A Parallel FDTD Scheme for Electromagnetic Analysis and Design of MRI System

Author

Wang, Hua ; Trakic, Adnan ; Xia, Ling ; Crozier, Stuart ; Liu, Feng ; Bialkowski, Marek

fYear

2006

fDate

Aug. 30 2006-Sept. 3 2006

Firstpage

264

Lastpage

267

Abstract

This paper presents a parallel-computing FDTD simulator for electromagnetic analysis and design applications in Magnetic Resonance Imaging system. It is intended to be a complete, high-performance FDTD model of an MRI system including all temporal RF and low-frequency field generating units and electrical models of the patient. The developed MRI-dedicated FDTD algorithm is adapted to a parallel computing architecture with the MPI library. Its capabilities are illustrated in two distinct, large-scale field problems. One concerns the interaction of RF-fields with human tissue at high magnitude fields. The other includes the characterization of the temporal eddy currents induced in the cryostat vessel during gradient switching. The presented examples demonstrate the computational efficiency and extended analyses available due to the parallel FDTD framework

Keywords

biological tissues; biomedical MRI; finite difference time-domain analysis; parallel architectures; MRI system design; RF-field; cryostat vessel; electromagnetic analysis; human tissue; magnetic resonance imaging; parallel-computing FDTD simulator; temporal eddy current; Analytical models; Computer architecture; Electromagnetic analysis; Finite difference methods; Large-scale systems; Libraries; Magnetic resonance imaging; Parallel processing; Radio frequency; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2006. EMBS '06. 28th Annual International Conference of the IEEE

Conference_Location

New York, NY

ISSN

1557-170X

Print_ISBN

1-4244-0032-5

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/IEMBS.2006.259674

Filename

4461735