Efficient gradient field generation providing a multi-dimensional arbitrary shifted field-free point for magnetic particle imaging
Efficient gradient field generation providing a multi-dimensional arbitrary shifted field-free point for magnetic particle imaging
复制标题
高效的梯度场生成为磁性粒子成像提供多维任意移位无场点
DOI：
--
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
T. Buzug
中科院分区：
文献类型：
--
作者：
C. Kaethner;M. Ahlborg;T. Knopp;T. Sattel;T. Buzug
磁颗粒成像（MPI）是一种层析成像方式，能够利用磁场可视化示踪剂。高磁梯度强度是必不可少的，以达到合理的图像质量。因此，线圈配置的功率优化是必不可少的。为了实现一个多维高效的梯度场发生器，与传统的麦克斯韦线圈结构相比，提出了以下改进：(1)弯曲矩形线圈，(2)交错线圈，(3)多层线圈。结合这些适应导致总功率降低三个数量级，这是构建全身人体MPI扫描仪可行性的重要一步。
Magnetic Particle Imaging (MPI) is a tomographic imaging modality capable to visualize tracers using magnetic fields. A high magnetic gradient strength is mandatory, to achieve a reasonable image quality. Therefore, a power optimization of the coil configuration is essential. In order to realize a multi-dimensional efficient gradient field generator, the following improvements compared to conventionally used Maxwell coil configurations are proposed: (i) curved rectangular coils, (ii) interleaved coils, and (iii) multi-layered coils. Combining these adaptions results in total power reduction of three orders of magnitude, which is an essential step for the feasibility of building full-body human MPI scanners.