Variable saturation gradient-based three-dimensional cest or z-spectrum magnetic resonance imaging method and device

An electronic device, comprising:

• a memory;
• a processor;
• and
• a computer program stored on the memory, wherein the computer program, when executed by the processor, implements a variable saturation gradient-based three-dimensional CEST or Z-spectrum magnetic resonance imaging method, and wherein the method comprises:
• applying a saturation pulse to a target object while turning on a gradient in an r-direction, reading out a set of raw images, and repeating the above process n times to obtain n sets of raw images, wherein a center frequency of the saturation pulse applied and a value of the gradient are different for each time, wherein r represents a spatial position and comprises at least one of x-direction, y-direction, or z-direction, and wherein n is an integer greater than 1;
• filling the n sets of raw images into an r-Δω plane, where Δω represents a frequency offset;
• determining a target uncollected image based on a collected image in the r-Δω plane, and estimating the target uncollected image;
• and
• performing interpolation and/or fitting based on the collected image and the estimated target uncollected image to obtain a CEST or Z-spectrum image having a high spatial resolution and a high spectral sampling rate.