Design of arbitrarily homogeneous permanent magnet systems for NMR and MRI: Theory and experimental developments of a simple portable magnet - Archive ouverte HAL Access content directly
Journal Articles Journal of Magnetic Resonance Year : 2010

Design of arbitrarily homogeneous permanent magnet systems for NMR and MRI: Theory and experimental developments of a simple portable magnet

(1) , (2) , (3) , (1)
1
2
3

Abstract

Starting from general results of magnetostatics, we give fundamental considerations on the design and characterization of permanent magnets for NMR based on harmonic analysis and symmetry. We then propose a simple geometry that takes advantage of some of these considerations and discuss the practical aspects of the assembly of a real magnet based on this geometry, involving the characterization of its elements, the optimization of the layout and the correction of residual inhomogeneities due to material and geometry imperfections. We report with this low-cost, light-weight magnet (100 euros and 1.8 kg including the aluminum frame) a field of 120 mT (5.1 MHz proton) with a 10 ppm natural homogeneity over a sphere of 1.5 mm in diameter.
Fichier principal
Vignette du fichier
Hugon2010.pdf (859.88 Ko) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

cea-00854511 , version 1 (09-11-2022)

Licence

Attribution - NonCommercial - CC BY 4.0

Identifiers

Cite

Cedric Hugon, Francesca d'Amico, Guy Aubert, Dimitris Sakellariou. Design of arbitrarily homogeneous permanent magnet systems for NMR and MRI: Theory and experimental developments of a simple portable magnet. Journal of Magnetic Resonance, 2010, 205, pp.75-85. ⟨10.1016/j.jmr.2010.04.003⟩. ⟨cea-00854511⟩
255 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More