公开(公告)号：US20160047873A1

公开(公告)日：2016-02-18

申请号：US14781297

申请日：2013-03-29

Applicant: Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences

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

IPC: G01R33/561 ,  G01R33/56

CPC classification number: G01R33/5614 ,  G01R33/5602 ,  G01R33/5608

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US11830111B2

公开(公告)日：2023-11-28

申请号：US17047062

申请日：2018-05-17

Applicant: Shenzhen Institutes of Advanced Technology

Inventor： Yanjie Zhu ,  Yuanyuan Liu ,  Dong Liang ,  Xin Liu ,  Hairong Zheng

IPC: G06T11/00 ,  G01R33/56 ,  G01R33/561 ,  A61B5/055

CPC classification number: G06T11/005 ,  G01R33/561 ,  G01R33/5608 ,  G06T11/006 ,  A61B5/055

Abstract: Provided are a method and device for magnetic resonance parameter imaging, medical equipment, and a storage medium. The method comprises: performing acceleration sampling with respect to an image to be reconstructed of an observation target in a preset parameter direction to acquire K-space data corresponding to the image to be reconstructed, calculating, on the basis of the K-space data and of a parameter relaxation model, a parameter value and a compensation coefficient of the image to be reconstructed, generating, on the basis of the compensation coefficient, a compensation image corresponding to the image to be reconstructed, calculating, on the basis of the compensation image, respectively a low-rank part and a sparse part of the image to be reconstructed so as to update the compensation image.