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首页> 外文会议>2013 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices >A novel target field approach to design of biplanar gradient coils for permanent MRI system
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A novel target field approach to design of biplanar gradient coils for permanent MRI system

机译：一种用于永久性MRI系统的双平面梯度线圈设计的新型目标场方法

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摘要

Target Field (TF) method is very important for design of shim and gradient coils. Many works based on TF have been proposed. To restrict the current distribution on a rectangular plane with finite size, the current density is expanded by Fourier series and the unknown coefficients are estimated based on the standard Least Square (LS) with L2 norm regularization (LS-L2). Then the winding pattern of the coils can be obtained by the stream function method. In this paper, the proposed method was employed to design a transverse gradient coil for a magnetic resonance imaging (MRI) system. The size of the two planes is 500 mm × 150 mm, the distance of which is 50mm, and the region of interest is a cylinder with radius of 4mm and length of 8mm. The simulation results demonstrate that the proposed method is practical in biplanar MRI system.
机译：目标场（TF）方法对于匀场线圈和梯度线圈的设计非常重要。已经提出了许多基于TF的作品。为了将电流分布限制在有限尺寸的矩形平面上，通过傅立叶级数扩展电流密度，并基于具有L2范数正则化的标准最小二乘法（LS）来估计未知系数。然后，可以通过流函数方法获得线圈的绕组图案。在本文中，所提出的方法被用于设计磁共振成像（MRI）系统的横向梯度线圈。两个平面的大小为500 mm×150 mm，其距离为50mm，并且感兴趣的区域是半径为4mm，长度为8mm的圆柱体。仿真结果表明，该方法在双平面MRI系统中是可行的。

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