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    MAGNETIC RESONANCE APPARATUS WITH A BASIC FIELD MAGNET FORMED BY AT LEAST TWO SEPARATED MAGNETIC COILS
    4.
    发明申请
    MAGNETIC RESONANCE APPARATUS WITH A BASIC FIELD MAGNET FORMED BY AT LEAST TWO SEPARATED MAGNETIC COILS 有权
    具有至少两个分离磁线圈形成的基本磁场的磁共振装置

    公开(公告)号：US20120153953A1

    公开(公告)日：2012-06-21

    申请号：US13326672

    申请日：2011-12-15

    申请人： David Grodzki ,  Bjoern Heismann ,  Sebastian Schmidt

    发明人： David Grodzki ,  Bjoern Heismann ,  Sebastian Schmidt

    IPC分类号： G01R33/44

    CPC分类号： G01R33/3806 ,  G01R33/34007 ,  G01R33/381 ,  G01R33/385

    摘要： A magnetic resonance apparatus for examination in THE teeth and/or jaw region of a patient has at least one basic magnet to generate a constant basic magnetic field. The basic magnet is formed at least in part from at least one magnetic coil pair with at least two magnetic coils, and the at least one magnetic coil pair generates the basic magnetic field with a homogeneous magnetic field region between the at least two magnetic coils thereof.

    摘要翻译： 用于在患者的牙齿和/或颌部区域进行检查的磁共振装置具有至少一个基本磁体以产生恒定的基本磁场。 基本磁体至少部分地由至少一个具有至少两个磁性线圈的电磁线圈对形成，并且所述至少一个磁线圈对在其至少两个磁性线圈之间产生具有均匀磁场区域的基本磁场 。

    Method and magnetic resonance apparatus to generate a series of MR images to monitor a position of an interventional device
    6.
    发明授权
    Method and magnetic resonance apparatus to generate a series of MR images to monitor a position of an interventional device 有权
    用于产生一系列MR图像以监测介入装置的位置的方法和磁共振装置

    公开(公告)号：US09320454B2

    公开(公告)日：2016-04-26

    申请号：US13630155

    申请日：2012-09-28

    申请人： David Grodzki ,  Bjoern Heismann ,  Sebastian Schmidt

    发明人： David Grodzki ,  Bjoern Heismann ,  Sebastian Schmidt

    IPC分类号： A61B5/06 ,  G01R33/28 ,  G01R33/48 ,  A61B19/00 ,  A61B5/055

    CPC分类号： A61B5/062 ,  A61B5/055 ,  A61B34/20 ,  A61B2034/2065 ,  A61B2090/374 ,  G01R33/286 ,  G01R33/4816 ,  G01R33/4824

    摘要： In a magnetic resonance (MR) method and system to generate a series of MR images to monitor the position of an interventional device located in an examination region, radial scanning of k-space is combined with other scans, in particular for the k-space center. The measurement time until the entirety of k-space corresponding to the imaging region is scanned is thereby markedly shortened in total. The short echo times that are possible with this reduce susceptibility artifacts in the reconstructed image data and enable a depiction of tissue or substances with very short T2 values, for example plastics. Due to the rapidly repeated excitation and acquisition of measurement data and the reconstruction of image data, it is possible to monitor a position of the intervention device in the examination region.

    摘要翻译： 在用于产生一系列MR图像以监测位于检查区域中的介入装置的位置的磁共振（MR）方法和系统中，k空间的径向扫描与其他扫描结合，特别是与k空间 中央。 因此，扫描对应于成像区域的整个k空间的测量时间总共显着缩短。 可能的短回波时间可以减少重建图像数据中的敏感性伪影，并且能够描绘具有非常短T2值的组织或物质，例如塑料。 由于测量数据的快速反复激发和获取以及图像数据的重建，可以监视干预装置在检查区域中的位置。

    METHOD AND MAGNETIC RESONANCE APPARATUS TO GENERATE A SERIES OF MR IMAGES TO MONITOR A POSITION OF AN INTERVENTIONAL DEVICE
    7.
    发明申请
    METHOD AND MAGNETIC RESONANCE APPARATUS TO GENERATE A SERIES OF MR IMAGES TO MONITOR A POSITION OF AN INTERVENTIONAL DEVICE 有权
    用于生成一系列MR图像以监测传统装置的位置的方法和磁共振装置

    公开(公告)号：US20130076357A1

    公开(公告)日：2013-03-28

    申请号：US13630155

    申请日：2012-09-28

    申请人： David Grodzki ,  Bjoern Heismann ,  Sebastian Schmidt

    发明人： David Grodzki ,  Bjoern Heismann ,  Sebastian Schmidt

    IPC分类号： G01R33/44

    CPC分类号： A61B5/062 ,  A61B5/055 ,  A61B34/20 ,  A61B2034/2065 ,  A61B2090/374 ,  G01R33/286 ,  G01R33/4816 ,  G01R33/4824

    摘要： In a magnetic resonance (MR) method and system to generate a series of MR images to monitor the position of an interventional device located in an examination region, radial scanning of k-space is combined with other scans, in particular for the k-space center. The measurement time until the entirety of k-space corresponding to the imaging region is scanned is thereby markedly shortened in total. The short echo times that are possible with this reduce susceptibility artifacts in the reconstructed image data and enable a depiction of tissue or substances with very short T2 values, for example plastics. Due to the rapidly repeated excitation and acquisition of measurement data and the reconstruction of image data, it is possible to monitor a position of the intervention device in the examination region.

    摘要翻译： 在用于产生一系列MR图像以监测位于检查区域中的介入装置的位置的磁共振（MR）方法和系统中，k空间的径向扫描与其他扫描结合，特别是与k空间 中央。 因此，扫描对应于成像区域的整个k空间的测量时间总共显着缩短。 可能的短回波时间可以减少重建图像数据中的敏感性伪影，并且能够描绘具有非常短的T2值的组织或物质，例如塑料。 由于测量数据的快速反复激发和获取以及图像数据的重建，可以监视干预装置在检查区域中的位置。

    METHOD AND APPARATUS FOR CORRECTION OF ARTIFACTS IN MAGNETIC RESONANCE IMAGES
    8.
    发明申请
    METHOD AND APPARATUS FOR CORRECTION OF ARTIFACTS IN MAGNETIC RESONANCE IMAGES 有权
    用于校正磁共振图像中的人造物的方法和装置

    公开(公告)号：US20130101198A1

    公开(公告)日：2013-04-25

    申请号：US13656932

    申请日：2012-10-22

    申请人： David Grodzki ,  Bjoern Heismann

    发明人： David Grodzki ,  Bjoern Heismann

    IPC分类号： G06K9/00

    CPC分类号： A61K48/00 ,  A61B5/055 ,  A61B5/7203 ,  G01R33/48 ,  G01R33/4816 ,  G01R33/565 ,  G06F17/16

    摘要： In a method and apparatus for the correction of artifacts in magnetic resonance images (MR) acquired with an MR pulse sequence in which gradients are switched simultaneously during the radiation of at least one non-selective excitation pulse, measurement data acquired with the pulse sequence in k-space are loaded into a processor, in which a perturbation matrix is determined on the basis of spatial and k-space point data of the acquired measurement data and the gradients used during the excitation. A corrected image is calculated from the acquired measurement data in k-space and the perturbation matrix, with the calculation of the corrected image including a matrix inversion of the perturbation matrix. The corrected image is then stored or displayed.

    摘要翻译： 在用于在至少一个非选择性激励脉冲的辐射期间同时切换梯度的MR脉冲序列获取的磁共振图像（MR）中的伪影的校正方法和装置中，以脉冲序列获取的测量数据 k空间被加载到处理器中，其中基于所获取的测量数据的空间和k空间点数据以及在激励期间使用的梯度来确定扰动矩阵。 根据所获取的k空间测量数据和扰动矩阵计算校正图像，校正图像的计算包括扰动矩阵的矩阵求逆。 然后存储或显示校正后的图像。

    Method and apparatus for correction of artifacts in magnetic resonance images
    9.
    发明授权
    Method and apparatus for correction of artifacts in magnetic resonance images 有权
    用于校正磁共振图像中伪像的方法和装置

    公开(公告)号：US09101659B2

    公开(公告)日：2015-08-11

    申请号：US13656932

    申请日：2012-10-22

    申请人： David Grodzki ,  Bjoern Heismann

    发明人： David Grodzki ,  Bjoern Heismann

    IPC分类号： G06K9/00 ,  A61K48/00 ,  G01R33/48 ,  G01R33/565 ,  G06F17/16

    CPC分类号： A61K48/00 ,  A61B5/055 ,  A61B5/7203 ,  G01R33/48 ,  G01R33/4816 ,  G01R33/565 ,  G06F17/16

    摘要： In a method and apparatus for the correction of artifacts in magnetic resonance images (MR) acquired with an MR pulse sequence in which gradients are switched simultaneously during the radiation of at least one non-selective excitation pulse, measurement data acquired with the pulse sequence in k-space are loaded into a processor, in which a perturbation matrix is determined on the basis of spatial and k-space point data of the acquired measurement data and the gradients used during the excitation. A corrected image is calculated from the acquired measurement data in k-space and the perturbation matrix, with the calculation of the corrected image including a matrix inversion of the perturbation matrix. The corrected image is then stored or displayed.

    摘要翻译： 在用于在至少一个非选择性激励脉冲的辐射期间同时切换梯度的MR脉冲序列获取的磁共振图像（MR）中的伪影的校正方法和装置中，以脉冲序列获取的测量数据 k空间被加载到处理器中，其中基于所获取的测量数据的空间和k空间点数据以及在激励期间使用的梯度来确定扰动矩阵。 根据所获取的k空间测量数据和扰动矩阵计算校正图像，校正图像的计算包括扰动矩阵的矩阵求逆。 然后存储或显示校正后的图像。

    Magnetic resonance method and system to generate an image data set
    10.
    发明授权
    Magnetic resonance method and system to generate an image data set 有权
    磁共振法和系统生成图像数据集

    公开(公告)号：US08878533B2

    公开(公告)日：2014-11-04

    申请号：US13245191

    申请日：2011-09-26

    申请人： David Grodzki ,  Bjoern Heismann

    发明人： David Grodzki ,  Bjoern Heismann

    IPC分类号： G01R33/48 ,  G01R33/34 ,  A61B5/055

    CPC分类号： G01R33/4824 ,  A61B5/055

    摘要： In a magnetic resonance system and method the imaging area is readout by: (a) switching at least two phase coding gradients in respective spatial directions, (b) at the full strength of the phase coding gradients, radiating a non-slice-selective RF excitation pulse, (c) after a time t1 after the last radiated excitation pulse, acquiring echo signals entered as raw data points along the radial k-space trajectory predetermined by the strength of the phase coding gradients, (d) repeating (a) through (c) with different phase coding gradients until k-space corresponding to the imaging area is read out in a first region along radial k-space trajectories, depending on the time t1, and (e) reading out a remainder of k-space that corresponds to the imaging area, that is not covered by the first region of k-space and includes the k-space center, in a different manner than by (a) through (d).

    摘要翻译： 在磁共振系统和方法中，成像区域通过以下方式读出：（a）在各个空间方向上切换至少两个相位编码梯度，（b）在相位编码梯度的全强度下，辐射非切片选择性RF 励磁脉冲，（c）在最后辐射激励脉冲之后的时间t1之后，获取沿着相位编码梯度的强度预定的径向k空间轨迹作为原始数据点输入的回波信号，（d）重复（a）到 （c）具有不同的相位编码梯度，直到根据时间t1在沿着径向k空间轨迹的第一区域中读出对应于成像区域的k空间，以及（e）读出剩余的k空间， 对应于与（a）至（d）不同的方式，不是由k空间的第一区域覆盖并且包括k空间中心的成像区域。