Debye-Based Frequency-Domain Magnetization Model for Magnetic Nanoparticles in Magnetic Particle Spectroscopy
Debye-Based Frequency-Domain Magnetization Model for Magnetic Nanoparticles in Magnetic Particle Spectroscopy
复制标题
磁粒子光谱中磁性纳米粒子基于德拜的频域磁化模型
DOI：
10.1109/tmag.2014.2332371
复制
发表时间：
2015
影响因子：
2.1
通讯作者：
F. Ludwig
中科院分区：
文献类型：
--
作者：
T. Wawrzik;Takashi Yoshida;M. Schilling;F. Ludwig
磁粒子成像和磁粒子波谱中的信号产生一般用超顺磁性的朗之万函数来描述。为了包括磁化动力学，朗之万函数增加了从线性德拜模型衍生的频率相关项。在这里，我们将该表达式扩展到涵盖高次谐波的动力学，其中每个谐波都乘以一个复值加权因子，从而获得一个频域模型，用于粘度/结合相关的磁颗粒光谱测量。
Signal generation in magnetic particle imaging and magnetic particle spectroscopy is generally described via the Langevin function of superparamagnetism. To include the magnetization dynamics, the Langevin function is augmented with a frequency-dependent term derived from the linear Debye model. Here, we extend that expression to cover the dynamics of higher harmonics, where each harmonic is multiplied with a complex-valued weighting factor, obtaining a frequency-domain model for application in the context of viscosity-/binding-dependent magnetic particle spectroscopy measurements.
影响因子：
2.7
作者：
Ferguson RM;Minard KR;Krishnan KM
通讯作者：
Krishnan KM