公开(公告)号：US20100271021A1

公开(公告)日：2010-10-28

申请号：US12430546

申请日：2009-04-27

申请人： Kecheng Liu ,  YongMing Dai ,  Tiejun Zhao ,  Thorsten Feiweier ,  Jing An

发明人： Kecheng Liu ,  YongMing Dai ,  Tiejun Zhao ,  Thorsten Feiweier ,  Jing An

IPC分类号： G01R33/48 ,  G01R33/44

CPC分类号： G01R33/56341

摘要： An apparatus and method for obtaining diffusion weighted magnetic resonance images (DW-MRI) is described. The properties of the diffusion tensor in tissue are measured by applying a diffusion weighting gradient oriented along a plurality of measurement axes. The value of the magnetic field is increased by using as many of the magnetic gradient coils as are effective in contributing the gradient field strength along the axis being. In regions where the magnetic field gradient is increased, the echo time (TE) may be decreased, increasing the signal-to-noise ratio of the measurements. Alternatively, the number of measurements than are averaged to achieve a particular image quality may be decreased, reducing the patient exposure time.

摘要翻译： 描述了用于获得扩散加权磁共振图像（DW-MRI）的装置和方法。 通过施加沿多个测量轴定向的扩散加权梯度来测量组织中的扩散张量的性质。 通过使用有效地贡献沿轴线的梯度场强度的磁化梯度线圈数来增加磁场的值。 在磁场梯度增加的区域中，可以减小回波时间（TE），增加测量的信噪比。 或者，可以减少平均以获得特定图像质量的测量次数，减少患者暴露时间。

公开(公告)号：US07821266B2

公开(公告)日：2010-10-26

申请号：US12184399

申请日：2008-08-01

申请人： Thorsten Feiweier

发明人： Thorsten Feiweier

IPC分类号： G01V3/00

CPC分类号： G01R33/54 ,  G01R33/543 ,  G01R33/546 ,  G01R33/58

摘要： In a method and computerized device for determination of imaging parameters for the acquisition of a magnetic resonance image of an examination subject, initial imaging parameters are established, a calculation is made, based on the initial imaging parameters, of signal intensities for tissue types that occur at least in a portion of the examination subject, and the imaging parameters for the acquisition of the magnetic resonance image under are adapted dependent on the calculated signal intensities.

摘要翻译： 在用于确定用于获取检查对象的磁共振图像的成像参数的方法和计算机化装置中，建立初始成像参数，基于初始成像参数计算出现的组织类型的信号强度 至少在检查对象的一部分中，并且用于获取磁共振图像的成像参数根据计算的信号强度而适应。

公开(公告)号：US07492156B2

公开(公告)日：2009-02-17

申请号：US11095159

申请日：2005-03-31

申请人： Yvonne Candidus ,  Thorsten Feiweier ,  Wilhelm Horger ,  Jürgen Huber ,  Razvan Lazar ,  Melanie Schmitt ,  Lothar Schön

发明人： Yvonne Candidus ,  Thorsten Feiweier ,  Wilhelm Horger ,  Jürgen Huber ,  Razvan Lazar ,  Melanie Schmitt ,  Lothar Schön

IPC分类号： G01V3/00 ,  A61B5/00

CPC分类号： G01R33/28 ,  G01R33/34 ,  G01R33/5659 ,  Y10T29/49

摘要： A dielectric element is formed of a dielectric material exhibiting a magnetic resonance relaxation time, with a relaxation agent incorporated in the dielectric material that reduces the relaxation time of the dielectric material. The dielectric element is adapted for placement on a subject while magnetic resonance data are acquired from the subject, and locally influences the B1 field distribution in the subject during the acquisition of magnetic resonance data.

公开(公告)号：US20090041318A1

公开(公告)日：2009-02-12

申请号：US12219613

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： G01R33/56 ,  G01R33/54

CPC分类号： A61B6/032 ,  A61B5/11 ,  A61B5/7285 ,  A61B6/037 ,  A61B6/541 ,  A61B8/00 ,  A61B8/4416 ,  G06F19/00

摘要： A method is disclosed for recording measured data of a patient while taking account of movement operations by way of a medical device that is designed both for recording movement-related measured data, in particular measured data of high temporal resolution and/or measured data that can be interpolated with regard to movement operations, with the aid of an imaging method and/or by means of at least one sensor element, and also for recording nuclear medicine measured data, in particular of lower temporal resolution. In at least one embodiment, the method includes recording nuclear medicine measured data with the aid of the medical device; simultaneously recording movement-related measured data with the aid of the medical device; determining at least one item of movement information relating to at least one movement operation of the patient and/or in the body of the patient by evaluating at least a portion of the recorded measured data of high temporal resolution on the part of a computing device of the medical device; and adapting at least one item of attenuation correction information available for the computing device and serving for reconstructing the nuclear medicine measured data, doing so as a function of the at least one determined item of movement information.

摘要翻译： 公开了一种用于记录患者的测量数据的方法，同时考虑到通过设计用于记录运动相关测量数据的医疗设备，特别是高时间分辨率的测量数据和/或可测量数据的测量数据， 借助于成像方法和/或通过至少一个传感器元件，以及用于记录核医学测量数据，特别是用于记录较低时间分辨率的内插关于移动操作。 在至少一个实施例中，该方法包括借助医疗装置记录核医学测量数据; 借助医疗设备同时记录运动相关测量数据; 通过在计算设备的一部分上评估所记录的高时间分辨率测量数据的至少一部分来确定与患者的至少一个移动操作和/或患者身体有关的至少一个移动信息项 医疗器械; 以及修改可用于所述计算设备的至少一项衰减校正信息，并且用于重构所述核医学测量数据，作为所述至少一个确定的运动信息项的函数。

公开(公告)号：US20090018431A1

公开(公告)日：2009-01-15

申请号：US12216293

申请日：2008-07-02

申请人： Thorsten Feiweier ,  Diana Martin ,  Gunther Platsch ,  Sebastian Schmidt ,  Kristin Schmiedehausen ,  Michael Szimtenings

发明人： Thorsten Feiweier ,  Diana Martin ,  Gunther Platsch ,  Sebastian Schmidt ,  Kristin Schmiedehausen ,  Michael Szimtenings

IPC分类号： A61B5/05

CPC分类号： G01R33/481 ,  A61B5/0035 ,  A61B5/04008 ,  A61B5/4094 ,  A61B6/037 ,  A61B6/501 ,  A61B6/5247

摘要： A method and an apparatus are disclosed for imaging functional processes in the brain. In order to be able to correlate the results of MEG examinations with anatomical information and metabolic data, a positron emission tomography measurement is recorded in at least one embodiment by at least one radiation detector, a magnetic resonance imaging measurement is recorded by a coil and a radio-frequency antenna device and a magnetoencephalography measurement is recorded by a plurality of magnetic field sensors, the positron emission tomography measurement and the magnetic resonance imaging measurement being substantially undertaken at the same time, so that the records of the positron emission tomography measurement and the magnetic resonance tomography measurement are isocentric. In at least one embodiment, an evaluation apparatus is provided for carrying out a spatial correlation between the magnetoencephalography measurement and the magnetic resonance imaging measurement, so that registration between the magnetoencephalography measurement and the positron emission tomography measurement results.

摘要翻译： 公开了一种用于成像脑中的功能过程的方法和装置。 为了能够将MEG检查的结果与解剖信息和代谢数据相关联，在至少一个实施例中通过至少一个辐射检测器记录正电子发射断层摄影测量，磁共振成像测量由线圈和 射频天线装置和脑磁图测量由多个磁场传感器记录，正电子发射断层摄影测量和磁共振成像测量基本上同时进行，使得正电子发射断层摄影测量和 磁共振断层扫描测量是同中心的。 在至少一个实施例中，提供了一种用于执行脑磁图测量和磁共振成像测量之间的空间相关性的评估装置，从而导致脑磁图测量与正电子发射断层摄影测量之间的配准。

公开(公告)号：US20090005678A1

公开(公告)日：2009-01-01

申请号：US12213745

申请日：2008-06-24

申请人： Kristin Schmiedehausen ,  Gunther Platsch ,  Thorsten Feiweier ,  Diana Martin ,  Sebastian Schmidt ,  Michael Szimtenings

发明人： Kristin Schmiedehausen ,  Gunther Platsch ,  Thorsten Feiweier ,  Diana Martin ,  Sebastian Schmidt ,  Michael Szimtenings

IPC分类号： A61B6/03

CPC分类号： A61B6/501 ,  A61B6/037 ,  A61B6/507 ,  A61B34/10 ,  A61B90/36 ,  A61B2090/364 ,  A61B2090/374

摘要： A computer-implemented method is disclosed for determining and displaying an access corridor to a target area in the brain of a patient, as well as an imaging arrangement suited to this. In at least one embodiment, the method includes a) generating a first image of the brain via positron emission tomography, b) discriminating the target area relative to its surroundings via electronic image processing, c) generating a second image of the brain via magnetic resonance imaging while acquiring at least one anatomical structure, d) generating a third image of the brain via an imaging method displaying physiological processes for identifying at least one functional area of the brain that must not be injured in any circumstances, e) determining an access corridor to the target area while omitting the at least one functional area of the brain, and f) generating and displaying a fourth image of the brain in which the target area, the at least one functional area of the brain, the at least one anatomical structure and the access corridor are displayed, wherein steps a) to d) are carried out, one after another in quick succession, in a single frame of reference without repositioning the patient, or are even carried out simultaneously.

摘要翻译： 公开了一种计算机实现的方法，用于确定和显示患者脑中的目标区域的通道走廊以及适合于此的成像装置。 在至少一个实施例中，该方法包括：a）通过正电子发射断层摄影术产生脑的第一图像，b）通过电子图像处理区分相对于其周围的目标区域，c）通过磁共振产生大脑的第二图像 成像，同时获取至少一个解剖结构，d）通过显示生理过程的成像方法产生大脑的第三图像，用于识别在任何情况下不得受伤的脑的至少一个功能区域，e）确定通路走廊 到目标区域，同时省略脑的至少一个功能区域，以及f）产生和显示脑的第四图像，其中目标区域，脑的至少一个功能区域，至少一个解剖结构 并且显示进入通道，其中步骤a）至d）在一个单独的参考框架中以快速连续的方式相继地执行而不重新定位 或者甚至同时进行。

公开(公告)号：US07432713B2

公开(公告)日：2008-10-07

申请号：US11756780

申请日：2007-06-01

申请人： Yvonne Candidus ,  Thorsten Feiweier ,  Jürgen Huber ,  Lothar Schön ,  Thorsten Speckner

发明人： Yvonne Candidus ,  Thorsten Feiweier ,  Jürgen Huber ,  Lothar Schön ,  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：US20060255800A1

公开(公告)日：2006-11-16

申请号：US11404150

申请日：2006-04-14

申请人： Thorsten Feiweier

发明人： Thorsten Feiweier

IPC分类号： G01V3/00

CPC分类号： G01R33/3607 ,  G01R33/34046

摘要： A magnetic resonance apparatus has a cylindrical body coil composed of a number of resonator segments distributed around the circumference and a control device for separate activation of the individual resonator segments. The resonator segments are electromagnetically decoupled from one another. The activation generates a radio-frequency magnetic field inside the coil for spin excitation in an examination volume. The resonator segments are activated such that the excitation field is generated only in at least one first sub-volume forming the examination volume, and at least one second sub-volume, that is not to be excited, is essentially free of the excitation field.

摘要翻译： 磁共振装置具有由围绕圆周分布的多个谐振器段组成的圆柱体线圈和用于单独激活各个谐振器段的控制装置。 谐振器段彼此电磁耦合。 激活在线圈内产生用于自动激发的检查体积中的射频磁场。 谐振器段被激活，使得激励场仅在形成检查体积的至少一个第一子体积中产生，并且不被激励的至少一个第二子体积基本上没有激励场。

公开(公告)号：US07064546B2

公开(公告)日：2006-06-20

申请号：US10726238

申请日：2003-12-02

申请人： Thorsten Feiweier

发明人： Thorsten Feiweier

IPC分类号： G01V3/00

CPC分类号： G01R33/583

摘要： In magnetic resonance tomography apparatus and method for determining the field strength of high-frequency pulses which are emitted during a magnetic resonance measurement by the antenna, a magnetic resonance signal excited by a radio-frequency pulse or a radio-frequency pulse sequence is measured, and a phase of the magnetic resonance signal is determined. Based on this phase, the field strength is then determined.

摘要翻译： 在用于确定由天线进行磁共振测量期间发射的高频脉冲的场强的磁共振断层摄影装置和方法中，测量由射频脉冲或射频脉冲序列激发的磁共振信号， 并且确定磁共振信号的相位。 基于该阶段，确定场强。

公开(公告)号：US07038453B2

公开(公告)日：2006-05-02

申请号：US10921606

申请日：2004-08-19

申请人： Thorsten Feiweier ,  Peter Heubes

发明人： Thorsten Feiweier ,  Peter Heubes

IPC分类号： G01V3/00

CPC分类号： G01R33/583

摘要： In a method and magnetic resonance tomography apparatus for spatially resolved measurement of the magnetic high frequency field distribution in the apparatus, a double echo high frequency pulse sequence with a first excitation pulse following by at least two refocusing pulses are emitted for generation of a first echo and a following second echo. At least the excitation pulse is slice selective. In an excitation layer defined by the slice selective excitation pulse a first echo image and second echo image are spatially resolved by using suitable gradient pulses for phase or frequency encoding Using the relationships of the amplitudes of the first and second echo image in the various locations the flip angles representing the field strength at the relevant locations in the relevant slice are determined.

摘要翻译： 在用于设备中的磁性高频场分布的空间分辨测量的方法和磁共振断层摄影装置中，发射具有随后至少两个重聚焦脉冲的第一激励脉冲的双回波高频脉冲序列，用于产生第一回波 和第二个回声。 至少激励脉冲是片选择性的。 在由切片选择性激发脉冲限定的激发层中，通过使用用于相位或频率编码的合适的梯度脉冲来对第一回波图像和第二回波图像进行空间分辨。使用各个位置中的第一和第二回波图像的振幅的关系， 确定表示相关切片中的相关位置处的场强的翻转角。