公开(公告)号：US09557248B2

公开(公告)日：2017-01-31

申请号：US14208375

申请日：2014-03-13

申请人： Thorsten Feiweier ,  Alto Stemmer

发明人： Thorsten Feiweier ,  Alto Stemmer

IPC分类号： G01M99/00 ,  G06F19/00 ,  G01R33/54 ,  G01R33/561 ,  A61B6/00 ,  A61B8/00

CPC分类号： G01M99/008 ,  A61B6/586 ,  A61B8/54 ,  G01R33/543 ,  G01R33/561 ,  G06F19/00 ,  G06F19/321 ,  G16H40/63

摘要： In a method for operating a medical imaging system and a medical imaging system operating according to such a method, a measurement sequence is divided into a number of partial sequences, with each of the partial sequences resulting in a loading of at least one of these system components when the measurement sequence is executed. The partial sequences are evaluated, in terms of their number and duration, using a computerized model in order to determine whether a load limit for the at least one of the system components is exceeded. If so, the number or duration of the partial sequences is modified, and a check using the computer model is again implemented. A number or respective duration of the partial sequences that results in the load limit not being exceeded is then used as a final output in order to operate the medical imaging system.

摘要翻译： 在用于操作根据这种方法操作的医学成像系统和医学成像系统的方法中，测量序列被分成多个部分序列，每个部分序列导致这些系统中的至少一个的加载 执行测量序列时的组件。 使用计算机化模型来评估部分序列的数量和持续时间，以便确定是否超过了至少一个系统组件的负载限制。 如果是这样，则部分序列的数量或持续时间被修改，并且再次实现使用计算机模型的检查。 然后将导致不超过负载限制的部分序列的数量或相应持续时间用作最终输出，以便操作医学成像系统。

公开(公告)号：US08638098B2

公开(公告)日：2014-01-28

申请号：US13231028

申请日：2011-09-13

申请人： Thorsten Feiweier

发明人： Thorsten Feiweier

IPC分类号： G01V3/00

CPC分类号： G01R33/56509 ,  G01R33/4828 ,  G01R33/485 ,  G01R33/56341 ,  G01R33/56366

摘要： In a magnetic resonance method and apparatus, a series of magnetic resonance exposures of an examination subject is generated by implementing multiple first measurements (data acquisitions) with variation of a measurement parameter from acquisition-to-acquisition, which strongly influences a contrast of the first material type excited in the first measurements, implementing multiple second measurements in which a second material type is essentially selectively imaged that is less contrast-dependent with regard to this measurement parameter in a processor calculating spatial correction values for image data of the first measurements based on spatial differences between image data of different second measurements, and, also in the processor, spatially correcting image data of the first measurements (Di) and/or registration of image data of different first measurements to one another on the basis of the correction values.

摘要翻译： 在磁共振方法和装置中，通过采集与获取之间的测量参数的变化实现多次第一测量（数据采集）来产生检查对象的一系列磁共振曝光，这强烈地影响第一 在第一测量中激发的材料类型，实现多个第二测量，其中基本上选择性地成像第二材料类型，其在处理器中对于该测量参数的对比度依赖性较小，该处理器基于第一测量结果计算第一测量的图像数据的空间校正值，基于 基于校正值，不同的第二测量的图像数据之间的空间差异，以及在处理器中，空间校正第一测量（Di）的图像数据和/或不同的第一测量的图像数据的对准。

公开(公告)号：US20130127462A1

公开(公告)日：2013-05-23

申请号：US13679782

申请日：2012-11-16

申请人： Thorsten Feiweier ,  Thorsten Speckner

发明人： Thorsten Feiweier ,  Thorsten Speckner

IPC分类号： G01R33/48

CPC分类号： G01R33/48 ,  G01R33/3415 ,  G01R33/4835 ,  G01R33/543

摘要： A receiving device for magnetic resonance (MR) image signals of a body is operated in an MR system such that for at least one coil element of the receiving device, a space domain, in which a spatial sensitivity of the coil element satisfies a predetermined criterion, is determined. A center frequency and a bandwidth of the MR image signal radiated by the body in the space domain are determined for the space domain. A receive path disposed downstream of the coil element is parameterized for operation at the determined center frequency and with the determined bandwidth.

摘要翻译： 用于身体的磁共振（MR）图像信号的接收装置在MR系统中操作，使得对于接收装置的至少一个线圈元件，空间域，其中线圈元件的空间灵敏度满足预定标准 ， 决心，决意，决定。 空间域中的身体辐射的MR图像信号的中心频率和带宽被确定。 设置在线圈元件下游的接收路径被参数化以在确定的中心频率和确定的带宽下操作。

公开(公告)号：US08111069B2

公开(公告)日：2012-02-07

申请号：US12486087

申请日：2009-06-17

申请人： Thorsten Feiweier

发明人： Thorsten Feiweier

IPC分类号： G01V3/00

CPC分类号： G01R33/385 ,  G01R33/56518 ,  G01R33/56572 ,  G01R33/56581

摘要： A magnetic resonance system has a basic magnet system that generates a temporally static, spatially homogeneous basic magnetic field in an examination volume of the magnetic resonance system, and a radio-frequency system. An overlay system generates overlay fields in the examination volume that, together with the basic field, form a complete field. The overlay system has at least one first order field system and at least one second order field system. The first order field system generates fields that, to a first approximation, exhibit a spatial dependency of the first order. The second order field system generates fields that, to a first approximation, exhibit a spatial dependency of the second order. A control device operates the radio-frequency system with an operating frequency and controls the first and second order field systems to cause a deviation between the complete field and a desired gradient to exhibit a spatial dependency of the second order and to satisfy a minimum condition within a correction volume.

摘要翻译： 磁共振系统具有在磁共振系统的检查体积中产生时间上静止的，空间上均匀的基本磁场的基本磁体系统和射频系统。 覆盖系统在检查卷中生成覆盖字段，与查询卷一起形成一个完整的字段。 覆盖系统具有至少一个第一阶场系统和至少一个二阶场系统。 第一阶场系统产生对于第一近似呈现第一阶的空间依赖性的场。 第二阶场系统产生对第一近似表现出二阶空间依赖性的场。 控制装置以操作频率操作射频系统，并且控制第一和第二阶场系统以引起完整场和期望梯度之间的偏差以呈现第二阶的空间依赖性，并满足第 校正量。

公开(公告)号：US20110304334A1

公开(公告)日：2011-12-15

申请号：US13157503

申请日：2011-06-10

申请人： Thorsten Feiweier

发明人： Thorsten Feiweier

IPC分类号： G01R33/44 ,  G01R33/28

CPC分类号： G01R33/56341 ,  G01R33/56518

摘要： In a magnetic resonance (MR) apparatus and an operating method for the apparatus, image distortions are corrected that occur in exposures of diffusion-weighted MR images of an examination subject.A diffusion-weighted image is acquired using a first acquisition process.Another diffusion-weighted reference image is acquired using a second acquisition process that is different than the first acquisition process.The second acquisition process causes significantly smaller eddy current-dependent image distortions than the first acquisition process given the same b-value.Correction parameters to correct the image distortions of the diffusion-weighted image are determined by comparing the diffusion-weighted image with the reference image in order to determine the correction parameters such that the diffusion-weighted image can be converted into the reference image with the aid of the correction parameters.

摘要翻译： 在磁共振（MR）装置和装置的操作方法中，校正在检查对象的扩散加权的MR图像的曝光中发生的图像失真。 使用第一获取处理获取扩散加权图像。 使用不同于第一获取过程的第二获取过程获取另一扩散加权参考图像。 第二采集过程导致与给定相同b值的第一次采集过程相比，显着较小的涡流依赖图像失真。 通过将扩散加权图像与参考图像进行比较来确定弥补加权图像的图像失真的校正参数，以便确定校正参数，使得可以借助于扩散加权图像将扩散加权图像转换成参考图像 的校正参数。

公开(公告)号：US20110234221A1

公开(公告)日：2011-09-29

申请号：US13071778

申请日：2011-03-25

申请人： Thorsten Feiweier

发明人： Thorsten Feiweier

IPC分类号： G01R33/48

CPC分类号： G01R33/56563 ,  G01R33/4818 ,  G01R33/56518 ,  G01R33/56536 ,  G01R33/56554

摘要： In a magnetic resonance system and operating method to determine phase correction parameters for a phase correction in MR image data, first and second phase correction data sets are thereby acquired and correlations are calculated between data of the second phase correction data set and data of the first phase correction data set. Phase correction parameters are determined, such as coefficients of a power series that approximates a curve of a phase difference between phase curves of the second and first phase correction data sets.

摘要翻译： 在用于确定MR图像数据中的相位校正的相位校正参数的磁共振系统和操作方法中，由此获取第一和第二相位校正数据组，并且在第二相位校正数据组的数据和第一相位校正数据的数据之间计算相关性 相位校正数据集。 确定相位校正参数，例如近似第二和第一相位校正数据集的相位曲线之间的相位差的曲线的功率系列的系数。

公开(公告)号：US20100286802A1

公开(公告)日：2010-11-11

申请号：US12777378

申请日：2010-05-11

申请人： Thorsten Feiweier ,  Daniel Fischer ,  Hendrik Jeschke ,  Thorsten Speckner ,  Stephan Stoecker

发明人： Thorsten Feiweier ,  Daniel Fischer ,  Hendrik Jeschke ,  Thorsten Speckner ,  Stephan Stoecker

IPC分类号： G06F17/00

CPC分类号： G01R33/54 ,  A61B5/055 ,  G01R33/546

摘要： In an imaging system having a number of subsystems and a control device that controls the subsystems in a coordinated manner to implement a measurement sequence and an operating method therefor, sequence control data that define different functional sub-sequences of the measurement sequence are transmitted to the control device. Different active volumes are associated with the functional sub-sequences. In addition to the sequence control data, active volume position data are provided to the control device that define bearing and extent of the active volumes associated with the different functional sub-sequences. Control signals to implement the measurement sequence for the different subsystems are generated automatically by the control device based on the sequence control data and the active volume position data so that the individual functional sub-sequences are locally optimized at least with regard to a sub-region of their associated active volume.

摘要翻译： 在具有多个子系统和控制装置的成像系统中，以协调的方式控制子系统以实现测量序列及其操作方法，定义测量序列的不同功能子序列的序列控制数据被发送到 控制装置 不同的活动卷与功能子序列相关联。 除了序列控制数据之外，将有效体积位置数据提供给控制装置，其定义与不同功能子序列相关联的活动体的轴承和范围。 用于实现不同子系统的测量序列的控制信号由控制装置基于序列控制数据和有效体积位置数据自动生成，使得至少关于子区域对各个功能子序列进行局部优化 的相关活动量。

公开(公告)号：US20090309594A1

公开(公告)日：2009-12-17

申请号：US11508813

申请日：2006-08-22

申请人： Thorsten Feiweier ,  Razvan Lazar

发明人： Thorsten Feiweier ,  Razvan Lazar

IPC分类号： G01R33/48

CPC分类号： G01R33/3678 ,  G01R33/288 ,  G01R33/5612 ,  G01R33/5659

摘要： In an MR imaging method and apparatus which MR images with improved signal intensity, improved signal-noise ratio, improved contrast and improved image homogeneity can be acquired, the polarization state of the magnetic field of the RF pulses radiated into the measurement subject and of the resonance signals emitted by the measurement subject are distorted by the interaction with electrically-active materials of the measurement subject. In the transmission branch of the RF system the RF pulses emitted by a transmission coil are pre-distorted with regard to their polarization state. The sensitivity of the reception branch is optimized such that it is capable of detecting resonance signals independent of their polarization state.

摘要翻译： 在可以获得具有改善的信号强度，改善的信噪比，改善的对比度和改进的图像均匀性的MR图像的MR成像方法和装置中，辐射到测量对象中的RF脉冲的磁场的偏振态 由测量对象发射的共振信号通过与测量对象的电活性材料的相互作用而变形。 在RF系统的传输分支中，由发射线圈发射的RF脉冲关于它们的极化状态是预失真的。 接收分支的灵敏度被优化，使得它能够独立于它们的极化状态来检测谐振信号。

公开(公告)号：US20090240379A1

公开(公告)日：2009-09-24

申请号：US12407853

申请日：2009-03-20

申请人： Thorsten Feiweier

发明人： Thorsten Feiweier

IPC分类号： G06F1/26

CPC分类号： G05B19/02 ,  A61B5/055 ,  A61B6/00 ,  A61B6/586 ,  A61B8/00 ,  G01R33/54 ,  G01R33/543 ,  G16H40/20

摘要： A computer receives information about a measurement sequence to be implemented by a medical imaging system. The computer determines at least one group of preliminary control sequences for power control devices of the medical imaging system so that the power control devices are caused to control (activate) image-influencing emission devices of the imaging medical system corresponding to the determined control sequences, and (insofar as it concerns the control of the image-influencing emission devices) with the measurement sequence to be implemented. The computer determines a load state curve for each group of preliminary control sequences using a model of at least the image-influencing emission devices and the power control devices for these devices using the respective initial load state and the respective control sequence of the image-influencing emission devices and the power control devices. The computer checks for each group whether each load state curve determined for this group remains below a load limit. The computer outputs as final control sequences the preliminary control sequences of one of the groups whose determined load state curves remain below the load limit.

摘要翻译： 计算机接收关于由医学成像系统实现的测量序列的信息。 计算机确定医疗成像系统的功率控制装置的至少一组初步控制序列，使得使得功率控制装置控制（激活）对应于所确定的控制序列的成像医疗系统的影像影响发射装置， 并且（其涉及对图像影响发射装置的控制）与要实现的测量顺序相关联。 计算机使用至少影像影响发射装置的模型和这些装置的功率控制装置使用各自的初始负载状态和图像影响的相应控制顺序来确定每组初步控制序列的负载状态曲线 发射装置和功率控制装置。 计算机检查每个组是否为该组确定的每个负载状态曲线是否低于负载限制。 计算机作为最终控制序列输出其确定的负载状态曲线保持低于负载极限的组之一的初步控制序列。

公开(公告)号：US07573266B2

公开(公告)日：2009-08-11

申请号：US11612802

申请日：2006-12-19

申请人： Thorsten Feiweier ,  Peter Heubes ,  Thorsten Speckner

发明人： Thorsten Feiweier ,  Peter Heubes ,  Thorsten Speckner

IPC分类号： G01V3/00

CPC分类号： G01R33/583 ,  G01R33/586

摘要： In a method for adjustment of the field strength of radio-frequency pulses as well as a magnetic resonance measurement system, radio-frequency pulses are emitted by a radio-frequency antenna of a magnetic resonance measurement system in a magnetic resonance measurement. A test volume slice is initially excited by emission of radio-frequency pulses with a defined pulse amplitude by the appertaining radio-frequency antenna and one-dimensional, spatially-resolved characteristic values are determined along an extent direction of the test volume slice. The one-dimensional, spatially-resolved characteristic values respectively represent a local field strength of the B1 field in strips of the test volume slice running perpendicular to the extent direction. An average value of the determined characteristic values is then formed over at least over one determined segment along the extent direction of the test volume slice. A pulse amplitude of the radio-frequency pulses that is to be set for the magnetic resonance measurement to be implemented is determined on the basis of the average value.

摘要翻译： 在用于调整射频脉冲的场强的方法以及磁共振测量系统中，由磁共振测量系统的射频天线在磁共振测量中发射射频脉冲。 最初通过用相应的射频天线发射具有定义的脉冲幅度的射频脉冲来激发测试体积片，并且沿着测试体积片的范围方向确定一维的空间分辨特征值。 一维空间分辨特征值分别表示垂直于范围方向运行的测试体积切片中的B1场的局部场强。 然后，沿着测试体积切片的扩展方向在至少一个确定的段上形成所确定的特征值的平均值。 基于平均值来确定要实现的磁共振测量要设置的射频脉冲的脉冲幅度。