%0 Journal Article
%T Automatic Adjustment of Gradient Preemphasis in MRI Systems<br>磁共振成像系统中的自动梯度预加重调节方法研究
%A ZANG Feng-chao
%A LI Jian-qi
%A WANG He
%A XIE Hai-bin
%A <br>臧凤超
%A 李建奇
%A 王　鹤
%A 谢海滨
%J 波谱学杂志
%D 2008
%I 
%X A method for eddy current compensation in MRI systems is presented. Using fitting and iteration programs, the method can find optimal settings for all three gradient directions in approximately 10 rain. In this method, useful signals are searched in advance to ensure that the measurements are reliable. It is proved on an OPM35I MRI system that the method proposed is efficient and simple, and can be used to enhance image quality with reduced debugging time.
%K magnetic resonance imaging
%K gradient
%K eddy current
%K pre-emphasis<br>磁共振成像
%K 梯度
%K 涡流
%K 预加重
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=1A3C8C6E452BD1AF5A6B6B99BA3989C9&aid=4E826CC9CD8A2BB32BC2E2D3622B80C5&yid=67289AFF6305E306&vid=C5154311167311FE&iid=CA4FD0336C81A37A&sid=96C778EE049EE47D&eid=9971A5E270697F23&journal_id=1000-4556&journal_name=波谱学杂志&referenced_num=0&reference_num=9