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- The active shim coils of MRI system are mainly used to correct the unhomogeneity of magnetic field in real time. 磁共振成像系统中的有源匀场线圈主要用来对磁场的非均匀性进行实时校正,因此需要在短时间内算出匀场电流。
- In the end, a group of spin echo images(T1 weighted and T2 weighted) produced by the 0.2T MRI are given to demonstrate the satisfactory shimming performance of this active shimming system. 2T开放式永磁型医用核磁共振成像仪所研制的有源匀场系统的基本结构、工作原理和匀场方法,并在最后给出了该MRI通过自旋回波成像方式产生的一组影像(T1加权和T2加权)以展示该系统良好的匀场性能。
- Keywords active shimming;shim coils;magnetic field homogeneity;FID; 有源匀场;匀场线圈;磁场均匀度;FID;
- The orient has been playing an active role in the world economy. 亚洲一直在世界经济中发挥积极作用。
- He is an active member of the school's stamp club. 他是学校集邮俱乐部的一名活跃会员。
- Keywords MRI;magnet system;permanent magnet;passive shimming;active shimming;shim coils;FEA;magnetic induction intensity;magnetic field homogeneity; 磁共振成像;磁体系统;永磁体;无源匀场;有源匀场;匀场线圈;有限元分析;磁感应强度;磁场均匀度;
- An active volcano may explode at any time. 活火山随时都有可能爆发。
- Is it wise to engage in active sports at your age? 我这样的年纪积极参加体育活动是否明智？
- She was active as a left-winger in the party. 她是党内积极的左翼分子。
- He was very active and rode down several horses. 他劲头很大，一连骑了好几匹马。
- She plays an active part in local politics. 她积极参与地方政治活动。
- The steel market will continue to be active. 钢材市场将会继续保持活跃。
- An active volcano may erupt at any time. 活火山随时可能喷发。
- He was disabled when on active service. 他在战斗中受伤致残。
- Ms. Brown is active in the party. 布朗女士在晚会上很活跃。
- The active boy was extremely distractible. 那好动的男孩极不专心。
- His lame foot disqualified him for active work. 跛脚使他无法参加积极活动。
- Shim Hye-Jin is a veteran actress in Korea. 沈惠珍是韩国知名女演员。
- SHANGHAI NONG SHIM FOODS CO., LTD. 上海农心食品有限公司。
- He's very active for an elderly man. 作为老年人，他是非常活跃的。
