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BARTUŠEK, K. HADINEC, M.
Original Title
Correction method for non-homogeneous magnetic field
Type
conference paper
Language
English
Original Abstract
In this work, we developed a method, which is used for approximation of basic magnetic field B0 inside a specific spherical volume. This method uses Legendre multinominals expansion of magnetic flux density measured in discrete points on spherical volume. Using optimization technique of Least square method we modeled map of magnetic flux density on the desired surface and compared it to measured values of magnetic flux density. The coefficients of spherical function expansion obtained from approximation process can be used for determination of shimming currents which are feeding correction coils of tomograph. The results of approximated fields are described and compared to measured fields in the experimental part of this article.
Keywords
NMR, optimization methods, shimming, legendre multinominals, homogeneity
Authors
BARTUŠEK, K.; HADINEC, M.
RIV year
2008
Released
8. 9. 2008
Publisher
UTEE, FEKT VUT v Brně
Location
Paris
ISBN
978-80-214-3718-0
Book
Proceedings of the International Workshop on Teleinformatics and Electromagnetic Field
Pages from
1
Pages to
5
Pages count
BibTex
@inproceedings{BUT27567, author="Karel {Bartušek} and Michal {Hadinec}", title="Correction method for non-homogeneous magnetic field", booktitle="Proceedings of the International Workshop on Teleinformatics and Electromagnetic Field", year="2008", pages="1--5", publisher="UTEE, FEKT VUT v Brně", address="Paris", isbn="978-80-214-3718-0" }