用动力学蒙特卡罗方法模拟MPI示踪剂磁化

2013 International Workshop on Magnetic Particle Imaging (IWMPI) Pub Date : 2013-03-23 DOI:10.1109/IWMPI.2013.6528374

L. Hua, O. Hovorka, R. M. Ferguson, R. Chantrell, K. Krishnan

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引用次数: 2

摘要

从模拟和实验的一致性来看，我们得出结论，在典型的磁场条件下，MPI示踪剂可以被视为铁磁体。通过改变每个粒子的各向异性场的色散，我们有效地模拟了由于粒子中存在尺寸分布而预期的磁滞曲线特征，并且我们正确地预测了磁化的显着特征，例如磁滞的外观作为尺寸和频率的函数。

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MPI tracer magnetization simulated using a Kinetic Monte Carlo method

From agreement between simulations and experiments, we conclude that MPI tracers can be treated as ferromagnets under typical field conditions. By varying the dispersion of the anisotropy field of each particle, we effectively modeled features of the hysteresis curve that were expected due to the presence of size distribution in the particles and we properly predicted notable features of the magnetization, such as appearance of hysteresis as a function of size and frequency.

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2013 International Workshop on Magnetic Particle Imaging (IWMPI)

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