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    COMPRESSED SENSING RECONSTRUCTION FOR MRI MULTI-SLICE AND MULTI-SLAB ACQUISITIONS
    3.
    发明公开
    COMPRESSED SENSING RECONSTRUCTION FOR MRI MULTI-SLICE AND MULTI-SLAB ACQUISITIONS 审中-公开
    压缩感测重建FÜRMRI-MEHRSCHICHT-在MEHRVOLUMEN-AKQUISITIONEN

    公开(公告)号：EP3026452A1

    公开(公告)日：2016-06-01

    申请号：EP15194865.0

    申请日：2015-11-17

    申请人： Siemens Healthcare GmbH

    发明人： MAILHE, Boris ,  NADAR, Mariappan S. ,  STALDER, Aurélien ,  WANG, Qiu ,  ZENGE, Michael

    IPC分类号： G01R33/561 ,  G01R33/483

    CPC分类号： G01R33/5608 ,  G01R33/4818 ,  G01R33/4835 ,  G01R33/5611

    摘要： A method for acquiring a three-dimensional image volume using a magnetic resonance imaging device includes performing a multi-slice or multi-slab acquisition process to acquire a plurality of slices or three-dimensional slabs corresponding to an imaged object. Each respective slice or three-dimensional slab included in the plurality of slices or three-dimensional slabs comprises k-space data. An iterative compressed-sensing reconstruction process is applied to jointly reconstruct the plurality of three-dimensional slabs as a single consistent volume. The iterative compressed-sensing reconstruction process solves a cost function comprising a summation of individual data fidelity terms corresponding to the plurality of three-dimensional slabs.

    摘要翻译： 使用磁共振成像装置获取三维图像体积的方法包括执行多切片或多板块获取处理以获取对应于成像对象的多个切片或三维平板。 包括在多个切片或三维平板中的每个相应切片或三维平板包括k空间数据。 应用迭代压缩感测重构过程将多个三维平板共同重建为单个一致的体积。 迭代压缩感测重建过程解决了包括对应于多个三维平板的单个数据保真度项的总和的成本函数。

    DICTIONARY-FREE MAGNETIC RESONANCE PARAMETER INFERENCE FOR FINGERPRINTING RECONSTRUCTION
    4.
    发明公开
    DICTIONARY-FREE MAGNETIC RESONANCE PARAMETER INFERENCE FOR FINGERPRINTING RECONSTRUCTION 审中-公开
    无指纹磁共振参数对指纹重建的影响

    公开(公告)号：EP3179263A1

    公开(公告)日：2017-06-14

    申请号：EP16203155.3

    申请日：2016-12-09

    申请人： Siemens Healthcare GmbH

    发明人： CHEN, Xiao ,  MAILHE, Boris ,  Nadar, Mariappan ,  WANG, Qiu

    IPC分类号： G01R33/50 ,  G01R33/54 ,  G01R33/56 ,  G01R33/48 ,  G01R33/563

    CPC分类号： G06T11/008 ,  G01R33/4824 ,  G01R33/50 ,  G01R33/54 ,  G01R33/543 ,  G01R33/56 ,  G01R33/5602 ,  G01R33/5608 ,  G01R33/56308 ,  G01R33/5635 ,  G06T2211/412

    摘要： A method of generating Magnetic Resonance (MR) parameter maps includes creating one or more parameter maps, each respective parameter map comprising initial parameter values associated with one of a plurality of MR parameters. A dynamical update process is performed over a plurality of time points. The dynamical update process performed at each respective time point includes applying a randomized pulse sequence to subject using an MR scanner to acquire a k-space dataset. This randomized pulse sequence is configured to excite a distinct range of values associated with the plurality of MR parameters. The dynamical update process further includes applying a reconstruction process to the k-space dataset to generate an image and using a tracking process to update the one or more parameter maps based on the randomized pulse sequence and the image.

    摘要翻译： 生成磁共振（MR）参数图的方法包括创建一个或多个参数图，每个相应的参数图包括与多个MR参数中的一个相关联的初始参数值。 动态更新过程在多个时间点上执行。 在每个相应的时间点执行的动态更新过程包括使用MR扫描仪向对象应用随机化脉冲序列以获取k空间数据集。 该随机脉冲序列被配置为激发与多个MR参数相关联的不同范围的值。 动态更新过程还包括对k空间数据集应用重构过程以生成图像并且使用跟踪过程基于随机化脉冲序列和图像来更新一个或多个参数图。