公开(公告)号：US20120013336A1

公开(公告)日：2012-01-19

申请号：US13257091

申请日：2009-03-31

申请人： Stefan Hetzer ,  Toralf Mildner ,  Harald Moeller

发明人： Stefan Hetzer ,  Toralf Mildner ,  Harald Moeller

IPC分类号： G01R33/54 ,  G01R33/28

CPC分类号： G01R33/5616 ,  G01R33/4806 ,  G01R33/4818 ,  G01R33/482 ,  G01R33/4828 ,  G01R33/483 ,  G01R33/485 ,  G01R33/5607 ,  G01R33/56341 ,  G01R33/56366 ,  G01R33/56536 ,  G01R33/56554 ,  G01R33/56563

摘要： A method of magnetic resonance imaging of an object comprises the steps of arranging the object in a stationary magnetic field, subjecting the object to an excitation and encoding sequence of magnetic field gradients resulting in k-space sampling in two segments along the phase encoding direction, wherein the encoding sequence of the magnetic field gradients is selected such that the two segments in k-space are sampled along trajectories beginning with a central k-space line through the k-space center and continuing to opposite k-space borders of the two segments, collecting magnetic resonance signals created in the object, and reconstructing an image of the object based on the magnetic resonance signals, wherein one central k-space line is sampled in both of the two k-space segments, and intersegment phase and/or intensity deviations are corrected in both k-space segments using the magnetic resonance signals collected along the central k-space line. Furthermore, an imaging device for magnetic resonance imaging of an object is described.

摘要翻译： 物体的磁共振成像的方法包括以下步骤：将物体放置在固定磁场中，使物体受到磁场梯度的激励和编码序列的影响，导致沿着相位编码方向的两段中的k空间采样， 其中选择磁场梯度的编码序列使得k空间中的两个片段沿着通过k空间中心的中心k空间线开始的轨迹被采样，并且连续到两个片段的相反k空间边界 收集在物体中产生的磁共振信号，以及基于磁共振信号重建物体的图像，其中一个中心k空间线在两个k空间段中的两个采样，并且分段相位和/或强度 使用沿着中心k空间线收集的磁共振信号在两个k空间段中校正偏差。 此外，描述了用于物体的磁共振成像的成像装置。

公开(公告)号：US08664954B2

公开(公告)日：2014-03-04

申请号：US13257091

申请日：2009-03-31

申请人： Stefan Hetzer ,  Toralf Mildner ,  Harald Moeller

发明人： Stefan Hetzer ,  Toralf Mildner ,  Harald Moeller

IPC分类号： G01V3/00

CPC分类号： G01R33/5616 ,  G01R33/4806 ,  G01R33/4818 ,  G01R33/482 ,  G01R33/4828 ,  G01R33/483 ,  G01R33/485 ,  G01R33/5607 ,  G01R33/56341 ,  G01R33/56366 ,  G01R33/56536 ,  G01R33/56554 ,  G01R33/56563

摘要： A method of magnetic resonance imaging of an object comprises the steps of arranging the object in a stationary magnetic field, subjecting the object to an excitation and encoding sequence of magnetic field gradients resulting in k-space sampling in two segments along the phase encoding direction, wherein the encoding sequence of the magnetic field gradients is selected such that the two segments in k-space are sampled along trajectories beginning with a central k-space line through the k-space center and continuing to opposite k-space borders of the two segments, collecting magnetic resonance signals created in the object, and reconstructing an image of the object based on the magnetic resonance signals, wherein one central k-space line is sampled in both of the two k-space segments, and intersegment phase and/or intensity deviations are corrected in both k-space segments using the magnetic resonance signals collected along the central k-space line. Furthermore, an imaging device for magnetic resonance imaging of an object is described.

摘要翻译： 物体的磁共振成像的方法包括以下步骤：将物体放置在固定磁场中，使物体受到磁场梯度的激励和编码序列的影响，导致沿着相位编码方向的两段中的k空间采样， 其中选择磁场梯度的编码序列使得k空间中的两个片段沿着通过k空间中心的中心k空间线开始的轨迹被采样，并且连续到两个片段的相反k空间边界 收集在物体中产生的磁共振信号，以及基于磁共振信号重建物体的图像，其中一个中心k空间线在两个k空间段中的两个采样，并且分段相位和/或强度 使用沿着中心k空间线收集的磁共振信号在两个k空间段中校正偏差。 此外，描述了用于物体的磁共振成像的成像装置。

公开(公告)号：US20120313641A1

公开(公告)日：2012-12-13

申请号：US13522696

申请日：2010-01-18

申请人： Christian Labadie ,  Stefan Hetzer ,  Toralf Mildner ,  Harald Moeller

发明人： Christian Labadie ,  Stefan Hetzer ,  Toralf Mildner ,  Harald Moeller

IPC分类号： G01R33/56 ,  G01R33/34

CPC分类号： G01R33/485 ,  G01R33/4818 ,  G01R33/482 ,  G01R33/5611 ,  G01R33/5616

摘要： A method of magnetic resonance spectroscopic imaging of an object (O) including at least one chemical species to be imaged, comprising sampling of the k-space such that a plurality of Nω first sampling trajectories through at least one k-space segment of the k-space is formed along a phase-encoding direction, each of said first sampling trajectories beginning in a central k-space region and continuing to a k-space border of the at least one k-space segment and having a duration equal to or below a spectral dwell time corresponding to the reciprocal spectral bandwidth, collecting at least one first set of gradient-echo signals obtained along said first sampling trajectories, collecting at least one second set of gradient-echo signals obtained along a plurality of Nω second sampling trajectories, said Nω second sampling trajectories and said Nω first sampling trajectories being mutually mirrored relative to a predetermined k-space line in the central k-space region.

摘要翻译： 包括至少一种待成像化学物质的物体（O）的磁共振光谱成像方法，包括k空间的采样，使得多个Nω第一采样轨迹通过k的至少一个k空间段 - 空间沿着相位编码方向形成，所述第一采样轨迹中的每一个从中心k空间区域开始并且连续至少一个k空间段的k空间边界并具有等于或低于 收集对应于所述倒数光谱带宽的光谱驻留时间，收集沿着所述第一采样轨迹获得的至少一个第一梯度回波信号集合，收集沿着多个Nω第二采样轨迹获得的至少一个第二组梯度回波信号， 所述Nω第二采样轨迹和所述Nω第一采样轨迹相对于中心k空间区域中的预定k空间线相互镜像。

公开(公告)号：US09234953B2

公开(公告)日：2016-01-12

申请号：US13522696

申请日：2010-01-18

申请人： Christian Labadie ,  Stefan Hetzer ,  Toralf Mildner ,  Harald Moeller

发明人： Christian Labadie ,  Stefan Hetzer ,  Toralf Mildner ,  Harald Moeller

IPC分类号： G01R33/56 ,  G01R33/34 ,  G01R33/485 ,  G01R33/48 ,  G01R33/561

CPC分类号： G01R33/485 ,  G01R33/4818 ,  G01R33/482 ,  G01R33/5611 ,  G01R33/5616

摘要： A method of magnetic resonance spectroscopic imaging of an object (O) including at least one chemical species to be imaged, comprising sampling of the k-space such that a plurality of Nω first sampling trajectories through at least one k-space segment of the k-space is formed along a phase-encoding direction, each of said first sampling trajectories beginning in a central k-space region and continuing to a k-space border of the at least one k-space segment and having a duration equal to or below a spectral dwell time corresponding to the reciprocal spectral bandwidth, collecting at least one first set of gradient-echo signals obtained along the first sampling trajectories, collecting at least one second set of gradient-echo signals obtained along a plurality of Nω second sampling trajectories, the Nω second sampling trajectories and the Nω first sampling trajectories being mutually mirrored relative to a predetermined k-space line in the central k-space region.

摘要翻译： 包括至少一种待成像化学物质的物体（O）的磁共振光谱成像方法，包括k空间的采样，使得多个Nω第一采样轨迹通过k的至少一个k空间段 - 空间沿着相位编码方向形成，所述第一采样轨迹中的每一个从中心k空间区域开始并且连续至少一个k空间段的k空间边界并具有等于或低于 收集对应于所述倒数光谱带宽的光谱驻留时间，收集沿着所述第一采样轨迹获得的至少一个第一梯度回波信号集合，收集沿着多个Nω第二采样轨迹获得的至少一个第二组梯度回波信号， Nω第二采样轨迹和Nω第一采样轨迹相对于中心k空间区域中的预定k空间线相互镜像。