This abstract presents the development of a digital-twin of a permanent-magnet-array-based portable MRI system. It is to guide the design, optimization, hardware debug and calibration, and evaluation of such a system at both a sub-system level and a system level. Meanwhile, it facilitates the development of a sub-system without building the whole system. It consists of the simulators for magnet array, RF coil, gradient coils, pulse sequence, k-space analysis, image reconstruction, and image quality evaluation.
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