High-order MR shimming: a simulation study of the effectiveness of competing methods, using an established susceptibility model of the human head

The first step in the process of shimming a magnetic field is to characterize it by obtaining a field map and decomposing that map into a convenient set of basis functions. The strength of each member of the set is then calculated. Finally, a set of correction elements which generate fields correspo...

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Veröffentlicht in:	Applied magnetic resonance 2005-03, Vol.29 (1), p.39-64
Hauptverfasser:	Hillenbrand, D. F., Lo, K. M., Punchard, W. F. B., Reese, T. G., Starewicz, P. M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Basis functions Homogeneity Magnetic fields Magnetic permeability Magnetic resonance imaging Spatial distribution Spherical harmonics
Online-Zugang:	Volltext
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