A New Method for Shimming a Magnetic Field in NMR System

摘要：

A new approach has been presented in the paper to gain a uniform magnetic field in NMR system. First, the adopted shimming piece is modeled as a magnetic dipole moment to calculate its magnetization effect on the background field within region of interest. Then, sequential quadratic programming method is utilized to determine the ideal solution for shim-ming work. Finally, the ideal solution is discretized, and quantization error control technique is prepared for special cases. This new method helps to reduce the inhomogeneity in the region of interest from 56.8 ppm to 14.21 ppm, within one hour in practical shimming work.

作者: Zhe Jin Xin Tang Feng Qi Donglin Zu Weimin Wang

作者单位: Key Laboratory for Quantum Information and Measurements, Ministry of Education School of Electronics Institute of Heavy Ion Physics, and Beijing Key Laboratory of Medical Physics and Engineering Physic

会议类型: 国际会议

会议名称: Progress in Electromagnetics Research Symposium 2007(2007年电磁学研究新进展学术研讨会)(PIERS 2007)

会议地点: 北京

会议语种:英文

页码: 1903-1906

在线出版日期: 2007-03-26（万方平台首次上网日期，不代表论文的发表时间）