公开(公告)号：US08354843B2

公开(公告)日：2013-01-15

申请号：US12559753

申请日：2009-09-15

申请人： Stefan Huwer ,  Josef Pfeuffer

发明人： Stefan Huwer ,  Josef Pfeuffer

IPC分类号： G01V3/00

CPC分类号： G01R33/561 ,  G01R33/4833 ,  G01R33/485 ,  G01R33/5611

摘要： In a method and system to generate magnetic resonance (MR) images by MR data are acquired by a pure phase-coded imaging in k-space having a predetermined set of possible measurement points, with the MR data being acquired only for a predetermined subset of the measurement points of this set. An image is reconstructed from the acquired measurement points of the subset such that information about un-acquired measurement points of the set is also obtained.

摘要翻译： 在通过MR数据产生磁共振（MR）图像的方法和系统中，通过具有预定的可能测量点组的k空间中的纯相位编码成像来获取MR数据，其中MR数据仅被获取 该组的测量点。 从所述子集的所获取的测量点重建图像，使得还获得关于所述集合的未获取的测量点的信息。

公开(公告)号：US20100066364A1

公开(公告)日：2010-03-18

申请号：US12559753

申请日：2009-09-15

申请人： Stefan Huwer ,  Josef Pfeuffer

发明人： Stefan Huwer ,  Josef Pfeuffer

IPC分类号： G01R33/48

CPC分类号： G01R33/561 ,  G01R33/4833 ,  G01R33/485 ,  G01R33/5611

摘要： In a method and system to generate magnetic resonance (MR) images by MR data are acquired by a pure phase-coded imaging in k-space having a predetermined set of possible measurement points, with the MR data being acquired only for a predetermined subset of the measurement points of this set. An image is reconstructed from the acquired measurement points of the subset such that information about un-acquired measurement points of the set is also obtained.

摘要翻译： 在通过MR数据产生磁共振（MR）图像的方法和系统中，通过具有预定的可能测量点组的k空间中的纯相位编码成像来获取MR数据，其中MR数据仅被获取 该组的测量点。 从所述子集的所获取的测量点重建图像，使得还获得关于所述集合的未获取的测量点的信息。

公开(公告)号：US09753108B2

公开(公告)日：2017-09-05

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： G01V3/00 ,  G01R33/44 ,  G01R33/34 ,  G01R33/385 ,  G01R33/387 ,  G01R33/56 ,  G01R33/561 ,  G01R33/565

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.

公开(公告)号：US09329254B2

公开(公告)日：2016-05-03

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 ,  G01R33/565 ,  G01R33/561 ,  G01R33/567

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：US20130253876A1

公开(公告)日：2013-09-26

申请号：US13847373

申请日：2013-03-19

申请人： Josef Pfeuffer ,  Rainer Schneider

发明人： Josef Pfeuffer ,  Rainer Schneider

IPC分类号： G01R33/44 ,  G01R33/38

CPC分类号： G01R33/443 ,  G01R33/38 ,  G01R33/4833 ,  G01R33/4836 ,  G01R33/5612 ,  G01R33/56563

摘要： A method and a control sequence determination device for the determination of a magnetic resonance system activation sequence including at least one high-frequency pulse sequence to be transmitted by a magnetic resonance system are provided. A current B0 map and optionally a target magnetization are acquired. In addition, a k-space trajectory type is determined. An error density is calculated in a k-space based on the current B0 map and optionally based on the target magnetization using an analytic function. This analytic function defines an error density in the k-space as a function of the current B0 map and optionally the target magnetization. Taking account of the error density in the k-space, a k-space trajectory of the specified k-space trajectory type is determined. The high-frequency pulse sequence is determined for the k-space trajectory in an HF pulse optimization process.

摘要翻译： 提供一种用于确定包括要由磁共振系统传送的至少一个高频脉冲序列的磁共振系统激活序列的方法和控制序列确定装置。 获取当前的B0图和可选的目标磁化。 另外，确定k空间轨迹类型。 基于当前B0图在k空间中计算误差密度，并且可选地基于使用分析函数的目标磁化。 该分析函数定义了k空间中的误差密度，作为当前B0映射和可选的目标磁化的函数。 考虑到k空间中的误差密度，确定了指定的k空间轨迹类型的k空间轨迹。 在HF脉冲优化过程中为k空间轨迹确定高频脉冲序列。

公开(公告)号：US08436610B2

公开(公告)日：2013-05-07

申请号：US12604273

申请日：2009-10-22

申请人： Josef Pfeuffer

发明人： Josef Pfeuffer

IPC分类号： G01R33/56366 ,  G01R33/563 ,  G01R33/5601 ,  G01R33/5635 ,  A61B5/055

CPC分类号： G01R33/56366 ,  G01R33/4833 ,  G01R33/4835 ,  G01R33/5601

摘要： A system adaptively processes MR image data to accommodate variation in perfusion time of a vessel fluid. An MR image data acquisition device initiates acquisition of a first image set comprising multiple different individual images having a set of corresponding different physical slice locations through a patient anatomical volume and being acquired at a corresponding first set of times and in a first order relative to a time of blood tagging of a patient. The MR image data acquisition device initiates acquisition of a second image set comprising multiple different individual images having the set of corresponding different physical slice locations through the patient anatomical volume and being acquired at substantially the corresponding first set of times and in a second order, different to the first order, relative to the time of blood tagging of the patient. At least one computer combines and averages image data representing the same corresponding image slice in both the first and second image sets and acquired at different times relative to the time of blood tagging of the patient and sends the combined and averaged image data representing the same corresponding image slice to a destination.

摘要翻译： 系统自适应地处理MR图像数据以适应血管流体的灌注时间的变化。 MR图像数据获取装置通过患者解剖体积开始获取包括具有一组对应的不同物理切片位置的多个不同单独图像的第一图像集，并且以对应的第一组和第一组相对于 血液标签的时间。 MR图像数据获取装置启动通过患者解剖体积开始包括具有对应不同物理切片位置的集合的多个不同单独图像的第二图像集，并且基本上在相应的第一组和第二阶段获取不同的 相对于患者的血液标记时间的第一顺序。 至少一台计算机在第一和第二图像集合中组合并平均表示相同对应图像切片的图像数据，并且相对于患者的血液标记时间在不同时间获取，并发送表示相同对应的组合和平均的图像数据 图像切片到目的地。

公开(公告)号：US08195417B2

公开(公告)日：2012-06-05

申请号：US12219610

申请日：2008-07-24

申请人： Thorsten Feiweier ,  Ralf Ladebeck ,  Diana Martin ,  Hartwig Newiger ,  Josef Pfeuffer ,  Michael Szimtenings ,  Harald Werthner

发明人： Thorsten Feiweier ,  Ralf Ladebeck ,  Diana Martin ,  Hartwig Newiger ,  Josef Pfeuffer ,  Michael Szimtenings ,  Harald Werthner

IPC分类号： G01R35/00

CPC分类号： A61B6/032 ,  A61B5/11 ,  A61B5/7285 ,  A61B6/037 ,  A61B6/5247 ,  A61B6/541 ,  A61B8/00 ,  A61B8/4416 ,  A61B90/36 ,  A61B2090/364 ,  G06F19/00

摘要： Disclosed is a method and apparatus for recording measured data from a patient by taking movements into account by use of a medical device designed both for recording motion-related measured data and for recording nuclear medicine measured data. The method may include recording nuclear medicine measured data by use of the medical device, simultaneously recording motion-related measured data by use of the medical device, determining at least one motion information item relating to at least one movement of the patient and/or at least one movement inside the body of the patient during the ongoing measured data recording by evaluating at least a portion of the previously recorded motion-related measured data, and carrying out motion correction for at least a portion of the nuclear medicine measured data by use of the computational device in parallel with recording the measured data.

摘要翻译： 公开了一种通过使用设计用于记录运动相关测量数据和记录核医学测量数据的医疗装置来考虑运动来记录来自患者的测量数据的方法和装置。 该方法可以包括通过使用医疗装置记录核医学测量数据，同时通过使用医疗装置记录与运动有关的测量数据，确定与患者的至少一个运动有关的至少一个运动信息项和/或在 通过评估先前记录的运动相关测量数据的至少一部分，以及通过使用以下方式对至少一部分核医学测量数据执行运动校正，在进行中的测量数据记录期间在患者体内进行至少一次运动 计算设备并行记录测量数据。

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。