公开(公告)号：US06587707B2

公开(公告)日：2003-07-01

申请号：US09880197

申请日：2001-06-13

申请人： Kay Nehrke ,  Peter Boernert ,  Bernd Aldefeld ,  Michael Harald Kuhn ,  Dirk Manke

发明人： Kay Nehrke ,  Peter Boernert ,  Bernd Aldefeld ,  Michael Harald Kuhn ,  Dirk Manke

IPC分类号： A61B5055

CPC分类号： G01R33/5676

摘要： An MR imaging method wherein motion of an object to be imaged is examined during a preparation phase preceding the actual MR examination. The necessary sequences for the subsequent MR examination are modified during the examination to compensate for the motion based on motion parameters calculated during the preparation phase or motion parameters derived from the motion parameters calculated during the preparation phase based on a correlation between the motion parameters.

摘要翻译： 一种MR成像方法，其中在实际MR检查之前的准备阶段检查待成像对象的运动。 在检查期间修改用于后续MR检查的必要序列，以基于在准备阶段期间计算的运动参数或基于运动参数之间的相关性在准备阶段期间计算的运动参数导出的运动参数来补偿运动。

公开(公告)号：US06813512B2

公开(公告)日：2004-11-02

申请号：US09976328

申请日：2001-10-12

申请人： Bernd Aldefeld ,  Friedrich-Karl Beckmann ,  Holger Eggers ,  Rolf Udo Dieter Kobs ,  Erhard Paul Artur Klotz ,  Michael Harald Kuhn ,  Dirk Manke ,  Volker Rasche ,  Georg Weidinger

发明人： Bernd Aldefeld ,  Friedrich-Karl Beckmann ,  Holger Eggers ,  Rolf Udo Dieter Kobs ,  Erhard Paul Artur Klotz ,  Michael Harald Kuhn ,  Dirk Manke ,  Volker Rasche ,  Georg Weidinger

IPC分类号： A61B500

CPC分类号： A61B5/065 ,  A61B5/055 ,  A61B5/06 ,  A61B34/20 ,  A61B90/361 ,  A61B90/37 ,  A61B2017/00243 ,  A61B2034/2051 ,  A61B2034/2063 ,  A61B2090/374 ,  A61B2090/3782 ,  A61B2090/3958

摘要： A device for determining the position of a medical instrument that is introduced into an object to be examined is also used for imaging the vicinity of the medical instrument. In order to enable the acquisition of instantaneous position information and image information from the vicinity of the medical instrument for all kinds of medical instruments, a localization device that is arranged in the end zone of the medical instrument that is to be introduced determines the position of the medical instrument within the object to be examined; at the same time image information is acquired in the vicinity of the medical instrument by an image acquisition device that is arranged on the medical instrument and on the basis of the position thus determined the position of the medical instrument (3) is reproduced in a survey image of the object to be examined and images of the vicinity of the object to be examined are displayed on the basis of the image information acquired.

摘要翻译： 用于确定被引入待检查物体的医疗器具的位置的装置也用于对医疗器械附近进行成像。 为了能够从用于各种医疗器械的医疗器械附近获取瞬时位置信息和图像信息，布置在待引入的医疗器械的端部区域中的定位装置决定了 待检对象内的医疗器械; 同时通过布置在医疗器械上的图像获取装置在医疗器械附近获取图像信息，并且基于如此确定的位置，在调查中再现医疗器械（3）的位置 基于所获取的图像信息，显示要被检查的对象的图像和被检查对象的附近的图像。

公开(公告)号：US20090177076A1

公开(公告)日：2009-07-09

申请号：US12296936

申请日：2007-04-05

申请人： Bernd Aldefeld ,  Peter Boernert ,  Jochen Keupp ,  Johan Samuel Van Den Brink

发明人： Bernd Aldefeld ,  Peter Boernert ,  Jochen Keupp ,  Johan Samuel Van Den Brink

IPC分类号： A61B5/05

CPC分类号： G01R33/56375 ,  G01R33/56383 ,  G01R33/56509 ,  G01R33/5673 ,  G01R33/5676

摘要： A magnetic resonance examination system has an object carrier (14) to move an object to be examined relative to the field of view. A monitoring system (33) monitors examination circumstances under which magnetic resonance signals are acquired from the object within the field of view. In particular the monitoring system monitors the degree of physiological motion in the patient to be examined. A velocity control system (32) to control the velocity of the movement of the object relative to the field of view and to control the velocity on the basis of the monitored examination circumstances, i.e. the degree of physiological motion.

摘要翻译： 磁共振检查系统具有用于相对于视场移动待检查物体的物体载体（14）。 监视系统（33）监视从视野内的物体获取磁共振信号的检查情况。 特别地，监测系统监测待检查患者的生理运动程度。 一种速度控制系统（32），用于控制物体相对于视场的移动速度，并且基于所监视的检查情况即生理运动的程度来控制速度。

公开(公告)号：US20090033327A1

公开(公告)日：2009-02-05

申请号：US11911723

申请日：2006-04-07

申请人： Bernd Aldefeld ,  Peter Boernert ,  Jochen Keupp

发明人： Bernd Aldefeld ,  Peter Boernert ,  Jochen Keupp

IPC分类号： G01R33/563

CPC分类号： G01R33/56375

摘要： A continuous moving table magnetic resonance imaging method is proposed where a ‘lateral’ read out is performed that is transverse to the direction of motion. This magnetic resonance imaging method for imaging a moving object includes spatially selective RF excitations are applied for respective phase-encodings. The sub-volume is excited by the spatially selective RF excitation moves with the motion of the object for respective subsets of primary phase-encodings. Acquisition of magnetic resonance signals is performed from a three-dimensional sub-volume of the object. The magnetic resonance signals are read encoded in a direction transverse to the direction of motion of the object and phase-encoded in at least the direction of motion of the object.

摘要翻译： 提出了一种连续移动台磁共振成像方法，其中执行横向于运动方向的“横向”读出。 用于对运动物体成像的这种磁共振成像方法包括空间选择性的RF激励用于各自的相位编码。 子体积被空间选择性RF激发移动与物体的运动激励，以相应的主相位编码子集。 从对象的三维子体积执行磁共振信号的获取。 磁共振信号在横向于物体的运动方向的方向上被读取，并且至少在物体的运动方向上进行相位编码。

公开(公告)号：US20090003674A1

公开(公告)日：2009-01-01

申请号：US11909167

申请日：2006-03-27

申请人： Jochen Keupp ,  Peter Boernert ,  Bernd Aldefeld

发明人： Jochen Keupp ,  Peter Boernert ,  Bernd Aldefeld

IPC分类号： G06K9/54

CPC分类号： G01R33/56375 ,  G01R33/5611

摘要： During continuous moving of an imaging subject (12) through a scanner field of view (20), k-space data are acquired using a plurality of radio frequency coils (24, 26). The acquiring includes undersampling of k-space in at least one undersampled direction. A weighted transform (62) from k-space to real space is defined for at least one undersampled direction. The weighted transform incorporates patient position-dependent coil sensitivity weighting factors and a Fourier transform. The acquired k-space data are hybrid transformed along the direction of continuous moving to define hybrid space data having a real space dimension in the transformed direction of continuous moving and a k-space dimension in a transverse direction that is transverse to the direction of continuous moving. The hybrid space data are transformed along the transverse direction to generate a reconstructed image. The hybrid transforming and the transforming employ the defined weighted transform (62) conditional upon the corresponding direction being undersampled.

摘要翻译： 在成像对象（12）通过扫描仪视野（20）的连续移动期间，使用多个射频线圈（24,26）获取k空间数据。 获取包括至少一个欠采样方向的k空间欠采样。 对于至少一个欠采样方向，定义从k空间到实际空间的加权变换（62）。 加权变换包括患者位置相关的线圈灵敏度加权因子和傅里叶变换。 所获取的k空间数据沿着连续移动的方向被混合变换以限定在连续移动的变换方向上具有实际空间尺寸的混合空间数据和横向于连续方向的横向方向上的k空间尺寸 移动。 混合空间数据沿着横向变换以产生重构图像。 混合变换和变换采用定义的加权变换（62），条件是相应方向被欠采样。

公开(公告)号：US07436178B2

公开(公告)日：2008-10-14

申请号：US10595805

申请日：2004-11-03

申请人： Jochen Keupp ,  Bernd Aldefeld ,  Peter Boernert

发明人： Jochen Keupp ,  Bernd Aldefeld ,  Peter Boernert

IPC分类号： G01V3/00

CPC分类号： G01R33/56375 ,  G01R33/5611 ,  G01R33/563

摘要： A plurality of global receive coils (24a, 24b, 24c) are stationarily positioned around a fixed field of view (FOV) of a magnetic resonance diagnostic imaging device (10). Each global receive coil receives undersampled phase and frequency encoded data from the stationary field of view. A subject is imaged as it moves continuously through the fixed field of view such that data is collected over a virtual field of view (vFOV) of the subject which is longer than the field of view in a longitudinal direction of subject motion. Centrally encoded k-space data, acquired from each of the global receive coils, is used to generate coil sensitivity patterns (42) which are mapped (44) from the stationary field of view to the virtual field of view. A SENSE reconstruction processor (54) performs a SENSE reconstruction on the virtual field of view data in which reconstructed data is combined and unfolded in accordance with the virtual field of view sensitivity patterns (48) to generate a virtual field of view image representation (60).

摘要翻译： 多个全局接收线圈（24a，24b，24c）被固定地围绕磁共振诊断成像装置（10）的固定视野（FOV）定位。 每个全局接收线圈从静止视场接收欠采样的相位和频率编码数据。 当被摄体连续移动通过固定视野时，对象被成像，使得数据在被摄体的虚拟视野（vFOV）上被收集，所述虚拟视场（vFOV）在主体运动的纵向方向上比视场长。 从每个全局接收线圈获取的集中编码的k空间数据用于产生从静止视场映射到虚拟视场的线圈灵敏度模式（42）。 SENSE重建处理器（54）在虚拟视野数据上执行SENSE重建，其中根据虚拟视场灵敏度模式（48）组合和展开重构数据，以生成虚拟视野图像表示（60 ）。

公开(公告)号：US20070145977A1

公开(公告)日：2007-06-28

申请号：US10595805

申请日：2004-11-03

申请人： Jochen Keupp ,  Bernd Aldefeld ,  Peter Boernert

发明人： Jochen Keupp ,  Bernd Aldefeld ,  Peter Boernert

IPC分类号： G01V3/00

CPC分类号： G01R33/56375 ,  G01R33/5611 ,  G01R33/563

摘要： A plurality of global receive coils (24a, 24b, 24c) are stationarily positioned around a fixed field of view (FOV) of a magnetic resonance diagnostic imaging device (10). Each global receive coil receives undersampled phase and frequency encoded data from the stationary field of view. A subject is imaged as it moves continuously through the fixed field of view such that data is collected over a virtual field of view (vFOV) of the subject which is longer than the field of view in a longitudinal direction of subject motion. Centrally encoded k-space data, acquired from each of the global receive coils, is used to generate coil sensitivity patterns (42) which are mapped (44) from the stationary field of view to the virtual field of view. A SENSE reconstruction processor (54) performs a SENSE reconstruction on the virtual field of view data in which reconstructed data is combined and unfolded in accordance with the virtual field of view sensitivity patterns (48) to generate a virtual field of view image representation (60).

摘要翻译： 多个全局接收线圈（24a，24b，24c）被固定地围绕磁共振诊断成像装置（10）的固定视野（FOV）定位。 每个全局接收线圈从静止视场接收欠采样的相位和频率编码数据。 当被摄体连续移动通过固定视野时，对象被成像，使得数据在被摄体的虚拟视野（vFOV）上被收集，所述虚拟视场（vFOV）在主体运动的纵向方向上比视场长。 从每个全局接收线圈获取的集中编码的k空间数据用于产生从静止视场映射到虚拟视场的线圈灵敏度模式（42）。 SENSE重建处理器（54）在虚拟视野数据上执行SENSE重建，其中根据虚拟视场灵敏度模式（48）组合和展开重构数据，以生成虚拟视野图像表示（60 ）。

公开(公告)号：US07417430B2

公开(公告)日：2008-08-26

申请号：US11568321

申请日：2005-03-30

申请人： Bernd Aldefeld ,  Peter Boernert ,  Jochen Keupp

发明人： Bernd Aldefeld ,  Peter Boernert ,  Jochen Keupp

IPC分类号： G01V3/00

CPC分类号： G01R33/56375 ,  G01R33/5602 ,  G01R33/5605 ,  G01R33/5607 ,  G01R33/56383

摘要： A continuous table motion magnetic resonance imaging system includes a processor (70) for determining values of scan parameters including at least a subject velocity, a field of view length in the direction of the table velocity, and a preparation sequence time. The acquisition includes performing one or more preparatory operations (54) to manipulate image contrast or to update scanning parameters during table motion. A table (16) is provided for continuously moving a supported imaging subject at the determined velocity. A magnetic resonance imaging scanner (10) through which the table continuously moves the subject acquires magnetic resonance imaging data of the imaged subject during the continuous moving using the determined scan parameters. A reconstruction processor (30, 34, 40) reconstructs the acquired data into an image of the field of view.

摘要翻译： 连续台式运动磁共振成像系统包括：处理器（70），用于确定扫描参数的值，所述扫描参数包括至少主体速度，表速度方向上的视场长度以及准备序列时间。 采集包括执行一个或多个准备操作（54）以操纵图像对比度或者在表格运动期间更新扫描参数。 提供了用于以确定的速度连续地移动支撑的成像对象的工作台（16）。 使用所确定的扫描参数，在连续移动期间，桌子连续移动物体的磁共振成像扫描器（10）获取成像对象的磁共振成像数据。 重建处理器（30,34,40）将所获取的数据重建成视场的图像。

公开(公告)号：US20070222442A1

公开(公告)日：2007-09-27

申请号：US11568321

申请日：2005-03-30

申请人： Bernd Aldefeld ,  Peter Boernert ,  Jochen Keupp

发明人： Bernd Aldefeld ,  Peter Boernert ,  Jochen Keupp

IPC分类号： G01V3/00

CPC分类号： G01R33/56375 ,  G01R33/5602 ,  G01R33/5605 ,  G01R33/5607 ,  G01R33/56383

摘要： A continuous table motion magnetic resonance imaging system includes a processor (70) for determining values of scan parameters including at least a subject velocity, a field of view length in the direction of the table velocity, and a preparation sequence time. The acquisition includes performing one or more preparatory operations (54) to manipulate image contrast or to update scanning parameters during table motion. A table (16) is provided for continuously moving a supported imaging subject at the determined velocity. A magnetic resonance imaging scanner (10) through which the table continuously moves the subject acquires magnetic resonance imaging data of the imaged subject during the continuous moving using the determined scan parameters. A reconstruction processor (30, 34, 40) reconstructs the acquired data into an image of the field of view.

摘要翻译： 连续台式运动磁共振成像系统包括：处理器（70），用于确定扫描参数的值，所述扫描参数包括至少主体速度，表速度方向上的视场长度以及准备序列时间。 采集包括执行一个或多个准备操作（54）以操纵图像对比度或者在表格运动期间更新扫描参数。 提供了用于以确定的速度连续地移动支撑的成像对象的工作台（16）。 使用所确定的扫描参数，在连续移动期间，桌子连续移动物体的磁共振成像扫描器（10）获取成像对象的磁共振成像数据。 重建处理器（30,34,40）将所获取的数据重建成视场的图像。

公开(公告)号：US06714011B1

公开(公告)日：2004-03-30

申请号：US09596215

申请日：2000-06-19

申请人： Bernd Aldefeld ,  Johannes Adrianus Overweg

发明人： Bernd Aldefeld ,  Johannes Adrianus Overweg

IPC分类号： G01V300

CPC分类号： G01R33/482 ,  G01R33/4838

摘要： The invention relates to an MR method wherein disturbing MR signals from peripheral regions outside the isocenter are suppressed in that a location-dependent, brief, steady magnetic field is produced simultaneously with an RF pulse. When the field strength of the magnetic field in the peripheral regions is either larger or smaller than that at the isocenter, it can be achieved that exclusively the nuclear magnetization in the peripheral regions is excited, which magnetization can subsequently be dephased. The subsequent MR sequence then influences only the region around the isocenter.

摘要翻译： 本发明涉及一种MR方法，其中抑制了来自等角点之外的外围区域的MR信号，因为与RF脉冲同时产生位置相关的简短的稳定磁场。 当外围区域的磁场的场强大于或小于等角点处的磁场强度时，可以实现仅外围区域的核磁化被激发，随后磁化可以被去相位。 随后的MR序列仅影响等角点周围的区域。