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31. 发明申请

WO2019158495A1 MULTI-CHANNEL RF TRANSMIT SYSTEM 审中-公开
公开(公告)号：WO2019158495A1
公开(公告)日：2019-08-22
申请号：PCT/EP2019/053366
申请日：2019-02-12
申请人： KONINKLIJKE PHILIPS N.V.
发明人： VERNICKEL, Peter , LEUSSLER, Christoph
IPC分类号： H03F3/68 , H03F1/02 , G01R33/36 , H03F3/189 , H03F3/24
摘要： A multi-channel RF transmit system (1) especially for use in a magnetic resonance examination system comprising, a plurality of RF channels (18, 19) wherein each of the RF channels (18, 19) has an RF amplifier. The multi-channel RF transmit system (1) further comprises a power supply device (2) configured to supply power to the amplifiers (4, 5), a first capacitor bank (6), wherein the first capacitor bank (6) is connected to the power supply device (2) and connected to a first RF amplifier (4), a second capacitor bank (7), wherein the second capacitor bank (7) is connected to the power supply device (2) and connected to a second RF amplifier (5) and a third capacitor bank (8) also connected to the power supply device (2). The third capacitor bank (8) is connected to a DC switch (9), wherein the DC switch (9) is configured to switch the power supplied by the third capacitor bank (8) to the first amplifier (4) or the second amplifier (5). Therefore, a multi-channel RF transmit system (1) is disclosed where parts of the total available capabilities of discrete stored energy can be directed to one or the other RF amplifier channel (18, 19) leading to a more effective and cost saving design of the DC power supply chain.

32. 发明申请

WO2019072555A1 FEEDING A COIL FOR MAGNETIC RESONANCE IMAGING 审中-公开
公开(公告)号：WO2019072555A1
公开(公告)日：2019-04-18
申请号：PCT/EP2018/076059
申请日：2018-09-26
申请人： KONINKLIJKE PHILIPS N.V.
发明人： VERNICKEL, Peter , LEUSSLER, Christoph , SCHMALE, Ingo , FINDEKLEE, Christian , LIPS, Oliver
IPC分类号： G01R33/36 , G01R33/34
摘要： The present invention is directed to a system comprising a body coil (9) for magnetic resonance imaging and an RF amplifier connected to the body coil (9) for feeding the body coil (9) with an RF signal, wherein the body coil (9) comprises two different ports (21, 22) for feeding the RF signal into the body coil (9), the body coil (9) is provided with a switch for selectively activating only one single port (21, 22) for feeding the RF signal to the body coil (9) at a time, and the two ports (21, 22) are located at different locations of the body coil (9) such that the dependence of the reflected part of the RF signal fed into the body coil (9) from the weight of the examination object (1) to which the body coil (9) is applied is different for the two ports (21, 22). In this way, a possibility for adapting a MRI measurement to different load situations due to different weights of an examination object (1) in an easy and efficient way is provided, thereby providing the possibility for impedance matching of the body coil by selecting the appropriate driven port.

33. 发明申请

WO2018065338A1 IMPEDANCE MATCHING USING MULTIPLE RF PORTS 审中-公开
标题翻译：使用多个RF端口进行阻抗匹配
公开(公告)号：WO2018065338A1
公开(公告)日：2018-04-12
申请号：PCT/EP2017/074925
申请日：2017-10-02
申请人： KONINKLIJKE PHILIPS N.V.
发明人： FINDEKLEE, Christian , LEUSSLER, Christoph , UHLEMANN, Falk , VERNICKEL, Peter
IPC分类号： G01R33/36
摘要： The invention provides for a magnetic resonance imaging system (100) comprising a main magnet (104) for generating a main magnetic field within an imaging zone (108). The magnetic resonance imaging system further comprises an RF coil (114) for acquiring magnetic resonance data (164) from the imaging zone, wherein the RF coil comprises multiple RF ports (124, 412, 414, 416, 500, 502, 702, 1004, 1006). The RF coil comprises a switch unit (120) for at least one of the multiple RF ports to individually couple or uncouple the at least one of of the multiple RF ports from the RF coil. The magnetic resonance imaging system further comprises a radio-frequency system (125) for supplying radio-frequency power to each of the multiple RF ports and an RF matching detection system (122) for measuring impedance matching data (166) between the radio-frequency system and the RF coil. Execution of the machine executable instructions causes a processor controlling the magnetic resonance imaging system to measure (200, 300, 302, 304) the impedance matching data using the RF matching detection system; determine (202) switch unit control instructions (168) using the impedance matching data, wherein the switch control instructions contain commands that control the at least one of the multiple RF ports to couple or decouple to impedance match the radio-frequency system to the RF coil; and control (204) the switch unit of the at least one of the multiple RF ports with the switch unit control instructions.
摘要翻译：本发明提供了一种磁共振成像系统（100），其包括用于在成像区（108）内产生主磁场的主磁体（104）。磁共振成像系统还包括用于从成像区采集磁共振数据（164）的RF线圈（114），其中RF线圈包括多个RF端口（124,412,414,416,500,502,702,1004 ，1006）。所述RF线圈包括用于所述多个RF端口中的至少一个的开关单元（120），以将所述多个RF端口中的至少一个与所述RF线圈单独地耦合或断开。磁共振成像系统还包括用于向多个RF端口中的每一个提供射频功率的射频系统（125）和用于测量射频（RF）端口之间的阻抗匹配数据（166）的RF匹配检测系统（122）系统和射频线圈。机器可执行指令的执行致使控制磁共振成像系统的处理器使用RF匹配检测系统测量（200,300,302,304）阻抗匹配数据; 使用所述阻抗匹配数据来确定（202）开关单元控制指令（168），其中所述开关控制指令包含控制所述多个RF端口中的所述至少一个端口以耦合或解耦以使所述射频系统与所述RF 线圈; 并利用开关单元控制指令来控制（204）多个RF端口中的至少一个的开关单元。

34. 发明申请

WO2017174552A1 RF TRANSMIT SYSTEM WITH SELECTABLE DRIVE PORTS FOR MAGNETIC RESONANCE IMAGING APPARATUSES 审中-公开
标题翻译：具有可选择的驱动端口的RF发送系统用于磁共振成像设备
公开(公告)号：WO2017174552A1
公开(公告)日：2017-10-12
申请号：PCT/EP2017/057937
申请日：2017-04-04
申请人： KONINKLIJKE PHILIPS N.V.
发明人： LIPS, Oliver , VERNICKEL, Peter
IPC分类号： G01R33/36 , G01R33/345 , G01R33/565 , G01R33/561 , G01R33/34
CPC分类号： G01R33/3664 , G01R33/34076 , G01R33/3453 , G01R33/3678
摘要： A radio frequency transmit system (40) for use in magnetic resonance imaging apparatuses, comprising a radio frequency driver unit (42) including at least a first radio frequency power source (44; 82) and a second radio frequency power source (46; 84), a radio frequency coil arrangement (48) for generating an RF magnetic excitation field B 1 , and a plurality of switching members (68, 70, 72, 74) electrically connecting the radio frequency power sources (44, 46; 82, 84) to different pairs of drive ports (58, 60, 62, 64) in a first and in at least a second switching status. The first drive port (58) of the first pair of drive ports (58, 60) and the first drive port (62) of the at least second pair of drive ports (62, 64) are arranged spaced by a fixed predetermined angular distance in the azimuthal direction (56) about the center axis (50); and a magnetic resonance imaging system (10) including such radio frequency transmit system (40).
摘要翻译：一种用于磁共振成像装置的射频发射系统（40），包括射频驱动器单元（42），所述射频驱动器单元（42）至少包括第一射频电源（44; 82）和第二射频电源射频功率源（46; 84），用于产生RF磁激励场B 1的射频线圈装置（48），以及多个开关构件（68,70,72,74）以第一和至少第二开关状态将射频电源（44,46; 82,84）电连接到不同对的驱动端口（58,60,62,64）。第一对驱动端口（58,60）中的第一驱动端口（58）和至少第二对驱动端口（62,64）中的第一驱动端口（62）以固定的预定角距离在围绕中心轴线（50）的方位角方向（56）上; 和包括这种射频发射系统（40）的磁共振成像系统（10）。

35. 发明申请

WO2015110616A1 HANDHELD OSCILLATION APPLICATOR FOR USE IN A MAGNETIC RESONANCE RHEOLOGY IMAGING SYSTEM 审中-公开
标题翻译：用于磁共振成像系统的手持振荡应用器
公开(公告)号：WO2015110616A1
公开(公告)日：2015-07-30
申请号：PCT/EP2015/051423
申请日：2015-01-24
申请人： KONINKLIJKE PHILIPS N.V.
发明人： WIRTZ, Daniel , MAZURKEWITZ, Peter , LEUSSLER, Christoph , VERNICKEL, Peter
IPC分类号： G01R33/28 , G01R33/563 , A61B5/00
CPC分类号： G01R33/563 , A61B5/0051 , A61B5/055 , G01R33/28 , G01R33/56358
摘要： A handheld oscillation applicator (40) for use in a magnetic resonance rheology imaging system (10), for applying mechanical oscillations to at least a portion of a subject of interest (20), the handheld oscillation applicator (40) comprising a housing (54), at least one transducer unit (48) configured to output mechanical energy, a piston (68) that is mechanically linked to the at least one transducer unit (48), the piston (68) including a first end (70), a second end (72), and an opening (74) that extends between the first end (70) and the second end (72), wherein the housing (54) comprises at least one opening (60), and the at least one opening (60) of the housing (54) and the opening (74) of the piston (68) at least partially overlap with regard to a housing opening direction (66) defined by an opening center (62) of the opening (60) of the housing (54) at a first surface (56) and an opening center (64) of the opening (60) of the housing (54) at a second surface (58); and an oscillation applicator system (38), including: a handheld oscillation applicator (40), a transducer driving unit (42) for energizing the at least one transducer unit (48), a sensing unit (50) configured to determine a physical quantity that is representative of an amplitude of mechanical oscillations being applied to at least the portion of the subject of interest (20), and to provide an output signal representing the determined physical quantity, at least one closed-loop control circuit for maintaining a mechanical displacement amplitude of the transducer unit (48) at a selected level, wherein the closed- loop control circuit is configured to provide an output signal for controlling the transducer driving unit (42), based on the output signal received from the sensing unit (50).
摘要翻译：一种用于磁共振流变学成像系统（10）中的手持式振荡施加器（40），用于将至少一部分感兴趣的物体（20）施加机械振荡，所述手持式振动施加器（40）包括壳体（54），至少一个构造成输出机械能的换能器单元（48），与所述至少一个换能器单元（48）机械连接的活塞（68），所述活塞（68）包括第一端（70），以及在所述第一端（70）和所述第二端（72）之间延伸的开口（74），其中所述壳体（54）包括至少一个开口（60），并且所述至少一个开口壳体（54）的开口（60）和活塞（68）的开口（74）至少部分地相对于由开口（60）的开口中心（62）限定的壳体打开方向（66）重叠，在第二表面（58）处的第一表面（56）处的壳体（54）和壳体（54）的开口（60）的开口中心（64）; 以及振荡施加器系统（38），包括：手持式振动施加器（40），用于激励所述至少一个换能器单元（48）的换能器驱动单元（42）;感测单元（50），被配置为确定物理量代表施加到感兴趣对象（20）的至少一部分的机械振荡的幅度，并且提供表示确定的物理量的输出信号，至少一个闭环控制电路，用于保持机械位移所述传感器单元（48）的振幅处于所选择的水平，其中所述闭环控制电路被配置为基于从所述感测单元（50）接收的输出信号来提供用于控制所述换能器驱动单元（42）的输出信号，。

36. 发明申请

WO2020144300A1 AUTOMATED DETECTION OF RECEIVE COIL LOCATION 审中-公开
公开(公告)号：WO2020144300A1
公开(公告)日：2020-07-16
申请号：PCT/EP2020/050471
申请日：2020-01-10
申请人： KONINKLIJKE PHILIPS N.V.
发明人： VERNICKEL, Peter , LEUSSLER, Christoph, Günther , LIPS, Oliver , SCHMALE, Ingo , FINDEKLEE, Christian
IPC分类号： G01R33/28 , G01R33/34 , G01R33/36 , G01R33/54 , A61B5/055 , G01R33/341
摘要： The invention provides for a magnetic resonance imaging system (100, 300). The magnetic resonance imaging system comprises: a subject support (120) configured for moving a subject between a loading position (121) and an imaging position (200); a receive magnetic resonance imaging coil (114) configured for being placed on the subject; and a light detection system (115) comprising at least one ambient light sensor for measuring light data (144). The light detection system is any one of the following: mounted to the main magnet such that the light data is measured from the imaging zone and mounted to the receive magnetic resonance imaging coil. The execution of the machine executable (140) instructions by a processor (130) cause the processor to: move (500) the subject support from the loading position to the imaging position; acquire (502) the light data using the at least one ambient light sensor when the subject support is in the imaging position; determine (504) if the receive magnetic resonance imaging coil is positioned for acquiring magnetic resonance imaging data using the light data; and provide (506) a signal (146) if the receive magnetic resonance imaging coil is positioned for acquiring the magnetic resonance imaging data.

37. 发明申请

WO2019158695A1 RF TRANSMIT SYSTEM WITH SWITCHABLE POWER SUPPLY DEVICE 审中-公开
公开(公告)号：WO2019158695A1
公开(公告)日：2019-08-22
申请号：PCT/EP2019/053817
申请日：2019-02-15
申请人： KONINKLIJKE PHILIPS N.V.
发明人： VERNICKEL, Peter , LEUSSLER, Christoph , SCHMALE, Ingo , KEUPP, Jochen
IPC分类号： G01R33/36 , H03F3/24 , H03F3/189 , G01R33/56 , H03F1/02
摘要： The present invention is directed to a RF transmit system (1) for a magnetic resonance examination system where it is intended to provide a solution for the problem of rapidly switching between operation modes of different peak power requirements at good power efficiencies. For this purpose the RF transmit system (1) comprises at least one RF channel (14) wherein the RF channel (14) has an RF amplifier (3), at least two power supply devices (4, 5) wherein each of the power supply devices (4, 5) is configured to supply a voltage to the amplifier (3). The RF transmit system (1) further comprises a DC switch (8) configured to switch the voltage supplied to the amplifier (3) between the power supply devices (4, 5) and a controller (2) configured to switch the voltage based on sensor data.

38. 发明申请

WO2019137984A1 ACTIVE B1+ SHIMMING OF TRANSMISSION COILS 审中-公开
公开(公告)号：WO2019137984A1
公开(公告)日：2019-07-18
申请号：PCT/EP2019/050517
申请日：2019-01-10
申请人： KONINKLIJKE PHILIPS N.V.
发明人： LEUSSLER, Christoph , VERNICKEL, Peter , LIPS, Oliver , SCHMALE, Ingo , WIRTZ, Daniel
IPC分类号： G01R33/36 , G01R33/565 , G01R33/34 , G01R33/3415
CPC分类号： G01R33/5659 , G01R33/34046 , G01R33/3415 , G01R33/3657
摘要： The invention provides for a magnetic resonance imaging system (100) comprising a radio frequency system (116, 114, 118) configured for acquiring magnetic resonance data (144) from an imaging zone (108). The radio frequency system is configured for sending and receiving radio frequency signals to acquire the magnetic resonance data, wherein the radio frequency system comprises: an elliptical transmission coil (114) configured for generating a B1+ excitation field within the imaging zone; and an active B1 shim coil (118) configured for being placed within the imaging zone, wherein the radio frequency system is configured for suppling radio frequency power to the active B1 shim coil during the generation of the B1+ excitation field by the elliptical transmission coil, wherein the B1 shim coil is configured for shimming the B1+ excitation field within the imaging zone.

39. 发明申请

WO2017097881A1 RADIO FREQUENCY COIL-ARRAY FOR MAGNETIC RESONANCE EXAMINATION SYSTEM 审中-公开
标题翻译：用于磁共振检测系统的射频线圈阵列
公开(公告)号：WO2017097881A1
公开(公告)日：2017-06-15
申请号：PCT/EP2016/080211
申请日：2016-12-08
申请人： KONINKLIJKE PHILIPS N.V.
发明人： VERNICKEL, Peter , FINDEKLEE, Christian , LEUSSLER, Christoph
IPC分类号： G01R33/36 , G01R33/3415
CPC分类号： G01R33/365 , G01R33/3415
摘要： A radio frequency (RF) coil array with multiple RF coil elements for a magnetic resonance examination system is disclosed. The decoupling of RF coil elements involves sets (pairs) of transformers and may also include geometrical overlap of adjacent coils. The mutual coupling between the transformers is adjustable. This provides additional degrees of freedom to fully decouple the RF coil elements from each other.
摘要翻译：公开了一种用于磁共振检查系统的具有多个RF线圈元件的射频（RF）线圈阵列。 RF线圈元件的去耦合涉及变压器的组（对）并且还可以包括相邻线圈的几何重叠。变压器之间的相互耦合是可调的。这提供了额外的自由度以完全解耦RF线圈元件。

40. 发明申请

WO2017032696A1 GENERATION OF RF SIGNALS FOR EXCITATION OF NUCLEI IN MAGNETIC RESONANCE SYSTEMS 审中-公开
标题翻译：用于在磁共振系统中激发核的RF信号的生成
公开(公告)号：WO2017032696A1
公开(公告)日：2017-03-02
申请号：PCT/EP2016/069665
申请日：2016-08-19
申请人： KONINKLIJKE PHILIPS N.V.
发明人： LEUSSLER, Christoph , VERNICKEL, Peter
IPC分类号： G01R33/36 , G01R33/38
CPC分类号： G01R33/3607 , G01R33/3614 , G01R33/3804
摘要： The invention provides for a system (200) for generation of a radio frequency, RF, excitation signal for excitation of nuclei via an RF excitation coil (114) in a magnetic resonance system (100). The system comprises power generation units (203-206) each comprising a synthesizer (211-214), an RF amplifier (231-234), and a first feedback loop (251-254) unit adapted to configure the synthesizer to generate an RF signal which after amplification by the RF amplifier has a predefined first signal characteristic and a combiner (261) adapted for combining the RF signals amplified by the RF amplifiers for obtaining the RF excitation signal.
摘要翻译：本发明提供一种用于产生用于通过磁共振系统（100）中的RF激励线圈（114）激发核的射频RF激励信号的系统（200）。该系统包括发电单元（203-206），每个发电单元包括合成器（211-214），RF放大器（231-234）和第一反馈回路（251-254）单元，该单元适于配置合成器以产生RF RF放大器放大后具有预定义的第一信号特性的信号，以及适于组合由RF放大器放大的RF信号以获得RF激励信号的组合器（261）。

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