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：US20100266186A1

公开(公告)日：2010-10-21

申请号：US12801801

申请日：2010-06-25

申请人： Franz Hebrank ,  Thorsten Speckner

发明人： Franz Hebrank ,  Thorsten Speckner

IPC分类号： G06K9/40 ,  G06K9/00 ,  G01R33/48

CPC分类号： G01R33/56518

摘要： In one embodiment of the present invention, a method for processing a 2D or 3D reconstruction image is disclosed which is recorded by a magnetic resonance device, including a gradient coil that generates a gradient field, and is distortion-corrected with regard to a given non-linearity—leading to an image distortion—of the gradient field using an algorithm that processes the measurement signals at different measurement points lying in the imaging volume, which algorithm, with respect to each signal processed by it, processes the first input value describing the real gradient field given at the real measurement point of the signal, in which method, for inverse transformation of the distortion-corrected reconstruction image into a distortion-uncorrected reconstruction image, use is made of the first algorithm or a second algorithm corresponding to the first algorithm, which, with respect to each signal processed by it, is given as second input value such a value which describes a fictitious gradient field at the respective distorted measurement point at which the processed signal appears, which is increased or decreased by the non-linear field component of the real gradient field compared with the linear ideal gradient field.

摘要翻译： 在本发明的一个实施例中，公开了一种用于处理2D或3D重建图像的方法，其由磁共振装置记录，所述磁共振装置包括产生梯度场的梯度线圈，并且对于给定非对称 - 使用处理在成像体积中的不同测量点处的测量信号的算法，导致梯度场的图像失真，该算法相对于由其处理的每个信号处理描述第一输入值的第一输入值 在该信号的实际测量点处给出的实际梯度场，其中用于将失真校正的重建图像逆变换为失真未校正的重建图像，使用第一算法或对应于第一算法的第二算法 算法，对于由其处理的每个信号，其被给予为第二输入值，例如描述fic的值 在处理的信号出现的各个失真的测量点处，与线性理想梯度场相比，由实际梯度场的非线性场分量增加或减小的倾斜梯度场。

公开(公告)号：US20100066385A1

公开(公告)日：2010-03-18

申请号：US12585539

申请日：2009-09-17

申请人： Kirstin Jattke ,  Ralf Ladebeck ,  Christian J. Michel ,  Thorsten Speckner

发明人： Kirstin Jattke ,  Ralf Ladebeck ,  Christian J. Michel ,  Thorsten Speckner

IPC分类号： G01R27/28 ,  G01R33/48

CPC分类号： G01T1/1648 ,  A61B6/037 ,  A61B6/5247 ,  G01T1/1603

摘要： A method is disclosed for at least partly determining and/or adapting an attenuation map used for attenuation correction of Positron Emission Tomography image data sets in a combined Magnetic Resonance-Positron Emission Tomography device. In at least one embodiment of the method, at least one one-dimensional magnetic resonance data set of a patient is recorded along one imaging direction; the boundaries of at least one part of the body of the patient intersected by the imaging direction are determined from the one-dimensional magnetic resonance data set; and the attenuation map is determined and/or adapted at least partly as a function of the boundaries determined.

摘要翻译： 公开了一种用于至少部分地确定和/或调整用于组合的磁共振 - 正电子发射断层扫描装置中正电子发射断层摄影图像数据集的衰减校正的衰减图的方法。 在该方法的至少一个实施例中，沿着一个成像方向记录患者的至少一个一维磁共振数据集; 从一维磁共振数据集确定与成像方向相交的病人身体的至少一部分的边界; 并且至少部分地根据确定的边界的函数来确定和/或调整衰减图。

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。

公开(公告)号：US07535225B2

公开(公告)日：2009-05-19

申请号：US12034757

申请日：2008-02-21

申请人： Peter Dietz ,  Andreas Krug ,  Mark James Le Feuvre ,  Annette Lohfink ,  Thorsten Speckner

发明人： Peter Dietz ,  Andreas Krug ,  Mark James Le Feuvre ,  Annette Lohfink ,  Thorsten Speckner

IPC分类号： G01V3/00

CPC分类号： G01R33/3815 ,  G01R33/385

摘要： In an arrangement of a basic field magnet and a gradient coil of a magnetic resonance apparatus, the basic field magnet includes superconducting coils that are arranged in a reservoir with liquid helium for cooling. The helium reservoir is surrounded by a further reservoir, designated as an outer vacuum chamber. A vacuum exists between the outer vacuum chamber and the helium reservoir. A cryoshield is arranged between the outer vacuum chamber and the helium reservoir. The gradient coil is arranged in the inner chamber of the basic field magnet. The cryoshield has additional structure for reinforcement that counteract vibrations of the cryoshield.

摘要翻译： 在磁共振装置的基本场磁体和梯度线圈的布置中，基本场磁体包括布置在具有用于冷却的液氦的存储器中的超导线圈。 氦储存器被另外的储存器包围，指定为外部真空室。 在真空室和氦气储存器之间存在真空。 冷室之间布置在外部真空室和氦气储存器之间。 梯度线圈布置在基本场磁体的内腔中。 冷冻盘具有额外的加固结构，可抵消冷冻岩的振动。

公开(公告)号：US20080197850A1

公开(公告)日：2008-08-21

申请号：US12034757

申请日：2008-02-21

申请人： Peter Dietz ,  Andreas Krug ,  Mark James Le Feuvre ,  Annette Lohfink ,  Thorsten Speckner

发明人： Peter Dietz ,  Andreas Krug ,  Mark James Le Feuvre ,  Annette Lohfink ,  Thorsten Speckner

IPC分类号： G01R33/3815

CPC分类号： G01R33/3815 ,  G01R33/385

摘要： In an arrangement of a basic field magnet and a gradient coil of a magnetic resonance apparatus, the basic field magnet includes superconducting coils that are arranged in a reservoir with liquid helium for cooling. The helium reservoir is surrounded by a further reservoir, designated as an outer vacuum chamber. A vacuum exists between the outer vacuum chamber and the helium reservoir. A cryoshield is arranged between the outer vacuum chamber and the helium reservoir. The gradient coil is arranged in the inner chamber of the basic field magnet. The cryoshield has additional structure for reinforcement that counteract vibrations of the cryoshield.

摘要翻译： 在磁共振装置的基本场磁体和梯度线圈的布置中，基本场磁体包括布置在具有用于冷却的液氦的储存器中的超导线圈。 氦储存器被另外的储存器包围，指定为外部真空室。 在真空室和氦气储存器之间存在真空。 冷室之间布置在外部真空室和氦气储存器之间。 梯度线圈布置在基本场磁体的内腔中。 冷冻盘具有额外的加固结构，可抵消冷冻岩的振动。

公开(公告)号：US20080180102A1

公开(公告)日：2008-07-31

申请号：US12018333

申请日：2008-01-23

申请人： Razvan Lazar ,  Wolfgang Renz ,  Thorsten Speckner

发明人： Razvan Lazar ,  Wolfgang Renz ,  Thorsten Speckner

IPC分类号： G01R33/34

CPC分类号： G01R33/341 ,  G01R33/3415 ,  G01R33/5659

摘要： An arrangement for radiation of a radio-frequency field into an examination subject has a local coil unit with a housing. An insulating dielectric material is embodied at least at one part of the housing in order to passively compensate an inhomogeneity of the B1 field that occurs in the examination subject. An adjustment arrangement allows for fixed but detachable provision of the insulating dielectric material at the housing part.

摘要翻译： 用于将射频场辐射到检查对象中的布置具有带壳体的局部线圈单元。 绝缘介电材料至少体现在壳体的一部分上，以便被动地补偿在检查对象中发生的B1场的不均匀性。 调节装置允许绝缘电介质材料在壳体部分固定但可拆卸地设置。

公开(公告)号：US20070279054A1

公开(公告)日：2007-12-06

申请号：US11756780

申请日：2007-06-01

申请人： Yvonne Candidus ,  Thorsten Feiweier ,  Jurgen Huber ,  Lothar Schon ,  Thorsten Speckner

发明人： Yvonne Candidus ,  Thorsten Feiweier ,  Jurgen Huber ,  Lothar Schon ,  Thorsten Speckner

IPC分类号： G01V3/00

CPC分类号： G01R33/28 ,  G01R33/5659

摘要： A dielectric element for positioning on an examination subject for locally influencing the B1 field distribution during magnetic resonance data acquisition contains a relaxation agent bound to mutually separated particles. The relaxation agent incorporates a paramagnetic substance. In a corresponding method for acquiring magnetic resonance data from an examination subject, such a dielectric element is positioned on the examination subject for locally influencing the B1 field distribution, by homogenizing the B1 field of a magnetic resonance apparatus.

摘要翻译： 用于定位在检查对象上用于在磁共振数据采集期间局部影响B1场分布的电介质元件包含与相互分离的颗粒结合的松弛剂。 松弛剂包含顺磁性物质。 在用于从检查对象获取磁共振数据的相应方法中，这样的电介质元件位于检查对象上，用于局部影响B 1场分布，通过使B＆lt; 1＆ 磁共振装置。

公开(公告)号：US20070145975A1

公开(公告)日：2007-06-28

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，通过磁共振测量系统的射频天线在磁共振测量A中发射射频脉冲。测试体积切片 最初由具有定位的脉冲幅度的射频脉冲的发射激发，并且沿测试体积切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延伸的测试体积片的条带中的B SUB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。