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Abstract #4294

A Novel Optimization Method for the Design of Permanent Magnet Array and its Application to a Portable Magnetic Resonance Imaging (MRI) System

Zhi Hua Ren1 and Shao Ying Huang1,2

1EPD, Singapore University of Technology and Design, Singapore, Singapore, 2Department of Surgery, National University of Singapore, Singapore, Singapore

Permanent magnet array is a welcome option to provide main magnetic field for portable magnetic resonance imaging (MRI). In this abstract, we propose an efficient and fast optimization method which can optimize the filed strength and homogeneity for the design of permanent magnet arrays. The magnetic field of permanent magnets with the interference of irons is calculated by applying boundary integral method (BIM). For optimization, genetic algorithm particle swarm optimization (GAPSO) is applied which offers highly diversified options and converges fast. A permanent magnet array is optimized with significantly improved performance, and it will be built for low-field portable MR imaging.

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