公开(公告)号：US08760163B2

公开(公告)日：2014-06-24

申请号：US13104194

申请日：2011-05-10

申请人： Robert Frost ,  Peter Jezzard ,  Karla Miller ,  David Andrew Porter

发明人： Robert Frost ,  Peter Jezzard ,  Karla Miller ,  David Andrew Porter

IPC分类号： G01V3/00

CPC分类号： G01R33/56341 ,  G01R33/56536 ,  G01R33/5676

摘要： In a magnetic resonance apparatus and operating method therefore, 3D navigator data are acquired and are used to correct spatially varying phase errors in contemporaneously acquired imaging data in each shot of a multi-shot data acquisition sequence. A mosaic sampling scheme is used to enter the diffusion-weighted magnetic resonance data and the navigator data into k-space respectively in blocks that each form a subset of the entirety of k-space. The navigator data in each shot are entered into a block that is located at the center of k-space, and, in each shot, the corresponding image data are entered into an offset block in k-space, that is offset in at least one spatial direction from the navigator data block. The offset is varied from shot-to-shot.

摘要翻译： 因此，在磁共振装置和操作方法中，获取3D导航仪数据，并用于校正多次拍摄数据采集序列的每次拍摄中同时获取的成像数据中的空间变化相位误差。 马赛克采样方案用于分别以每个形成整个k空间的子集的块将漫射加权磁共振数据和导航器数据输入k空间。 每个镜头中的导航器数据被输入到位于k空间中心的块中，并且在每个镜头中，相应的图像数据被输入到k空间中的偏移块中，其在至少一个 导航器数据块的空间方向。 偏移量从射击到射击不同。

公开(公告)号：US20120286777A1

公开(公告)日：2012-11-15

申请号：US13104194

申请日：2011-05-10

申请人： Robert Frost ,  Peter Jezzard ,  Karla Miller ,  David Andrew Porter

发明人： Robert Frost ,  Peter Jezzard ,  Karla Miller ,  David Andrew Porter

IPC分类号： G01R33/44

CPC分类号： G01R33/56341 ,  G01R33/56536 ,  G01R33/5676

摘要： In a magnetic resonance apparatus and operating method therefore, 3D navigator data are acquired and are used to correct spatially varying phase errors in contemporaneously acquired imaging data in each shot of a multi-shot data acquisition sequence. A mosaic sampling scheme is used to enter the diffusion-weighted magnetic resonance data and the navigator data into k-space respectively in blocks that each form a subset of the entirety of k-space. The navigator data in each shot are entered into a block that is located at the center of k-space, and, in each shot, the corresponding image data are entered into an offset block in k-space, that is offset in at least one spatial direction from the navigator data block. The offset is varied from shot-to-shot.

摘要翻译： 因此，在磁共振装置和操作方法中，获取3D导航仪数据，并用于校正多次拍摄数据采集序列的每次拍摄中同时获取的成像数据中的空间变化相位误差。 马赛克采样方案用于分别以每个形成整个k空间的子集的块将漫射加权磁共振数据和导航器数据输入k空间。 每个镜头中的导航器数据被输入到位于k空间中心的块中，并且在每个镜头中，相应的图像数据被输入到k空间中的偏移块中，其在至少一个 导航器数据块的空间方向。 偏移量从射击到射击不同。