Title :
Improved field homogenity for microstrip transceiver array for 7T MRI using particle swarm optimization
Author_Institution :
Remcom, Inc., State College, PA, USA
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;
Conference_Titel :
Microwave Conference (EuMC), 2013 European
Conference_Location :
Nuremberg
