Rapid four-ring birdcage coil analysis: Design optimization for high efficiency, low interference, and improved body loading tolerance.
Body loading effect
Boundary condition
Coil coupling
Coil efficiency
Four-ring birdcage coil
Meshing density
Model geometry
Quality factor
Journal
Magnetic resonance imaging
ISSN: 1873-5894
Titre abrégé: Magn Reson Imaging
Pays: Netherlands
ID NLM: 8214883
Informations de publication
Date de publication:
02 2020
02 2020
Historique:
received:
06
06
2019
revised:
21
11
2019
accepted:
21
11
2019
pubmed:
26
11
2019
medline:
25
9
2020
entrez:
26
11
2019
Statut:
ppublish
Résumé
The Design accuracy of MRI system with dual-tuned four-ring birdcage coils remains challenging due to inter-coil interference that tends to deteriorate signal-to-noise ratio and thus image quality. In this study, we develop an accurate and efficient FEM modeling strategy by optimizing model geometries, meshing density, and boundary conditions in accord with the correlated measurements on test vehicles. By taking full advantages of simulation accuracy and efficiency, we are able to proceed with sensitivity analysis on critical RF characteristics such as resonance pattern, quality factor, coil coupling, and body loading effects, etc., which may further serve as guidelines for coil design optimization.
Identifiants
pubmed: 31765689
pii: S0730-725X(19)30343-1
doi: 10.1016/j.mri.2019.11.018
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
30-35Informations de copyright
Copyright © 2019 Elsevier Inc. All rights reserved.