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：DE59712942D1

公开(公告)日：2008-07-10

申请号：DE59712942

申请日：1997-04-14

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： LEUSSLER CHRISTOPH

IPC: G01R33/34 ,  A61B5/055 ,  G01R33/341 ,  G01R33/36

Abstract: The device has a cylinder coil (7) and a surface coil (8) which overlap one another in an overlap zone (100), with adjustment of the overlap zone to obtain the optimum signal-to-noise ratio. The cylinder coil can be provided by at least birdcage resonator, a saddle coil, a solenoid coil, or a loop array device, the surface coil provided by a quadrature coil device, with the cylinder coil fitted around the patient's head and the surface coil covering the breast and neck.

公开(公告)号：DE10226511A1

公开(公告)日：2003-12-24

申请号：DE10226511

申请日：2002-06-14

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： LEUSSLER CHRISTOPH ,  SCHULZ VOLKMAR

IPC: G01R33/34 ,  A61B5/055 ,  G01R33/3415 ,  G01R33/561 ,  G01R33/32

Abstract: The invention relates to an open MR system in which the magnetic RF field is to be adjusted at will in respect of field profile. This is achieved in accordance with the invention by providing an RF coil system for the transmission and/or reception of RF signals, which RF coil system includes two RF coil arrays which are arranged on opposite sides of the examination zone, each RF coil array including at least two RF coils which are decoupled from one another and are connected to a respective channel of a transmit/receive unit. The invention also relates to a corresponding planar RF coil array.

公开(公告)号：DE10157039A1

公开(公告)日：2003-06-05

申请号：DE10157039

申请日：2001-11-21

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： LEUSSLER CHRISTOPH

IPC: G01R33/3415 ,  A61B5/055 ,  G01R33/341 ,  G01R33/36

Abstract: HF coil arrangement comprises a multiplicity of individual, essentially de-coupled HF coils (Sx) with different sizes and positions and a control unit with a number of transmitters each assigned to a single coil. The control unit can select one or more coils and apply an HF pulse with adjustable amplitude, phase or pulse shape. The invention also relates to a corresponding magnetic resonance imaging device.

公开(公告)号：DE59812918D1

公开(公告)日：2005-08-18

申请号：DE59812918

申请日：1998-01-20

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： LEUSSLER CHRISTOPH

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

公开(公告)号：WO2011036603A3

公开(公告)日：2011-05-26

申请号：PCT/IB2010054136

申请日：2010-09-14

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  LEUSSLER CHRISTOPH ,  WIRTZ DANIEL

Inventor： LEUSSLER CHRISTOPH ,  WIRTZ DANIEL

IPC: G01R33/343 ,  G01R33/345

CPC classification number: G01R33/345 ,  G01R33/341 ,  G01R33/343 ,  G01R33/4802

Abstract: The invention relates to a magnetic resonance imaging system (1) comprising: a main magnet for generating a uniform, steady magnetic field within an examination volume (21), an RF waveguide (19) for guiding travelling RF waves along an axis of the examination volume (21) in at least one travelling mode of the RF waveguide (19), at least one RF antenna (9) for transmitting RF pulses to and/or receiving MR signals from a body (10) of a patient positioned in the examination volume (21), wherein the RF antenna (9) is configured to couple to the at least one travelling mode of the RF waveguide (19), and wherein the RF antenna (9) is located on the imaging system such that the examination volume (21) is freely accessible, a control unit (15) for controlling the temporal succession of RF pulses, and a reconstruction unit (17) for reconstructing an MR image from the received MR signals. Further, the invention relates to an RF antenna (9) for an MR imaging system (1), wherein the RF antenna (9) is formed by an electrically conductive plate (22) comprising at least one recess (23).

Abstract translation: 本发明涉及一种磁共振成像系统（1），包括：用于在检查体积（21）内产生均匀的稳定磁场的主磁体，用于沿检查轴引导行波RF波的RF波导（19） 在RF波导（19）的至少一个行进模式中的体积（21），用于将RF脉冲发送到和/或接收来自位于检查中的患者的身体（10）的MR信号的至少一个RF天线（9） （21），其中所述RF天线（9）被配置为耦合到所述RF波导（19）的所述至少一个行进模式，并且其中所述RF天线（9）位于所述成像系统上，使得所述检查体积 （21）可自由访问，用于控制RF脉冲的时间连续的控制单元（15），以及用于从所接收的MR信号重建MR图像的重建单元（17）。 此外，本发明涉及一种用于MR成像系统（1）的RF天线（9），其中RF天线（9）由包括至少一个凹部（23）的导电板（22）形成。

公开(公告)号：WO2006117714A3

公开(公告)日：2007-06-21

申请号：PCT/IB2006051265

申请日：2006-04-24

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  GRAESSLIN INGMAR ,  VERNICKEL PETER ,  LEUSSLER CHRISTOPH

Inventor： GRAESSLIN INGMAR ,  VERNICKEL PETER ,  LEUSSLER CHRISTOPH

IPC: G01R33/36

CPC classification number: G01R33/3607 ,  G01R33/288 ,  G01R33/5612 ,  G01R33/5659

Abstract: Methods and circuit arrangements for operating a multi-channel transmit / receive antenna device or arrangement, especially for use in a magnetic resonance imaging (MRI) system, are disclosed by which RF amplifiers can be used to their full peak power capability without running the risk that the RF amplifier is damaged due to excessive reflected power at its output. Furthermore by evaluating certain forward and reflected power signals patient safety is achieved with respect to monitoring the limits of the specific absorption rate.

Abstract translation: 公开了用于操作多通道发射/接收天线装置或装置的方法和电路装置，特别是用于磁共振成像（MRI）系统中的哪些RF放大器可以被用于其全峰功率能力而不运行风险 RF放大器由于其输出处的反射功率过大而损坏。 此外，通过评估某些正向和反射功率信号，在监测比吸收率的限制方面实现了患者的安全性。

公开(公告)号：WO2009144639A2

公开(公告)日：2009-12-03

申请号：PCT/IB2009052123

申请日：2009-05-20

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  LEUSSLER CHRISTOPH ,  MAZURKEWITZ PETER M

Inventor： LEUSSLER CHRISTOPH ,  MAZURKEWITZ PETER M

IPC: G01R33/28

CPC classification number: G01R33/283 ,  G01R33/4808

Abstract: A nuclear magnetic resonance radio frequency (RF) coil arrangement (200) configured for receiving magnetic resonance RF signals from within the volume circumscribed by the RF coil arrangement, wherein the RF coil arrangement (200) further comprises at set of optical couplers (150), wherein the optical couplers (150) are adapted for receiving optical signals from the volume circumscribed by the RF coil arrangement. 5

Abstract translation: 一种核磁共振射频（RF）线圈装置（200），被配置为从由RF线圈装置包围的体内接收磁共振RF信号，其中RF线圈装置（200）还包括一组光耦合器（150） ，其中所述光耦合器（150）适于从由所述RF线圈装置包围的体积接收光信号。 五

公开(公告)号：WO2006137026A3

公开(公告)日：2007-03-29

申请号：PCT/IB2006052003

申请日：2006-06-21

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  HARVEY PAUL R ,  GRAESSLIN INGMAR ,  LEUSSLER CHRISTOPH

Inventor： HARVEY PAUL R ,  GRAESSLIN INGMAR ,  LEUSSLER CHRISTOPH

IPC: G01R33/36 ,  G01R33/3415

CPC classification number: G01R33/3415 ,  G01R33/3635

Abstract: The invention relates to an MR device (1) for magnetic resonance imaging of a body (14) placed in an examination volume (7), the device (1) comprising a main magnet (2) for generating a stationary and substantially homogeneous main magnetic field in the examination volume (7), and an RF coil arrangement for generating RF fields in the examination volume (7) and/or for receiving MR signals from the body (14). In order to provide such an MR device, which is arranged to operate at the resonance (Larmor) frequencies of two or more different nuclear species at the same time, the invention suggests that the RF coil arrangement comprises a plurality of independent resonator elements (8, 9, 10, 11, 12, 13) which are adjacently arranged in or near the examination volume (7), wherein adjacent resonator elements (8, 9, 10, 11, 12, 13) are alternately tuned to one of two or more different MR resonance frequencies, and wherein each resonator element (8, 9, 10, 11, 12, 13) is associated with a separate signal transmission (16) and/or signal reception channel (17) of the MR device (1)

Abstract translation: 本发明涉及用于放置在检查体积（7）中的体（14）的磁共振成像的MR装置（1），所述装置（1）包括主磁体（2），用于产生静止且基本均匀的主磁 在检查体积（7）中的场和用于在检查体积（7）中产生RF场和/或用于从身体（14）接收MR信号的RF线圈装置。 为了提供这样的MR器件，其被布置为在同时在两个或更多个不同核物种的共振（Larmor）频率下操作，本发明提出RF线圈装置包括多个独立的谐振元件（8 ，9,10,11,12,13），其相邻地布置在检查体积（7）中或附近，其中相邻的谐振器元件（8,9,10,11,12,13）交替地被调谐到两个或 更多不同的MR共振频率，并且其中每个谐振器元件（8,9,10,11,12,13）与MR装置（1）的单独的信号传输（16）和/或信号接收通道（17）相关联，

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。