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2. 发明申请

US20120169339A1 MAGNETIC RESONANCE IMAGING APPARATUS AND GRADIENT MAGNETIC FIELD APPLICATION METHOD 有权
标题翻译：磁共振成像装置和梯度磁场应用方法
公开(公告)号：US20120169339A1
公开(公告)日：2012-07-05
申请号：US13393319
申请日：2010-09-10
申请人： Yoshiyuki Kunugi , Takashi Nishihara
发明人： Yoshiyuki Kunugi , Takashi Nishihara
IPC分类号： G01R33/48 , G01R33/381
CPC分类号： G01R33/56509
摘要： In order to obtain the rephasing effect based on a GMN method while reducing the load on the hardware of an MRI apparatus and an object according to the imaging parameter setting value that an operator wants, when it is difficult to apply a rephasing gradient magnetic field of a predetermined order according to the imaging parameter value set as input, a rephasing gradient magnetic field of a smaller amount of application is calculated, and at least some echo signals are measured using the calculated rephasing gradient magnetic field of the smaller amount of application. As the rephasing gradient magnetic field of the smaller amount of application, a rephasing gradient magnetic field with a lower order than the predetermined order is used or a rephasing gradient magnetic field for asymmetric measurement is used. Alternatively, a rephasing gradient magnetic field is applied only in a desired phase encoding range.
摘要翻译：为了获得基于GMN方法的重新定位效果，同时根据操作者想要的成像参数设定值减小MRI装置和物体的硬件的负载，当难以应用复原梯度磁场根据设置为输入的成像参数值的预定顺序，计算较小应用量的再相位梯度磁场，并且使用所计算的较小应用量的重新相位梯度磁场来测量至少一些回波信号。作为施加量较小的重合相梯度磁场，使用比预定次序低的重定相梯度磁场，或者使用用于非对称测量的重合相梯度磁场。或者，仅在期望的相位编码范围中施加再相位梯度磁场。

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