会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 53. 发明授权
    • Method and magnetic resonance system to generate an MR image with a tracking factor
    • 方法和磁共振系统生成具有跟踪因子的MR图像
    • US09354290B2
    • 2016-05-31
    • US13410632
    • 2012-03-02
    • Andreas Greiser
    • Andreas Greiser
    • A61B5/00G01R33/567A61B5/055G01R33/563
    • G01R33/5676A61B5/055A61B5/7289A61B2576/023G01R33/5635
    • For the generation of a magnetic resonance (MR) image of a predetermined volume segment of a living subject, a tracking factor is determined for each of different regions of the volume segment, from which the position of the respective region can be determined depending on a position of a moving area of the subject. MR image data of the volume segment are acquired for different positions of the moving area. The position of the moving area is calculated depending on the position and the tracking factor of the respective region, and the MR image data of the respective region are reconstructed using the MR image data of the volume segment corresponding to the calculated position of the moving area. The MR image of the predetermined volume segment is generated as a combination of the constructed MR image data of the regions.
    • 为了生成活体的预定体积段的磁共振(MR)图像,针对体积段的不同区域中的每一个确定跟踪因子,根据该区域可以确定各个区域的位置 受试者的移动区域的位置。 针对移动区域的不同位置获取体积段的MR图像数据。 根据相应区域的位置和跟踪因子来计算移动区域的位置,并且使用与计算的移动区域的位置对应的体积段的MR图像数据来重建各个区域的MR图像数据 。 作为该区域的构成的MR图像数据的组合生成预定体积段的MR图像。
    • 55. 发明授权
    • Method and magnetic resonance system to automatically determine parameters of a flow measurement
    • 方法和磁共振系统自动确定流量测量参数
    • US08957682B2
    • 2015-02-17
    • US13410687
    • 2012-03-02
    • Andreas Greiser
    • Andreas Greiser
    • G01V3/00G01R33/563G01R33/565
    • G01R33/56316G01R33/5635G01R33/56518
    • In a method and a magnetic resonance system to automatically determine parameters of a phase contrast flow measurement, a phase contrast pre-measurement with a flow coding sequence is implemented in a predetermined volume segment of an examination subject, and the flow coding sequence is varied in terms of its parameters so that a pre-measurement is respectively implemented for multiple different parameter sets of the flow coding sequence. A model is automatically determined with which a dimension of a phase error can be determined for each parameter set in the flow measurement, in that phase values of the pre-measurement which is implemented with the flow coding sequence with the respective parameter set are analyzed. Those parameters of the flow measurement at which the dimension of the phase error is smallest are automatically determined.
    • 在自动确定相差测量的参数的方法和磁共振系统中,在检查对象的预定体积段中实施具有流程编码序列的相位对比度预测量,并且流程编码序列在 其参数的条件,以便针对流编码序列的多个不同参数集分别实现预测量。 自动确定在流量测量中为每个参数集确定相位误差的维度的模型,分析用具有相应参数集的流程编码序列实现的预测量的相位值。 自动确定相位误差尺寸最小的流量测量的这些参数。
    • 59. 发明授权
    • System for adjusting a magnetic field for MR and other use
    • 用于MR调整磁场的系统及其他用途
    • US08138759B2
    • 2012-03-20
    • US12577644
    • 2009-10-12
    • Andreas GreiserRenate JerecicPeter KellmanSaurabh ShahPeter WealeSven Zuehlsdorff
    • Andreas GreiserRenate JerecicPeter KellmanSaurabh ShahPeter WealeSven Zuehlsdorff
    • G01V3/00
    • G01R33/3875G01R33/4828G01R33/543G01R33/56563G01R33/5673
    • An MR magnetic field inhomogeneity compensation system acquires multiple MR data sets representing luminance intensity values of individual image elements comprising corresponding multiple different image versions of at least a portion of a first imaging slice of patient anatomy including fat and water components. The compensation system employs the multiple MR data sets in solving corresponding multiple simultaneous nonlinear equations to calculate local frequency offset associated with magnetic field inhomogeneity at the individual image element location, for an individual image element of the image elements. The local frequency offset comprises a difference between proton spin frequency at the location and a nominal proton spin frequency. The compensation system derives data representing an electrical signal to be applied to magnetic field generation coils to substantially compensate for determined offset frequencies at the plurality of individual locations. A magnetic field generation coil generates a magnetic field in response to applying the electrical signal to substantially compensate for the magnetic field inhomogeneity at the individual image element location.
    • MR磁场不均匀性补偿系统获取多个MR数据集,其表示包括脂肪和水分量的患者解剖结构的第一成像切片的至少一部分的相应多个不同图像形式的各个图像元素的亮度强度值。 补偿系统采用多个MR数据集来解决相应的多个同时非线性方程,以计算与图像元素的单个图像元素相关联的与个体图像元素位置处的磁场不均匀性相关的局部频率偏移。 本地频率偏移包括位置处的质子自旋频率与标称质子自旋频率之间的差异。 补偿系统导出表示要施加到磁场产生线圈的电信号的数据,以基本上补偿多个单独位置处的确定的偏移频率。 磁场产生线圈响应于施加电信号而产生磁场,以基本上补偿各个图像元件位置处的磁场不均匀性。