公开(公告)号：US20150084627A1

公开(公告)日：2015-03-26

申请号：US14009116

申请日：2012-04-18

申请人： Wofgang Ruhm ,  Johannes Schneider ,  Peter Ullmann

发明人： Wofgang Ruhm ,  Johannes Schneider ,  Peter Ullmann

IPC分类号： G01R33/483 ,  G01R33/24 ,  G01R33/385 ,  G01R33/561

CPC分类号： G01R33/4833 ,  A61B5/055 ,  G01R33/246 ,  G01R33/385 ,  G01R33/4836 ,  G01R33/561 ,  G01R33/5612

摘要： A method for determining the spatial distribution of magnetic resonance signals from at least one of N subvolumes predefines a reception encoding scheme and determines unique spatial encoding for at least one of the subvolumes but not for the entire volume under examination (UV). A transmission encoding scheme is also defined, wherein encoding is effected via the amplitude and/or phase of the transverse magnetization. The temporal amplitude and phase profile of the RF pulses is then calculated and each reception encoding step is carried out I times with variations according to the I transmission encoding steps in the transmission encoding scheme. The method makes it possible to largely restrict the spatially resolving MR signal encoding and image reconstruction to subvolumes of the object under examination without the achievable image quality sensitively depending on imperfections in the MR apparatus.

摘要翻译： 用于确定来自N个子卷中的至少一个的磁共振信号的空间分布的方法预先定义接收编码方案，并且确定至少一个子卷的唯一的空间编码，而不是对于检查中的整个体积（UV）。 还定义了传输编码方案，其中通过横向磁化的幅度和/或相位实现编码。 然后计算RF脉冲的时间幅度和相位曲线，并且根据传输编码方案中的I传输编码步骤，根据变化执行每个接收编码步骤I次。 该方法使得可以根据MR设备中的缺陷，将空间分辨的MR信号编码和图像重建大大地限制在被检查物体的子体积上，而不会使可实现的图像质量敏感。