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：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：DE60311249T2

公开(公告)日：2007-10-18

申请号：DE60311249

申请日：2003-03-24

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： KATSCHER ULRICH ,  KOEHLER THOMAS ,  SCHMIDT THOMAS

IPC: G01T1/161 ,  G06T11/00 ,  A61B5/055 ,  A61B6/03 ,  G06T3/00

Abstract: A method for selective imaging of body structures includes acquiring first image data set by a first tomography method, acquiring a second image data set by a second tomography method which has a resolution which is higher than that of the first method, the image data of the first and the second image data set coinciding at least partly in space, reconstructing an image from the first image data set, and selecting the image data to be reconstructed from the first image data set using the second image data set. In order to achieve a higher imaging quality while using a low-resolution tomography method, image reconstruction of the image data selected from the first image data set at least one image region to be imaged is selected from the second image data set, and subsequently the image reconstruction is calculated from the image data of the first image data set which are situated in the selected image region.

公开(公告)号：DE60311249D1

公开(公告)日：2007-03-08

申请号：DE60311249

申请日：2003-03-24

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： KATSCHER ULRICH ,  KOEHLER THOMAS ,  SCHMIDT THOMAS

IPC: G01T1/161 ,  G06T11/00 ,  A61B5/055 ,  A61B6/03 ,  G06T3/00

Abstract: A method for selective imaging of body structures includes acquiring first image data set by a first tomography method, acquiring a second image data set by a second tomography method which has a resolution which is higher than that of the first method, the image data of the first and the second image data set coinciding at least partly in space, reconstructing an image from the first image data set, and selecting the image data to be reconstructed from the first image data set using the second image data set. In order to achieve a higher imaging quality while using a low-resolution tomography method, image reconstruction of the image data selected from the first image data set at least one image region to be imaged is selected from the second image data set, and subsequently the image reconstruction is calculated from the image data of the first image data set which are situated in the selected image region.

公开(公告)号：DE10214254A1

公开(公告)日：2003-10-16

申请号：DE10214254

申请日：2002-03-30

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： KATSCHER ULRICH ,  KOEHLER THOMAS ,  SCHMIDT THOMAS

IPC: G01T1/161 ,  A61B5/055 ,  A61B6/03 ,  G06T3/00 ,  G06T11/00 ,  G06T5/50

Abstract: A method for selective imaging of body structures includes acquiring first image data set by a first tomography method, acquiring a second image data set by a second tomography method which has a resolution which is higher than that of the first method, the image data of the first and the second image data set coinciding at least partly in space, reconstructing an image from the first image data set, and selecting the image data to be reconstructed from the first image data set using the second image data set. In order to achieve a higher imaging quality while using a low-resolution tomography method, image reconstruction of the image data selected from the first image data set at least one image region to be imaged is selected from the second image data set, and subsequently the image reconstruction is calculated from the image data of the first image data set which are situated in the selected image region.

公开(公告)号：AU2003209950A1

公开(公告)日：2003-10-13

申请号：AU2003209950

申请日：2003-03-24

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： KOHLER THOMAS ,  SCHMIDT THOMAS ,  KATSCHER ULRICH

IPC: G01T1/161 ,  A61B5/055 ,  A61B6/03 ,  G06T3/00 ,  G06T11/00

Abstract: A method for selective imaging of body structures includes acquiring first image data set by a first tomography method, acquiring a second image data set by a second tomography method which has a resolution which is higher than that of the first method, the image data of the first and the second image data set coinciding at least partly in space, reconstructing an image from the first image data set, and selecting the image data to be reconstructed from the first image data set using the second image data set. In order to achieve a higher imaging quality while using a low-resolution tomography method, image reconstruction of the image data selected from the first image data set at least one image region to be imaged is selected from the second image data set, and subsequently the image reconstruction is calculated from the image data of the first image data set which are situated in the selected image region.

公开(公告)号：WO2011039692A3

公开(公告)日：2011-11-10

申请号：PCT/IB2010054339

申请日：2010-09-27

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  FUDERER MIHA ,  ROZIJN THOMAS HENDRIK ,  KATSCHER ULRICH ,  NEHRKE KAY ,  HARVEY PAUL ROYSTON

Inventor： FUDERER MIHA ,  ROZIJN THOMAS HENDRIK ,  KATSCHER ULRICH ,  NEHRKE KAY ,  HARVEY PAUL ROYSTON

IPC: G01R33/561

CPC classification number: G01R33/5612 ,  G01R33/246 ,  G01R33/5659

Abstract: The invention relates to a magnetic resonance imaging apparatus comprising an array of two or more RF antennas(9) for transmitting RF pulses to and receiving MR signals from a body(7) of a patient positioned in an examination volume (2), the RF antennas (9) having spatial transmit and receive sensitivity profiles. The apparatus is arranged to: -control the temporal succession, the phase, and the amplitude of the RF feeding of each individual RF antenna (9), the phases and amplitudes being determined from the spatial transmit sensitivity profiles of the RF antennas(9), and -reconstruct a MR image from a combination of the received MR signals received via the individual RF antennas(9) and from the spatial receive sensitivity profiles of the RF antennas(9). The invention proposes that the apparatus is further arranged to: -determine the spatial transmit sensitivity profiles of the RF antennas (9) from the spatial receive sensitivity profiles of the RF antennas (9), or -determine the spatial receive sensitivity profiles of the RF antennas (9) from the spatial transmit sensitivity profiles of the RF antennas (9).

Abstract translation: 本发明涉及一种磁共振成像设备，其包括用于向位于检查体积（2）中的患者的身体（7）发送RF脉冲并从其接收MR信号的两个或更多个RF天线（9）的阵列，RF 天线（9）具有空间发射和接收灵敏度分布。 该装置被设置为： - 控制每个单独RF天线（9）的RF馈送的时间序列，相位和幅度，根据RF天线（9）的空间发射灵敏度分布确定相位和幅度， ，并且从经由各个RF天线（9）接收的接收的MR信号和RF天线（9）的空间接收灵敏度分布的组合重构MR图像。 本发明提出，该装置进一步被布置成： - 根据RF天线（9）的空间接收灵敏度分布来确定RF天线（9）的空间发射灵敏度分布，或者确定RF的空间接收灵敏度分布 天线（9）从RF天线（9）的空间发射灵敏度分布图。

公开(公告)号：WO2010018504A3

公开(公告)日：2010-06-10

申请号：PCT/IB2009053453

申请日：2009-08-07

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  VERNICKEL PETER ,  MAZURKEWITZ PETER ,  WIRTZ DANIEL ,  LEUSSLER CHRISTOPH ,  KATSCHER ULRICH ,  PHILIPS INTELLECTUAL PROPERTY

Inventor： VERNICKEL PETER ,  MAZURKEWITZ PETER ,  WIRTZ DANIEL ,  LEUSSLER CHRISTOPH ,  KATSCHER ULRICH

IPC: A61B5/05 ,  G01V3/10

CPC classification number: A61B5/0536 ,  A61B5/0522

Abstract: A method and a monitoring device for performing an RF-safe MIT scan is disclosed in which it is prevented that an RF exposure, especially a specific absorption rate (SAR), imposed on an examination object, especially a patient, exceeds certain limit values during a magnetic induction tomography (MIT) scan. This is achieved on the one hand by an RF simulation method for simulating intended MIT operating parameters and calculating a resulting RF exposure of the object, and on the other hand by a monitoring device for monitoring the RF power which is applied to the object.

Abstract translation: 公开了一种用于执行RF安全MIT扫描的方法和监视设备，其中防止施加在检查对象，特别是患者上的RF暴露量，特别是特定吸收率（SAR）在期间超过特定极限值 磁感应断层扫描（MIT）扫描。 这一方面通过用于模拟预期MIT操作参数并计算物体的最终RF暴露的RF模拟方法来实现，另一方面通过用于监测施加到物体的RF功率的监测装置来实现。

公开(公告)号：WO2007017779A3

公开(公告)日：2007-10-11

申请号：PCT/IB2006052501

申请日：2006-07-21

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  KATSCHER ULRICH ,  FINDEKLEE CHRISTIAN ,  VERNICKEL PETER

Inventor： KATSCHER ULRICH ,  FINDEKLEE CHRISTIAN ,  VERNICKEL PETER

IPC: A61B5/053

CPC classification number: A61B5/0536 ,  A61B5/055 ,  A61B5/7239

Abstract: An electric impedance imaging system is presented in which the electrical permittivity and/or conductivity distribution is derived on the basis of magnetic resonance signals. The magnetic resonance signals are generated due to an excitation electro-magnetic field. Notably, a magnetic induction field strength is derived from the acquired magnetic resonance signals. Also the electrical field strength associated with the excitation electro-magnetic field is computed. The electrical permittivity and/or conductivity distribution is computed on the basis of the electric field strength and the magnetic induction field strength.

Abstract translation: 提出了一种电阻抗成像系统，其中基于磁共振信号导出介电常数和/或电导率分布。 由于激励电磁场而产生磁共振信号。 值得注意的是，从获取的磁共振信号导出磁感应场强。 此外，计算与激励电磁场相关联的电场强度。 基于电场强度和磁感应场强计算电介电常数和/或电导率分布。