METHOD AND APPARATUS FOR ANALYTICAL OPTIMIZATION OF WAVE-CAIPI MAGNETIC RESONANCE IMAGING PARAMETERS, AND MEDIUM

摘要

The present invention relates to the technical field of magnetic resonance imaging, and discloses a method and apparatus for analytical optimization of Wave-CAIPI magnetic resonance imaging parameters, and a medium. According to the parameter optimization method, imaging sequence parameters, i.e., a relative amplitude a and a period c, are automatically optimized, wherein according to an optimization algorithm of the parameters, i.e., the relative amplitude a and the period c, a gradient descent method is used for updating the relative amplitude a and the period c of a sinusoidal gradient field. According to the method, the influence of Wave-CAIPI magnetic resonance imaging sequence parameters (relative amplitude a and period c) on a g-factor is analyzed from theoretical and simulation aspects; parameter optimization is performed on the Wave-CAIPI magnetic resonance imaging technology in the prior art, such that the optimized parameters (relative amplitude a and period c) can achieve the smaller g-factor than empirically selected parameters (relative amplitude a and period c), thereby obtaining a reconstructed image with a higher signal-noise ratio.