Improved field homogenity for microstrip transceiver array for 7T MRI using particle swarm optimization

Author

Stack, James F.

Author_Institution

Remcom, Inc., State College, PA, USA

fYear

2013

fDate

6-10 Oct. 2013

Firstpage

1239

Lastpage

1242

Abstract

Microstrip resonators (MSR) show great promise for application to high field magnetic resonance imaging (MRI); however, the conventional MSR produces an inhomogenous field that is strong in the center and weak at the terminating ends. Recent work investigated the application of alternating impedance MSR to improve field homogeneity. Building from these efforts, a new variable impedance MSR configuration is proposed by allowing variation in element size and spacing. Finite difference time domain (FDTD) simulations and particle swarm optimization (PSO) are used to arrive at an optimal design.

Keywords

biomedical MRI; finite difference time-domain analysis; microstrip resonators; particle swarm optimisation; transceivers; FDTD simulations; MRI; PSO; alternating impedance MSR; field homogenity; finite difference time domain simulations; inhomogenous field; magnetic resonance imaging; microstrip resonators; microstrip transceiver array; optimal design; particle swarm optimization; variable impedance MSR configuration; Finite difference methods; Finite element analysis; Geometry; Impedance; Magnetic resonance imaging; Microstrip; Time-domain analysis; High performance computing; Magnetic resonance imaging; Particle swarm optimization;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference (EuMC), 2013 European

Conference_Location

Nuremberg

Type

conf

Filename

6686888