Larmor frequency shift from magnetized cylinders with arbitrary orientation distribution.
Larmor frequency
Lorentz cavity
magnetic microstructure
magnetic susceptibility
modeling
quantitative susceptibility mapping
Journal
NMR in biomedicine
ISSN: 1099-1492
Titre abrégé: NMR Biomed
Pays: England
ID NLM: 8915233
Informations de publication
Date de publication:
03 2023
03 2023
Historique:
revised:
22
10
2022
received:
08
03
2022
accepted:
23
10
2022
pubmed:
27
10
2022
medline:
7
2
2023
entrez:
26
10
2022
Statut:
ppublish
Résumé
The magnetic susceptibility of tissue can provide valuable information about its chemical composition and microstructural organization. However, the relation between the magnetic microstructure and the measurable Larmor frequency shift is understood only for a few idealized cases. Here we analyze the microstructure formed by magnetized, NMR-invisible infinite cylinders suspended in an NMR-reporting fluid. Through simulations, we scrutinize various geometries of mesoscopic Lorentz cavities and inclusions, and show that the cavity size should be approximately one order of magnitude larger than the width of the inclusions. We also analytically derive the Larmor frequency shift for a population of cylinders with arbitrary orientation dispersion and show that it is determined by the
Identifiants
pubmed: 36285793
doi: 10.1002/nbm.4859
pmc: PMC10078263
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e4859Informations de copyright
© 2022 The Authors. NMR in Biomedicine published by John Wiley & Sons Ltd.
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