Title :
Optimal Design for High-Field MRI Superconducting Magnet
Author :
Wang, Chunzhong ; Chang, Tianqing ; Rong, Ming ; Dai, Yinming ; Ni, Zhipeng ; Li, Lankai ; Wang, Qiuliang
Author_Institution :
Inst. of Electr. Eng., Chinese Acad. of Sci., Beijing, China
fDate :
6/1/2011 12:00:00 AM
Abstract :
An optimal design method for high-field MRI magnet is put forward. The design procedure can be divided into two steps. First step is to design a set of coils to achieve the necessary center field, which is called the background field, and it is based on the optimal algorithm of minimum volume consumption by SQP. During the optimization, the safety factor of superconducting wires has been considered. The second step is to design a set of correction coils to achieve the necessary homogeneity, and the magnetic field produced by previous coils is set as background field, then optimize the homogeneity based on the nonlinear Least Square Method.
Keywords :
biomedical MRI; biomedical equipment; electrical engineering computing; least squares approximations; quadratic programming; superconducting coils; superconducting magnets; SQP; background magnetic field; coil design; correction coils; high field MRI superconducting magnet; minimum volume consumption; nonlinear least square method; safety factor; superconducting magnet optimal design; superconducting wires; Coils; Magnetic noise; Magnetic resonance imaging; Magnetic shielding; Safety; Superconducting magnets; Wires; MRI; SQP; nonlinear least square method; superconducting magnet;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2090324
