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1. 发明申请

WO2011039692A2 MR IMAGING USING MULTI-CHANNEL RF EXCITATION 审中-公开
标题翻译： MR成像使用多通道RF激励
公开(公告)号：WO2011039692A2
公开(公告)日：2011-04-07
申请号：PCT/IB2010/054339
申请日：2010-09-27
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , FUDERER, Miha , ROZIJN, Thomas, Hendrik , KATSCHER, Ulrich , NEHRKE, Kay , HARVEY, Paul, Royston
发明人： FUDERER, Miha , ROZIJN, Thomas, Hendrik , KATSCHER, Ulrich , NEHRKE, Kay , HARVEY, Paul, Royston
CPC分类号： G01R33/5612 , G01R33/246 , G01R33/5659
摘要： The invention relates to a magnetic resonance imaging apparatus comprising an array of two or more RF antennas(9) for transmitting RF pulses to and receiving MR signals from a body(7) of a patient positioned in an examination volume (2), the RF antennas (9) having spatial transmit and receive sensitivity profiles. The apparatus is arranged to: -control the temporal succession, the phase, and the amplitude of the RF feeding of each individual RF antenna (9), the phases and amplitudes being determined from the spatial transmit sensitivity profiles of the RF antennas(9), and -reconstruct a MR image from a combination of the received MR signals received via the individual RF antennas(9) and from the spatial receive sensitivity profiles of the RF antennas(9). The invention proposes that the apparatus is further arranged to: -determine the spatial transmit sensitivity profiles of the RF antennas (9) from the spatial receive sensitivity profiles of the RF antennas (9), or -determine the spatial receive sensitivity profiles of the RF antennas (9) from the spatial transmit sensitivity profiles of the RF antennas (9).
摘要翻译：磁共振成像装置技术领域本发明涉及一种磁共振成像设备，其包括用于将RF脉冲发射到患者身体（7）并从患者身体（7）接收MR信号的两个或更多个RF天线（9）的阵列，检查体积（2），所述RF天线（9）具有空间发射和接收灵敏度分布。该设备被布置为： - 控制每个单独的RF天线（9）的RF馈送的时间顺序，相位和幅度，相位和幅度根据RF天线（9）的空间发射灵敏度曲线确定，并且 - 从经由各个RF天线（9）接收到的MR信号的组合以及从RF天线（9）的空间接收灵敏度简档中重建MR图像。本发明提出，该设备还被布置为： - 根据RF天线（9）的空间接收灵敏度分布来确定RF天线（9）的空间发射灵敏度分布，或者 - 确定RF 天线（9）与RF天线（9）的空间发射灵敏度分布相匹配。

2. 发明申请

WO2008026174A3 MULTI-CHANNEL MAGNETIC RESONANCE IMAGING AND SPECTROSCOPY 审中-公开
标题翻译：多通道磁共振成像和光谱
公开(公告)号：WO2008026174A3
公开(公告)日：2008-06-12
申请号：PCT/IB2007053475
申请日：2007-08-29
申请人： KONINKL PHILIPS ELECTRONICS NV , HARVEY PAUL ROYSTON
发明人： HARVEY PAUL ROYSTON
IPC分类号： G01R33/3415
CPC分类号： G01R33/3415 , G01R33/3664 , G01R33/4838 , G01R33/5659
摘要： A magnetic resonance (MR) system comprising multiple radio-frequency (RP) coils (303) configured to apply an MR pulse sequence (100) including at least a preparation segment (PRP) and an acquisition segment (ACQ), wherein the preparation segment (PRP) and the acquisition segment (ACQ) each comprise one or more excitation pulses, is disclosed herein. The MR system further comprises a first control unit (308) configured to apply the one or more excitation pulses of the preparation segment (PRP) by activating the multiple radio -frequency coils in a first excitation pattern, and a second control unit configured to apply the one or more excitation pulses of the acquisition segment (ACQ) by activating the multiple radio-frequency coils in a second excitation pattern, thereby providing dynamic rf shimming.
摘要翻译：一种包括多个射频（RP）线圈（303）的磁共振（MR）系统，其被配置为施加至少包括准备段（PRP）和采集段（ACQ）的MR脉冲序列（100），其中所述准备段（PRP）和采集段（ACQ）各自包括一个或多个激励脉冲。 MR系统还包括：第一控制单元（308），被配置为通过以第一激励模式激活多个射频线圈来施加准备段（PRP）的一个或多个激励脉冲;以及第二控制单元，被配置为应用通过在第二激励模式中激活多个射频线圈，从而提供动态rf匀场，获取段（ACQ）的一个或多个激励脉冲。

3. 发明申请

WO2008026174A2 MULTI-CHANNEL MAGNETIC RESONANCE IMAGING AND SPECTROSCOPY 审中-公开
标题翻译：多通道磁共振成像和光谱
公开(公告)号：WO2008026174A2
公开(公告)日：2008-03-06
申请号：PCT/IB2007/053475
申请日：2007-08-29
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HARVEY, Paul Royston
发明人： HARVEY, Paul Royston
CPC分类号： G01R33/3415 , G01R33/3664 , G01R33/4838 , G01R33/5659
摘要： A magnetic resonance (MR) system comprising multiple radio-frequency (RF) coils (303) configured to apply an MR pulse sequence (100) including at least a preparation segment (PRP) and an acquisition segment (ACQ), wherein the preparation segment (PRP) and the acquisition segment (ACQ) each comprise one or more excitation pulses, is disclosed herein. The MR system further comprises a first control unit (308) configured to apply the one or more excitation pulses of the preparation segment (PRP) by activating the multiple radio -frequency coils in a first excitation pattern, and a second control unit configured to apply the one or more excitation pulses of the acquisition segment (ACQ) by activating the multiple radio-frequency coils in a second excitation pattern.
摘要翻译：一种包括多个射频（RF）线圈（303）的磁共振（MR）系统，被配置为施加至少包括准备段（PRP）和采集区段（ACQ）的MR脉冲序列（100），其中准备段（PRP）和采集段（ACQ）各自包括一个或多个激励脉冲。 MR系统还包括：第一控制单元（308），被配置为通过以第一激励模式激活多个射频线圈来施加准备段（PRP）的一个或多个激励脉冲;以及第二控制单元，被配置为应用通过以第二激励模式激活多个射频线圈，获取段（ACQ）的一个或多个激励脉冲。

4. 发明申请

WO2012093321A1 MULTI-CHANNEL TRANSMIT MR IMAGING 审中-公开
标题翻译：多通道传输MR成像
公开(公告)号：WO2012093321A1
公开(公告)日：2012-07-12
申请号：PCT/IB2011/055972
申请日：2011-12-27
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HARVEY, Paul, Royston , MENS, Wilhelmus, Reinerius, Maria
发明人： HARVEY, Paul, Royston , MENS, Wilhelmus, Reinerius, Maria
IPC分类号： G01R33/561 , G01R33/36 , G01R33/565
CPC分类号： G01R33/34 , G01R33/3678 , G01R33/5612 , G01R33/5659
摘要： The invention relates to a multi - channel (e.g. quadrature) MRI transmit system in which RF power amplifiers having different power capabilities are used in different transmit channels. This results in reduced system costs, due to the avoidance of an unused excess of RF power capability when the power demand for obtaining a homogeneous Bl- field (RF shimming) is asymmetric and the asymmetry is qualitatively the same for different imaging applications. The multi - channel transmit unit may also comprise a commutator which enables to selectively connect each RF power amplifier to each drive port of transmit coil arrangement (e.g. a birdcage coil).
摘要翻译：本发明涉及一种多通道（例如正交）MRI发射系统，其中具有不同功率能力的RF功率放大器用于不同的发射信道。这导致了当获得均匀的Bl场（RF匀场）的功率需求是不对称的且不对称性对于不同的成像应用在质量上是相同的时，由于避免了RF功率能力的未使用过量，导致系统成本降低。多通道发射单元还可以包括换向器，其能够将每个RF功率放大器选择性地连接到发射线圈装置（例如鸟笼线圈）的每个驱动端口。

5. 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。

6. 发明申请

WO2011086512A1 ELECTRIC PROPERTIES TOMOGRAPHY IMAGING METHOD AND SYSTEM 审中-公开
标题翻译：电性质地图成像方法与系统
公开(公告)号：WO2011086512A1
公开(公告)日：2011-07-21
申请号：PCT/IB2011/050146
申请日：2011-01-13
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , VOIGT, Tobias, Ratko , KATSCHER, Ulrich , ROZIJN, Thomas, Hendrik , HARVEY, Paul, Royston , HOMANN, Hanno, Heyke , FINDEKLEE, Christian , HANSIS, Eberhard, Sebastian
发明人： VOIGT, Tobias, Ratko , KATSCHER, Ulrich , ROZIJN, Thomas, Hendrik , HARVEY, Paul, Royston , HOMANN, Hanno, Heyke , FINDEKLEE, Christian , HANSIS, Eberhard, Sebastian
IPC分类号： G01R33/48 , G01R33/14 , A61B5/055
CPC分类号： G01R33/48 , A61B5/0536 , A61B5/055 , G01R33/246 , G01R33/443
摘要： The invention relates to a magnetic resonance method of electric properties tomography imaging of an object, the method comprising: - applying an excitation RF field to the object via a coil at a first spatial coil position (402), acquiring resulting magnetic resonance signals via a receiving channel from the object, determining from the acquired magnetic resonance signals a first phase distribution and a first amplitude of a given magnetic field component of the excitation RF field of the coil at the first coil position (402), repeating these steps with a coil at a second different spatial coil position (404), to obtain a second phase distribution, determining a phase difference between the first and second phase distribution, - determining a first and a second complex permittivity of the object, the first complex permittivity comprising the first amplitude of the given magnetic field component and the second complex permittivity comprising the second amplitude of the given magnetic field component and the phase difference, - equating the first complex permittivity and the second complex permittivity for receiving a final equation and determining from the final equation a phase of the given magnetic field component for the first coil position (402).
摘要翻译：本发明涉及一种物体的电性能断层摄影成像的磁共振方法，该方法包括： - 通过第一空间线圈位置（402）上的线圈将激发RF场施加到物体上，通过经由从所述对象接收信道，从所获取的磁共振信号确定所述线圈在所述第一线圈位置（402）处的所述激励RF场的给定磁场分量的第一相位分布和第一振幅，用线圈重复这些步骤在第二不同空间线圈位置（404）处，以获得第二相位分布，确定所述第一和第二相位分布之间的相位差， - 确定所述对象的第一和第二复介电常数，所述第一复介电常数包括所述第一和第二相位分布给定磁场分量的振幅和包括给定磁f的第二振幅的第二复介电常数相位差， - 将第一复介电常数和第二复介电常数相等于接收最终方程，并从最终方程确定用于第一线圈位置（402）的给定磁场分量的相位。

7. 发明申请

WO2009128013A1 REAL-TIME LOCAL AND GLOBAL SAR ESTIMATION FOR PATIENT SAFETY AND IMPROVED SCANNING PERFORMANCE 审中-公开
标题翻译：实时安全性和改进扫描性能的实时局部和全球SAR估计
公开(公告)号：WO2009128013A1
公开(公告)日：2009-10-22
申请号：PCT/IB2009/051531
申请日：2009-04-13
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , GRAESSLIN, Ingmar , BIEDERER, Sven , KATSCHER, Ulrich , SCHWESER, Ferdinand , BOERNERT, Peter , HARVEY, Paul, Royston , MENS, Wilhelmus, Reinerius, Maria
发明人： GRAESSLIN, Ingmar , BIEDERER, Sven , KATSCHER, Ulrich , SCHWESER, Ferdinand , BOERNERT, Peter , HARVEY, Paul, Royston , MENS, Wilhelmus, Reinerius, Maria
IPC分类号： G01R33/58
CPC分类号： G01R33/583 , G01R33/288 , G01R33/5612 , G01R33/5659
摘要： In a method and apparatus to enable increased RF duty cycle in high field MR scans, a specific energy absorption rate (SAR) calculation processor (36) calculates the local and global SAR or even a spatial SAR map. The efficient implementation by using pre- averaged data (based on E-fields) makes a fast and accurate SAR estimation possible. By incorporating additional information as e.g. patient position the SAR calculation accuracy can be increased as well as by using more patient specific precalculated information (e.g. based on different bio meshes), the so called Q-matrices. Optionally, a sequence controller (24) creates a global SAR optimal RF pulse. After the optimal RF pulse is applied, the SAR and its spatial distribution are determined. SAR hotspots are also determined. Q-matrices within an appropriate radius around the hotspots are averaged and added to a global Q-matrix in a weighted fashion. After the global Q-matrix is updated, a new optimal RF pulse is created. One or more of the steps can be repeated to converge the SAR to a minimum.
摘要翻译：在能够在高场MR扫描中增加RF占空比的方法和装置中，比能量吸收率（SAR）计算处理器（36）计算局部和全局SAR或甚至空间SAR图。通过使用预平均数据（基于电场）的有效实现使得可以进行快速和准确的SAR估计。通过结合附加信息，例如患者位置可以增加SAR计算精度，以及通过使用更多的患者特定的预先计算的信息（例如，基于不同的生物网格），即所谓的Q矩阵。可选地，序列控制器（24）创建全局SAR最优RF脉冲。在施加最佳RF脉冲之后，确定SAR及其空间分布。 SAR热点也是决定的。在热点周围的适当半径内的Q矩阵被平均，并以加权的方式加到全局Q矩阵上。在更新全局Q矩阵之后，创建一个新的最优RF脉冲。可以重复一个或多个步骤以将SAR收敛到最小。

8. 发明申请

WO2013035003A1 MR RECEIVE COIL PLATFORM WITH SELECTIVE ENGAGEMENT BETWEEN RECEIVE COIL AND PATIENT TABLE TOP 审中-公开
标题翻译：接收线圈和患者台面之间选择性接合的接收线圈平台
公开(公告)号：WO2013035003A1
公开(公告)日：2013-03-14
申请号：PCT/IB2012/054256
申请日：2012-08-23
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HARVEY, Paul Royston
发明人： HARVEY, Paul Royston
IPC分类号： G01R33/34
CPC分类号： G01R33/30 , G01R33/34007 , G01R33/36 , G01R33/48
摘要： A subject support (22) of a magnetic resonance (MR) system (10) includes a table top (20) supported by a support structure (24) and configured to move in and out of an examination volume (14). The subject support (22) further includes a coil connector (34) connected with a local receive coil (32). The coil connector (34) moves between an engaged position in which the coil connector (34) and the local receive coil (32) engage and move with the table top (20) in and out of the examination volume (14) and a disengaged position in which the coil connector (34) and the local receive coil (32) remain stationary out of the examination volume (14) as the table top (20) moves in and out of the examination volume (14).
摘要翻译：磁共振（MR）系统（10）的主体支架（22）包括由支撑结构（24）支撑并被配置为移入和移出检查体积（14）的台面（20）。主体支架（22）还包括与本地接收线圈（32）连接的线圈连接器（34）。线圈连接器（34）在线圈连接器（34）和局部接收线圈（32）接合的接合位置与台面（20）进入和离开检查容积（14）之间移动，并且脱开当台面（20）移动进入检查体积（14）时，线圈连接器（34）和局部接收线圈（32）保持固定在检查体积（14）之外的位置。

9. 发明申请

WO2012117350A1 MAGNETIC RESONANCE USING QUASI-CONTINUOUS RF IRRADIATION 审中-公开
标题翻译：使用准连续射频辐射的磁共振
公开(公告)号：WO2012117350A1
公开(公告)日：2012-09-07
申请号：PCT/IB2012/050929
申请日：2012-02-28
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KEUPP, Jochen , VAN DEN BRINK, Johan Samuel , HARVEY, Paul Royston
发明人： KEUPP, Jochen , VAN DEN BRINK, Johan Samuel , HARVEY, Paul Royston
IPC分类号： G01R33/561 , G01R33/56 , G01R33/36
CPC分类号： G01R33/54 , G01R33/32 , G01R33/34076 , G01R33/3614 , G01R33/5605 , G01R33/5612 , G01R33/5659
摘要： The invention relates to a method of MR imaging of at least a portion of a body (110) of a patient placed in an examination volume of a MR device, the method comprising the steps of: - subjecting the portion of the body (110) to an imaging sequence comprising at least one RF pulse, the RF pulse being transmitted toward the portion of the body (110) via a RF coil arrangement (109) to which RF signals are supplied by two or more RF power amplifiers the RF power amplifiers being activated alternately during the imaging sequence in a time -multiplexed fashion, wherein the imaging sequence requires a RF duty cycle and/or a RF pulse duration exceeding the specification of at least one of the RF power amplifiers; - acquiring MR signals from the portion of the body (110); and - reconstructing a MR image from the acquired MR signals. Moreover, the invention relates to a method of MR spectroscopy involving the alternating use of RF power amplifiers in a time -multiplexed fashion.
摘要翻译：本发明涉及放置在MR装置的检查体积中的患者的身体（110）的至少一部分的MR成像方法，该方法包括以下步骤： - 对身体（110）的部分进行处理，涉及包括至少一个RF脉冲的成像序列，所述RF脉冲经由RF线圈装置（109）朝向身体（110）的部分传输，RF信号由两个或更多个RF功率放大器提供给RF功率放大器在成像序列期间以时间复用方式交替激活，其中成像序列需要超过RF功率放大器中的至少一个的RF占空比和/或RF脉冲持续时间; - 从身体（110）的部分获取MR信号; 以及 - 从所获取的MR信号重建MR图像。此外，本发明涉及涉及以时间复用方式交替使用RF功率放大器的MR光谱的方法。

10. 发明申请

WO2012063162A1 MAGNETIC RESONANCE IMAGING AND RADIOTHERAPY APPARATUS WITH AT LEAST TWO-TRANSMIT-AND RECEIVE CHANNELS 审中-公开
标题翻译：磁共振成像和放射治疗装置与至少两个发射和接收通道
公开(公告)号：WO2012063162A1
公开(公告)日：2012-05-18
申请号：PCT/IB2011/054858
申请日：2011-11-02
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HARVEY, Paul Royston
发明人： HARVEY, Paul Royston
IPC分类号： G01R33/48 , A61N5/10 , A61B5/055
CPC分类号： A61B5/055 , A61B5/0037 , A61B5/0555 , A61N5/1049 , A61N5/1065 , A61N5/1069 , A61N2005/1055 , A61N2005/1056 , G01R33/3806 , G01R33/4808 , G01R33/4812
摘要： A therapeutic apparatus (500, 600) comprising a radiotherapy apparatus (502) for treating a target zone (318, 536) and a magnetic resonance imaging system (510, 532, 44, 602) for acquiring magnetic resonance imaging data (624). The radiotherapy apparatus comprises a radiotherapy source (300, 302, 304, 504) for directing electromagnetic radiation (310, 312, 314, 508) into the target zone. The radiotherapy apparatus is adapted for rotating the radiotherapy source at least partially around the magnetic resonance magnet. The magnetic resonance imaging system further comprises a radio-frequency transceiver (532) adapted for simultaneously acquiring the magnetic resonance data from at least two transmit- and-receive channels (528, 530). The therapeutic apparatus further comprises a processor (614) and a memory(620) containing machine executable instructions (636, 638, 640, 642, 644) for the processor. Execution of the instructions causes the processor to: calibrate(100, 200) the transmit-and-receive channels; acquire (102, 202) the magnetic resonance data; reconstruct (104, 204) a magnetic resonance image (626); register (106, 206) a location (628) of the target zone in the image; and generate (108, 208) radiotherapy control signals (630) using the registered image.
摘要翻译：一种治疗装置（500,600），包括用于治疗目标区域（318,536）的放射治疗装置（502）和用于获取磁共振成像数据（624）的磁共振成像系统（510,532,44,602）。放射治疗装置包括用于将电磁辐射（310,312,314,508）引导到目标区域中的放射治疗源（300,302,304,504）。放射治疗装置适于至少部分地围绕磁共振磁体旋转放射源。磁共振成像系统还包括适于同时从至少两个发射和接收通道（528,530）获取磁共振数据的射频收发器（532）。治疗装置还包括处理器（614）和包含用于处理器的机器可执行指令（636,638,640,642,644）的存储器（620）。执行指令会导致处理器：校准（100,200）发送和接收通道; 获取磁共振数据（102,202）; 重建（104,204）磁共振图像（626）; 寄存器（106,206）图像中的目标区域的位置（628）; 以及使用所述登记图像生成（108,208）放射治疗控制信号（630）。

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