专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2010023586A3 RF ANTENNA ARRANGEMENTS FOR A MIT APPARATUS 审中-公开
标题翻译：射频天线安装麻省理工学院设备
公开(公告)号：WO2010023586A3
公开(公告)日：2010-06-10
申请号：PCT/IB2009053589
申请日：2009-08-14
申请人： KONINKL PHILIPS ELECTRONICS NV , VERNICKEL PETER , MAZURKEWITZ PETER , LEUSSLER CHRISTOPH , FINDEKLEE CHRISTIAN , WIRTZ DANIEL , KATSCHER ULRICH , PHILIPS INTELLECTUAL PROPERTY
发明人： VERNICKEL PETER , MAZURKEWITZ PETER , LEUSSLER CHRISTOPH , FINDEKLEE CHRISTIAN , WIRTZ DANIEL , KATSCHER ULRICH
IPC分类号： H01Q19/10 , A61B5/05 , H01Q21/28
CPC分类号： H01Q21/28 , A61B5/0522 , A61B5/0536 , H01Q19/104
摘要： Several RF antenna arrangements are disclosed, particularly for use as RF transmitter and/or receiver antenna arrangements in a MIT apparatus, with which an increased signal-to-noise ratio, an improved MIT imaging performance, an increased spatial and temporal resolution of the generated images, a reduced acquisition time and greater measurement reliability can be obtained.
摘要翻译：公开了几种RF天线装置，特别是用作MIT装置中的RF发射器和/或接收器天线装置，利用该RF天线装置增加了信噪比，提高了MIT成像性能，增加了所生成的空间和时间分辨率图像，可以获得缩短的采集时间和更高的测量可靠性。

2. 发明申请

WO2010018504A3 METHOD AND MONITORING DEVICE FOR PERFORMING AN RF-SAFE MIT SCAN 审中-公开
标题翻译：用于执行RF-SAFE MIT扫描的方法和监视设备
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
申请人： KONINKL PHILIPS ELECTRONICS NV , VERNICKEL PETER , MAZURKEWITZ PETER , WIRTZ DANIEL , LEUSSLER CHRISTOPH , KATSCHER ULRICH , PHILIPS INTELLECTUAL PROPERTY
发明人： VERNICKEL PETER , MAZURKEWITZ PETER , WIRTZ DANIEL , LEUSSLER CHRISTOPH , KATSCHER ULRICH
IPC分类号： A61B5/05 , G01V3/10
CPC分类号： A61B5/0536 , A61B5/0522
摘要： 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.
摘要翻译：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。

3. 发明申请

WO2006067727A3 MAGNETIC RESONANCE IMAGING SYSTEM AND METHOD 审中-公开
标题翻译：磁共振成像系统和方法
公开(公告)号：WO2006067727A3
公开(公告)日：2006-10-05
申请号：PCT/IB2005054312
申请日：2005-12-19
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , KATSCHER ULRICH , FINDEKLEE CHRISTIAN , VERNICKEL PETER , LEUSSLER CHRISTOPH
发明人： KATSCHER ULRICH , FINDEKLEE CHRISTIAN , VERNICKEL PETER , LEUSSLER CHRISTOPH
IPC分类号： G01R33/36
CPC分类号： G01R33/3607 , G01R33/5611
摘要： The present invention relates to a magnetic resonance imaging system (1) comprising a plurality of RF coils (4) forming a multi-coil array and furthermore to a magnetic resonance imaging method for such a system. In order to provide an MR imaging system and method in which a desired excitation pattern is achieved in a simple way, it is suggested to utilize an analytical procedure how to combine the single coil elements to obtain the most homogeneous Bl excitation possible with a given coil array. In other words, the homogeneity of the Bl field is improved in a very simple way. The sensitivity of each RF coil (4) of the coil array is scaled or weighted by a complex factor, i.e. phase and amplitude of each coil drive signal is adjusted accordingly. These complex factors are determined analytically utilizing the sensitivities S (8) of the coil elements (4) and the desired excitation pattern P (IO, 11). The invention allows an optimized control of the field distribution (RF shimming) for arbitrary RF coil arrays. With the invention a fast and easy independent phase and amplitude control of the coil elements (4) is provided for reducing body- induced RF non- uniformities, which appear in high field MR systems.
摘要翻译：本发明涉及一种磁共振成像系统（1），其包括形成多线圈阵列的多个RF线圈（4），并且还涉及用于这种系统的磁共振成像方法。为了提供其中以简单的方式实现期望的激励模式的MR成像系统和方法，建议利用分析过程如何组合单个线圈元件以获得可能具有给定线圈的最均匀的B1激励阵列。换句话说，B1场的同质性以非常简单的方式得到改善。线圈阵列的每个RF线圈（4）的灵敏度由一个复数因子缩放或加权，即相应地调整每个线圈驱动信号的相位和幅度。利用线圈元件（4）的灵敏度S（8）和期望的激励模式P（IO，11）来分析确定这些复杂因素。本发明允许对任意RF线圈阵列的场分布（RF匀场）进行优化控制。通过本发明，线圈元件（4）的快速且容易的独立相位和振幅控制被提供用于减少出现在高场MR系统中的身体诱发的RF不均匀性。

4. 发明申请

WO2007017779A3 ELECTRIC IMPEDANCE IMAGING SYSTEM 审中-公开
标题翻译：电阻成像系统
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
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , KATSCHER ULRICH , FINDEKLEE CHRISTIAN , VERNICKEL PETER
发明人： KATSCHER ULRICH , FINDEKLEE CHRISTIAN , VERNICKEL PETER
IPC分类号： A61B5/053
CPC分类号： A61B5/0536 , A61B5/055 , A61B5/7239
摘要： 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.
摘要翻译：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。

5. 发明申请

WO2006117714A3 METHOD AND CIRCUIT ARRANGEMENT FOR OPERATING MULTI-CHANNEL TRANSMIT/RECEIVE ANTENNA DEVICES 审中-公开
标题翻译：用于操作多通道发射/接收天线设备的方法和电路布置
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
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , GRAESSLIN INGMAR , VERNICKEL PETER , LEUSSLER CHRISTOPH
发明人： GRAESSLIN INGMAR , VERNICKEL PETER , LEUSSLER CHRISTOPH
IPC分类号： G01R33/36
CPC分类号： G01R33/3607 , G01R33/288 , G01R33/5612 , G01R33/5659
摘要： 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.
摘要翻译：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。

6. 发明申请

WO2006120589A3 METHOD AND CIRCUIT ARRANGEMENT FOR POWER MONITORING IN MULTI-CHANNEL TRANSMIT/RECEIVE ANTENNA DEVICES 审中-公开
标题翻译：用于多通道发射/接收天线装置中的功率监测的方法和电路装置
公开(公告)号：WO2006120589A3
公开(公告)日：2007-03-01
申请号：PCT/IB2006051311
申请日：2006-04-27
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , GRAESSLIN INGMAR , VERNICKEL PETER , LEUSSLER CHRISTOPH
发明人： GRAESSLIN INGMAR , VERNICKEL PETER , LEUSSLER CHRISTOPH
IPC分类号： H04B7/005
CPC分类号： G01R33/5612 , G01R33/288 , G01R33/3415 , G01R33/3607 , H04B17/23 , H04W52/34 , H04W52/367
摘要： Methods and circuit arrangements for operating a multi-channel transmit / receive antenna device or arrangement, comprising a power monitoring unit, especially for use in a magnetic resonance imaging (MRI) system are disclosed. These methods and circuit arrangements are especially provided for ensuring that a specific absorption rate of a patient is not exceeded in the case in which antenna devices or arrangements are used which comprise a plurality of coils and / or coil segments which are independently supplied with RF transmit signals with different amplitudes and / or phases and / or waveforms and / or power levels. A maximum power level is set for at least one of the transmit channels. An alarm state is activated if the supplied power level or the reflected power for that channel exceeds the maximum power level . A maximum sum power level is set for a plurality of transmit channels. An alarm state is activated if the supplied sum power level or the reflected sum power level for the plurality of transmit channels exceeds the maximum sum powr level.
摘要翻译：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，其包括特别用于磁共振成像（MRI）系统的功率监测单元。特别提供了这些方法和电路装置，用于确保在使用天线装置或布置的情况下不超过患者的比吸收率，所述天线装置或布置包括多个线圈和/或线圈段，这些线圈和/或线圈段独立地提供有RF发射具有不同幅度和/或相位和/或波形和/或功率电平的信号。为至少一个发送信道设置最大功率电平。如果提供的功率电平或该通道的反射功率超过最大功率电平，则激活报警状态。为多个发送信道设置最大和功率电平。如果提供的总功率电平或多个发射信道的反射和功率电平超过最大和功率电平，则激活报警状态。

7. 发明申请

WO2006067703A3 TRANSMISSION PATH FOR USE IN RF FIELDS 审中-公开
标题翻译：用于射频场的传输路径
公开(公告)号：WO2006067703A3
公开(公告)日：2006-09-21
申请号：PCT/IB2005054267
申请日：2005-12-15
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , GLEICH BERNHARD , VERNICKEL PETER , WEISS STEFFEN , LUEDEKE KAI-MICHAEL
发明人： GLEICH BERNHARD , VERNICKEL PETER , WEISS STEFFEN , LUEDEKE KAI-MICHAEL
IPC分类号： G01R33/36
CPC分类号： G01R33/287 , G01R33/3642 , G01R33/3685
摘要： A transmission path (13) for transmitting high frequency (RF) signals is disclosed, which comprises a plurality of lead segments (20, 21, 22) which are coupled to one another on one end by a capacitive coupling element (30) and on the other end by an inductive coupling element (31) and which each have an effective length of approximately ? i /4, wherein ? i is the wavelength of a differential mode signal to be transmitted over the path (13). By providing these element (30, 31) in the form of distributed elements which electrically extend over at least a part of adjacent lead segments (20, 21; 21, 22) a very thin transmission path (13) can be realized, which is especially suitable for use with invasive catheters. Furthermore, this path (13) can be guided through RF fields of a magnetic resonance (MR) imaging system because common mode resonances are effectively suppressed.
摘要翻译：公开了一种用于传输高频（RF）信号的传输路径（13），其包括多个引线段（20,21,22），其在一端通过电容耦合元件（30）彼此耦合并且接通另一端由电感耦合元件（31）并且每一个具有大约π/Λ4的有效长度，其中Δλ是差模信号的波长通过路径（13）传送。通过将这些元件（30,31）设置成在相邻引线段（20,21; 21,22）的至少一部分上电延伸的分布元件的形式，可以实现非常薄的传输路径（13）特别适用于侵入性导管。此外，由于共模谐振被有效地抑制，所以该路径（13）可以被引导到磁共振（MR）成像系统的RF场。

8. 发明申请

WO2013054231A3 APPARATUS AND METHOD FOR MR EXAMINATION, AND TEMPERATURE CONTROL SYSTEM AND METHOD 审中-公开
标题翻译：用于MR检查的装置和方法以及温度控制系统和方法
公开(公告)号：WO2013054231A3
公开(公告)日：2013-06-13
申请号：PCT/IB2012055294
申请日：2012-10-03
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY
发明人： VAN DEN BRINK JOHAN SAMUEL , HARVEY PAUL ROYSTON , FORTHMANN PETER , LEUSSLER CHRISTOPH , VERNICKEL PETER , WUELBERN JAN HENDRIK , GRAESSLIN INGMAR
IPC分类号： G01R33/28 , A61B5/055 , G01R33/48
CPC分类号： G01R33/31 , A61B5/055 , A61B2090/3954 , A61F7/10 , A61F2007/0056 , A61F2007/0086 , G01R33/28 , G01R33/288 , G01R33/44 , G01R33/4804
摘要： The invention provides an apparatus(1) for magnetic resonance (MR) examination of a subject (S), comprising: an examination region (3) for accommodating the subject (S) during the MR examination; a radio-frequency system (5) for transmission of a radio-frequency (RF) signal or field into the examination region (3) during the MR examination; and a temperature control system (6) for controlling the temperature of the subject (S) in the examination region (3) during the examination. The temperature control system(6) is configured to actively control or regulate an environment of the subject (S), and thereby the temperature or thermal comformt of the subject (S) based upon a detected and/or an expected temperature of the subject (S) during the MR examination. The invention also provides a method of controlling thermal comfort of the subject (S) during an examination of the subject (S) in a MR apparatus(1), comprising the steps of: estimating and/or detecting a temperature of the subject (S) during the MR examination, and actively controlling or regulating the environment of the subject (S) based upon the estimated and/or detected temperature of the subject (S) during the MR examination.
摘要翻译：本发明提供了一种用于对象（S）的磁共振（MR）检查的设备（1），包括：在MR检查期间容纳对象（S）的检查区域（3）射频系统（5），用于在MR检查期间将射频（RF）信号或场传送到检查区域（3）中; 以及用于在检查期间控制检查区域（3）中的对象（S）的温度的温度控制系统（6）。温度控制系统（6）被配置为基于对象（S）的检测到的和/或预期的温度来主动地控制或调节对象（S）的环境，从而主动地控制对象（S）的温度或热共同 S）在MR检查期间。本发明还提供了一种在检查MR设备（1）中的对象（S）期间控制对象（S）的热舒适度的方法，包括以下步骤：估计和/或检测对象（S ），并且在MR检查期间基于对象（S）的估计和/或检测温度主动控制或调节对象（S）的环境。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式