Evaluation of 3D radio-frequency electromagnetic fields for any matching and coupling conditions by the use of basis functions

Gianluigi Tiberi; Nunzia Fontana; Agostino Monorchio; Riccardo Stara; Alessandra Retico; Michela Tosetti

doi:10.1016/j.jmr.2015.09.015

Evaluation of 3D radio-frequency electromagnetic fields for any matching and coupling conditions by the use of basis functions

Gianluigi Tiberi, Nunzia Fontana, Agostino Monorchio, Riccardo Stara, Alessandra Retico, Michela Tosetti

Fondazione Stella Maris

Research output: Contribution to journal › Article › peer-review

Abstract

A procedure for evaluating radio-frequency electromagnetic fields in anatomical human models for any matching and coupling conditions is introduced. The procedure resorts to the extraction of basis functions: such basis functions, which represent the fields produced by each individual port without any residual coupling, are derived through an algebraic procedure which uses the S parameter matrix and the fields calculated in one (only) full-wave simulation. The basis functions are then used as building-blocks for calculating the fields for any other S parameter matrix. The proposed approach can be used both for volume coil driven in quadrature and for parallel transmission configuration.

Original language	English
Pages (from-to)	38-42
Number of pages	5
Journal	Journal of Magnetic Resonance
Volume	261
DOIs	https://doi.org/10.1016/j.jmr.2015.09.015
Publication status	Published - Dec 1 2015

Keywords

Electromagnetic RF fields
RF coils
RF full-wave simulations
Ultra high field magnetic resonance

ASJC Scopus subject areas

Nuclear and High Energy Physics
Biochemistry
Biophysics
Condensed Matter Physics

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10.1016/j.jmr.2015.09.015

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title = "Evaluation of 3D radio-frequency electromagnetic fields for any matching and coupling conditions by the use of basis functions",

abstract = "A procedure for evaluating radio-frequency electromagnetic fields in anatomical human models for any matching and coupling conditions is introduced. The procedure resorts to the extraction of basis functions: such basis functions, which represent the fields produced by each individual port without any residual coupling, are derived through an algebraic procedure which uses the S parameter matrix and the fields calculated in one (only) full-wave simulation. The basis functions are then used as building-blocks for calculating the fields for any other S parameter matrix. The proposed approach can be used both for volume coil driven in quadrature and for parallel transmission configuration.",

keywords = "Electromagnetic RF fields, RF coils, RF full-wave simulations, Ultra high field magnetic resonance",

author = "Gianluigi Tiberi and Nunzia Fontana and Agostino Monorchio and Riccardo Stara and Alessandra Retico and Michela Tosetti",

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T1 - Evaluation of 3D radio-frequency electromagnetic fields for any matching and coupling conditions by the use of basis functions

AU - Tiberi, Gianluigi

AU - Fontana, Nunzia

AU - Monorchio, Agostino

AU - Stara, Riccardo

AU - Retico, Alessandra

AU - Tosetti, Michela

PY - 2015/12/1

Y1 - 2015/12/1

N2 - A procedure for evaluating radio-frequency electromagnetic fields in anatomical human models for any matching and coupling conditions is introduced. The procedure resorts to the extraction of basis functions: such basis functions, which represent the fields produced by each individual port without any residual coupling, are derived through an algebraic procedure which uses the S parameter matrix and the fields calculated in one (only) full-wave simulation. The basis functions are then used as building-blocks for calculating the fields for any other S parameter matrix. The proposed approach can be used both for volume coil driven in quadrature and for parallel transmission configuration.

AB - A procedure for evaluating radio-frequency electromagnetic fields in anatomical human models for any matching and coupling conditions is introduced. The procedure resorts to the extraction of basis functions: such basis functions, which represent the fields produced by each individual port without any residual coupling, are derived through an algebraic procedure which uses the S parameter matrix and the fields calculated in one (only) full-wave simulation. The basis functions are then used as building-blocks for calculating the fields for any other S parameter matrix. The proposed approach can be used both for volume coil driven in quadrature and for parallel transmission configuration.

KW - Electromagnetic RF fields

KW - RF coils

KW - RF full-wave simulations

KW - Ultra high field magnetic resonance

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JO - Journal of Magnetic Resonance

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Evaluation of 3D radio-frequency electromagnetic fields for any matching and coupling conditions by the use of basis functions

Abstract

Keywords

ASJC Scopus subject areas

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