Perfilador de campo magnético basado en en el tratamiento estadístico de señales de RMN para aplicaciones de homogenización espacial (NMR-SSC Magnetic Field Profiler Applied to Magnetic Field Shimming)

Héctor Segnorile (hh.segnorile@conicet.gov.ar), Guillermo Forte (forte@famaf.unc.edu.ar), Germán Farrher (gfarrher@famaf.unc.edu.ar.), Esteban Anoardo (anoardo@famaf.unc.edu.ar)


FaMAF - Universidad Nacional de Córdoba
This paper appears in: Revista IEEE América Latina

Publication Date: Feb. 2013
Volume: 11,   Issue: 1 
ISSN: 1548-0992


Abstract:
A new methodology aimed to control the spatial dependence of a magnetic field within a volume of interest is described. The designed hardware uses Nuclear Magnetic Resonance (NMR) to sense the magnetic field. A modified version of the Statistical Signal Characterization (SSC) method was used to analyze the NMR signal, providing a dynamical definition of the characterization parameters. The information is used to control the currents driving a set of coils that introduce corrections in the spatial dependence of the main field generated by an independent unit (magnet or electromagnet). As a practical matter, we deal with the particular case of magnetic field shimming.

Index Terms:
magnetic field, shimming, homogeneity, nuclear magnetic resonance   


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