公开(公告)号：US08086003B2

公开(公告)日：2011-12-27

申请号：US12179694

申请日：2008-07-25

申请人： Josef Pfeuffer

发明人： Josef Pfeuffer

IPC分类号： G06K9/00 ,  G01V3/00

CPC分类号： G01R33/561 ,  G01R33/4806 ,  G01R33/4824 ,  G01R33/56308 ,  G01R33/56509

摘要： In a method and magnetic resonance apparatus for acquisition and processing of a series of temporally successive image data sets of the series of temporally successive image data sets is acquired by magnetic resonance technology, wherein k-space image data corresponding to each image data set are acquired, and for each image data set in the series, a determination is made, in at least one first part of that image data set, of a measure that characterizes a global image intensity value of that image data set. At least one second part of the image data sets is corrected using the determined measures and/or the determined measures are used in an evaluation of at least one third part of the image data sets. A temporal change of the global image intensity value in the series of temporally successive image data sets is compensated or taken into account in this manner.

摘要翻译： 在用于获取和处理一系列时间上连续的图像数据集的一系列时间连续的图像数据集的方法和磁共振装置中，通过磁共振技术获得，其中获取对应于每个图像数据集的k空间图像数据 并且对于该系列中的每个图像数据集，在该图像数据集的至少一个第一部分中确定表征该图像数据集的全局图像强度值的度量的度量。 使用所确定的测量来校正图像数据集的至少一个第二部分，和/或所确定的测量用于至少第三部分图像数据集的评估。 以这种方式补偿或考虑了一系列时间连续的图像数据集中的全局图像强度值的时间变化。

公开(公告)号：US07816916B2

公开(公告)日：2010-10-19

申请号：US12210614

申请日：2008-09-15

申请人： Fabrizio Fasano ,  Robin Heidemann ,  Josef Pfeuffer

发明人： Fabrizio Fasano ,  Robin Heidemann ,  Josef Pfeuffer

IPC分类号： G01V3/00

CPC分类号： G01R33/5611 ,  G01R33/5615

摘要： In a magnetic resonance imaging method and apparatus, magnetic resonance data are acquired (an examination subject) using a zoomed method, and reconstruction of the image of the examination subject is undertaken using a parallel imaging reconstruction method.

摘要翻译： 在磁共振成像方法和装置中，使用变焦方法获取磁共振数据（检查对象），并且使用并行成像重建方法进行检查对象的图像的重建。

公开(公告)号：US09041396B2

公开(公告)日：2015-05-26

申请号：US13355937

申请日：2012-01-23

申请人： Josef Pfeuffer ,  Lawrence Wald

发明人： Josef Pfeuffer ,  Lawrence Wald

IPC分类号： G01V3/00 ,  G01R33/24 ,  G01R33/46 ,  G01R33/565 ,  G01R33/483 ,  G01R33/561

CPC分类号： G01R33/243 ,  G01R33/4616 ,  G01R33/4835 ,  G01R33/5616 ,  G01R33/56563

摘要： In a method for calculating a B0 field map (a map of the basic magnetic field) in a magnetic resonance apparatus, a navigator pulse is emitted and navigator response resulting from the navigator pulse are detected in at least some channels of a multichannel RF coil array. Each channel of the multichannel RF coil array includes an RF coil and spatial information regarding the respective positions of the individual RF coils is made available to a processor, together with the multiple navigator signals. Using the spatial information obtained from the position of the RF coils that respectively detected the navigator response signals, a B0 field map is generated, without the need for spatial encoding the respective navigator response signals.

摘要翻译： 在用于计算磁共振装置中的B0场映射（基本磁场的映射）的方法中，发射导航脉冲，并且在多通道RF线圈阵列的至少一些通道中检测由导航脉冲导致的导航器响应 。 多通道RF线圈阵列的每个通道包括RF线圈，并且关于各个RF线圈的相应位置的空间信息与多个导航器信号一起可用于处理器。 使用从分别检测到导航器响应信号的RF线圈的位置获得的空间信息，生成B0场映射，而不需要对各个导航器响应信号进行空间编码。

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：US20120249138A1

公开(公告)日：2012-10-04

申请号：US13422271

申请日：2012-03-16

申请人： Josef Pfeuffer

发明人： Josef Pfeuffer

IPC分类号： G01R33/48

CPC分类号： G01R33/56563 ,  G01R33/5616 ,  G01R33/56509 ,  G01R33/5676

摘要： In a magnetic resonance (MR) method and system for correction of phase information in MR images of a predetermined volume segment of an examination subject, a basic magnetic field is applied and MR data of the predetermined volume segment are acquired and evaluated such that phase information is calculated for each image element of the predetermined volume segment. A navigator signal is acquired that detects an unintentional change of the basic magnetic field that is caused by movements of the examination subject or by the magnetic resonance system itself. The phase information is corrected with this navigator signal.

摘要翻译： 在用于校正检查对象的预定体积段的MR图像中的相位信息的磁共振（MR）方法和系统中，施加基本磁场并获取和评估预定体积段的MR数据，使得相位信息 对于预定体积段的每个图像元素计算。 获取导航信号，其检测由检查对象的运动或磁共振系统本身引起的基本磁场的无意的变化。 相位信息用该导航信号进行校正。

公开(公告)号：US08203340B2

公开(公告)日：2012-06-19

申请号：US12189241

申请日：2008-08-11

申请人： Josef Pfeuffer

发明人： Josef Pfeuffer

IPC分类号： G01V3/00

CPC分类号： G01R33/56366 ,  A61B5/055 ,  G01R33/4833 ,  G01R33/56333 ,  G01R33/5635 ,  G01R33/56509 ,  G06T5/50 ,  G06T7/0002 ,  G06T7/13 ,  G06T2207/10088 ,  G06T2207/30168

摘要： In a magnetic resonance method and apparatus for generating perfusion images, a perfusion series of magnetic resonance perfusion images is acquired that includes tag images and at least one control image, that are grouped in pairs. From each pair an initially processed perfusion image is obtained, such as by subtraction. Each initially processed image is subjected to a quality control review by analysis with respect to at least one image quality criterion. Any initially processed image that does not satisfy the quality criterion is rejected. Only initially processed images that satisfy the quality criterion are combined to form a resultant magnetic resonance perfusion image. Artifacts in the resultant perfusion image are thereby reduced or avoided.

摘要翻译： 在用于产生灌注图像的磁共振方法和装置中，获取灌注系列的磁共振灌注图像，其包括成对分组的标签图像和至少一个控制图像。 从每对中获得初始处理的灌注图像，例如通过减法获得。 通过关于至少一个图像质量标准的分析对每个初始处理的图像进行质量控制审查。 任何不符合质量标准的初始处理图像都被拒绝。 仅组合满足质量标准的最初处理的图像，以形成合成的磁共振灌注图像。 从而减少或避免了所得灌注图像中的人造物。

公开(公告)号：US09274195B2

公开(公告)日：2016-03-01

申请号：US13847680

申请日：2013-03-20

申请人： Josef Pfeuffer ,  Rainer Schneider

发明人： Josef Pfeuffer ,  Rainer Schneider

IPC分类号： G01V3/00 ,  G01R33/54 ,  G01R33/28 ,  G01R33/483 ,  G01R33/561

CPC分类号： G01R33/543 ,  G01R33/28 ,  G01R33/4833 ,  G01R33/4836 ,  G01R33/5612

摘要： In method and a control sequence determination device to determine a magnetic resonance system control sequence that includes at least one radio-frequency pulse train to be emitted by a magnetic resonance system, a target magnetization (m) is initially detected, and an energy distribution function in k-space is determined on the basis of the target magnetization. A k-space trajectory is then determined under consideration of the energy distribution function in k-space, for which the radio-frequency pulse train is then determined in an RF pulse optimization method. The method is suitable for operation of a magnetic resonance system, and a magnetic resonance system includes such a control sequence determination device.

摘要翻译： 在方法和控制序列确定装置中，确定包括由磁共振系统发射的至少一个射频脉冲串的磁共振系统控制序列，最初检测目标磁化（m），并且能量分布函数 基于目标磁化确定k空间。 然后考虑k空间中的能量分布函数来确定k空间轨迹，然后在RF脉冲优化方法中确定射频脉冲序列。 该方法适用于磁共振系统的操作，并且磁共振系统包括这样的控制顺序确定装置。

公开(公告)号：US20150285877A1

公开(公告)日：2015-10-08

申请号：US14678484

申请日：2015-04-03

申请人： Josef Pfeuffer ,  Rainer Schneider

发明人： Josef Pfeuffer ,  Rainer Schneider

IPC分类号： G01R33/44 ,  G01R33/385 ,  G01R33/561 ,  G01R33/565 ,  G01R33/56 ,  G01R33/34 ,  G01R33/387

CPC分类号： G01R33/443 ,  G01R33/34092 ,  G01R33/385 ,  G01R33/387 ,  G01R33/5608 ,  G01R33/5613 ,  G01R33/5616 ,  G01R33/56536 ,  G01R33/56563 ,  G01R33/5659

摘要： A method for creating an image data set using a magnetic resonance system including at least two RF transmit coils includes, for each RF transmit coil, calculating a value for a susceptibility magnetic field gradient to be corrected from the Gs map in combination with the B1 map of the RF transmit coil. The method includes, for each RF transmit coil, calculating a time delay of the excitation pulse. The method also includes calculating a complex weighting factor for scaling the pulse profile for each RF transmit coil to achieve an as uniform as possible deflection of the magnetization by the excitation pulse over the area under examination, and passing through the imaging sequence. The RF transmit coils each emit an excitation pulse with the calculated time delay and with a pulse profile scaled according to the calculated complex weighting factors.

摘要翻译： 用于使用包括至少两个RF发射线圈的磁共振系统创建图像数据集的方法包括：对于每个RF发射线圈，从与G图相结合的B1映射计算要校正的磁敏度磁场梯度的值 的RF发射线圈。 对于每个RF发射线圈，该方法包括计算激励脉冲的时间延迟。 该方法还包括计算用于缩放每个RF发射线圈的脉冲分布的复合加权因子，以实现通过激励脉冲在被检测区域上的可能的磁化偏移的均匀并通过成像序列。 RF发射线圈各自发射具有计算的时间延迟的激励脉冲，并且根据计算的复加权因子对脉冲分布进行缩放。

公开(公告)号：US20130249549A1

公开(公告)日：2013-09-26

申请号：US13847680

申请日：2013-03-20

申请人： Josef Pfeuffer ,  Rainer Schneider

发明人： Josef Pfeuffer ,  Rainer Schneider

IPC分类号： G01R33/54 ,  G01R33/28

CPC分类号： G01R33/543 ,  G01R33/28 ,  G01R33/4833 ,  G01R33/4836 ,  G01R33/5612

摘要： In method and a control sequence determination device to determine a magnetic resonance system control sequence that includes at least one radio-frequency pulse train to be emitted by a magnetic resonance system, a target magnetization (m) is initially detected, and an energy distribution function in k-space is determined on the basis of the target magnetization. A k-space trajectory is then determined under consideration of the energy distribution function in k-space, for which the radio-frequency pulse train is then determined in an RF pulse optimization method. The method is suitable for operation of a magnetic resonance system, and a magnetic resonance system includes such a control sequence determination device.

摘要翻译： 在方法和控制序列确定装置中，确定包括由磁共振系统发射的至少一个射频脉冲串的磁共振系统控制序列，最初检测目标磁化（m），并且能量分布函数 基于目标磁化确定k空间。 然后考虑k空间中的能量分布函数来确定k空间轨迹，然后在RF脉冲优化方法中确定射频脉冲序列。 该方法适用于磁共振系统的操作，并且磁共振系统包括这样的控制顺序确定装置。

公开(公告)号：US08233961B2

公开(公告)日：2012-07-31

申请号：US12143265

申请日：2008-06-20

申请人： Heiko Meyer ,  Josef Pfeuffer

发明人： Heiko Meyer ,  Josef Pfeuffer

IPC分类号： A61B5/055 ,  G01V3/00

CPC分类号： G01R33/56341 ,  A61B5/0263 ,  A61B5/055 ,  G01R33/4806 ,  G01R33/56366

摘要： In a method and a device for automatic determination of perfusion by using a magnetic resonance system, multiple first MR data sets are thereby acquired from a volume element over time with a perfusion-sensitive imaging sequence, and multiple second MR data sets of the same volume element are acquired over time with a control imaging sequence, in particular a perfusion-insensitive imaging sequence. These first MR data sets and the second MR data sets are subjected to a statistical time series analysis in order to determine the perfusion in the volume element.

摘要翻译： 在通过使用磁共振系统自动确定灌注的方法和装置中，随后随着灌注敏感成像序列随时间地从体积元素获得多个第一MR数据集，以及相同体积的多个第二MR数据集 随着时间的推移，通过控制成像序列，特别是灌注不敏感的成像序列获得元件。 对这些第一MR数据集和第二MR数据集进行统计时间序列分析，以确定体积元素中的灌注。