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    • 1. 发明公开
    • 자기 공명 영상 장치 및 자기 공명 영상 획득 방법
    • 磁共振成像装置和磁共振成像方法
    • KR1020180026207A
    • 2018-03-12
    • KR1020160113277
    • 2016-09-02
    • 삼성전자주식회사
    • 최준성김영범
    • A61B5/055G01R33/56
    • G01R33/5615G01R33/4818G01R33/561G01R33/5618G01R33/56518G01R33/56554A61B5/055G01R33/5602
    • 복수개의반복시간(TR)을포함하는다중에코펄스시퀀스를이용하여자기공명영상을획득하기위한장치가개시된다. 자기공명영상을획득하기위한장치는다중에코펄스시퀀스에기초하여획득된 MR 신호를저장하는메모리및 복수개의반복시간중 인접한두 개의반복시간에있어서, 제1 에코시간(TE1) 및제2 에코시간(TE2) 중적어도하나의값이상이하도록, 복수개의반복시간에포함된제1 에코시간및 제2 에코시간을결정하고, 복수개의반복시간동안, 결정된제1 에코시간및 결정된제2 에코시간을포함하는다중에코펄스시퀀스를제공하고, MR 신호에기초하여자기공명영상을획득하는영상처리부를포함할수 있다.
    • 公开了一种使用包括多个重复时间(TR)的多重回波脉冲序列来采集磁共振图像的设备。 用于获取磁共振图像的装置包括用于存储基于多回波脉冲序列获取的MR信号的存储器和用于存储第一回波时间(TE1)和第二回波时间 TE2)普遍地用于甚至一个,从而确定所述第一回波时间并且包括多个重复次数的第二回波时间,和多个重复的时间,其中包括所确定的第一回波时间和所确定的第二回波时间中的异常值 多回波脉冲序列以及用于基于MR信号采集磁共振图像的图像处理单元。
    • 7. 发明公开
    • 위상 보정 방법 및 MRI 시스템
    • 相位补偿方法和MRI装置
    • KR1020020077656A
    • 2002-10-12
    • KR1020020018434
    • 2002-04-04
    • 지이 메디컬 시스템즈 글로발 테크놀러지 캄파니 엘엘씨
    • 이케자키요시카즈
    • A61B5/055
    • G01R33/56554
    • PURPOSE: To correct body movement and a phase error caused by magnetic field nonuniformity. CONSTITUTION: Inverting lead gradients Nr1, Nr2 for data collection are applied, compensation data H (n, 1), H (n, 2) corresponding to focusing navigation echoes Ne1, Ne2 are collected, alternately inverting lead gradients r1,..., rM for data collection are applied in succession, phase encode gradients pdn, p2,..., pM are applied when inverting, and imaging data F (n, 1),..., F (n, M) corresponding to each focusing imaging echo e1,..., eM is collected. These procedures are repeated concerning n=1,..., N by changing a size of phase encode gradient pdn to collect data F (1, 1) to F (N, M) filling up a k space. Phases of the imaging data F (n, 1),..., F (n, M) are corrected based on the compensation data H (n, 1), H (n, 2).
    • 目的:纠正身体运动和由磁场不均匀引起的相位误差。 构成:采用反向引导梯度Nr1,Nr2进行数据采集,收集对应于聚焦导航回波Ne1,Ne2的补偿数据H(n,1),H(n,2),交替反转引导梯度r1,..., 用于数据采集的rM连续应用,反相时应用相位编码梯度pdn,p2,...,pM,对应于每个聚焦的成像数据F(n,1),...,F(n,M) 收集成像回波e1,...,eM。 通过改变相位编码梯度pdn的大小来收集关于n = 1,...,N的这些过程,以收集填充k空间的数据F(1,1)到F(N,M)。 基于补偿数据H(n,1),H(n,2)来校正成像数据F(n,1),...,F(n,M)的相位。
    • 10. 发明公开
    • 자기 공명 촬상 장치
    • 磁共振成像装置
    • KR1020040017777A
    • 2004-02-27
    • KR1020030057187
    • 2003-08-19
    • 지이 메디컬 시스템즈 글로발 테크놀러지 캄파니 엘엘씨
    • 이케자키요시카즈
    • A61B5/055
    • G01R33/56554G01R33/5611
    • PURPOSE: To perform parallel imaging even when navigator echo corrects phase shifts caused by imaging echo. CONSTITUTION: A magnetic resonance imaging apparatus acquires the imaging echo, generated by the spin caused by spin excitation in a subject, for the reduced field of view, with the navigator echo through a plurality of receiving systems(802), performs the phase correction of the imaging echo based on the navigator echo(804), produces intermediary images based on the imaging echo for the plurality of receiving systems after the phase correction(806), creates a sensitivity matrix on the plurality of receiving systems(808), corrects the phase of matrix data on the sensitivity matrix(810), and produces images of the complete field of view based on the intermediary images and the sensitivity matrix after the phase correction(812).
    • 目的:即使导航回波校正由成像回波引起的相移也执行并行成像。 构成:通过多个接收系统(802)的导航回波,磁共振成像装置获取由被摄体中的自旋激发引起的旋转产生的成像回波,以减少视野,进行相位校正 基于导航回波(804)的成像回波在相位校正之后产生基于多个接收系统的成像回波(806)的中间图像,在多个接收系统(808)上创建灵敏度矩阵,校正 (810)上的矩阵数据的相位,并且基于中间图像和相位校正后的灵敏度矩阵产生完整视场的图像(812)。