Sparse Reconstruction of the Magnetic Particle Imaging System Matrix
Sparse Reconstruction of the Magnetic Particle Imaging System Matrix
复制标题
磁粒子成像系统矩阵的稀疏重建
DOI：
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复制
发表时间：
2013
影响因子：
10.6
通讯作者：
A. Weber
中科院分区：
文献类型：
--
作者：
T. Knopp;A. Weber
磁粒子成像可以确定磁性纳米颗粒在体内的空间分布。磁粉成像中的系统矩阵通常是在繁琐的校准扫描中获取的，并且需要在视场中的许多位置测量系统响应。在本文中，我们提出了一种显著减少所需校准扫描次数的方法。它利用了系统矩阵的特殊结构，并应用了稀疏重构技术。实验表明，校准扫描次数可以减少一个系数，通常只会造成图像质量的边际损失。
Magnetic particle imaging allows to determine the spatial distribution of magnetic nanoparticles in vivo. The system matrix in magnetic particle imaging is commonly acquired in a tedious calibration scan and requires to measure the system response at numerous positions in the field-of-view. In this paper, we propose a method that significantly reduces the number of required calibration scans. It exploits the special structure of the system matrix and applies sparse reconstruction techniques. Experiments show that the number of calibration scans can be reduced by a factor often with only marginal loss of image quality.
影响因子：
2.7
作者：
Ferguson RM;Minard KR;Krishnan KM
通讯作者：
Krishnan KM