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公开(公告)号：US09095272B2
公开(公告)日：2015-08-04
申请号：US12629485
申请日：2009-12-02
申请人： Hans-Peter Fautz
发明人： Hans-Peter Fautz
IPC分类号： A61B5/05 , A61B5/055 , A61B5/02 , G01R33/563 , G01R33/483 , G01R33/56
CPC分类号： A61B5/055 , A61B5/02007 , G01R33/4835 , G01R33/5601 , G01R33/5635
摘要： In a method to excite a magnetization in the generation of MR angiography images with the TOF technique, a slice plane is determined in which the magnetization for the generation of the MR angiography images should be excited, a position of a vessel in the slice plane is determined, and the magnetization is excited in the slice plane such that the magnetization in the vessel has a flip angle gradient in the direction of the vessel.
摘要翻译： 在利用TOF技术产生MR血管造影图像中激发磁化的方法中，确定切片平面，其中用于产生MR血管造影图像的磁化应被激发，切片平面中的血管的位置为 并且在切片平面中激发磁化，使得容器中的磁化在容器的方向上具有翻转角度梯度。
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公开(公告)号：US20150022203A1
公开(公告)日：2015-01-22
申请号：US13956318
申请日：2013-07-31
IPC分类号： G01R33/36
CPC分类号： G01R33/5659 , G01R33/246 , G01R33/3607 , G01R33/5612
摘要： In order to configure a transmission coil of a magnetic resonance imaging (MRI) system without taking a specific measurement object into account, the transmission coil is automatically detected and identified when the transmission coil is connected to the MRI system. A phase setting of a pulse to be transmitted by the detected transmission coil is identified based on at least the identified type of the transmission coil. The transmission coil is excited with the pulse having the identified phase and amplitude.
摘要翻译： 为了构成磁共振成像（MRI）系统的传输线圈而不考虑特定的测量对象，当传输线圈连接到MRI系统时，传输线圈被自动检测和识别。 至少基于所识别的发送线圈类型来识别由所检测的发送线圈发送的脉冲的相位设定。 传输线圈被激发具有所识别的相位和幅度的脉冲。
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3.发明授权公开(公告)号：US08891846B2
公开(公告)日：2014-11-18
申请号：US13077908
申请日：2011-03-31
申请人： Hans-Peter Fautz
发明人： Hans-Peter Fautz
IPC分类号： G06K9/00 , G01R33/565 , G01R33/561
CPC分类号： G01R33/5612 , G01R33/5659
摘要： The present embodiments relate to a device and a method for data postprocessing of K-space data acquired using a magnetic resonance tomography device. Each part of a K-space matrix is generated with one recording using a magnetic resonance tomography device in a plurality of recordings with the aid of a plurality of transmitting transmit channels of the magnetic resonance tomography device using excitation signals of one amplitude and phase. A field generated in total by the plurality of transmitting transmit channels is determined through addition of the spatial distribution of field distribution datasets representing a field generated by at least one transmit channel of the plurality of channels. A spatially dependent phase correction of the data is performed for data acquired in one recording using phases resulting from the added field distribution datasets.
摘要翻译： 本实施例涉及使用磁共振断层摄影装置获取的K空间数据的数据后处理的装置和方法。 借助于使用一个振幅和相位的激励信号的磁共振断层摄影装置的多个发射发射信道，在多个记录中使用磁共振断层摄影装置，利用一个记录来生成K-空间矩阵的每个部分。 通过添加表示由多个信道的至少一个发送信道生成的字段的场分布数据集的空间分布来确定由多个发送发送信道总共产生的字段。 对于在一个记录中获取的数据，对由数据添加的场分布数据集产生的相位进行数据的空间相关相位校正。
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4.发明申请Magnetic Resonance Apparatus with Group-by-Group Actuation of Transmission Antennas 审中-公开传输天线群组驱动的磁共振装置公开(公告)号：US20140306708A1
公开(公告)日：2014-10-16
申请号：US14250140
申请日：2014-04-10
IPC分类号： G01R33/36
CPC分类号： G01R33/36 , G01R33/288 , G01R33/34092
摘要： A magnetic resonance apparatus including transmission antennas that may be actuated in parallel by a control device of the magnetic resonance apparatus may be operated in a group mode. In the group mode, the transmission antennas are grouped into groups of transmission antennas. The actuation signals of transmission antennas within the respective group are in a respectively predefined relationship relative to one another. A respective group actuation signal for each of the groups of transmission antennas is prescribed for the control device by an operator. The control device carries out checks as to whether a group exposure value established based on the group actuation signals lies below a maximum admissible group exposure limit. If this is the case, the control device establishes the actuation signals for the individual transmission antennas based on the group actuation signals. If this is not the case, the control device carries out another measure.
摘要翻译： 包括可由磁共振装置的控制装置并行致动的发送天线的磁共振装置可以以组模式操作。 在组模式中，发送天线被分组成发送天线组。 相应组内的发射天线的致动信号相对于彼此分别是预定义的关系。 用于操作者的控制装置规定了用于发送天线组中的每一组的相应组致动信号。 控制装置执行基于组致动信号建立的组曝光值是否在最大允许组暴露极限以下的检查。 如果是这种情况，则控制装置基于组致动信号建立各个发送天线的致动信号。 如果不是这样，则控制装置执行另一个测量。
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公开(公告)号：US20140077802A1
公开(公告)日：2014-03-20
申请号：US14026291
申请日：2013-09-13
IPC分类号： G01R33/48
CPC分类号： G01R33/4828 , G01R33/4833
摘要： A method and control device operate a magnetic resonance system in order to execute a first pulse sequence that includes an excitation phase and an acquisition phase. In the excitation phase, a first gradient is applied in a gradient direction to generate a spatially dependent basic magnetic field. A selective radio-frequency excitation pulse is executed, wherein the selective radio-frequency excitation pulse excites a first material and does not excite a second material in a first partial region of an examination volume, and wherein the selective radio-frequency excitation pulse does not excite the first material and excites the second material in a second partial region of the examination volume. In the acquisition phase, non-selective refocusing pulses are executed in order to acquire raw data of the first and second partial region of the examination volume, which acquisition is spatially coded along the gradient direction.
摘要翻译： 方法和控制装置操作磁共振系统以便执行包括激励相位和采集阶段的第一脉冲序列。 在激励阶段，沿梯度方向施加第一梯度以产生空间依赖的基本磁场。 执行选择性射频激励脉冲，其中选择性射频激励脉冲激发第一材料并且不在检查体积的第一部分区域中激发第二材料，并且其中选择性射频激励脉冲不 激发第一材料并在检查体积的第二部分区域中激发第二材料。 在采集阶段，执行非选择性重聚焦脉冲，以获取检查卷的第一和第二部分区域的原始数据，该采集沿梯度方向进行空间编码。
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公开(公告)号：US20130257427A1
公开(公告)日：2013-10-03
申请号：US13854064
申请日：2013-03-30
申请人： Hans-Peter Fautz , Rene Gumbrecht
发明人： Hans-Peter Fautz , Rene Gumbrecht
IPC分类号： G01R33/54
CPC分类号： G01R33/543 , G01R33/5612
摘要： A method and a control sequence determination device are provided for determining a magnetic resonance control sequence that includes a multichannel pulse train with a number of individual RF pulse trains sent out in parallel by a magnetic resonance system over different independent radio-frequency transmit channels. The multichannel pulse train is calculated based on a predetermined target function with a predetermined target magnetization in an RF pulse optimization method. The RF pulse optimization method takes account of the magnetization in the form of a non-linear equation and of a local radio-frequency load and in a plurality of volume elements in the form of quadratic equation systems.
摘要翻译： 提供了一种方法和控制顺序确定装置，用于确定磁共振控制序列，该磁共振控制序列包括具有多个单独的RF脉冲序列的多通道脉冲串，所述多个脉冲序列通过磁共振系统在不同的独立的射频发射信道上并行发送。 基于在RF脉冲优化方法中具有预定目标磁化强度的预定目标函数来计算多通道脉冲串。 RF脉冲优化方法考虑了非线性方程式和局部射频负载形式的磁化，以及二次方程式形式的多个体积元素。
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7.发明申请公开(公告)号：US20130214782A1
公开(公告)日：2013-08-22
申请号：US13593329
申请日：2012-08-23
申请人： Hans-Peter Fautz
发明人： Hans-Peter Fautz
IPC分类号： G01R33/56
CPC分类号： G01R33/56 , G01R33/56308
摘要： A transmit coil system of a magnetic resonance system is exposed to high-frequency transmit pulses so that atomic nuclei of a predetermined type of atomic nucleus of an examination object introduced into an examination volume are excited by the high-frequency transmit pulses to emit magnetic resonance signals. A gradient magnetic system is exposed to gradient currents during the exposure of the examination volume to the high-frequency transmit pulses so that gradient magnetic fields are superimposed on a basic magnetic field generated by a basic magnet in the examination volume. The gradient currents and the high-frequency transmit pulses are matched to each other such that the atomic nuclei are exclusively those with a velocity lying within or outside a predetermined velocity range. The excitation is independent of variations in the Larmor frequency of the relevant type of atomic nucleus caused by inhomogeneities of the basic magnetic field and/or by chemical displacement.
摘要翻译： 磁共振系统的发射线圈系统暴露于高频发射脉冲，使得引入检查体的检查对象的预定类型的原子核的原子核被高频发射脉冲激发以发射磁共振 信号。 在将检查体积暴露于高频发射脉冲期间，梯度磁场暴露于梯度电流，使得梯度磁场叠加在检查体积中由基本磁体产生的基本磁场上。 梯度电流和高频发射脉冲彼此匹配，使得原子核仅是速度在预定速度范围内或之外的那些。 该激发与由基本磁场的不均匀性和/或化学位移引起的相关类型的原子核的拉莫尔频率的变化无关。
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8.发明申请METHOD AND PROCESSOR AND MAGNETIC RESONANCE APPARATUS FOR DESIGNING RF PULSES TO MITIGATE OFF-RESONANCE EFFECTS 有权用于设计RF脉冲以减轻非共振效应的方法和处理器和磁共振装置公开(公告)号：US20130015854A1
公开(公告)日：2013-01-17
申请号：US13181868
申请日：2011-07-13
IPC分类号： G01R33/44
CPC分类号： G01R33/56563 , G01R33/446 , G01R33/5607 , G01R33/5612 , G01R33/5614
摘要： In a magnetic resonance apparatus and operating method therefor, and in a processor that is programmed to design RF pulses for operating such a magnetic resonance apparatus, the RF pulses are designed to mitigate off-resonance effects caused by inhomogeneity of the basic (B0) magnetic field in the magnetic resonance apparatus. The RF pulses of a parallel transmit array are designed with different spatial phase distributions, that deviate from a constant phase from pulse-to-pulse, with the absolute value of the difference between respective spatial phase distributions of any two successively radiated RF pulses corresponding to the off-resonance that is caused by B0-inhomogeneity during the time between the radiation of the successive pulses. Additionally, or separately, currents supplied to the shim coils can be taken into account in the design of the RF pulses as an additional degree of freedom, with the shimming of the basic magnetic field produced by the shim currents deviating from shim currents designed to ideally produce a homogenous B0 field.
摘要翻译： 在一种磁共振装置及其操作方法中，并且在被编程为设计用于操作这种磁共振装置的RF脉冲的处理器中，RF脉冲被设计成减轻由基本（B0）磁性的不均匀性引起的非共振效应 磁场。 平行发射阵列的RF脉冲被设计为具有不同的空间相位分布，其偏离了脉冲到脉冲的恒定相位，对应于任何两个相继辐射的RF脉冲的相应空间相位分布之间的差的绝对值 在连续脉冲的辐射期间由B0不均匀性引起的非共振。 此外，或者单独地，作为附加自由度，在RF脉冲的设计中可以考虑提供给垫片线圈的电流，同时由偏置电流产生的基本磁场的匀场偏离设计成理想的电流 产生均匀的B0场。
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9.发明授权Three-dimensional slice-selective multi-slice excitation method in MRT imaging 有权MRT成像中的三维切片选择多切片激发方法公开(公告)号：US07528601B2
公开(公告)日：2009-05-05
申请号：US12022274
申请日：2008-01-30
CPC分类号： G01R33/56545 , G01R33/4835 , G01R33/5659
摘要： In a method and apparatus for MRT imaging, data sets acquired from magnetic resonance signals of at least two limited spatial regions of a subject to be examined, (the spatial regions being displaced relative to one another along one spatial direction and overlapping in the respective edge region. Phase coding occurs in an inhomogeneous non-edge region, likewise in this spatial direction. For at least one of these spatial regions, a modulation function is determined that is limited to this entire spatial region and modulates the subject information. Foldovers in the overlap regions of the different spatial regions are calculated on the basis of the modulation function and the MRT images of the non-edge regions of the respective spatial regions are combined without foldovers in the spatial direction under consideration of the calculated foldings.
摘要翻译： 在用于MRT成像的方法和装置中，从要检查的对象的至少两个有限空间区域的磁共振信号获取的数据集（空间区域沿着一个空间方向相对于彼此移位并且在相应边缘中重叠） 相位编码发生在不均匀的非边缘区域，同样在该空间方向上，对于这些空间区域中的至少一个，确定了限制于该整个空间区域并调制主题信息的调制函数。 基于调制函数计算不同空间区域的重叠区域，并且在考虑计算的折叠的情况下将各空间区域的非边缘区域的MRT图像在空间方向上组合而不进行叠合。
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公开(公告)号：US10416258B2
公开(公告)日：2019-09-17
申请号：US13856231
申请日：2013-04-03
申请人： Hans Peter Fautz , Rene Gumbrecht
发明人： Hans Peter Fautz , Rene Gumbrecht
IPC分类号： G01R33/54 , G01R33/483 , G01R33/565 , G01R33/3415
摘要： A method for controlling a magnetic resonance system outputs a pulse sequence including a first slice-selective excitation pulse that excites a first slice with a first magnetization. The pulse sequence includes a second slice-selective excitation pulse that excites a second slice with the first magnetization and a third slice-selective excitation pulse that excites the first slice with a second magnetization that cancels the first magnetization. The pulse sequence also includes and a fourth slice-selective excitation pulse that excites the second slice with a magnetization that cancels the first magnetization. The first slice and the second slice intersect.
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