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11. 发明申请

WO2012080898A1 PASSIVE B1 FIELD SHIMMING 审中-公开
标题翻译：被动B1场SHIMMING
公开(公告)号：WO2012080898A1
公开(公告)日：2012-06-21
申请号：PCT/IB2011/055450
申请日：2011-12-05
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , ZHAI, Zhiyong , MORICH, Michael Andrew , HARVEY, Paul Royston , FUDERER, Miha
发明人： ZHAI, Zhiyong , MORICH, Michael Andrew , HARVEY, Paul Royston , FUDERER, Miha
IPC分类号： G01R33/34 , G01R33/54
CPC分类号： G01R33/3873 , G01R33/246 , G01R33/34 , G01R33/34076 , G01R33/543 , G01R33/5659
摘要： Coil elements (18) generate a B 1 excitation field in an examination region (14), which B 1 excitation field is distorted by patient loading (e.g., wavelength effects). Passive shimming elements (22, 24) are disposed between the coil elements and the subject in order to improve the B 1 field uniformity. In one embodiment, passive shimming elements include one or more dielectric rods (55) disposed below the subject which generate no substantial MR proton signal and which have a permittivity of at least 100 and preferably greater than 500. In another embodiment, tubes (24) adjacent each coil element are supplied with a dielectric liquid, a thickness of the dielectric liquid between the coil element and the subject adjusting a phase of the B 1 field generated by the coil element. Active B 1 shimming may be combined with passive shimming elements (22, 24) to effect an improved RF field homogeneity result.
摘要翻译：线圈元件（18）在检查区域（14）中产生B1激励场，其中B1激励场由患者负载变形（例如，波长效应）。被动调光元件（22,24）设置在线圈元件和被摄体之间，以提高B1场均匀性。在一个实施例中，被动调光元件包括设置在对象下方的一个或多个介电棒（55），其不产生实质的MR质子信号，并且具有至少100，优选大于500的介电常数。在另一实施例中，管（24）相邻的每个线圈元件被提供有电介质液体，线圈元件和对象之间的电介质液体的厚度调节由线圈元件产生的B1场的相位。有源B1匀场可以与被动调光元件（22,24）组合以实现改进的RF场均匀性结果。

12. 发明申请

WO2008104895A1 DOUBLY RESONANT HIGH FIELD RADIO FREQUENCY SURFACE COILS FOR MAGNETIC RESONANCE 审中-公开
标题翻译：双磁共振高频无线电频率磁场线圈
公开(公告)号：WO2008104895A1
公开(公告)日：2008-09-04
申请号：PCT/IB2008/050328
申请日：2008-01-30
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , ZHAI, Zhiyong , MORICH, Michael, A. , DEMEESTER, Gordon, D.
发明人： ZHAI, Zhiyong , MORICH, Michael, A. , DEMEESTER, Gordon, D.
IPC分类号： G01R33/341 , G01R33/36 , G01R33/422
CPC分类号： G01R33/3635 , G01R33/34007 , G01R33/341 , G01R33/3678
摘要： A radio frequency coil comprises an annular conductor or parallel annular conductors (22, 22c, 22d) configured to support: (i) a uniform electrical current distribution generating a first B 1 field (B 1,uniform ) at a first magnetic resonance frequency directed out of a plane of the annular conductor or conductors; and (ii) a sinusoidal electrical current distribution generating a second B 1 field (B 1,sine ) at a second magnetic resonance frequency directed parallel with the plane of the annular conductor or conductors. A magnetic resonance scanner comprises: a magnet (10) generating a static magnetic field (B 0 ); a magnetic field gradient system (14) configured to superimpose selected magnetic field gradients on the static magnetic field; and said radio frequency coil including said annular conductor or parallel annular conductors (22, 22c, 22d).
摘要翻译：射频线圈包括环形导体或平行环形导体（22,22c，22d），其被配置为支持：（i）均匀的电流分布，其产生第一B 1场（B 1），均匀的），以指向环形导体或导体的平面的第一磁共振频率; 和（ii）在与环形导体的平面平行的第二磁共振频率处产生产生第二B 1场（B 1，正弦）的正弦电流分布或导体。磁共振扫描器包括：产生静磁场（B SUB）的磁体（10）; 磁场梯度系统（14），被配置为将选定的磁场梯度叠加在静磁场上; 并且所述射频线圈包括所述环形导体或平行环形导体（22,22c，22d）。

13. 发明申请

WO2006033047A3 ADJUSTMENT OF RF-FIELD HOMOGENEITY IN HIGH-FIELD MR IMAGING 审中-公开
标题翻译：高场成像中RF场均匀性的调整
公开(公告)号：WO2006033047A3
公开(公告)日：2006-05-11
申请号：PCT/IB2005053002
申请日：2005-09-13
申请人： KONINKL PHILIPS ELECTRONICS NV , HARVEY PAUL R , PRINS WILLEM M , ZHAI ZHIYONG , FUDERER MIHA , VAN YPEREN GERRIT H
发明人： HARVEY PAUL R , PRINS WILLEM M , ZHAI ZHIYONG , FUDERER MIHA , VAN YPEREN GERRIT H
IPC分类号： G01R33/36
CPC分类号： G01R33/543 , G01R33/34046 , G01R33/5612 , G01R33/5659
摘要： The invention relates to a device for MR imaging of a body (7) placed in a stationary and substantially homogeneous main magnetic field, with an RF transmit antenna (6) for radiating RF pulses towards the body (7), which RF transmit antenna (6) has different resonance modes. In order to improve image uniformity in high field MR imaging, the invention proposes the device (1) being arranged to determine the size and/or the aspect ratio of the body (7), and to acquire an MR image of the body (7) by means of an imaging sequence comprising RF pulses, wherein the phases and amplitudes of the different resonance modes of the RF transmit antenna (6) excited during irradiation of the RF pulses are controlled on the basis of the size and/or aspect ratio of the body (7).
摘要翻译：本发明涉及一种放置在固定且基本上均匀的主磁场中的主体（7）的MR成像装置，其具有用于向身体（7）辐射RF脉冲的RF发射天线（6），该RF发射天线 6）具有不同的共振模式。为了提高高场MR成像中的图像均匀性，本发明提出了设备（1）被设置为确定身体（7）的尺寸和/或纵横比，并获取身体的MR图像（7 ），其中包括RF脉冲的成像序列，其中在RF脉冲的照射期间激发的RF发射天线（6）的不同谐振模式的相位和振幅基于大小和/或纵横比身体（7）。

14. 发明申请

WO2006033047A2 MAGNETIC RESONANCE DEVICE AND METHOD 审中-公开
标题翻译：磁共振装置及方法
公开(公告)号：WO2006033047A2
公开(公告)日：2006-03-30
申请号：PCT/IB2005/053002
申请日：2005-09-13
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HARVEY, Paul, R. , PRINS, Willem, M. , ZHAI, Zhiyong , FUDERER, Miha , VAN YPEREN, Gerrit, H.
发明人： HARVEY, Paul, R. , PRINS, Willem, M. , ZHAI, Zhiyong , FUDERER, Miha , VAN YPEREN, Gerrit, H.
IPC分类号： G01R33/36
CPC分类号： G01R33/543 , G01R33/34046 , G01R33/5612 , G01R33/5659
摘要： The invention relates to a device for MR imaging of a body (7) placed in a stationary and substantially homogeneous main magnetic field, with an RF transmit antenna (6) for radiating RF pulses towards the body (7), which RF transmit antenna (6) has different resonance modes. In order to improve image uniformity in high field MR imaging, the invention proposes the device (1) being arranged to determine the size and/or the aspect ratio of the body (7), and to acquire an MR image of the body (7) by means of an imaging sequence comprising RF pulses, wherein the phases and amplitudes of the different resonance modes of the RF transmit antenna (6) excited during irradiation of the RF pulses are controlled on the basis of the size and/or aspect ratio of the body (7).
摘要翻译：本发明涉及一种放置在固定且基本上均匀的主磁场中的主体（7）的MR成像装置，其具有用于向身体（7）辐射RF脉冲的RF发射天线（6），该RF发射天线 6）具有不同的共振模式。为了提高高场MR成像中的图像均匀性，本发明提出了设备（1）被设置为确定身体（7）的尺寸和/或纵横比，并获取身体的MR图像（7 ），其中包括RF脉冲的成像序列，其中在RF脉冲的照射期间激发的RF发射天线（6）的不同谐振模式的相位和振幅基于大小和/或纵横比身体（7）。

15. 发明申请

WO2005050239A1 RF COIL SYSTEM FOR SUPER HIGH FIELD (SHF) MRI 审中-公开
标题翻译：用于超高频（SHF）MRI的RF线圈系统
公开(公告)号：WO2005050239A1
公开(公告)日：2005-06-02
申请号：PCT/IB2004/052291
申请日：2004-11-03
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , LEUSSLER, Christoph, G. , FINDEKLEE, Christian , MORICH, Michael, A. , ZHAI, Zhiyong , DEMEESTER, Gordon, D.
发明人： LEUSSLER, Christoph, G. , FINDEKLEE, Christian , MORICH, Michael, A. , ZHAI, Zhiyong , DEMEESTER, Gordon, D.
IPC分类号： G01R33/422
CPC分类号： G01R33/3415 , G01R33/34046 , G01R33/34076 , G01R33/345 , G01R33/3453 , G01R33/3635 , G01R33/3642 , G01R33/365 , G01R33/3678 , G01R33/422 , G01R33/5659
摘要： A radio frequency coil system (38) for magnetic resonance imaging includes a plurality of parallel spaced apart rungs (60) which each includes rung capacitors (68). An end cap (64) is disposed at a closed end (66) of the coil system (38). An RF shield (62) is connected to the end cap (64) and surrounds the rungs (60), extending in a direction substantially parallel to rungs (60). The RF coil system (38) may be used as birdcage, TEM, hybrid, combination birdcage and TEM, or other.
摘要翻译：一种用于磁共振成像的射频线圈系统（38）包括多个平行隔开的梯级（60），每个梯级包括梯级电容器（68）。端盖（64）设置在线圈系统（38）的封闭端（66）处。 RF屏蔽（62）连接到端盖（64）并且围绕梯级（60）沿着基本平行于梯级（60）的方向延伸。 RF线圈系统（38）可以用作鸟笼，TEM，混合，组合鸟笼和TEM等。

16. 发明申请

WO2012004728A3 ROUTER AND COIL ARRAY FOR ULTRA HIGH FIELD MRI 审中-公开
标题翻译：用于超声场MRI的路由器和线圈阵列
公开(公告)号：WO2012004728A3
公开(公告)日：2012-03-29
申请号：PCT/IB2011052950
申请日：2011-07-04
申请人： KONINKL PHILIPS ELECTRONICS NV , MORICH MICHAEL A , ZHAI ZHIYONG , NIEMAN KEVIN M , WONG EDDY Y P , MALIK NABEEL
发明人： MORICH MICHAEL A , ZHAI ZHIYONG , NIEMAN KEVIN M , WONG EDDY Y P , MALIK NABEEL
IPC分类号： G01R33/3415 , G01R33/36 , G01R33/561
CPC分类号： G01R33/3642 , G01R33/3415 , G01R33/3607 , G01R33/3621 , G01R33/3678 , G01R33/5612
摘要： A router (60), for use with magnetic resonance systems (10), selectively routesuniqueexcitation signals, generated by a multi - channelradio - frequency (RF) amplifier, over transmission lines (Tx) to any one of a plurality of connection panels (66) which each acceptsat least one RF coil assembly having multiple coil elements (20). Each connection panel (66) includes transceiver ports (68) for connecting at least one conductor (22,24) of thecoil elements (20) to a corresponding transceiver channel (T/R). The router (60) selectively routes magnetic resonance signals received by the conductors (22,24) from the transceiver channels (T/R) to a multi - channel RF receiver (41). The coin elements may carry sine-mode currents or uniform currents.
摘要翻译：与磁共振系统（10）一起使用的路由器（60）选择性地将由多信道放大器（RF）放大器产生的激励信号通过传输线（Tx）传送到多个连接面板（66）中的任一个），其每个接受具有多个线圈元件（20）的至少一个RF线圈组件。每个连接面板（66）包括用于将线圈元件（20）的至少一个导体（22,24）连接到对应的收发器通道（T / R）的收发器端口（68）。路由器（60）选择性地将由导体（22,24）接收的磁共振信号从收发信道（T / R）传送到多信道RF接收机（41）。硬币元件可以携带正弦模式电流或均匀电流。

17. 发明申请

WO2012004728A2 ROUTER AND COIL ARRAY FOR ULTRA HIGH FIELD MRI 审中-公开
标题翻译：用于超声场MRI的路由器和线圈阵列
公开(公告)号：WO2012004728A2
公开(公告)日：2012-01-12
申请号：PCT/IB2011/052950
申请日：2011-07-04
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , MORICH, Michael, A. , ZHAI, Zhiyong , NIEMAN, Kevin, M. , WONG, Eddy, Y. P. , MALIK, Nabeel
发明人： MORICH, Michael, A. , ZHAI, Zhiyong , NIEMAN, Kevin, M. , WONG, Eddy, Y. P. , MALIK, Nabeel
IPC分类号： G01R33/3415
CPC分类号： G01R33/3642 , G01R33/3415 , G01R33/3607 , G01R33/3621 , G01R33/3678 , G01R33/5612
摘要： A router (60), for use with magnetic resonance systems (10), selectively routes unique excitation signals, generated by a multi-channel radio-frequency (RF) amplifier,over transmission lines (Tx) to any one of a plurality of connection panels (66) which each accepts at least one RF coil assembly having multiple coil elements (20). Each connection panel (66) includes transceiver ports (68) for connecting at least one conductor (22,24) of the coil elements(20) to a corresponding transceiver channel (T/R). The router (60) selectively routes magnetic resonance signals received by the conductors (22,24) from the transceiver channels (T/R) to a multi-channel RF receiver (41).
摘要翻译：与磁共振系统（10）一起使用的路由器（60）选择性地将由多通道射频（RF）放大器产生的唯一激励信号通过传输线（Tx）路由到多个连接中的任何一个每个接收至少一个具有多个线圈元件（20）的RF线圈组件的面板（66）。每个连接面板（66）包括用于将线圈元件（20）的至少一个导体（22,24）连接到对应的收发器通道（T / R）的收发器端口（68）。路由器（60）选择性地将由导体（22,24）接收的磁共振信号从收发器通道（T / R）传送到多声道RF接收器（41）。

18. 发明申请

WO2007124246A1 MR INVOLVING HIGH SPEED COIL MODE SWITCHING BETWEEN I-CHANNEL LINEAR, Q-CHANNEL LINEAR, QUADRATURE AND ANTI-QUADRATURE MODES 审中-公开
标题翻译：涉及I通道线性，Q通道线性，平坦度和反平衡模式之间的高速线圈切换
公开(公告)号：WO2007124246A1
公开(公告)日：2007-11-01
申请号：PCT/US2007/065844
申请日：2007-04-03
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , ZHAI, Zhiyong , DE MEESTER, Gordon, D. , MORICH, Michael, A. , HARVEY, Paul, R.
发明人： ZHAI, Zhiyong , DE MEESTER, Gordon, D. , MORICH, Michael, A. , HARVEY, Paul, R.
IPC分类号： G01R33/34
CPC分类号： G01R33/34046 , G01R33/246 , G01R33/3664 , G01R33/3678 , G01R33/5659
摘要： Hybrid circuitry (40, 40', 40'') for operatively coupling a radio frequency drive signal (70) with a quadrature coil (30) is configurable in one of at least two coil modes of a group consisting of: (i) a linear I channel mode in which an I channel input port (42) is driven without driving a Q channel input port (44); (ii) a linear Q channel mode in which the Q channel input port is driven without driving the I channel input port; (iii) a quadrature mode in which both the I and Q channel input ports are driven with a selected positive phase difference; and (iv) an anti quadrature mode in which both the I and Q channel input ports are driven with a selected negative phase difference. A temporal sequence of the at least two coil modes may be determined and employed to compensate for B 1 inhomogeneity.
摘要翻译：用于将射频驱动信号（70）与正交线圈（30）可操作地耦合的混合电路（40,40'，40“）可配置成以下组中的至少两个线圈模式之一：（i）线性I通道模式，其中驱动I通道输入端口（42）而不驱动Q通道输入端口（44）; （ii）在不驱动I通道输入端口的情况下驱动Q通道输入端口的线性Q通道模式; （iii）正交模式，其中I和Q通道输入端口都以选择的正相位差驱动; 以及（iv）反正交模式，其中I和Q通道输入端口都以选定的负相位差驱动。可以确定并采用至少两个线圈模式的时间序列来补偿B 1不均匀性。

19. 发明申请

WO2007042951A1 MULTIPLE-CHANNEL TRANSMIT MAGNETIC RESONANCE 审中-公开
标题翻译：多通道发射磁共振
公开(公告)号：WO2007042951A1
公开(公告)日：2007-04-19
申请号：PCT/IB2006/053294
申请日：2006-09-14
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , ZHAI, Zhiyong , MORICH, Michael, A. , DE MEESTER, Gordon, D.
发明人： ZHAI, Zhiyong , MORICH, Michael, A. , DE MEESTER, Gordon, D.
IPC分类号： G01R33/32 , G01R33/3415
CPC分类号： G01R33/5612 , G01R33/246 , G01R33/3415
摘要： In a transmit apparatus, a multi-channel radio frequency transmitter (30, 46) includes a plurality of transmit elements (32) defining at least two independently operable transmit channels. A transmit configuration selector (54) determines a selected transmit configuration (60) specifying amplitude and phase applied to each transmit channel to generate a B 1 field in a corresponding selected region (90) of a subject (38) coupled with the radio frequency transmitter. The transmit configuration selector determines the selected transmit configuration based on B 1 mapping (58) of the subject and a B 1 field quality assessment employing at least two different B 1 field quality measures.
摘要翻译：在发射装置中，多频道射频发射机（30,46）包括限定至少两个可独立操作的发射信道的多个发射元件（32）。发射配置选择器（54）确定指定施加到每个发射信道的幅度和相位的选择的发射配置（60），以在对象（38）的相应选择的区域（90）中产生一个B 1 ）与射频发射机相结合。发射配置选择器基于对象的B 1映射（58）确定所选择的发射配置，并且使用至少两个不同的B＆lt; 1＆gt; 1 现场质量措施。

20. 发明申请

WO2006134557A1 RF VOLUME COIL WITH SELECTABLE FIELD OF VIEW 审中-公开
标题翻译：具有可选择视场的RF体积线圈
公开(公告)号：WO2006134557A1
公开(公告)日：2006-12-21
申请号：PCT/IB2006/051884
申请日：2006-06-13
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , ZHAI, Zhiyong , MORICH, Michael, A. , DEMEESTER, Gordon, D. , GAUSS, Robert, C.
发明人： ZHAI, Zhiyong , MORICH, Michael, A. , DEMEESTER, Gordon, D. , GAUSS, Robert, C.
IPC分类号： G01R33/34
CPC分类号： G01R33/34046 , G01R33/3664
摘要： A radio frequency coil for magnetic resonance imaging or spectroscopy includes a plurality of generally parallel conductive members (70) surrounding a region of interest (14). One or more end members (72, 74) are disposed generally transverse to the plurality of parallel conductive members. A generally cylindrical radio frequency shield (32) surrounds the plurality of generally parallel conductive members. Switchable circuitry (80, 80') selectably has: (i) a first switched configuration (90, 90') in which the conductive members are operatively connected with the one or more end members; and (ii) a second switched configuration (92, 92') in which the conductive members are operatively connected with the radio frequency shield. The radio frequency coil operates in a birdcage resonance mode in the first switched configuration and operates in a TEM resonance mode in the second switched configuration.
摘要翻译：用于磁共振成像或光谱的射频线圈包括围绕感兴趣区域（14）的多个大致平行的导电构件（70）。一个或多个端部构件（72,74）大致横向于多个平行导电构件设置。通常为圆柱形的射频屏蔽（32）围绕多个大致平行的导电构件。可切换电路（80,80'）可选择地具有：（i）第一开关构造（90,90'），其中导电构件与一个或多个端构件可操作地连接; 和（ii）其中导电构件与射频屏蔽可操作地连接的第二切换配置（92,92'）。射频线圈在第一切换配置中以鸟笼共振模式工作，并且在第二切换配置中以TEM共振模式操作。

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