磁粒子成像是一种近年来提出的新型检测技术，其通过高梯度磁场对超顺磁性氧化铁纳米颗粒进行浓度空间分布示踪实现医学成像．由于目前尚缺乏超导线圈在磁粒子成像中应用的探讨，本文通过虚拟仿真的方法，证明了用高温超导MgB2线圈构建磁粒子成像系统中梯度磁场的可行性，与传统铜线圈相比，MgB2线圈可将设备体积和重量显著减小，同时提供了更精细的扫描区域和更高的磁梯度．

Magnetic particle imaging (MPI) is a novel detection technology proposed in recent years, that achieves medical imaging by tracing the spatial distribution of the concentration of superparamagnetic iron oxide nanoparticles through a high-gradient magnetic field. Given the current lack of research on the application of superconducting coils in MPI, this paper demonstrates the feasibility of using high-temperature superconducting MgB2 coils to construct the gradient magnetic field in an MPI system through virtual simulation methods. Compared with traditional copper coils, MgB2 coils can significantly reduce the size and weight of the equipment while providing a finer scanning area and a higher magnetic gradient.