Analytic approach to the design of transverse gradient coils with co-axial return paths
Analytic approach to the design of transverse gradient coils with co-axial return paths
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DOI：
10.1002/(sici)1522-2594(199903)41:3
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发表时间：
1999-03-01
影响因子：
3.3
通讯作者：
Peters, A
中科院分区：
文献类型：
--
作者：
Bowtell, R;Peters, A
与标准圆柱形梯度线圈相比，由于局部力平衡，具有同轴返回路径的横向梯度线圈可以降低声学噪声，并且还可以很容易地使长度与直径之比小于1。这里描述了由这种类型的线圈产生的磁场和矢势的解析表达式，沿着用于计算线圈电感的公式。结果表明，这些表达式允许执行强大的分析方法的线圈设计，以及积极的磁屏蔽的公司。它还演示了如何数学指定的最佳参数时，使用设计线圈的元素数量少。使用这里描述的分析方法设计了在3.0 T下使用的头部梯度线圈。线圈的设计和施工过程中概述和线圈的性能与类似的标准圆柱形线圈进行了比较。Magn Reson Med 41：600-608，1999年。(C)1999 Wiley-Liss，Inc.
Transverse gradient coils with co-axial return paths offer reduced acoustic noise compared with standard cylindrical gradient coils, due to local force balancing, and can also easily be made to have a length to diameter ratio that is less than one. Analytic expressions for the magnetic field and vector potential generated by this type of coil are described here, along with a formula for calculating the coil inductance. It is shown that these expressions allow the implementation of powerful analytic methods of coil design, as well as the Incorporation of active magnetic screening. It is also demonstrated how the mathematics specifies the best parameters to use when designing coils with small numbers of elements. A head gradient coil for use at 3.0 T has been designed using the analytic approach described here. The process of coil design and construction is outlined and the performance of the coil in comparison with a similar standard cylindrical coil is described. Magn Reson Med 41:600-608, 1999. (C) 1999 Wiley-Liss, Inc.