reconstruction and PDFF quantification with MRS as the reference method. Based on the algorithm exploited in the tested software, the accuracy of fat fraction quantification varies. We evaluate them in phantom and in vivo MRS and MRI measurements. Results The signal model of Intralipid 20% emulsion used for phantoms was established for 3 T and 9.4 T fields. In all cases, we noticed a high coefficient of determination (R-squared) between MRS and MRI-PDFF measurements: in phantoms, and in vivo . Bland-Altman analysis was applied to phantom and in vivo measurements. Discussion Multi-echo MRI in combination with an advanced algorithm including multi-peak spectrum modeling appears as a valuable and accurate method for low-level PDFF quantification over large FOV in high resolution, and is much faster than MRS methods. The graph-cut algorithm (GC) showed the fewest water/fat swaps in the PDFF maps, and hence stands out as the most robust method of those tested. Pracoviště Ústav přístrojové techniky Kontakt Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Rok sběru 2020 Elektronická adresa https://link.springer.com/content/pdf/10.1007%2Fs10334-020-00825-9.pdf
Počet záznamů: 1