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    • 2. 发明申请
    • Method for processing a distortion-corrected 2d or 3d reconstruction image recorded by a magnetic resonance device
    • 用于处理由磁共振装置记录的失真校正的2d或3d重建图像的方法
    • US20090146657A1
    • 2009-06-11
    • US11989243
    • 2006-07-13
    • Franz HebrankThorsten SpecknerAxel vom Endt
    • Franz HebrankThorsten SpecknerAxel vom Endt
    • G01R33/565G06K9/40
    • G01R33/56518
    • In one embodiment of the present invention, a method for processing a 2D or 3D reconstruction image is disclosed which is recorded by a magnetic resonance device, including a gradient coil that generates a gradient field, and is distortion—corrected with regard to a given non-linearity—leading to an image distortion—of the gradient field using an algorithm that processes the measurement signals at different measurement points lying in the imaging volume, which algorithm, with respect to each signal processed by it, processes the first input value describing the real gradient field given at the real measurement point of the signal, in which method, for inverse transformation of the distortion-corrected reconstruction image into a distortion-uncorrected reconstruction image, use is made of the first algorithm or a second algorithm corresponding to the first algorithm, which, with respect to each signal processed by it, is given as second input value such a value which describes a fictitious gradient field at the respective distorted measurement point at which the processed signal appears, which is increased or decreased by the non-linear field component of the real gradient field compared with the linear ideal gradient field.
    • 在本发明的一个实施例中,公开了一种用于处理2D或3D重建图像的方法,其由磁共振装置记录,所述磁共振装置包括产生梯度场的梯度线圈,并且对于给定非对称 - 使用处理在成像体积中的不同测量点处的测量信号的算法,导致梯度场的图像失真,该算法相对于由其处理的每个信号处理描述第一输入值的第一输入值 在该信号的实际测量点处给出的实际梯度场,其中用于将失真校正的重建图像逆变换为失真未校正的重建图像,使用第一算法或对应于第一算法的第二算法 算法,其对于由其处理的每个信号,被给予为第二输入值,例如描述虚构的值 在经过处理的信号出现的相应变形的测量点处,与线性理想梯度场相比,实际梯度场的非线性场分量增加或减小。