【摘要】 核磁共振成像仪是先进的诊断仪器 ,磁场装置是该仪器的关键部分 .采用钕铁硼和铁氧体的混合结构 ,可以提高磁场的稳定性 ,降低成本 .该文采用计算机模拟磁体装置的优化设计 ,可使磁路结构合理 ,磁能充分利用 ,这对于实际建造该仪器设备具有指导意义 .更多还原

【Abstract】 Magnetic resonance imaging is an advanced technique for diagonosis. In an MRI system, the magnet is a key component. By applying a mixed structure of NdFeB and ferrite, field stability can be improved, and the cost reduced. MRI magnetic circuits are designed using CAD in this paper. The results show that the obtained circuit is more reasonable as the magnetic energy can be fully utilized. Therefore the described technique is useful in manufacturing MRI equipment.更多还原