Simulation and Optimization of a Permanent Magnet for Small-sized MRI by Genetic Algorithm
Yiyuan Cheng, Ling Xia, Wei He
Available Online April 2013.
- https://doi.org/10.2991/icsem.2013.158How to use a DOI?
- simulation, optimization, permanent magnet, genetic algorithm
- The main magnet produces the main magnetic field in the imaging area as one of the important parts of the magnetic resonance imaging (MRI) system. In a permanent MRI magnet, the widespread end effect causes a non-uniform magnetic field distribution and affects the imaging quality. In this paper, an H-type permanent magnet for small-sized MRI applications was designed; in particular, we added an optimized shimming ring outside the pole piece to improve the magnetic field uniformity. Genetic algorithms are used to solve the complex and nonlinear calculation of the magnetic field. The simulation results show that the magnet optimized by the proposed method generates a homogeneous magnetic field that can be easily implemented in practice.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Yiyuan Cheng AU - Ling Xia AU - Wei He PY - 2013/04 DA - 2013/04 TI - Simulation and Optimization of a Permanent Magnet for Small-sized MRI by Genetic Algorithm BT - 2nd International Conference On Systems Engineering and Modeling (ICSEM-13) PB - Atlantis Press SP - 769 EP - 772 SN - 1951-6851 UR - https://doi.org/10.2991/icsem.2013.158 DO - https://doi.org/10.2991/icsem.2013.158 ID - Cheng2013/04 ER -