| 永磁磁共振成像系统中磁体极板尺寸与梯度线圈的关系 |
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| 引用本文： | 刘若茜,黄常纲.永磁磁共振成像系统中磁体极板尺寸与梯度线圈的关系[J].电工电能新技术,2000,19(1):14-18. |
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| 作者姓名： | 刘若茜 黄常纲 |
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| 作者单位： | 中国科学院电工研究所,北京,100080 |
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| 摘 要： | 本文叙述了合理确定极板尺寸的意义,描述了梯度线圈的计算方法和设计指标,给出了框产体和开放式C型磁体在典型气隙尺寸下梯度磁场线性度与梯度线圈外形尺寸关系的计算,并讨论了一些因素对梯度线圈外形尺寸的影响，从而对磁体极板尺寸提出了要求。
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| 关 键 词： | 磁共振成像 磁体极板 梯度线圈 永磁体 |
| 修稿时间： | 1999-03-04 |
THE EFFECTS OF GRADIENT COIL ON POLE SIZE OF MAGNET FOR PERMANENT MRI SYSTEM |
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| LIU Ruoqian,HUANG Changgang.THE EFFECTS OF GRADIENT COIL ON POLE SIZE OF MAGNET FOR PERMANENT MRI SYSTEM[J].Advanced Technology of Electrical Engineering and Energy,2000,19(1):14-18. |
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| Authors: | LIU Ruoqian HUANG Changgang |
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| Abstract: | The designers of overall MRI system are interested in the selection of a rational pole size of permanent magnet so as to reduce both magnet weight and cost and satisfy technical requirement of linearity of gradient fields. In this paper calculation methods and technical requirements of gradient coils are described. The relationship between linearity of gradient field and sizes of magnet pole is given under the typical gap for frame type magnet and open C type magnet. The effect of some factors is discussed. |
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| Keywords: | permanent magnet magnet resonance image magnet pole gradient coil |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
