公开(公告)号：US20050007113A1

公开(公告)日：2005-01-13

申请号：US10496388

申请日：2002-11-20

申请人： Romhild Hoogeveen ,  Frederik Visser ,  Lolkje Zoer ,  Willem Prins ,  Johan Van Den Brink

发明人： Romhild Hoogeveen ,  Frederik Visser ,  Lolkje Zoer ,  Willem Prins ,  Johan Van Den Brink

IPC分类号： A61B5/055 ,  G01R33/3415 ,  G01R33/54 ,  G01R33/561 ,  G01V3/00

CPC分类号： G01R33/4833 ,  G01R33/3415 ,  G01R33/5611

摘要： In a magnetic resonance imaging method magnetic resonance signal samples are received for a predetermined field of view by a receiving antenna having a spatial sensitivity profile. The sampling in the k space corresponds to the predetermined field of view in the geometrical space. Folded-over images having folded-over pixel values are reconstructed from the sampled magnetic resonance signals. Pixel contributions for spatial positions within the predetermined field of view are calculated from the folded-over pixel values and the spatial sensitivity profile of the receiver antenna. The magnetic resonance image is formed from the pixel contributions for spatial positions within the predetermined field of view. Thus, aliasing or fold-over artefacts caused by a field of view that is too small are avoided.

摘要翻译： 在磁共振成像方法中，通过具有空间灵敏度分布的接收天线，对于预定的视场来接收磁共振信号样本。 k空间中的采样对应于几何空间中的预定视场。 从采样的磁共振信号重建具有折叠像素值的折叠图像。 根据接收天线的折叠像素值和空间灵敏度曲线计算预定视场内的空间位置的像素贡献。 磁共振图像由预定视野内的空间位置的像素贡献形成。 因此，避免了由视场太小引起的混叠或折叠伪影。