物理学报Issue(1)：018301-1-018301-7,7.DOI:10.7498/aps.63.018301
结合振动控制的柱面纵向梯度线圈目标场设计方法
A target field metho d for designing cylindrical z-gradient coil combined with vibration control
摘要
Abstract
During the scanning of magnetic resonance imaging (MRI) system, the main acoustic noise source comes from the gradient coils. The gradient coils are turned on and off repeatedly, thus producing noise within the coil. With increasing magnetic field strength, the noise also increases. The primary method to reduce the noise is to decrease the distribution of the Lorentz forces. Target field (TF) method is very important for designing gradient coils which have been used in MRI and other applications. Many works based on the Turner’s traditional TF method have been proposed. In this paper, a target field method combined with vibration control has been presented to analyze the deflection of a cylindrical z-gradient coil because of the Lorentz forces. Simulation results via Matlab show that the maximum vibration amplitude can be reduced effectively by the new design method proposed in this paper.关键词
纵向梯度线圈/目标场方法/洛伦兹力/振动Key words
z-gradient coil/target field method/Lorentz force/vibration引用本文复制引用
胡格丽,倪志鹏,王秋良..结合振动控制的柱面纵向梯度线圈目标场设计方法[J].物理学报,2014,(1):018301-1-018301-7,7.基金项目
国家自然科学基金(批准号:10755001,50925726)资助的课题.@@@@Project supported by the National Natural Science Foundation of China (Grant Nos.50925726,50577063) （批准号:10755001,50925726）
