Rapid optimization design method and device for high-magnetic-field-uniformity magnet for mobile magnetic resonance imaging, medium and product

Abstract

The invention discloses a rapid optimization design method and device for a high-magnetic-field-uniformity magnet for mobile magnetic resonance imaging, a medium and a product, and relates to the field of data processing. The method comprises the following steps: analyzing and expanding a magnetic field space distribution model of a single magnet to a whole Halbach array through a magnetic field superposition principle to obtain a magnetic field space distribution model of the Halbach array; adding temperature parameters into the magnetic field spatial distribution model of the Halbach array to obtain a magnetic field analysis model; taking a to-be-optimized magnet structure parameter as an initial position of a grey wolf, calling the magnet array analytical model by adopting an improved grey wolf optimization algorithm to perform iterative solution on each grey wolf position and the fitness value corresponding to the grey wolf position, and obtaining an optimal solution and a corresponding fitness value; and designing and obtaining the Halbach array based on the optimal solution and the corresponding fitness value. According to the invention, high magnetic field uniformity can be maintained, rapid design and optimization of the magnet are realized, and miniaturization is realized.

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