Design and Magnetic Field Simulation of 3.0T MRI Superconducting Magnet

The 3.0T superconducting MRI system has the advantages of high field strength and high magnetic field uniformity and stability. It has become the mainstream research direction of the modern clinical MRI system. This paper analyzes the research status of the MRI system and designs the superconducting magnet of the 3.0T MRI system according to the six-order coil principle. The Ansoft Maxwell magnetic field simulation software is used to simulate the superconducting magnetic field of the first 3.0T/850 superconducting MRI system magnet, which includes the passive shimming technology and the magnetic field shielding technology. According to the result of simulation analysis, the prototype of 3.0T MRI is build and optimized. Finally, the magnetic field strength, magnetic field uniformity, and magnetic field stability of the prototype are guided to achieve the expected target.