公开(公告)号：DE69632302T2

公开(公告)日：2005-06-23

申请号：DE69632302

申请日：1996-07-11

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： BOERNERT PETER ,  SCHAEFFTER TOBIAS ,  KUHN HARALD

IPC: G01R33/48 ,  A61B5/055 ,  G01R33/483 ,  G01R33/54

Abstract: A magnetic resonance method for imaging a curved portion of a body in which only MR signals in the curved portion of the body are generated by pulse sequences which include RF pulses and temporary magnetic fields. From the received MR signals an image of the curved portion can be reconstructed by use of linear transformations.\!

公开(公告)号：DE60210818D1

公开(公告)日：2006-05-24

申请号：DE60210818

申请日：2002-12-19

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： KATSCHER ULRICH ,  BOERNERT PETER

IPC: G01R33/48 ,  G01R33/561 ,  A61B5/055

Abstract: The invention relates to a parallel MR imaging method in which first a first MR imaging sequence is formed with a selectable minimum number of phase encoding steps and at least two separate MR signal data sets are acquired by means of at least two MR receiving coils. A first MR image is reconstructed from this data while taking into account the spatial sensitivity profiles of the MR receiving coils. In order to improve parallel MR imaging methods of this kind, the invention proposes to evaluate the quality of the reconstructed MR image in a subsequent step of the method and, in dependence upon the result of the evaluation, to either terminate the imaging method or to form a further MR imaging sequence with a number of further phase encoding steps. This procedure can be continued until an adequate MR image quality is reached.

公开(公告)号：DE50108712D1

公开(公告)日：2006-04-06

申请号：DE50108712

申请日：2001-06-12

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： NEHRKE DR ,  BOERNERT PETER ,  ALDEFELD BERND ,  KUHN DR ,  MANKE C O PHILIPS CORP INT PRO

IPC: G01R33/48 ,  G01R33/567 ,  A61B5/055

Abstract: 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.

公开(公告)号：DE10232342A1

公开(公告)日：2004-01-29

申请号：DE10232342

申请日：2002-07-17

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： BOERNERT PETER ,  ALDEFELD BERND

IPC: G01R33/48 ,  G01R33/561 ,  G01R33/54

公开(公告)号：DE10226488A1

公开(公告)日：2003-12-24

申请号：DE10226488

申请日：2002-06-14

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： LEUSSLER CHRISTOPH ,  BOERNERT PETER

IPC: G01R33/34 ,  A61B5/055 ,  G01R33/3415 ,  G01R33/561 ,  G01R33/36

Abstract: An MR device for MR imaging includes an RF coil system. In order to enable switching to and fro between different applications in such an MR device without having to move the patient so as to position a new RF coil system, it is proposed to provide the RF coil system for the transmission and/or reception of RF signals with at least two RF coil arrays which are integrated in one coil former and have been optimized for different applications, each RF coil array comprising at least two RF coils which are decoupled from one another.

公开(公告)号：DE112012001793T5

公开(公告)日：2014-01-16

申请号：DE112012001793

申请日：2012-04-11

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： BOERNERT PETER ,  DONEVA MARIYA IVANOVA ,  STEHNING CHRISTIAN

IPC: G01R33/561 ,  G01R33/565 ,  G01R33/567

Abstract: Ein Magnetresonanztomografieverfahren enthält das Erfassen von Magnetresonanzdaten-Datensätzen eines Objekts. Zumindest manche der Datensätze sind im k-Raum unterabgetastet. Jeder Datensatz bezieht sich auf einen Bewegungszustand des Objekts. Bilder jedes Datensatzes werden mittels einer Compressed-Sensing-Rekonstruktion rekonstruiert. Eine Bewegungskorrektur wird auf die rekonstruierten Bilder relativ zu einem ausgewählten Bewegungszustand angewandt, um bewegungskorrigierte Bilder zu erstellen. Ein diagnostisches Bild für den ausgewählten Bewegungszustand wird von den bewegungskorrigierten Bildern abgeleitet, z. B. durch Mittelung.

公开(公告)号：DE60210818T2

公开(公告)日：2006-11-30

申请号：DE60210818

申请日：2002-12-19

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： KATSCHER ULRICH ,  BOERNERT PETER

IPC: G01R33/48 ,  G01R33/561 ,  A61B5/055

Abstract: The invention relates to a parallel MR imaging method in which first a first MR imaging sequence is formed with a selectable minimum number of phase encoding steps and at least two separate MR signal data sets are acquired by means of at least two MR receiving coils. A first MR image is reconstructed from this data while taking into account the spatial sensitivity profiles of the MR receiving coils. In order to improve parallel MR imaging methods of this kind, the invention proposes to evaluate the quality of the reconstructed MR image in a subsequent step of the method and, in dependence upon the result of the evaluation, to either terminate the imaging method or to form a further MR imaging sequence with a number of further phase encoding steps. This procedure can be continued until an adequate MR image quality is reached.

公开(公告)号：DE10163815A1

公开(公告)日：2003-07-03

申请号：DE10163815

申请日：2001-12-22

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： KATSCHER ULRICH ,  BOERNERT PETER

IPC: G01R33/48 ,  A61B5/055 ,  G01R33/561 ,  G01R33/3415 ,  G06F5/00

Abstract: The invention relates to a parallel MR imaging method in which first a first MR imaging sequence is formed with a selectable minimum number of phase encoding steps and at least two separate MR signal data sets are acquired by means of at least two MR receiving coils. A first MR image is reconstructed from this data while taking into account the spatial sensitivity profiles of the MR receiving coils. In order to improve parallel MR imaging methods of this kind, the invention proposes to evaluate the quality of the reconstructed MR image in a subsequent step of the method and, in dependence upon the result of the evaluation, to either terminate the imaging method or to form a further MR imaging sequence with a number of further phase encoding steps. This procedure can be continued until an adequate MR image quality is reached.

公开(公告)号：WO2008132659A3

公开(公告)日：2009-01-08

申请号：PCT/IB2008051544

申请日：2008-04-22

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  EGGERS HOLGER ,  NEHRKE KAY ,  BOERNERT PETER

Inventor： EGGERS HOLGER ,  NEHRKE KAY ,  BOERNERT PETER

IPC: G01R33/561

CPC classification number: G01R33/4824 ,  G01R33/4826 ,  G01R33/4835 ,  G01R33/561 ,  G01R33/5615 ,  G01R33/5617 ,  G01R33/56509 ,  G01R33/5676

Abstract: The invention relates to a device for MRI of a body (7) placed in an examination volume. The device (1) comprises means (2) for establishing a substantially homogeneous main magnetic field in the examination volume, means (3, 4, 5) for generating switched magnetic field gradients superimposed upon the main magnetic field, means (6) for radiating RF pulses towards the body (7), control means (12) for controlling the generation of the magnetic field gradients and the RF pulses, means (10) for receiving and sampling MR signals, and reconstruction means (14) for forming MR images from the signal samples. According to one aspect of the invention, the device (1) is arranged to acquire a plurality of k-space blades according to the PROPELLER scheme, the k-space blades being rotated about a center of k-space, wherein the rotation angle of the k-space blades is incremented during MR signal acquisition by the Golden Angle (or by the half Golden Angle). According to another aspect of the invention, the device (1) is arranged to acquire an MR reference data set from a central portion of k-space prior to a multi-slice PROPELLER acquisition. According to still another aspect of the invention, the device (1) is arranged to weight the acquired MR data, wherein weighting factors are computed on the basis of acquisition times for contrast manipulation, correlation measures for motion compensation, and on the basis of the geometry of the overlapping areas of the k-space blades.

Abstract translation: 本发明涉及放置在检查体积中的身体（7）的MRI装置。 装置（1）包括用于在检查体积中建立基本均匀的主磁场的装置（2），用于产生叠加在主磁场上的开关磁场梯度的装置（3,4,5），用于辐射的装置（6） 朝向身体的射频脉冲（7），用于控制磁场梯度和RF脉冲的产生的控制装置（12），用于接收和采样MR信号的装置（10），以及用于形成MR图像的重建装置（14） 信号样本。 根据本发明的一个方面，装置（1）被布置为根据PROPELLER方案获取多个k空间叶片，k空间叶片围绕k空间的中心旋转，其中旋转角度 在MR信号采集期间，通过金角（或黄金角度），k空间叶片增加。 根据本发明的另一方面，设备（1）被布置成在多层螺旋桨获取之前从k空间的中心部分获取MR参考数据集。 根据本发明的另一方面，所述装置（1）被配置为对所获取的MR数据进行加权，其中基于对比度操作的获取时间，运动补偿的相关度量，以及基于 k空间叶片重叠区域的几何形状。

公开(公告)号：WO2007072420A3

公开(公告)日：2007-09-27

申请号：PCT/IB2006054946

申请日：2006-12-19

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  STEHNING CHRISTIAN ,  BOERNERT PETER

Inventor： STEHNING CHRISTIAN ,  BOERNERT PETER

IPC: A61B5/055 ,  G01R33/34

CPC classification number: A61B5/055 ,  A61B5/7207 ,  A61B5/721 ,  A61B5/7292 ,  G01R33/288 ,  G01R33/543 ,  G01R33/5613 ,  G01R33/56509 ,  G01R33/5673 ,  G01R33/5676

Abstract: The invention relates to a magnetic resonance (MR) system for acquiring MR data from a subject (105), the MR system comprising a monitoring module (117) for monitoring a characteristic of a motion of the subject, the characteristic of the motion having a pre-determined or dynamically adjusted limit (119), and a pulse sequencer (108) for applying a pulse sequence to acquire data from the subject (105) when the characteristic of the motion is within the limit (119), the pulse sequence comprising at least one pulse waveform, wherein the pulse sequencer (108) is further arranged to regulate a characteristic of the at least one pulse waveform when the characteristic of the motion surpasses the limit (119).

Abstract translation: 本发明涉及一种用于从对象（105）获取MR数据的磁共振（MR）系统，该MR系统包括用于监视被摄体的运动特征的监视模块（117），该运动的特征具有 预定或动态调整的限制（119），以及脉冲序列器（108），用于当运动的特性在极限（119）内时，施加脉冲序列以从对象（105）获取数据，所述脉冲序列包括 至少一个脉冲波形，其中所述脉冲定序器（108）进一步布置成当所述运动的特性超过极限（119）时调节所述至少一个脉搏波形的特性。