首页> 外国专利> Method of obtaining image by Mr. a body placed in the volume of examination of a device Mr.Device for performing the method, and Mr. computer program to be executed in a device of Mr.

Method of obtaining image by Mr. a body placed in the volume of examination of a device Mr.Device for performing the method, and Mr. computer program to be executed in a device of Mr.

机译:通过放置在设备的检查体积中的身体先生来获取图像的方法,用于执行该方法的设备以及要在身体先生的设备中执行的计算机程序。

摘要

At least two gradient echo signals are generated at two different echo times by subjecting a portion of a body (10) in an MR examination region (1) to an imaging sequence of RF pulses and switched magnetic field gradients. The 0th moment of the readout magnetic field gradient essentially vanishes at the time of a first gradient echo while the 1st moment of the readout gradient is non-zero. Both the 0th and 1st moments of the readout magnetic field gradient essentially vanish at a time of a second gradient echo. Gradient echo signals are acquired. Acquiring the gradient echo signals is repeated for a plurality of phase encoding steps. A first MR image is reconstructed from the gradient echo signals of the first gradient echo and a second MR image is reconstructed from the gradient echo signals of the second gradient echo. Ghosting artefacts in the first and/or second MR image are identified by comparing the first and second MR images.
机译:通过使MR检查区域(1)中的身体(10)的一部分经受RF脉冲和切换磁场梯度的成像序列,在两个不同的回波时间产生至少两个梯度回波信号。在第一次梯度回波时,读出磁场梯度的第0矩基本上消失,而读出梯度的第1矩不为零。在第二次梯度回波时,读出磁场梯度的第0和第1力矩基本上都消失了。获取梯度回波信号。对于多个相位编码步骤,重复获取梯度回波信号。从第一梯度回波的梯度回波信号重建第一MR图像,并且从第二梯度回波的梯度回波信号重建第二MR图像。通过比较第一和第二MR图像来识别第一和/或第二MR图像中的重影伪影。

著录项

  • 公开/公告号BR112014015398A8

    专利类型

  • 公开/公告日2017-06-13

    原文格式PDF

  • 申请/专利权人 KONINKLIJKE PHILIPS N.V.;

    申请/专利号BR20141115398

  • 发明设计人 HOLGER EGGERS;PETER BÖRNERT;

    申请日2012-11-26

  • 分类号G01R33/565;

  • 国家 BR

  • 入库时间 2022-08-21 13:40:30

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