电测与仪表Issue(z1)：126-129,104,5.
磁共振成像仪主磁场计量性能指标的选择
The Optional Specifications on the Main Magnetic Field of Magnetic Resonance Imaging
韩冰 1贺青 1张钟华 1李正坤 1王少华 1李辰 2王永瑞3
作者信息
- 1. 中国计量科学研究院 北京 100029
- 2. 清华大学 精密仪器与机械学系 北京 100084
- 3. 河北大学 质量技术监督学院，河北 保定 071002
- 折叠
摘要
Abstract
The main magnet is the most important part of magnetic resonance imaging, determining the imaging quality and working efficiency. To some extent, the performance of the main magnet should be important reference index for judging magnetic resonance imaging. Different from using traditional body model as detection method, this paper focused on optimizing some specifications to characterize the quality of magnetic resonance imaging from a perspective of the magnetic field measurement ,such as magnetic field intensity, magnetic field uniformity, 5 gauss scope of magnetic field and magnetic field stability. It is convenient to supervise the security and validity of magnetic resonance imaging equipments for metrological authorities. By comparing three methods of measuring the main magnetic field uniformity, nuclear magnetic resonance (NMR) is recommended to measure the main magnetic field uniformity of magnetic resonance imaging.关键词
磁共振成像仪/主磁场/计量/监管Key words
magnetic resonance imaging/main magnetic field/metrology/supervision分类
信息技术与安全科学引用本文复制引用
韩冰,贺青,张钟华,李正坤,王少华,李辰,王永瑞..磁共振成像仪主磁场计量性能指标的选择[J].电测与仪表,2014,(z1):126-129,104,5.
