[1]李 黎,平学伟,殷兴辉,等.磁共振成像中取向硅钢片饱和磁化强度测定方法[J].南京理工大学学报(自然科学版),2018,42(05):560.[doi:10.14177/j.cnki.32-1397n.2018.42.05.008]
 Li Li,Ping Xuewei,Yin Xinghui,et al.Measuring method of saturation magnetization for grain-orientedsilicon steel sheet in magnetic resonance imaging[J].Journal of Nanjing University of Science and Technology,2018,42(05):560.[doi:10.14177/j.cnki.32-1397n.2018.42.05.008]
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磁共振成像中取向硅钢片饱和磁化强度测定方法()
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
42卷
期数:
2018年05期
页码:
560
栏目:
出版日期:
2018-10-30

文章信息/Info

Title:
Measuring method of saturation magnetization for grain-orientedsilicon steel sheet in magnetic resonance imaging
文章编号:
1005-9830(2018)05-0560-04
作者:
李 黎12平学伟1殷兴辉1牟善祥2
1.河海大学 计算机与信息学院,江苏 南京 211100; 2.南京理工大学 电子工程与光电技术学院,江苏 南京 210094
Author(s):
Li Li12Ping Xuewei1Yin Xinghui1Mou Shanxiang2
1.College of Computer and Information Engineering,Hohai University,Nanjing 211100,China; 2.School of Electronic and Optical Engineering,Nanjing University of Scienceand Technology,Nanjing 210094,China
关键词:
硅钢片 饱和磁化强度 无源匀场 磁共振成像 梯度线圈 超导磁体
Keywords:
silicon steel sheets saturation magnetization passive shimming magnetic resonance imaging gradient coils superconducting magnet
分类号:
TM154
DOI:
10.14177/j.cnki.32-1397n.2018.42.05.008
摘要:
该文提出一种适于工程应用的取向硅钢片饱和磁化强度测定方法。将硅钢片放入待匀场梯度线圈的匀场轨道中,利用磁场测量设备测量出采样点处硅钢片产生的纵向磁感应强度,将测量结果通过迭代算法优化,即可计算出取向硅钢片的饱和磁化强度。结果表明,将饱和磁化强度计算结果用于磁共振成像系统无源匀场时,提高了成像质量。该方法在实际应用中方便易行,无需大量计算,效率较高。
Abstract:
A measuring method of saturation magnetization for oriented silicon steel sheets in engineering application is proposed here. Silicon steel sheets are placed into the shim rails distributed on the gradient coils and the axial magnetization of sampling points is measured through using the magnet field camera. The saturation magnetization of grain-oriented silicon steel sheets is obtained by iterative optimization algorithms. The result of the saturation magnetization can make the passive shimming of the magnetic resonance imaging system more efficient and improve the imaging quality. The method is convenient and easy for practice use. It needs less computation load and is more efficient.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-01-30 修回日期:2018-05-24
基金项目:国家自然科学基金(U1531101)
作者简介:李黎(1981-),女,博士生,讲师,主要研究方向:高分辨率雷达与雷达成像技术,电磁场快速仿真与设计算法,E-mail:lili_lee@hhu.edu.cn; 通讯作者:牟善祥(1953-),男,研究员,主要研究方向:高分辨率雷达与雷达成像技术,相控阵雷达理论与系统技术,E-mail:abcmsx@163.com。
引文格式:李黎,平学伟,殷兴辉,等. 磁共振成像中取向硅钢片饱和磁化强度测定方法[J]. 南京理工大学学报,2018,42(5):560-563.
投稿网址:http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2018-10-30