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1. 发明申请

WO2012059845A1 METHOD OF CHARACTERIZING AN RF TRANSMIT CHAIN 审中-公开
标题翻译：表征RF发射链的方法
公开(公告)号：WO2012059845A1
公开(公告)日：2012-05-10
申请号：PCT/IB2011/054771
申请日：2011-10-26
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , VAN DEN BRINK, Johan Samuel , GRAESSLIN, Ingmar , KRUEGER, Sascha , WEISS, Steffen , VERNICKEL, Peter
发明人： VAN DEN BRINK, Johan Samuel , GRAESSLIN, Ingmar , KRUEGER, Sascha , WEISS, Steffen , VERNICKEL, Peter
IPC分类号： G01R33/44
CPC分类号： G01R33/36 , G01R33/246 , G01R33/44 , G01R33/5612 , G01R33/583
摘要： The invention relates to a method of characterizing the RF transmit chain of a magnetic resonance imaging scanner (1) using -a local transmit/receive coil system (204; 210), comprising a first local NMR probe and a first local magnetic resonance coil, the first NMR probe being spatially located in immediate neighborhood to the first coil, -a local receive coil system (206; 208), comprising a second local NMR probe and a second local magnetic resonance coil, the second NMR probe being spatially located in immediate neighborhood to the second coil, wherein the transmit chain comprises an external MR coil (9; 11; 12; 13), the method comprising: -determining with the first magnetic resonance coil, a first MR signal phase evolution of the local RF transmit field generated by MR excitation of the first probe using the first magnetic resonance coil by measuring the RF response of the first probe upon said excitation, -determining with the second magnetic resonance coil a second MR signal phase evolution of the local RF transmit field generated by MR excitation of the second probe using the external MR coil (9; 11; 12; 13) by measuring the RF response of the second probe upon said excitation, - calculating a phase offset between the first and second MR signal phase evolution.
摘要翻译：本发明涉及一种使用本地发射/接收线圈系统（204; 210）来表征磁共振成像扫描仪（1）的RF发射链的方法，该系统包括第一局部NMR探针和第一局部磁共振线圈，空间上位于第一线圈附近的第一NMR探针 - 局部接收线圈系统（206; 208），包括第二局部NMR探针和第二局部磁共振线圈，所述第二NMR探针在空间上位于立即邻近于所述第二线圈，其中所述发射链包括外部MR线圈（9; 11; 12; 13），所述方法包括： - 利用所述第一磁共振线圈确定所述本地RF发射场的第一MR信号相位演变通过在所述激发时测量第一探针的RF响应，使用第一磁共振线圈通过MR激发而产生的第一探针， - 用第二磁共振线圈确定第二MR信号phas 使用外部MR线圈（9; 9）的第二探针的MR激发产生的局部RF发射场的演变。 11; 12; 13）通过在所述激励时测量第二探针的RF响应， - 计算第一和第二MR信号相位演化之间的相位偏移。

2. 发明申请

WO2010113121A1 MAGNETIC RESONANCE SYSTEM AND METHOD FOR COMPREHENSIVE IMPLANTABLE DEVICE SAFETY TESTS AND PATIENT SAFETY MONITORING 审中-公开
标题翻译：磁共振系统及全面可植入装置安全测试方法及患者安全监察
公开(公告)号：WO2010113121A1
公开(公告)日：2010-10-07
申请号：PCT/IB2010/051398
申请日：2010-03-31
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , GRAESSLIN, Ingmar , KRUEGER, Sascha
发明人： GRAESSLIN, Ingmar , KRUEGER, Sascha
IPC分类号： G01R33/28
CPC分类号： G01R33/285 , G01R33/288
摘要： A magnetic resonance method comprises: performing (C1) a magnetic resonance procedure on a calibration subject including an implant device; detecting (C2) a pick-up coil (PUC) signal at least during a radio frequency transmit phase of operation (C1); performing (C3) three dimensional temperature mapping of the calibration subject using a magnetic resonance sequence configured to detect any temperature change induced in any part of the implant device by operation (C1); generating (C4) an unsafe condition criterion (30) for the detected PUC signal based on correlating a PUC signal characteristic detected by operation (C2) with a temperature change detected by operation (C3); performing (M5) the magnetic resonance procedure on a subject containing an implant device; detecting (M6) a PUC signal at least during a radio frequency transmit phase of operation (M5); and monitoring (M7) for an unsafe condition indicated by the PUC signal detected in operation (M6) satisfying the unsafe condition criterion (30).
摘要翻译：磁共振方法包括：在包括植入装置的校准对象上执行（C1）磁共振程序; 至少在射频发射阶段（C1）期间检测（C2）拾波线圈（PUC）信号; 使用构造成通过操作（C1）检测在植入装置的任何部分中诱导的任何温度变化的磁共振序列来执行（C3）校准对象的三维温度映射; 基于通过操作（C2）检测到的PUC信号特性与由操作（C3）检测到的温度变化相关联，生成（C4）用于检测到的PUC信号的不安全条件标准（30）。对包含植入装置的受试者执行（M5）磁共振程序; 至少在射频发射阶段（M5）期间检测（M6）PUC信号; 以及对满足不安全条件标准（30）的在操作中检测到的PUC信号（M6）指示的不安全状态进行监视（M7）。

3. 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。

4. 发明申请

WO2007049166A1 ACTIVE DECOUPLING OF TRANSMITTERS IN MRI 审中-公开
标题翻译： MRI中发射机的主动解码
公开(公告)号：WO2007049166A1
公开(公告)日：2007-05-03
申请号：PCT/IB2006/053615
申请日：2006-10-03
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , U.S. PHILIPS CORPORATION , VERNICKEL, Peter , GRAESSLIN, Ingmar
发明人： VERNICKEL, Peter , GRAESSLIN, Ingmar
IPC分类号： G01R33/36
CPC分类号： G01R33/365
摘要： A magnetic resonance imaging system includes a coupling compensation processor (70) for compensating induced magnetic coupling between n individual coil segments (38) of a coil arrangement (36). An adjusted signal determining device (74) determines an adjusted input signal for each of the n individual coil segments of the coil arrangement (36). A transmitting system (54) creates RF pulses in accordance with the determined adjusted input signals and transmits the RF pulses to corresponding coil segments such that the transmitted RF pulses compensate for coupling between the coil segments (38) in the digital domain.
摘要翻译：磁共振成像系统包括用于补偿线圈装置（36）的n个单独线圈段（38）之间的感应磁耦合的耦合补偿处理器（70）。调整信号确定装置（74）确定线圈装置（36）的n个单独线圈段中的每一个的经调整的输入信号。发射系统（54）根据确定的调整的输入信号产生RF脉冲，并将RF脉冲发送到相应的线圈段，使得发送的RF脉冲补偿数字域中的线圈段（38）之间的耦合。

5. 发明申请

WO2005124380A2 FLEXIBLE AND WEARABLE RADIO FREQUENCY COIL GARMENTS FOR MAGNETIC RESONANCE IMAGING 审中-公开
标题翻译：用于磁共振成像的柔性和耐磨无线电频率线圈
公开(公告)号：WO2005124380A2
公开(公告)日：2005-12-29
申请号：PCT/IB2005051806
申请日：2005-06-02
申请人： KONINKL PHILIPS ELECTRONICS NV , LEUSSLER CHRISTOPH G , GRAESSLIN INGMAR , BUURMAN HANS , CARLON JOHN T
发明人： LEUSSLER CHRISTOPH G , GRAESSLIN INGMAR , BUURMAN HANS , CARLON JOHN T
IPC分类号： G01R33/34 , G01R33/3415
CPC分类号： G01R33/3415 , G01R33/34007 , G01R33/34084
摘要： A radio frequency apparatus for at least one of (i) receiving and (ii) exciting a magnetic resonance signal includes an item of clothing (102, 202). The item of clothing includes one or more layers (110, 112, 120, 122, 300, 402) that are stretchable to comport with differently sized and shaped imaging subjects. A plurality of radio frequency coils (104, 114, 204, 206, 208, 302, 404) are attached to one or more layers of the item of clothing. The coils are relatively movable with respect to one another responsive to stretching of the stretchable item of clothing. The one or more layers of the item of clothing include an anti-microbial agent (92, 92', 94') disposed on or incorporated into at least one layer.
摘要翻译：用于（i）接收和（ii）激励磁共振信号中的至少一个的射频装置包括服装物品（102,202）。衣物包括一个或多个可伸缩的层（110,112,120,122,300,402），以与不同大小和形状的成像对象相匹配。多个射频线圈（104,114,204,206,208,302,404）附接到该衣物项的一层或多层。线圈可以相对于彼此相对移动，以响应于可拉伸物品的拉伸。服装项目的一层或多层包括设置在或并入至少一层中的抗微生物剂（92,92'，94'）。

6. 发明申请

WO2005008269A1 EFFICIENT MAPPING OF RECONSTRUCTION ALGORITHMS FOR MAGNETIC RESONANCE IMAGING ONTO A RECONFIGURABLE RECONSTRUCTION SYSTEM 审中-公开
标题翻译：用于磁共振成像的可重构重建系统的重建算法的有效映射
公开(公告)号：WO2005008269A1
公开(公告)日：2005-01-27
申请号：PCT/IB2004/002331
申请日：2004-07-16
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , U.S. PHILIPS CORPORATION , GRAESSLIN, Ingmar , EGGERS, Holger
发明人： GRAESSLIN, Ingmar , EGGERS, Holger
IPC分类号： G01R33/561
CPC分类号： G01R33/3621 , G01R33/3415 , G01R33/54 , G01R33/5608
摘要： A magnetic resonance (MR) system (10) includes radiofrequency (RF) transmitters (34) which send RF pulses into an examination region (14) to excite a spin system to be imaged. Coil elements (20, 24, 28) pick up an MR signal, which is demodulated and converted into digital data by RF receivers (36). A plurality of independent parallel processing channels (42 1 , 42 2 , …, 42 n ) is operatively connected to the RF receivers to reconstruct images from the digital data. The parallel processing channels (42 1 , 42 2 , …, 42 n ) include one or more pipeline stages (54 1 , 54 2 , …, 54 m ). Processing channels and pipeline stages include a plurality of processing or reconstruction units (52). Processing tasks are dynamically allocated to these processing or reconstruction units on a per scan basis using a single general strategy for mapping processing tasks to hardware resources. The connections (56) between the processing or reconstruction units (52) are reconfigured using a switching means (60). In this manner, different numbers of coil elements (20, 24, 28) can be connected with matching numbers of processing channels (42 1 , 42 2 , …, 42 n ) to exploit available processing resources optimally.
摘要翻译：磁共振（MR）系统（10）包括射频（RF）发射器（34），其将RF脉冲发送到检查区域（14）中以激发要成像的旋转系统。线圈元件（20,24,28）拾取MR信号，其由RF接收器（36）解调并转换成数字数据。多个独立的并行处理通道（421,422，...，42n）可操作地连接到RF接收器以从数字数据重建图像。并行处理通道（421,422，...，42n）包括一个或多个流水线级（541,542，...，54m）。处理通道和流水线级包括多个处理或重建单元（52）。使用用于将处理任务映射到硬件资源的单一一般策略，每个扫描基础上将处理任务动态地分配给这些处理或重建单元。使用切换装置（60）重新配置处理或重构单元（52）之间的连接（56）。以这种方式，不同数量的线圈元件（20,24,28）可以与匹配数量的处理通道（421,422，...，42n）连接，以最佳地利用可用的处理资源。

7. 发明申请

WO2013024449A1 REDUCING THE RADIO-FREQUENCY TRANSMIT FIELD IN A PREDETERMINED VOLUME DURING MAGNETIC RESONANCE IMAGING 审中-公开
标题翻译：在磁共振成像期间减少预测体积中的无线电频率发射
公开(公告)号：WO2013024449A1
公开(公告)日：2013-02-21
申请号：PCT/IB2012/054163
申请日：2012-08-15
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , HOMANN, Hanno Heyke , GRAESSLIN, Ingmar , KATSCHER, Ulrich , VOIGT, Tobias Ratko , DÖSSEL, Olaf Helmut , SEITZ, Sebastian Alfred
发明人： HOMANN, Hanno Heyke , GRAESSLIN, Ingmar , KATSCHER, Ulrich , VOIGT, Tobias Ratko , DÖSSEL, Olaf Helmut , SEITZ, Sebastian Alfred
IPC分类号： G01R33/561 , G01R33/28
CPC分类号： G01R33/36 , G01R33/285 , G01R33/288 , G01R33/5612
摘要： Embodiments of the invention relate to a magnetic resonance imaging system (300) for acquiring magnetic resonance data (358) from a subject (318) that may comprise an electrically conductive object (e.g. an implant or a medical device). The magnetic resonance imaging system comprises a radio-frequency transmitter (314) for generating a radio-frequency transmit field for acquiring the magnetic resonance data using a radio-frequency antenna (310). The radio-frequency transmitter has multiple transmit channels. The radio-frequency antenna comprises multiple antenna elements (312) each adapted to connect to an antenna element. According to an embodiment of the invention, the amplitude and phase values of the RF transmit field of each of the transmit channels are selected such that the magnetic field generated by the RF antenna is minimized at the location of the electrically conductive object, thereby reducing RF heating of the object.
摘要翻译：本发明的实施例涉及一种用于从可包括导电物体（例如，植入物或医疗装置）的被摄体（318）获取磁共振数据（358）的磁共振成像系统（300）。磁共振成像系统包括用于使用射频天线（310）产生用于获取磁共振数据的射频发射场的射频发射机（314）。射频发射机具有多个发射信道。射频天线包括各自适于连接到天线元件的多个天线元件（312）。根据本发明的实施例，选择每个发射信道的RF发射场的幅度和相位值，使得由RF天线产生的磁场在导电物体的位置处最小化，从而减少RF 加热物体。

8. 发明申请

WO2011030245A1 MOTION MONITORING SYSTEM FOR MONITORING MOTION WITHIN A REGION OF INTEREST 审中-公开
标题翻译：运动监测系统，用于监测运动区域内的运动
公开(公告)号：WO2011030245A1
公开(公告)日：2011-03-17
申请号：PCT/IB2010/053681
申请日：2010-08-16
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KATSCHER, Ulrich , BOERNERT, Peter , STEHNING, Christian , GRAESSLIN, Ingmar
发明人： KATSCHER, Ulrich , BOERNERT, Peter , STEHNING, Christian , GRAESSLIN, Ingmar
IPC分类号： G06T7/20
CPC分类号： G06T7/246 , G06T2207/10072 , G06T2207/30048
摘要： The invention relates to a motion monitoring system (1) for monitoring motion within a region of interest(2). The motion monitoring system (1) comprises a magnetic induction tomography detection data acquisition unit (3) for acquiring MIT detection data of the region of interest(2), and a motion determining unit (4) for determining motion within the region of interest (2) based on the acquired MIT detection data. The invention relates further to an imaging system for imaging a region of interest comprising the motion monitoring system (1). The determined motion can be used for reducing motion artifacts in reconstructed images.
摘要翻译：本发明涉及一种用于监视感兴趣区域（2）内的运动的运动监视系统（1）。运动监视系统（1）包括用于获取感兴趣区域（2）的MIT检测数据的磁感应断层摄影检测数据获取单元（3）和用于确定感兴趣区域内的运动的运动确定单元（4） 2）基于所获得的MIT检测数据。本发明进一步涉及用于对包括运动监视系统（1）的兴趣区域进行成像的成像系统。所确定的运动可用于减少重建图像中的运动伪影。

9. 发明申请

WO2010032172A1 B1-MAPPING AND B1L-SHIMMING FOR MRI 审中-公开
标题翻译：用于MRI的B1映射和B1L-SHIMMING
公开(公告)号：WO2010032172A1
公开(公告)日：2010-03-25
申请号：PCT/IB2009/053956
申请日：2009-09-10
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , BOERNERT, Peter , KOKEN, Peter , NEHRKE, Kay , KATSCHER, Ulrich , GRAESSLIN, Ingmar
发明人： BOERNERT, Peter , KOKEN, Peter , NEHRKE, Kay , KATSCHER, Ulrich , GRAESSLIN, Ingmar
IPC分类号： G01R33/3415 , G01R33/58
CPC分类号： G01R33/583 , G01R33/246 , G01R33/3415 , G01R33/4838 , G01R33/5612 , G01R33/5659 , G01R33/586
摘要： The invention relates to a method of acquiring MRI image data comprising the following steps: performing a 3 -dimensional Bl mapping of a first volume using a first voxel size, selecting an MRI protocol, performing the Bl -shim in accordance with the MRI protocol, performing the MRI protocol to acquire MRI imaging data of a second volume using a second voxel size, wherein the first voxel size is larger than the second voxel size, wherein the first volume is larger than the second volume, and wherein the second volume is contained within the first volume.
摘要翻译：本发明涉及一种获取MRI图像数据的方法，包括以下步骤：使用第一体素大小执行第一体积的3维B1映射，选择MRI协议，根据MRI协议执行Bl-shim，执行MRI协议以使用第二体素尺寸获取第二体积的MRI成像数据，其中所述第一体素大小大于所述第二体素大小，其中所述第一体积大于所述第二体积，并且其中所述第二体积被包含在第一卷内。

10. 发明申请

WO2006137026A2 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：WO2006137026A2
公开(公告)日：2006-12-28
申请号：PCT/IB2006/052003
申请日：2006-06-21
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , HARVEY, Paul, R. , GRAESSLIN, Ingmar , LEUSSLER, Christoph
发明人： HARVEY, Paul, R. , GRAESSLIN, Ingmar , LEUSSLER, Christoph
IPC分类号： G01R33/36 , G01R33/3415
CPC分类号： G01R33/3415 , G01R33/3635
摘要： The invention relates to an MR device (1) for magnetic resonance imaging of a body (14) placed in an examination volume (7), the device (1) comprising a main magnet (2) for generating a stationary and substantially homogeneous main magnetic field in the examination volume (7), and an RF coil arrangement for generating RF fields in the examination volume (7) and/or for receiving MR signals from the body (14). In order to provide such an MR device, which is arranged to operate at the resonance (Larmor) frequencies of two or more different nuclear species at the same time, the invention suggests that the RF coil arrangement comprises a plurality of independent resonator elements (8, 9, 10, 11, 12, 13) which are adjacently arranged in or near the examination volume (7), wherein adjacent resonator elements (8, 9, 10, 11, 12, 13) are alternately tuned to one of two or more different MR resonance frequencies, and wherein each resonator element (8, 9, 10, 11, 12, 13) is associated with a separate signal transmission (16) and/or signal reception channel (17) of the MR device (1)
摘要翻译：本发明涉及用于放置在检查体积（7）中的体（14）的磁共振成像的MR装置（1），所述装置（1）包括主磁体（2），用于产生静止且基本均匀的主磁在检查体积（7）中的场和用于在检查体积（7）中产生RF场和/或用于从身体（14）接收MR信号的RF线圈装置。为了提供这样的MR器件，其被布置为在同时在两个或更多个不同核物质的共振（Larmor）频率下操作，本发明提出RF线圈装置包括多个独立的谐振元件（8 ，9,10,11,12,13），其相邻地布置在检查体积（7）中或附近，其中相邻的谐振器元件（8,9,10,11,12,13）交替地被调谐到两个或更多不同的MR谐振频率，并且其中每个谐振器元件（8,9,10,11,12,13）与MR装置（1）的单独信号传输（16）和/或信号接收通道（17）相关联，

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