首页> 外国专利> MAGNETIC RESONANCE IMAGING APPARATUS, MAGNETIC RESONANCE IMAGING METHOD, AND VERSE PULSE COMPRESSION RATE DETERMINATION METHOD

MAGNETIC RESONANCE IMAGING APPARATUS, MAGNETIC RESONANCE IMAGING METHOD, AND VERSE PULSE COMPRESSION RATE DETERMINATION METHOD

机译:磁共振成像装置,磁共振成像方法和反向脉冲压缩率测定方法

摘要

In order to improve image quality while reducing an SAR regardless of an imaging condition such as a slice position, a phase-encoding amount, and an RF pulse type difference, the VERSE method determines a VERSE pulse compression rate according to the imaging condition. Hence, an imaging sequence generation section generating an imaging sequence by applying an imaging condition to a predetermined pulse sequence and an imaging section executing measurement according to the imaging sequence to reconstruct an image from the obtained echo signal are provided. The pulse sequence includes a VERSE pulse comprised of a high-frequency magnetic field pulse and a slice selective gradient magnetic field pulse. The imaging sequence generation section is provided with a VERSE pulse design part determining a compression rate of the VERSE pulse according to the predetermined imaging condition and applies the determined compression rate to generate the imaging sequence.
机译:为了在不考虑诸如切片位置,相位编码量和RF脉冲类型差之类的成像条件的情况下减小SAR的同时提高图像质量,VERSE方法根据成像条件来确定VERSE脉冲压缩率。因此,提供了一种成像序列产生部分,该成像序列产生部分通过将成像条件施加于预定脉冲序列而产生成像序列,并且成像部分执行根据该成像序列的测量以从所获得的回波信号重构图像。脉冲序列包括由高频磁场脉冲和限幅选择性梯度磁场脉冲组成的VERSE脉冲。成像序列生成部分设置有VERSE脉冲设计部分,该VERSE脉冲设计部分根据预定的成像条件确定VERSE脉冲的压缩率,并施加确定的压缩率以生成成像序列。

著录项

  • 公开/公告号US2016131731A1

    专利类型

  • 公开/公告日2016-05-12

    原文格式PDF

  • 申请/专利权人 HITACHI MEDICAL CORPORATION;

    申请/专利号US201414896982

  • 发明设计人 KUNIHARU OKA;

    申请日2014-05-22

  • 分类号G01R33/561;G01R33/483;G01R33/28;

  • 国家 US

  • 入库时间 2022-08-21 14:39:02

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