Determining diffusion tensors using magnetic resonance tomography scanners

    公开(公告)号:US10520574B2

    公开(公告)日:2019-12-31

    申请号:US15652682

    申请日:2017-07-18

    申请人: Peter Speier

    发明人: Peter Speier

    IPC分类号: G01V3/00 G01R33/563

    摘要: A magnetic resonance tomography scanner is provided for the determination a diffusion tensor of an examination object, and a method is provided for operating the magnetic resonance tomography scanner. The magnetic resonance tomography scanner acquires a volume image of the examination object by imaging magnetic resonance tomography without diffusion encoding. The control system segments the image according to diffusion-relevant symmetry properties and also determines volume elements of a symmetry group. A first and a second component of a diffusion tensor are acquired by the magnetic resonance tomography scanner at different angles and the control unit uses the symmetry property with the acquired components and the volume image to determine a diffusion tensor for the volume elements.

    Determination of a Measuring Sequence for a Magnetic Resonance System
    7.
    发明申请
    Determination of a Measuring Sequence for a Magnetic Resonance System 有权
    确定磁共振系统的测量顺序

    公开(公告)号:US20130200893A1

    公开(公告)日:2013-08-08

    申请号:US13757446

    申请日:2013-02-01

    IPC分类号: G01R33/54 G01R33/38

    摘要: A method and a measuring-sequence-determining device for determining a measuring sequence for a magnetic resonance system based on at least one intra-repetition-interval time parameter are provided. During the determination of the measuring sequence in a gradient-optimization method, gradient-pulse parameters of the measuring sequence are automatically optimized to reduce at least one gradient-pulse-parameter maximum value. As a boundary condition in the gradient-optimization method, the intra-repetition-interval time parameter is kept constant at least within a specified tolerance value.

    摘要翻译: 提供了一种用于基于至少一个重复间隔时间参数确定磁共振系统的测量序列的方法和测量序列确定装置。 在梯度优化方法中确定测量序列期间,自动优化测量序列的梯度脉冲参数以减少至少一个梯度脉冲参数最大值。 作为梯度优化方法中的边界条件,重复间隔时间参数至少保持在规定的公差值以内。