公开(公告)号：US20160047873A1

公开(公告)日：2016-02-18

申请号：US14781297

申请日：2013-03-29

申请人： Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences

发明人： Yiu-cho Chung ,  Yanjie Zhu ,  Xin Liu ,  Hairong Zheng

IPC分类号： G01R33/561 ,  G01R33/56

CPC分类号： G01R33/5614 ,  G01R33/5602 ,  G01R33/5608

摘要： A fast magnetic resonance imaging method and system, the method comprising: applying a periodic radio-frequency pulse train to drive the magnetization vector of an imaging volume into a steady state (102); acquiring a free induction decay (FID) signal and an echo signal alternately in a steady-state free precession sequence (104); conducting an FID signal imaging and a T2-weighted imaging (106). Alternate acquisition of the FID signal and the echo signal in the steady-state free precession sequence effectively increases the signal-to-noise ratio (SNR) of the acquired signals and reduces the sensitivity of the sequence to motions.

摘要翻译： 一种快速磁共振成像方法和系统，所述方法包括：应用周期性射频脉冲串将成像体积的磁化矢量驱动到稳定状态（102）; 在稳态自由进动序列（104）中交替地获取自由感应衰减（FID）信号和回波信号; 进行FID信号成像和T2加权成像（106）。 FID信号和稳态自由进动序列中的回波信号的交替采集有效地增加了获取的信号的信噪比（SNR），并降低了序列对运动的灵敏度。