Skip to Main content Skip to Navigation
Journal articles

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

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.
Document type :
Journal articles
Complete list of metadatas

https://hal-cea.archives-ouvertes.fr/cea-00854511
Contributor : Bruno Savelli <>
Submitted on : Tuesday, August 27, 2013 - 2:25:22 PM
Last modification on : Monday, February 10, 2020 - 6:13:42 PM

Identifiers

Citation

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, Elsevier, 2010, 205, pp.75-85. ⟨10.1016/j.jmr.2010.04.003⟩. ⟨cea-00854511⟩

Share

Metrics

Record views

305