一种用于模拟磁共振成像中高场射频线圈阵列的快速积分方程方法。
A fast integral equation method for simulating high-field radio frequency coil arrays in magnetic resonance imaging.
机构信息
Department of Electrical and Computer Engineering, Auburn University, 200 Broun Hall, Auburn, AL 36849, USA.
出版信息
Phys Med Biol. 2011 May 7;56(9):2779-89. doi: 10.1088/0031-9155/56/9/010. Epub 2011 Apr 5.
Abstract
A fast full-wave numerical approach was developed for simulating high-field multi-channel radio-frequency (RF) receive coil arrays in magnetic resonance imaging. To improve the efficiency, the impedance matrix was compressed by a multilevel adaptive cross approximation method. Furthermore, careful organization of multiple coil simulations was applied so that the impedance matrix associated with biological subjects is constructed and pre-conditioned only once. Numerical examples demonstrate the efficacy of the proposed approach for RF coil simulations.
摘要
一种快速全波数值方法被开发用于模拟磁共振成像中的高场多通道射频（RF）接收线圈阵列。为了提高效率，使用多级自适应叉近似方法压缩阻抗矩阵。此外，还应用了仔细的多线圈模拟组织方法，以便仅构建和预处理与生物主体相关的阻抗矩阵一次。数值示例证明了所提出的 RF 线圈模拟方法的有效性。
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