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    • 5. 发明授权
    • Magnetic resonance imaging method using a partial parallel acquisition technique with non-Cartesian occupation of k-space
    • 磁共振成像方法采用部分并行采集技术与非笛卡尔占空比k空间
    • US07132827B2
    • 2006-11-07
    • US11126690
    • 2005-05-11
    • Mark GriswoldRobin HeidemannGunnar Krüger
    • Mark GriswoldRobin HeidemannGunnar Krüger
    • G01V3/00
    • G01R33/5611
    • In a method for magnetic resonance imaging using a partial parallel acquisition technique with a non-Cartesian occupation of k-space, a number of antennas disposed around an imaging volume for reception of magnetic resonance signals and the magnetic resonance signals in the imaging volume are spatially coded by magnetic gradient fields, such that k-space for each antenna is only incompletely occupied with magnetic resonance signals with at least one trajectory proceeding around the origin of k-space. From the reception signals of each antenna, missing sample values of the trajectory that lie on a straight-line segment extending from the origin are determined in k-space according to a weighting with weighting factors from sample values of the trajectory that likewise lie on the straight lines, such that each k-space is completely occupied. A partial image of the imaging area is generated from each completely occupied k-space by means of a Fourier transformation. An image of the imaging volume is generated from the partial images.
    • 在使用具有非笛卡尔k空间的部分并行捕获技术的磁共振成像方法中,设置在用于接收磁共振信号的成像体积周围的多个天线和成像体积中的磁共振信号在空间上 由磁梯度场编码,使得每个天线的k空间仅仅被磁共振信号完全占据,其中至少一个轨迹围绕k空间的原点进行。 根据每个天线的接收信号,根据来自同一位于同一位置的轨迹的样本值的加权因子的加权,在k空间中确定位于从原点延伸的直线段上的轨迹的缺失采样值 直线,使得每个k空间被完全占用。 通过傅里叶变换从每个完全占用的k空间生成成像区域的部分图像。 从部分图像生成成像体积的图像。
    • 6. 发明申请
    • Magnetic resonance imaging method using a partial parallel acquisition technique with non-cartesian occupation of k-space
    • 磁共振成像方法采用部分并行采集技术与非笛卡尔占空k空间
    • US20050264287A1
    • 2005-12-01
    • US11126690
    • 2005-05-11
    • Mark GriswoldRobin HeidemannGunnar Kruger
    • Mark GriswoldRobin HeidemannGunnar Kruger
    • G01R33/56G01R33/561G01V3/00
    • G01R33/5611
    • In a method for magnetic resonance imaging using a partial parallel acquisition technique with a non-Cartesian occupation of k-space, a number of antennas disposed around an imaging volume for reception of magnetic resonance signals and the magnetic resonance signals in the imaging volume are spatially coded by magnetic gradient fields, such that k-space for each antenna is only incompletely occupied with magnetic resonance signals with at least one trajectory proceeding around the origin of k-space. From the reception signals of each antenna, missing sample values of the trajectory that lie on a straight-line segment extending from the origin are determined in k-space according to a weighting with weighting factors from sample values of the trajectory that likewise lie on the straight lines, such that each k-space is completely occupied. A partial image of the imaging area is generated from each completely occupied k-space by means of a Fourier transformation. An image of the imaging volume is generated from the partial images.
    • 在使用具有非笛卡尔k空间的部分并行捕获技术的磁共振成像方法中,设置在用于接收磁共振信号的成像体积周围的多个天线和成像体积中的磁共振信号在空间上 由磁梯度场编码,使得每个天线的k空间仅仅被磁共振信号完全占据,其中至少一个轨迹围绕k空间的原点进行。 根据每个天线的接收信号,根据来自同一位于同一位置的轨迹的样本值的加权因子的加权,在k空间中确定位于从原点延伸的直线段上的轨迹的缺失采样值 直线,使得每个k空间被完全占用。 通过傅里叶变换从每个完全占用的k空间生成成像区域的部分图像。 从部分图像生成成像体积的图像。