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21. 发明申请

WO2004077086A1 MOVING TABLE MRI WITH SUBSAMPLING 审中-公开
标题翻译：移动表MRI与附加
公开(公告)号：WO2004077086A1
公开(公告)日：2004-09-10
申请号：PCT/IB2004/050131
申请日：2004-02-18
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , FUDERER, Miha , HARVEY, Paul, R. , VAN DEN BRINK, Johan, S.
发明人： FUDERER, Miha , HARVEY, Paul, R. , VAN DEN BRINK, Johan, S.
IPC分类号： G01R33/563
CPC分类号： G01R33/56375 , G01R33/5611
摘要： A novel magnetic resonance imaging method is described, for forming an image of an object from a plurality of signals sampled in a restricted homogeneity region of a main magnet field of a magnetic resonance imaging apparatus. A patient disposed on a table is moved continuously through the bore of the main magnet and spins in a predetermined area of the patient are excited by an excitation pulse from a transmitter antenna, such that an image is formed over a region exceeding largely the restricted region. Data is undersampled in the restricted region by means off at least one receiver antenna in a plurality of receive situations being defined as a block of measurements contiguous in time having preserved magnetisation and presaturation conditions within the excited area of the patient. Fold-over artefacts due to said undersampling are unfolded by means of the known sensitivity pattern of the receiver antenna and/or the properties of selected factors determining said receive situations.
摘要翻译：描述了一种新颖的磁共振成像方法，用于从在磁共振成像装置的主磁场的受限同质区域中采样的多个信号形成物体的图像。设置在桌子上的患者连续移动通过主磁体的孔并且在患者的预定区域中的旋转被来自发射器天线的激励脉冲激发，使得在超过大部分限制区域的区域上形成图像。通过在多个接收情况中的至少一个接收机天线被限定为在时间上相邻的测量块，其在患者的激动区域内保持磁化和预饱和状态，在受限区域中数据被欠采样。由于所述欠采样引起的折叠伪影通过接收机天线的已知灵敏度图案和/或确定所述接收情况的选定因素的特性而展开。

22. 发明申请

WO2004065976A1 SUB-SAMPLED MOVING TABLE MRI 审中-公开
标题翻译：子采样移动表MRI
公开(公告)号：WO2004065976A1
公开(公告)日：2004-08-05
申请号：PCT/IB2003/006078
申请日：2003-12-10
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HARVEY, Paul, R.
发明人： HARVEY, Paul, R.
IPC分类号： G01R33/563
CPC分类号： G01R33/56518 , G01R33/5611 , G01R33/56375
摘要： A magnetic resonance method is described for forming a dynamic image from a plurality of signals of an object moving relative to at least one RF` receiving antenna. Imaging is acquired by at least two adjacent fields of view (FOV), which are reconstructed to an image over a region of interest which includes both FOVs. Prior to imaging a sensitivity map of the at least one RF receiving antenna at each position relative to the object is determined for each FOV. Thereafter data from the object to be imaged is sampled for each FOV with a reduced number of phase encoding steps with respect to the full set thereof at a fixed position relative to the main magnetic field. The image is then reconstructed from the subsampled signals, which are weighted with the sensitivity factor of the RF receiving antenna at the respective imaging position.
摘要翻译：描述了从相对于至少一个RF接收天线移动的物体的多个信号中形成动态图像的磁共振方法。通过至少两个相邻视场（FOV）获取成像，其被重建为包括两个FOV的感兴趣区域上的图像。在成像之前，针对每个FOV确定相对于物体的每个位置处的至少一个RF接收天线的灵敏度图。此后，对于每个FOV，对于相对于其全部集合的相对编码步骤的相对于主磁场的固定位置的数量相对于每个FOV进行数据的采样。然后从子采样信号重建图像，该二次采样信号在相应成像位置处用RF接收天线的灵敏度因子加权。

23. 发明申请

WO2008075265A1 MOTION CORRECTION IN A PET/MRI HYBRID IMAGING SYSTEM 审中-公开
标题翻译： PET / MRI混合成像系统中的运动校正
公开(公告)号：WO2008075265A1
公开(公告)日：2008-06-26
申请号：PCT/IB2007/055080
申请日：2007-12-13
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HARVEY, Paul, R.
发明人： HARVEY, Paul, R.
IPC分类号： G01R33/567 , G01R33/565
CPC分类号： G01R33/56509 , G01R33/481
摘要： A diagnostic imaging arrangement comprises a magnetic resonance examination (1) system to acquire magnetic resonance signals and an emission tomography system (2) to acquire nuclear decay signals. An analysis module (4) is provided to derive motion correction(s) from the magnetic resonance signals. A reconstruction module (5) reconstructs a motion corrected emission tomographic image from the nuclear decay signals on the basis of the motion correction. Also a therapeutic arrangement is disclosed with a diagnostic imaging arrangement and a therapy module, with a system controller is further coupled to the therapy module and has the function to control the therapy module on the basis of image information generated by the diagnostic imaging system.
摘要翻译：诊断成像装置包括用于获取磁共振信号的磁共振检查（1）系统和用于获取核衰变信号的发射断层摄影系统（2）。提供分析模块（4）以从磁共振信号导出运动校正。重建模块（5）基于运动校正从核衰减信号重建运动校正的发射断层图像。还公开了具有诊断成像装置和治疗模块的治疗装置，系统控制器进一步耦合到治疗模块，并且具有基于由诊断成像系统生成的图像信息来控制治疗模块的功能。

24. 发明申请

WO2008023314A2 METHOD AND DEVICE FOR OBTAINING INFORMATION ABOUT A MAMMALIAN BODY 审中-公开
标题翻译：用于获得哺乳动物身体信息的方法和装置
公开(公告)号：WO2008023314A2
公开(公告)日：2008-02-28
申请号：PCT/IB2007/053290
申请日：2007-08-17
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PANANAKIS, Dimitrios , HARVEY, Paul, R.
发明人： PANANAKIS, Dimitrios , HARVEY, Paul, R.
IPC分类号： A61B5/00 , A61N1/00
CPC分类号： A61N1/403 , A61B5/015 , A61B5/055 , G01R33/4804
摘要： This invention relates to a device for retrieving information about one or more states of a mammalian body comprising: (a) a magnetic resonance imaging device comprising a first set of one or more radio-frequency coils for measuring the body temperature Ti at a selected location of a mammalian body, (b) a local heating means including a second set of one or more radio-frequency coils, said second set comprising at least two channels for delivering focused radio frequency energy to said selected location of said mammalian body and raising the temperature Ti thereof, and (c) means for modulating said radio-frequency energy delivered by said second set of coils as a function of said temperature Ti in order to reach and maintain a predefined temperature Tp above the normal mammalian body temperature Tb.
摘要翻译：本发明涉及一种用于检索关于哺乳动物身体的一种或多种状态的信息的设备，包括：（a）磁共振成像设备，其包括用于测量哺乳动物身体的一个或多个状态的第一组一个或多个射频线圈（b）包括第二组一个或多个射频线圈的局部加热装置，所述第二组包括至少两个通道，用于将聚焦射频能量传送到所述选定位置以及（c）用于调制由所述第二组线圈输送的所述射频能量作为所述温度T i的函数的装置，以便达到并保持高于所述哺乳动物体的温度T 1的预定温度T p 正常哺乳动物体温Tb。

25. 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，

26. 发明申请

WO2006003580A1 MAGNETIC RESONANCE IMAGING DEVICE AND METHOD FOR OPERATING A MAGNETIC RESONANCE IMAGING DEVICE 审中-公开
标题翻译：磁共振成像装置和操作磁共振成像装置的方法
公开(公告)号：WO2006003580A1
公开(公告)日：2006-01-12
申请号：PCT/IB2005/052097
申请日：2005-06-24
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HARVEY, Paul, R. , PEEREN, Gerardus, N.
发明人： HARVEY, Paul, R. , PEEREN, Gerardus, N.
IPC分类号： G01R33/385
CPC分类号： G01R33/385
摘要： The present invention relates to a magnetic resonance imaging (MRI) device and to a method for operating it. The basic components of an MRI device are the main magnet system (2) for generating a steady magnetic field, the gradient system (3) with at least one gradient coil, the RF system and the signal processing system. According to the present invention, the gradient coil is split into sub-coils (S1, S2) at least in the direction of the steady magnetic field. By doing so, the amplitude of the non-imaging component of the gradient field in the vicinity of the patient is reduced, leading to reduced peripheral nerve stimulation and thus enhanced image quality.
摘要翻译：本发明涉及一种磁共振成像（MRI）装置及其操作方法。 MRI装置的基本部件是用于产生稳定磁场的主磁体系统（2），具有至少一个梯度线圈的梯度系统（3），RF系统和信号处理系统。根据本发明，梯度线圈至少在稳定磁场的方向上分成子线圈（S1，S2）。通过这样做，患者附近的梯度场的非成像成分的振幅减小，导致周围神经刺激减弱，从而提高图像质量。

27. 发明申请

WO2005088328A2 ALL IN ONE PLAN SCAN IMAGING FOR OPTIMIZATION OF ACQUISITION PARAMETERS 审中-公开
标题翻译：所有在一个计划扫描成像优化采集参数
公开(公告)号：WO2005088328A2
公开(公告)日：2005-09-22
申请号：PCT/IB2005/050681
申请日：2005-02-24
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HARVEY, Paul, R. , KRUGER, Luc, R. , SLEGT, Sander
发明人： HARVEY, Paul, R. , KRUGER, Luc, R. , SLEGT, Sander
IPC分类号： G01R33/20
CPC分类号： G01R33/543 , G01R33/546 , G01R33/56375
摘要： The present invention provides a magnetic resonance imaging system making use of low resolution, whole-body plan scan image of a body. The whole-body plan scan image is exploited to gather a plurality of individual information of a body that is essential for an optimization of acquisition parameter for acquisition of a high resolution and high quality image of a region of interest of the body. Moreover, the whole-body plan scan image is used in order to facility a determination and a selection of a region of interest to be performed by an operator. Additionally, the MRI provides effective means for autonomously identifying specific body parts or even organs of a patient. Providing the entire information that can be extracted from the whole-body plan scan image to the operator effectively simplifies the workflow of the operator in an intuitive way. Preferably, during acquisition of the low resolution whole-body plan scan image, necessary calibration parameters for acquisition of the final high resolution image are obtained.
摘要翻译：本发明提供使用身体的低分辨率，全身平面扫描图像的磁共振成像系统。全身计划扫描图像被利用来收集身体的多个个体信息，该身体对于获取身体的感兴趣区域的高分辨率和高质量图像的获取参数的优化是必不可少的。此外，使用全身平面扫描图像来进行由操作者执行的感兴趣区域的确定和选择。此外，MRI提供了用于自主识别患者的特定身体部位甚至器官的有效手段。将能够从全身计划扫描图像提取的全部信息提供给操作者有效地以直观的方式简化了操作者的工作流程。优选地，在获取低分辨率全身平面扫描图像期间，获得用于获取最终高分辨率图像的必要的校准参数。

28. 发明申请

WO2005003802A1 A METHOD OF MONITORING A MAGNETIC FIELD DRIFT OF A MAGNETIC RESONANCE IMAGING APPARATUS 审中-公开
标题翻译：监测磁共振成像装置的磁场的方法
公开(公告)号：WO2005003802A1
公开(公告)日：2005-01-13
申请号：PCT/IB2004/051102
申请日：2004-07-02
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HARVEY, Paul, R.
发明人： HARVEY, Paul, R.
IPC分类号： G01R33/389
CPC分类号： G01R33/389 , G01R33/56563
摘要： The invention enables to monitor a magnetic field drift of a magnetic resonance imaging apparatus on the basis of the magnetic resonance signals, which are acquired during magnetic resonance image data acquisition, such as by single shot EPI or by a gradient echo sequence. The phases of at least two magnetic resonance signals are acquired an echo time after the corresponding RF excitations. This corresponds to the central k-space line, which has frequency encoding but no phase encoding. The difference of two consecutive phase measurements, which are acquired at a certain time interval provides the shift of the resonance frequency. This enables monitoring of the shift of the resonance frequency and compensation of the magnetic field drift.
摘要翻译：本发明能够基于在磁共振图像数据采集期间例如通过单次EPI或梯度回波序列获取的磁共振信号来监测磁共振成像装置的磁场漂移。在相应的RF激励之后获取至少两个磁共振信号的相位。这对应于具有频率编码但没有相位编码的中心k空间线。在一定时间间隔获得的两个连续相位测量的差异提供了共振频率的偏移。这使得能够监测谐振频率的偏移和磁场漂移的补偿。

29. 发明申请

WO2004046744A1 MRI SYSTEM HAVING A GRADIENT MAGNET SYSTEM WITH A BALANCE MEMBER 审中-公开
标题翻译：具有平衡成员的梯度磁体系统的MRI系统
公开(公告)号：WO2004046744A1
公开(公告)日：2004-06-03
申请号：PCT/IB2003/004816
申请日：2003-10-27
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , ROOZEN, Nicolaas, B. , HAM, Cornelis, L., G. , HARVEY, Paul, R. , LIMPENS, Patrick, W., P.
发明人： ROOZEN, Nicolaas, B. , HAM, Cornelis, L., G. , HARVEY, Paul, R. , LIMPENS, Patrick, W., P.
IPC分类号： G01R33/385
CPC分类号： G01R33/3854
摘要： The invention relates to a magnetic resonance imaging (MRI) system (1) comprising an examination volume (11), a main magnet system (13) for generating a main magnetic field (B 0 ) in the examination volume in a Z-direction, a gradient magnet system (19) for generating gradients of the main magnetic field, and an anti-vibration system (33) for reducing vibrations of the gradient magnet system caused by a mechanical load (M X , M Y ) exerted on the gradient magnet system as a result of electromagnetic interaction between the main magnetic field and electrical currents in the gradient magnet system. According to the invention the anti-vibration system (33) comprises a balance member (39), which is coupled to the gradient magnet system (19) by means of an actuator system (51) and a coupling device (49) allowing displacements of the balance member relative to the gradient magnet system. The MRI system (1) also has a control system (81) which controls the actuator system in such a manner that the actuator system exerts upon the balance member a compensating mechanical load (M CX , M CY ) which substantially corresponds to the mechanical load (M X , M Y ) exerted on the gradient magnet system. As a result, the actuator system exerts a mechanical reaction load (M RX , M RY ) on the gradient magnet system which has the same magnitude as but is oppositely directed to the mechanical load (M X , M Y ) exerted on the gradient magnet system, so that vibrations of the gradient magnet system are effectively limited.
摘要翻译：本发明涉及一种磁共振成像（MRI）系统（1），包括检查体积（11），主磁体系统（13），用于在Z轴中产生检查体积中的主磁场（B> 0 < 方向，用于产生主磁场梯度的梯度磁体系统（19）和用于减少由机械载荷引起的梯度磁体系统振动的防振系统（33）（M> X < ）作为梯度磁体系统中的主磁场和电流之间的电磁相互作用的结果施加在梯度磁体系统上。根据本发明，防振系统（33）包括平衡构件（39），其通过致动器系统（51）和耦合装置（49）耦合到梯度磁体系统（19），耦合装置（49）允许位移平衡构件相对于梯度磁体系统。 MRI系统（1）还具有控制系统（81），该控制系统（81）控制致动器系统，使得致动器系统在平衡构件上施加补偿机械载荷（M> CX <，M> CY < 到施加在梯度磁体系统上的机械载荷（M> X <，M> Y <）。因此，致动器系统在梯度磁体系统上施加机械反作用力（M> RX <，M> RY <），其具有与机械载荷相同而相反的机械载荷（M> X，M> Y <）施加在梯度磁体系上，从而有效地限制了梯度磁体系的振动。

30. 发明申请

WO2004027443A1 A METHOD OF CYCLIC MAGNETIC RESONANCE IMAGING 审中-公开
标题翻译：循环磁共振成像的方法
公开(公告)号：WO2004027443A1
公开(公告)日：2004-04-01
申请号：PCT/IB2003/003542
申请日：2003-08-08
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HARVEY, Paul, R.
发明人： HARVEY, Paul, R.
IPC分类号： G01R33/54
CPC分类号： G01R33/54
摘要： The invention provides a method and a magnetic resonance imaging apparatus where cyclic image data acquisition is performed while the patient is continuously moved through the imaging volume provided by the magnetic field. The volume to be imaged is subdivided into sub-volumes. Image data acquisitions are sequentially performed for the sub-volumes. The data acquisition for a given sub-volume is performed by true three-dimensional imaging or by a multi slice imaging method where the sub-volume contains a stack of two-dimensional slices. The sub-volume for which image data acquisition is performed is moved through the magnetic field together with the patient. When the image data acquisition for the sub-volume has been completed, the next image data acquisition starts for the subsequent sub-volume.
摘要翻译：本发明提供了一种方法和磁共振成像装置，其中当患者连续移动通过由磁场提供的成像体积时执行循环图像数据采集。要成像的体积被细分为子体积。顺序对子卷执行图像数据采集。给定子体积的数据采集是通过真正的三维成像或通过多层成像方法进行的，其中子体积包含二维切片的堆叠。执行图像数据采集的子体积与患者一起移动通过磁场。当子卷的图像数据采集已经完成时，对于后续的子卷开始下一图像数据采集。

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