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1.发明公开
公开(公告)号：EP2291672A2
公开(公告)日：2011-03-09
申请号：EP09766264.7
申请日：2009-06-15
发明人： WAFFENSCHMIDT, Eberhard , HILGERS, Achim , DE VRIES, Lambertus , WEISSLER, Bjoern , REEFMAN, Derk , VAN HELVOORT, Marinus, J., A., M. , BLANKEN, Pieter, G.
IPC分类号： G01R33/36
摘要： The invention relates to a nuclear magnetic resonance imaging apparatus comprising: a main magnet (122) adapted for generating a main magnetic field; at least one radio frequency receiver coil unit (144) for acquiring magnetic resonance signals in a receiver coil radio frequency band (202) from an examined object (124); means (140) for inductively (wirelessly) supplying electric power to an electric component of the apparatus, wherein the electric component is adapted to be powered by inductively supplied electric power, wherein the power transfer frequency (200) and the higher-harmonics (206) of the power transfer frequency (200) for inductively supplying the electric power are located outside the receiver coil radio frequency band (202).
摘要翻译： 本发明涉及一种核磁共振成像装置，包括：适于产生主磁场的主磁体（122）; 至少一个射频接收器线圈单元（144），用于从被检查物体（124）获取接收器线圈无线电频带（202）中的磁共振信号; 用于感应地（无线地）向所述设备的电气部件供电的装置（140），其中所述电气部件适于由感应供应的电力供电，其中所述功率传递频率（200）和所述高次谐波（206 ）用于感应供电的功率传递频率（200）位于接收线圈无线电频带（202）的外侧。
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公开(公告)号：EP2446517A1
公开(公告)日：2012-05-02
申请号：EP10730551.8
申请日：2010-06-21
发明人： VAN VLIET, Johannes, A. , KLEIHORST, Robert, P. , WAGNER, Bernhard , VAN HELVOORT, Marinus, J., A., M. , LEYMANN, Peter-Christian, E., H., H.-J. , OSTENDORF, Arno
CPC分类号： H02J3/14 , Y02B70/3225 , Y02P80/11 , Y04S20/222
摘要： The invention relates to an electrical power distribution apparatus (100) connectible to one or more loads (119). The electrical power distribution apparatus (100) comprises inter alia one or more taps (112) for supplying the loads (119) with electrical power. On top of circuit breakers (108) to switch off the power supply in order to protect the loads against damage, there is also arranged a second layer of soft fuse switches (110) which are arranged to switch on or off the power supply at the taps (112) to control distribution of the power. The soft fuses (110) operate in dependence on and in response to commands issued from a controller (105) which in turn operates and issues those commands in response to and independence on the voltages and amperages monitored at those taps (112) by way of a monitoring module (111). Switching on/off occurs at amperage and voltages lower than the critical threshold values to which the circuit breakers (108) respond to.
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公开(公告)号：EP2446517B1
公开(公告)日：2020-01-22
申请号：EP10730551.8
申请日：2010-06-21
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公开(公告)号：EP2291672B1
公开(公告)日：2020-04-15
申请号：EP09766264.7
申请日：2009-06-15
发明人： WAFFENSCHMIDT, Eberhard , HILGERS, Achim , DE VRIES, Lambertus , WEISSLER, Bjoern , REEFMAN, Derk , VAN HELVOORT, Marinus, J., A., M. , BLANKEN, Pieter, G.
IPC分类号： G01R33/36
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公开(公告)号：EP1831710B1
公开(公告)日：2012-03-28
申请号：EP05850076.0
申请日：2005-12-14
发明人： VAN HELVOORT, Marinus, J., A., M. , GROEN, Johannes, P. , KLEIHORST, Robert, P. , HAM, Cornelis, L., G.
IPC分类号： G01R33/36 , G01R33/3415
CPC分类号： G01R33/3692 , G01R33/3415 , G01R33/3621
摘要： The invention relates to a device (1) for magnetic resonance imaging of a body (7), comprising a main magnet (2) for generation of a stationary and substantially homogeneous main magnetic field within the examination zone, a plurality of wireless receiving units (10a, 10b) placed in or near the examination zone, and sampling means (21a, 21b) operating at a variable sampling frequency for sampling the received MR signals and for converting them into digital signal samples. In order to provide an MR device (1), which is arranged to inductively energize the wireless receiving units (10a, 10b) without interference with the nuclear spin system of the examined object (7) and which does not necessarily require bulky energy storage means for the operation of the wireless receiving units (10a, 10b), the invention proposes to make provision for energizing means (17) generating an RF energizing field within the examination zone for inductively supplying electric power to the wireless receiving units (10a, 10b), wherein the frequency of the RF energizing field is an integer multiple of the sampling frequency.
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6.发明公开SYSTEM OF ELECTRIC COILS FOR TRANSMITTING AND RECEIVING RADIO-FREQUENCY MAGNETIC FIELDS IN A MAGNETIC-RESONANCE IMAGING APPARATUS, AND MAGNETIC-RESONANCE IMAGING APPARATUS PROVIDED WITH SUCH A SYSTEM OF ELECTRIC COILS 审中-公开系统构建电气REEL对于这样的系统电REELS EQUIPPED磁成像装置在磁场图像和设备发送和接收高频率磁场
公开(公告)号：EP1774355A1
公开(公告)日：2007-04-18
申请号：EP05760041.3
申请日：2005-07-12
发明人： POSSANZINI, Cecilia , VAN HELVOORT, Marinus, J., A., M. , WARNTJES, Jan, B., M. , KLEIHORST, Robert, P.
IPC分类号： G01R33/341
CPC分类号： G01R33/341
摘要： The invention relates to a magnetic-resonance imaging (MRI) apparatus comprising an electric coil system (17) for transmitting and receiving a radio-frequency (RF) magnetic field from an examination volume (3) of the MRI apparatus. The electric coil system (17) comprises at least one surface coil (35) which extends substantially in a plane. The surface coil is used for transmitting and/or receiving a RF magnetic field which is oriented substantially perpendicularly to the plane of the surface coil (35). The surface coil (35) has a main coil axis (37). When the MRI apparatus is in use, the main coil axis (37) extends substantially parallel to a main magnetic field in the examination volume (3) of the MRI apparatus. On both sides of the main coil axis (37), the surface coil (35) comprises an electrically conducting element (39) which extends substantially parallel to the main coil axis (37). To provide a surface coil (35) which transmits more homogeneous RF magnetic fields and/or has a more homogeneous sensitivity for received RF magnetic fields than known surface coils, at least one of the electrically conducting elements (39) of the surface coil (35) comprises at least two electric conductors (41). With respect to their distance to the main coil axis (37), these electric conductors (41) are positioned at a relatively short distance from each other. In the plane of the surface coil (35), the electric conductors (41) extend substantially parallel to the main coil axis (37) of the surface coil (35).
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公开(公告)号：EP1430324B1
公开(公告)日：2010-05-26
申请号：EP02798786.6
申请日：2002-09-03
IPC分类号： G01R33/36
CPC分类号： G01R33/3685 , H04B15/00
摘要： The invention relates to a resonance trap (8) for suppressing electromagnetic coupling phenomena for a line (1), which resonance trap includes a conductor (10) which extends parallel to and along a part of the length of the line (1). Conventional resonance traps (8) have the drawback that a direct connection exists between the RF line and the individual resonance traps (8). It is an object of the invention to provide a resonance trap (8) which enables a modular assembly on the line (1). The object is achieved by means of a resonance trap (8) of the kind set forth in which inner conductors (10) extend parallel to the line (1) and in which outer conductors (11) extend parallel to the inner conductors (10), said inner conductors (10) being arranged at a radial distance from the line (1) which is smaller than that at which the outer conductors (11) are arranged and the outer conductors (11) being arranged to cover at least partly the inner conductors (10).in the radial direction relative to the line (1). This offers the advantage that the connection between the resonance trap (8) and the line (1) is dispensed with.
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公开(公告)号：EP1831710A2
公开(公告)日：2007-09-12
申请号：EP05850076.0
申请日：2005-12-14
发明人： VAN HELVOORT, Marinus, J., A., M. , GROEN, Johannes, P. , KLEIHORST, Robert, P. , HAM, Cornelis, L., G.
IPC分类号： G01R33/36 , G01R33/3415
CPC分类号： G01R33/3692 , G01R33/3415 , G01R33/3621
摘要： The invention relates to a device (1) for magnetic resonance imaging of a body (7), comprising a main magnet (2) for generation of a stationary and substantially homogeneous main magnetic field within the examination zone, a plurality of wireless receiving units (10a, 10b) placed in or near the examination zone, and sampling means (21a, 21b) operating at a variable sampling frequency for sampling the received MR signals and for converting them into digital signal samples. In order to provide an MR device (1), which is arranged to inductively energize the wireless receiving units (10a, 10b) without interference with the nuclear spin system of the examined object (7) and which does not necessarily require bulky energy storage means for the operation of the wireless receiving units (10a, 10b), the invention proposes to make provision for energizing means (17) generating an RF energizing field within the examination zone for inductively supplying electric power to the wireless receiving units (10a, 10b), wherein the frequency of the RF energizing field is an integer multiple of the sampling frequency.
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9.发明授权
公开(公告)号：EP1883348B1
公开(公告)日：2010-03-31
申请号：EP06727857.2
申请日：2006-04-07
CPC分类号： G01R33/3692 , G01R33/341 , H01Q1/22 , H01Q7/00 , H01Q9/30 , H01Q23/00
摘要： An RF receiver antenna (1), notably for use in an magnetic resonance imaging system for picking up magnetic resonance signals comprises a resonant pick-up circuit and communication unit (2) to transmit and/or receive data and including a transmit/receive antenna integrated in the resonant pick-up circuit.
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10.发明授权METHOD FOR OBTAINING MRI IMAGES USING SUB-SAMPLING IN A VERTICAL FIELD MRI APPARATUS 有权方法计算磁共振图像通过在扫描与垂直板的MRI设备
公开(公告)号：EP1256011B1
公开(公告)日：2007-03-21
申请号：EP01997706.5
申请日：2001-11-19
IPC分类号： G01R33/3415
CPC分类号： G01R33/3415 , G01R33/5611
摘要： The invention relates to a method for obtaining MRI images in a vertical main field while using a sub-sampling scheme like SENSE. The invention proposes a number of coil arrangements such that the advantages of SENSE (high speed acquisition) and vertical field (open view for the patient so as to avoid sensations of fear and claustrophobia) are combined. The coil arrangements preferably include butterfly coils and are arranged in such a way that they offer access to the patient and also allow the patient to be moved into and out of the imaging volume without interference by the RF coils.
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