基于整数规划的特殊永磁型磁体匀场技术的改进研究  

Research Based on Integer Programming on Improvement of the Shimming Technology of Permanent Main Magnet for MRI Devices

作　　者：李会香[1] 谢德馨[1] 任自艳[1] 

机构地区：[1]沈阳工业大学电气工程学院,沈阳110178

出　　处：《世界科技研究与发展》2008年第5期627-630,共4页World Sci-Tech R&D

基　　金：高等学校博士学科点专项科研基金(项目编号:20050142003)的资助

摘　　要：本文针对磁共振成像(MRI)系统成像对磁体的要求,提出了一种基于整数规划的无源匀场数学模型。按照实际匀场时以测量平面的中心场值为参考基础,改进了原有的模型,进行了匀场模拟。匀场结果表明,该方法能快速有效地完成匀场过程。The mathematical model of passive shimming based on integer programming for medical Magnetic Resonance Imaging （MRI） is researched in this paper. The nmdel of integer programming is improved according to selecting the center magnetic field of measured plane as basic standard. The shimming is simulated at the same time. The results of computation indicate that the shimming process can be completed effectually by the reformative method.

关 键 词：磁共振成像系统 无源匀场 整数规划 

分 类 号：TM153[电气工程—电工理论与新技术]