公开(公告)号：US20130249550A1

公开(公告)日：2013-09-26

申请号：US13848965

申请日：2013-03-22

申请人： Thorsten Feiweier ,  Christof Krellmann ,  Bernd Kuehn ,  Dominik Paul ,  Josef Pfeuffer ,  Elisabeth Preusche ,  Katrin Wohlfarth

发明人： Thorsten Feiweier ,  Christof Krellmann ,  Bernd Kuehn ,  Dominik Paul ,  Josef Pfeuffer ,  Elisabeth Preusche ,  Katrin Wohlfarth

IPC分类号： G01R33/563

CPC分类号： G01R33/563 ,  G01R33/4833 ,  G01R33/4838 ,  G01R33/56527

摘要： In a method and a magnetic resonance (MR) system, a marked area is determined that demarcates a predetermined volume segment of the subject relative to the regions adjacent thereto. Nuclei in the predetermined volume segment are excited, or nuclei in a region adjacent thereto are saturated with an RF excitation pulse at the same time a magnetic field gradient is activated. The center frequency of a frequency range of the RF excitation pulse and the direction of the magnetic field gradient are adjusted dependent on resonant frequencies of substances present within the predetermined volume segment in order, starting from the predetermined volume segment to shift an actual excitation volume segment excited by the RF excitation pulse toward the marked area, or to shift a saturation volume saturated by the RF excitation pulse away from the marked area. MR data are then acquired from the predetermined volume segment.

摘要翻译： 在方法和磁共振（MR）系统中，确定标记的区域，其相对于与其相邻的区域划定对象的预定体积段。 在预定体积段中的核被激发，或者与其相邻的区域中的核被RF激励脉冲饱和，同时磁场梯度被激活。 RF激励脉冲的频率范围和磁场梯度的方向的中心频率根据预定体积段中存在的物质的谐振频率依次调整，从预定的音量段开始，以使实际的励磁音量段 通过RF激发脉冲激发到标记区域，或者使由RF激发脉冲饱和的饱和体积偏离标记区域。 然后从预定的音量段获取MR数据。

公开(公告)号：US20130088228A1

公开(公告)日：2013-04-11

申请号：US13649326

申请日：2012-10-11

申请人： Thorsten Feiweier ,  Bernd Kuehn

发明人： Thorsten Feiweier ,  Bernd Kuehn

IPC分类号： G01R33/56 ,  G01R33/38

CPC分类号： G01R33/4838 ,  G01R33/5607

摘要： In a method and apparatus for magnetic resonance (MR) imaging, a magnetization of nuclear spins in a subject is prepared in multiple preparation modules of an acquisition sequence. MR signals are acquired with at least one imaging module of the sequence. Spoiler gradient fields are generated in the multiple preparation modules in order to affect a transverse magnetization of the spins. The spoiler gradient fields that are applied in at least two different preparation modules are spatially varied along different directions. Spoiler gradient moments of the spoiler gradient fields are selected so that, for at least one of three orthogonal spatial directions, a weighted sum of the spoiler gradient moments that are applied along this spatial direction satisfies a threshold condition.

摘要翻译： 在用于磁共振（MR）成像的方法和装置中，在采集序列的多个准备模块中制备受试者的核自旋的磁化。 使用该序列的至少一个成像模块来获取MR信号。 扰流器梯度场在多个准备模块中产生，以影响自旋的横向磁化。 应用于至少两个不同准备模块的扰流板梯度场在不同方向上空间变化。 选择扰流板梯度场的扰流器梯度矩，使得对于三个正交空间方向中的至少一个，沿着该空间方向施加的扰流器梯度力矩的加权和满足阈值条件。

公开(公告)号：US09651644B2

公开(公告)日：2017-05-16

申请号：US13848965

申请日：2013-03-22

申请人： Thorsten Feiweier ,  Christof Krellmann ,  Bernd Kuehn ,  Dominik Paul ,  Josef Pfeuffer ,  Elisabeth Preusche ,  Katrin Wohlfarth

发明人： Thorsten Feiweier ,  Christof Krellmann ,  Bernd Kuehn ,  Dominik Paul ,  Josef Pfeuffer ,  Elisabeth Preusche ,  Katrin Wohlfarth

IPC分类号： G01V3/00 ,  G01R33/563 ,  G01R33/565 ,  G01R33/483

CPC分类号： G01R33/563 ,  G01R33/4833 ,  G01R33/4838 ,  G01R33/56527

摘要： In a method and a magnetic resonance (MR) system, a marked area is determined that demarcates a predetermined volume segment of the subject relative to the regions adjacent thereto. Nuclei in the predetermined volume segment are excited, or nuclei in a region adjacent thereto are saturated with an RF excitation pulse at the same time a magnetic field gradient is activated. The center frequency of a frequency range of the RF excitation pulse and the direction of the magnetic field gradient are adjusted dependent on resonant frequencies of substances present within the predetermined volume segment in order, starting from the predetermined volume segment to shift an actual excitation volume segment excited by the RF excitation pulse toward the marked area, or to shift a saturation volume saturated by the RF excitation pulse away from the marked area. MR data are then acquired from the predetermined volume segment.

公开(公告)号：US09453896B2

公开(公告)日：2016-09-27

申请号：US13649326

申请日：2012-10-11

申请人： Thorsten Feiweier ,  Bernd Kuehn

发明人： Thorsten Feiweier ,  Bernd Kuehn

IPC分类号： G01R33/56 ,  G01R33/38 ,  G01R33/483

CPC分类号： G01R33/4838 ,  G01R33/5607

摘要： In a method and apparatus for magnetic resonance (MR) imaging, a magnetization of nuclear spins in a subject is prepared in multiple preparation modules of an acquisition sequence. MR signals are acquired with at least one imaging module of the sequence. Spoiler gradient fields are generated in the multiple preparation modules in order to affect a transverse magnetization of the spins. The spoiler gradient fields that are applied in at least two different preparation modules are spatially varied along different directions. Spoiler gradient moments of the spoiler gradient fields are selected so that, for at least one of three orthogonal spatial directions, a weighted sum of the spoiler gradient moments that are applied along this spatial direction satisfies a threshold condition.

摘要翻译： 在用于磁共振（MR）成像的方法和装置中，在采集序列的多个准备模块中制备受试者的核自旋的磁化。 使用该序列的至少一个成像模块来获取MR信号。 扰流器梯度场在多个准备模块中产生，以影响自旋的横向磁化。 应用于至少两个不同准备模块的扰流板梯度场在不同方向上空间变化。 选择扰流板梯度场的扰流器梯度矩，使得对于三个正交空间方向中的至少一个，沿着该空间方向施加的扰流器梯度力矩的加权和满足阈值条件。

公开(公告)号：US20110043204A1

公开(公告)日：2011-02-24

申请号：US12859461

申请日：2010-08-19

申请人： Wolfgang Bielmeier ,  Gerhard Brinker ,  Swen Campagna ,  Thorsten Feiweier ,  Bernd Kuehn ,  Mathias Nittka ,  Carsten Prinz ,  Thorsten Speckner

发明人： Wolfgang Bielmeier ,  Gerhard Brinker ,  Swen Campagna ,  Thorsten Feiweier ,  Bernd Kuehn ,  Mathias Nittka ,  Carsten Prinz ,  Thorsten Speckner

IPC分类号： G01R33/44

CPC分类号： G01R33/546 ,  G01R33/543

摘要： In a magnetic resonance system according to a measurement protocol defined in advance and comprising multiple acquisition parameters, wherein given a non-compliance with at least one limit value (which is automatically established before the beginning of a subject-specific measurement data acquisition)—in particular a SAR limit value and/or a magneto-stimulation limit value and/or a hardware limit value—by the measurement protocol, an adaptation of at least one acquisition parameter ensues using at least one (in particular user-defined) protocol-specific rule for compliance with the limit value, and the measurement data acquisition ensues automatically according to the adapted acquisition parameters.

摘要翻译： 在根据预先定义并包括多个采集参数的测量协议的磁共振系统中，其中给定不符合至少一个限制值（其在对象特异性测量数据获取开始之前自动建立） - 在 特别是SAR限制值和/或磁刺激极限值和/或硬件限制值 - 通过测量协议，使用至少一个（特别是用户定义的）协议特定的随机序列来调整至少一个采集参数 根据适应的采集参数自动进行测量数据采集。

公开(公告)号：US20130249551A1

公开(公告)日：2013-09-26

申请号：US13848985

申请日：2013-03-22

申请人： Bernd Kuehn

发明人： Bernd Kuehn

IPC分类号： G01R33/44

CPC分类号： G01R33/44 ,  G01R33/288 ,  G01R33/543 ,  G01R33/546

摘要： In a method to determine a complete parameter of a pulse sequence composed of multiple pulse sequence modules for operating a magnetic resonance examination apparatus parameter information of the pulse sequence modules is stored in a memory in leaves and nodes of a tree structure, and the parameter information stored in the tree structure is evaluated to determine the complete parameter of the pulse sequence.

摘要翻译： 在确定由用于操作磁共振检查装置的多个脉冲序列模块组成的脉冲序列的完整参数的方法中，脉冲序列模块的参数信息被存储在树结构的叶和节点中的存储器中，参数信息 评估存储在树结构中以确定脉冲序列的完整参数。

公开(公告)号：US20110137598A1

公开(公告)日：2011-06-09

申请号：US12964093

申请日：2010-12-09

申请人： Bernd Kuehn

发明人： Bernd Kuehn

IPC分类号： G06F19/00

CPC分类号： G01R33/543

摘要： In a method to configure at least one partial range of a pulse sequence for operating a magnetic resonance device, the pulse sequence is composed of at least two different program units, and information and/or at least one parameter is exchanged between the individual program units by a computerized mediator unit.

摘要翻译： 在用于配置用于操作磁共振装置的脉冲序列的至少一个部分范围的方法中，脉冲序列由至少两个不同的程序单元组成，并且在各个程序单元之间交换信息和/或至少一个参数 通过计算机化的调解器单元。

公开(公告)号：US08762090B2

公开(公告)日：2014-06-24

申请号：US12964093

申请日：2010-12-09

申请人： Bernd Kuehn

发明人： Bernd Kuehn

IPC分类号： G01D18/00 ,  G01V3/00

CPC分类号： G01R33/543

摘要： In a method to configure at least one partial range of a pulse sequence for operating a magnetic resonance device, the pulse sequence is composed of at least two different program units, and information and/or at least one parameter is exchanged between the individual program units by a computerized mediator unit.

摘要翻译： 在用于配置用于操作磁共振装置的脉冲序列的至少一个部分范围的方法中，脉冲序列由至少两个不同的程序单元组成，并且在各个程序单元之间交换信息和/或至少一个参数 通过计算机化的调解器单元。

公开(公告)号：US07622923B2

公开(公告)日：2009-11-24

申请号：US12188344

申请日：2008-08-08

申请人： Christian Geppert ,  Bernd Kuehn

发明人： Christian Geppert ,  Bernd Kuehn

IPC分类号： G01V3/00

CPC分类号： G01R33/4822 ,  G01R33/4818 ,  G01R33/4828 ,  G01R33/5601 ,  G01R33/5607

摘要： In a magnetic resonance method and apparatus for acquisition of measurement data from a subject, k-space to be scanned into an inner region and an outer region, and the inner region is divided into inner segments that differ in terms of their distance from a k-space center and the outer region is divided into outer segments that differ in terms of their distance from a k-space center. First k-space data are acquired for the inner region, wherein k-space lines of the inner region are divided into first groups such that k-space lines from different inner segments are associated in each of the first groups, and the first groups are successively scanned. Second k-space data are acquired for the outer region, wherein k-space lines of the outer region are divided into second groups such that k-space lines from different outer segments are associated in each of the second groups, and the second groups are successively scanned.

摘要翻译： 在用于从被摄体获取测量数据的磁共振方法和装置中，要扫描到内部区域和外部区域的k空间，并且内部区域被划分为与其距离k的距离不同的内部区段 - 空间中心和外部区域被划分成与k空间中心的距离不同的外部段。 对于内部区域获取第一k空间数据，其中内部区域的k空间线被划分为第一组，使得来自不同内部段的k空间线在每个第一组中相关联，并且第一组是 连续扫描。 对于外部区域获取第二k空间数据，其中外部区域的k空间线被划分成第二组，使得来自不同外部段的k空间线在每个第二组中相关联，并且第二组是 连续扫描。

公开(公告)号：US20080150531A1

公开(公告)日：2008-06-26

申请号：US11962792

申请日：2007-12-21

申请人： Timothy Hughes ,  Bernd Kuehn

发明人： Timothy Hughes ,  Bernd Kuehn

IPC分类号： G01R33/56

CPC分类号： G01R33/561 ,  G01R33/4824 ,  G01R33/4828 ,  G01R33/5602 ,  G01R33/5607

摘要： In a method for image generation by magnetic resonance with suppression of a spectral component of the magnetic resonance signal during the signal acquisition, k-space is sampled in sub-sections, an excitation pulse for excitation of the spectral component to be suppressed is radiated at a point in time TI before acquisition of each sub-section of k-space, and different TI values are selected for the respective sub-sections.

摘要翻译： 在信号采集期间通过抑制磁共振信号的频谱分量的磁共振成像的方法中，在子部分中对k空间进行采样，将要抑制的频谱分量的激励用激励脉冲放射在 在获取k空间的每个子部分之前的时间点TI，并且为各个子部分选择不同的TI值。