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Magnetic resonance imaging techniques for indirect assessment of myelin content in the brain using standard T1w and T2w MRI sequences and postprocessing analysis
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SYSNO ASEP 0580616 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Magnetic resonance imaging techniques for indirect assessment of myelin content in the brain using standard T1w and T2w MRI sequences and postprocessing analysis Tvůrce(i) Pokošová, P. (CZ)
Kala, David (FGU-C)
Šanda, J. (CZ)
Ježdík, P. (CZ)
Prysiazhniuk, Y. (CZ)
Faridová, A. (CZ)
Jahodová, A. (CZ)
Bělohlávková, A. (CZ)
Kalina, A. (CZ)
Holubová, Z. (CZ)
Jurášek, B. (CZ)
Kynčl, M. (CZ)
Otáhal, Jakub (FGU-C) RID, ORCID, SAIZdroj.dok. Physiological Research. - : Fyziologický ústav AV ČR, v. v. i. - ISSN 0862-8408
Roč. 72, Suppl.5 (2023), S573-S585Poč.str. 13 s. Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova myelination ; magnetic resonance imaging ; T1w/T2w ratio ; quantitative T1 brain mapping ; epilepsy ; focal cortical dysplasia Obor OECD Neurosciences (including psychophysiology CEP NU21-08-00228 GA MZd - Ministerstvo zdravotnictví Způsob publikování Open access Institucionální podpora FGU-C - RVO:67985823 UT WOS 001198072000013 EID SCOPUS 85181766551 DOI 10.33549/physiolres.935250 Anotace Magnetic Resonance Imaging (MRI) has revolutionized our ability to non-invasively study the brain's structural and functional properties. However, detecting myelin, a crucial component of white matter, remains challenging due to its indirect visibility on conventional MRI scans. Myelin plays a vital role in neural signal transmission and is associated with various neurological conditions. Understanding myelin distribution and content is crucial for insights into brain development, aging, and neurological disorders. Although specialized MRI sequences can estimate myelin content, these are time-consuming. Also, many patients sent to specialized neurological centers have an MRI of the brain already scanned. In this study, we focused on techniques utilizing standard MRI T1-weighted (T1w) and T2-weighted (T2w) sequences commonly used in brain imaging protocols. We evaluated the applicability of the T1w/T2w ratio in assessing myelin content by comparing it to quantitative T1 mapping (qT1). Our study included 1 healthy adult control and 7 neurologic patients (comprising both pediatric and adult populations) with epilepsy originating from focal epileptogenic lesions visible on MRI structural scans. Following image acquisition on a 3T Siemens Vida scanner, datasets were co-registered, and segmented into anatomical regions using the Fastsurfer toolbox, and T1w/T2w ratio maps were calculated in Matlab software. We further assessed interhemispheric differences in volumes of individual structures, their signal intensity, and the correlation of the T1w/T2w ratio to qT1. Our data demonstrate that in situations where a dedicated myelinsensing sequence such as qT1 is not available, the T1w/T2w ratio provides significantly better information than T1w alone. By providing indirect information about myelin content, this technique offers a valuable tool for understanding the neurobiology of myelin-related conditions using basic brain scans. Pracoviště Fyziologický ústav Kontakt Lucie Trajhanová, lucie.trajhanova@fgu.cas.cz, Tel.: 241 062 400 Rok sběru 2024 Elektronická adresa https://www.biomed.cas.cz/physiolres/pdf/72/72_S573.pdf
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