Simulation study on iterative reconstruction method for time-correlation magnetic particle imaging with continuous trajectory scan
Simulation study on iterative reconstruction method for time-correlation magnetic particle imaging with continuous trajectory scan
复制标题
连续轨迹扫描时间相关磁粒子成像迭代重建方法仿真研究
DOI：
10.1109/tmag.2014.2332096
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Y. Ishihara
中科院分区：
文献类型：
--
作者：
S. Shimizu;T. Honma;H. Tsuchiya;Y. Ishihara
磁粒子成像（MPI）是一种适用于无创诊断的医学成像技术。然而，在传统的图像重建方法中，由于噪声或重建方法本身，重建图像的质量下降。为了抑制这个问题，我们改进了之前提出的时间相关 MPI 方法。具体来说，该方法通过减少磁性纳米粒子的观测信号与时间相关方法生成的重建图像的分析计算波形之间的差异来迭代地校正图像模糊。通过数值模拟，我们结合连续扫描技术评估了该方法的有效性，这使得快速数据采集成为可能。
Magnetic particle imaging (MPI) is a medical imaging technology suitable for noninvasive diagnostics. However, in conventional image reconstruction methods, due to either noise or the reconstruction method itself, the reconstructed image quality degrades. In order to suppress this problem, we improved the time-correlation MPI method that we had previously proposed. Specifically, this method iteratively corrects image blurring by reducing the difference between the observed signals from magnetic nanoparticles and the analytically calculated waveforms for the reconstructed image generated with the time-correlation method. Using numerical simulation, we evaluate the effectiveness of this method in conjunction with the continuous scan technique, which makes fast data acquisition possible.