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1. 发明申请

WO2006095297A1 ULTRA-SHORT MRI BODY COIL 审中-公开
标题翻译：超短暂的MRI身体线圈
公开(公告)号：WO2006095297A1
公开(公告)日：2006-09-14
申请号：PCT/IB2006/050679
申请日：2006-03-03
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HARVEY, Paul, R. , HOLLE, Eerke , ZHAI, Zhiyong
发明人： HARVEY, Paul, R. , HOLLE, Eerke , ZHAI, Zhiyong
IPC分类号： G01R33/3415
CPC分类号： G01R33/34046 , G01R33/3415
摘要： A magnetic resonance imaging system (10) utilizes an ultra-short RF body coil (36). The ultra-short body coil (36) is shorter than the mechanical equivalent birdcage coil by at least a factor of two. Such coil provides equivalent (B 1 ) magnetic field uniformity, while conforming to SAR limitations.
摘要翻译：磁共振成像系统（10）利用超短RF体线圈（36）。超短体线圈（36）比机械等效鸟笼线圈短至少两倍。这种线圈在符合SAR限制的同时提供等效的（B 1 SUB）磁场均匀性。

2. 发明申请

WO2007124245A1 MAGNETIC RESONANCE WITH TIME SEQUENTIAL SPIN EXCITATION 审中-公开
标题翻译：具有时间顺序旋转激励的磁共振
公开(公告)号：WO2007124245A1
公开(公告)日：2007-11-01
申请号：PCT/US2007/065841
申请日：2007-04-03
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , ZHAI, Zhiyong , DEMEESTER, Gordon, D. , MORICH, Michael, A. , HARVEY, Paul, R.
发明人： ZHAI, Zhiyong , DEMEESTER, Gordon, D. , MORICH, Michael, A. , HARVEY, Paul, R.
IPC分类号： G01R33/32
CPC分类号： G01R33/5659 , G01R33/246 , G01R33/3415
摘要： In a magnetic resonance scanner, a main magnet (20, 22) generates a static magnetic field at least in an examination region. A magnetic field gradient system (30, 54) selectively superimposes magnetic field gradients on the static magnetic field at least in the examination region. A magnetic resonance excitation system (36, 36') includes at least one radio frequency coil (30, 301, 302, 303) arranged to inject radio frequency B1 fields into the examination region and at least two radio frequency amplifiers (38, 40, 40') coupled with different input ports of the at least one radio frequency coil. A controller (66, 70) controls the magnetic resonance excitation system to produce a time varying spatial B1 field distribution in a subject (16) in the examination region that time integrates to define a spatial tip angle distribution in the subject having reduced spatial non uniformity.
摘要翻译：在磁共振扫描器中，主磁体（20,22）至少在检查区域中产生静磁场。磁场梯度系统（30,54）至少在检查区域中选择性地将磁场梯度叠加在静磁场上。磁共振激励系统（36,36'）包括至少一个射频线圈（30,301,302,303），其布置成将射频B1场注入到检查区域中，并且至少两个射频放大器（38,40,303） 40'）耦合到所述至少一个射频线圈的不同输入端口。控制器（66,70）控制磁共振激励系统以在检查区域中的对象（16）中产生时变空间B1场分布，该时间积分以在被摄体中定义具有降低的空间非均匀性的空间尖角分布。

3. 发明申请

WO2005111646A1 SHORT ELEMENT TEM COIL FOR ULTRA-HIGH FIELD MR 审中-公开
标题翻译：用于超高频场的短元件TEM线圈
公开(公告)号：WO2005111646A1
公开(公告)日：2005-11-24
申请号：PCT/IB2005/051554
申请日：2005-05-11
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , MORICH, Michael, A. , DEMEESTER, Gordon, D. , ZHAI, Zhiyong , HARVEY, Paul, R.
发明人： MORICH, Michael, A. , DEMEESTER, Gordon, D. , ZHAI, Zhiyong , HARVEY, Paul, R.
IPC分类号： G01R33/34
CPC分类号： G01R33/34046 , G01R33/3453
摘要： A transverse electromagnetic (TEM) coil is provided. The TEM coil includes an electrically conductive shell and an end plate disposed at a first end of the shell. The TEM coil also includes a plurality of TEM elements disposed within the shell, the plurality of TEM elements being shorter than the shell.
摘要翻译：提供横向电磁（TEM）线圈。 TEM线圈包括导电壳体和设置在壳体的第一端处的端板。 TEM线圈还包括设置在壳体内的多个TEM元件，多个TEM元件比壳短。

4. 发明申请

WO2005001502A1 CONTROL OF SPECIFIC ABSORPTION RATE (ASR) IN MRI 审中-公开
标题翻译： MRI中特异性吸收率（ASR）的控制
公开(公告)号：WO2005001502A1
公开(公告)日：2005-01-06
申请号：PCT/IB2004/002175
申请日：2004-06-30
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , MORICH, Michael, A. , HARVEY, Paul, R. , ZHAI, Zhiyong , DEMEESTER, Gordon, D.
发明人： MORICH, Michael, A. , HARVEY, Paul, R. , ZHAI, Zhiyong , DEMEESTER, Gordon, D.
IPC分类号： G01R33/58
CPC分类号： G01R33/28 , A61B5/055 , G01R33/288 , G01R33/583
摘要： An MRI apparatus is provided. The apparatus includes a main magnet for generating a main magnetic field in an examination region, a plurality of gradient coils for generating gradient fields within the main field, an RF transmit coil for transmitting RF signals into the examination region and exciting magnetic resonance in a subject disposed therein in accordance with a plurality of imaging parameters, the transmitted RF signals having a SAR associated therewith, and a SAR processor for maintaining the transmitted RF signals below a prescribed SAR level.
摘要翻译：提供MRI装置。该装置包括用于在检查区域中产生主磁场的主磁体，用于在主场内产生梯度场的多个梯度线圈，用于将RF信号发送到检查区域中的激励磁共振的RF发射线圈根据多个成像参数设置在其中，所发送的RF信号具有与其相关联的SAR，以及SAR处理器，用于将发射的RF信号保持在规定的SAR水平以下。

5. 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）。

6. 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。

7. 发明申请

WO2006013547A1 MRI THERMOMETRY INVOLING PHASE MAPPING AND REFERENCE MEDIUM USED AS PHASE REFERENCE 审中-公开
标题翻译：相关参考中使用的相位映射和参考介质的MRI热成像
公开(公告)号：WO2006013547A1
公开(公告)日：2006-02-09
申请号：PCT/IB2005/052561
申请日：2005-07-29
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HARVEY, Paul, R. , SHMATUKHA, Andriy
发明人： HARVEY, Paul, R. , SHMATUKHA, Andriy
IPC分类号： G01R33/48
CPC分类号： G01R33/4804 , G01R33/56563
摘要： The apparatus (1) according to the invention comprises a computing unit (4), which is arranged to access phase images computed from the image data and representative of the target medium (e.g. a region whose temperature is to be monitored) and the reference medium (e.g. a region dominated by fat signal which forms an internal reference) and carry out computing steps to yield an MRI temperature difference map according to the method of the invention. The operation of the computing means is preferably controlled by the computer program according to the invention, whereby the suitable computing steps are programmed as instructions to a suitable processor. The apparatus (1) further comprises a storage unit (8) arranged to store suitable image data which are accessed by the computer program during the computations. The storage unit (8) preferably stores system parameters of the magnetic resonance apparatus, like the strength of the main field B0, gyromagnetic ratio y, and suitable parameters of the target medium, like screThe apparatus (1) according to the invention comprises a computing unit (4), which is arranged to access phase images computed from the image data and representative of the target medium and the reference medium and carry out computing steps to yield temperature difference map according to the method of the invention. The operation of the computing means is preferably controlled by the computer program according to the invention, whereby the suitable computing steps are programmed as instructions to a suitable processor. The apparatus (1) further comprises a storage unit (8) arranged to store suitable image data which are accessed by the computer program during the computations. The storage unit (8) preferably stores system parameters of the magnetic resonance apparatus, like the strength of the main field B0, gyromagnetic ratio y, and suitable parameters of the target medium, like screen constant a in a file (3). The apparatus (1) further comprises a working memory (6), typically based on RAM. The output (9) of the apparatus according to the invention comprises the computed temperature difference map, which can be used to control a suitable medical diagnostic or therapeutic device (not shown), or it may be visualized to a user or be stored for archiving purposes. For feed-back purposes, the apparatus according to the invention comprises a display (7) to visualize the computed temperature difference map. Preferably, the temperature difference map is visualized within a suitable interactive graphic user interface 7a. The invention further relates to a magnetic resonance imaging system, a method and a computer program for computing temperature difference maps.
摘要翻译：根据本发明的装置（1）包括计算单元（4），其被配置为访问从图像数据计算的代表目标介质（例如，要监视其温度的区域）和参考介质（例如由形成内部参考的脂肪信号所支配的区域），并且执行计算步骤以产生根据本发明的方法的MRI温度差图。计算装置的操作优选地由根据本发明的计算机程序控制，由此合适的计算步骤被编程为适合的处理器的指令。装置（1）还包括一个存储单元（8），用于存储由计算机程序在计算过程中访问的合适的图像数据。存储单元（8）优选地存储磁共振装置的系统参数，如主场B0的强度，回旋磁比y，以及目标介质的适当参数，如scre。根据本发明的装置（1）包括计算单元（4），其被配置为访问从图像数据计算的代表目标介质和参考介质的相位图像，并且执行计算步骤以根据本发明的方法产生温度差图。计算装置的操作优选地由根据本发明的计算机程序控制，由此合适的计算步骤被编程为适合的处理器的指令。装置（1）还包括一个存储单元（8），用于存储由计算机程序在计算过程中访问的合适的图像数据。存储单元（8）优选地像文件（3）中的屏幕常数a一样存储磁共振装置的系统参数，如主场B0的强度，回旋磁比y和目标介质的合适参数。装置（1）还包括通常基于RAM的工作存储器（6）。根据本发明的装置的输出（9）包括计算出的温差图，其可用于控制合适的医疗诊断或治疗装置（未示出），或者可以将其可视化为用户或存储用于存档目的。为了反馈目的，根据本发明的装置包括可视化计算出的温差图的显示器（7）。优选地，在适当的交互式图形用户界面7a中可视化温度差图。本发明还涉及用于计算温差图的磁共振成像系统，方法和计算机程序。

8. 发明申请

WO2004106959A1 CONTRAST-ENHANCED MOVING TABLE MR ARTERIOGRAPHY WITH STOCHASTIC SAMPLING OF CENTRAL K-SPACE 审中-公开
标题翻译：对比增强移动表通过中央K空间的STOCHASTIC采样进行扫描
公开(公告)号：WO2004106959A1
公开(公告)日：2004-12-09
申请号：PCT/IB2004/050779
申请日：2004-05-26
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , VAN DEN BRINK, Johan, S. , FUDERER, Miha , HARVEY, Paul, R.
发明人： VAN DEN BRINK, Johan, S. , FUDERER, Miha , HARVEY, Paul, R.
IPC分类号： G01R33/28
CPC分类号： G01R33/56375 , G01R33/5601
摘要： A system is described for the acquisition of a magnetic resonance scan of a subject. The system is particularly useful when the subject which contains a volume of interest which is larger than the field of view of the system and when the scan includes a time dependent signal. The system also comprising a subject support capable of movement relative to the field of view. The system presented is arranged to perform at least a first scan and a second scan, the first scan being arranged so that signal is acquired from the central region of k-space as the subject support is moved through the field of view in a first direction and the second scan being arranged so that signal is acquired from the periphery of k -space as the subject support is moved through the field of view in a second direction.
摘要翻译：描述了用于获取对象的磁共振扫描的系统。当包含感兴趣的体积大于系统视野的主体以及扫描包括时间相关信号时，该系统特别有用。该系统还包括能够相对于视场移动的对象支撑。所呈现的系统被布置成执行至少第一扫描和第二扫描，第一扫描被布置成使得当主体支架沿第一方向移动通过视场时从k空间的中心区域获取信号并且第二扫描被布置成使得当主体支架沿着第二方向移动通过视场时，从k空间的周边获取信号。

9. 发明申请

WO2009150576A1 CRYOCOOLING SYSTEM FOR MRI PROVIDING REDUCED ARTIFACTS CAUSED BY VIBRATIONS 审中-公开
标题翻译：用于MRI提供由振动引起的减少的人造物的CRYOCOOLING SYSTEM
公开(公告)号：WO2009150576A1
公开(公告)日：2009-12-17
申请号：PCT/IB2009/052349
申请日：2009-06-03
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HARVEY, Paul, R. , REIS, Chandra, T., R. , MACHIELSEN, Adrianus, M. , OVERWEG, Johannes, A. , PFLEIDERER, Glen, G.
发明人： HARVEY, Paul, R. , REIS, Chandra, T., R. , MACHIELSEN, Adrianus, M. , OVERWEG, Johannes, A. , PFLEIDERER, Glen, G.
IPC分类号： G01R33/3815 , G01R33/565
CPC分类号： G01R33/3815 , G01R33/3804 , G01R33/56509
摘要： The invention relates to a magnetic resonance imaging cooling system (148) fo cooling a superconducting magnet (122) of a magnetic resonance imaging system the cooling system (148) comprising a cold head (154), wherein the cold head (154) is drivable at a variable stepping frequency, the cooling system (148) being adapted for varying the stepping frequency in a frequency range of continuous cold head operation, such as to reduce image artifacts caused by vibrations of the MRI system generated by the operation of the cold head.
摘要翻译：本发明涉及一种用于冷却磁共振成像系统的超导磁体（122）的磁共振成像冷却系统，冷却系统（148）包括冷头（154），其中冷头（154）可驱动在可变步进频率下，冷却系统（148）适于在连续冷头操作的频率范围内改变步进频率，例如减少由冷头操作产生的MRI系统的振动引起的图像伪影。

10. 发明申请

WO2005106519A1 SYSTEM AND METHOD FOR MAGNETIC RESONANCE IMAGING 审中-公开
标题翻译：磁共振成像系统与方法
公开(公告)号：WO2005106519A1
公开(公告)日：2005-11-10
申请号：PCT/IB2005/051355
申请日：2005-04-26
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , VAN DEN BRINK, Johan, S. , HARVEY, Paul, R.
发明人： VAN DEN BRINK, Johan, S. , HARVEY, Paul, R.
IPC分类号： G01R33/28
CPC分类号： G01R33/5601
摘要： The invention relates to a system and method for magnetic resonance (MR) imaging. In order to provide a magnetic resonance imaging system and method which allows an optimal timing of the imaging sequence at minimal procedure cost, a magnetic resonance imaging system and method is proposed, wherein a first MR scan of a structure of interest is performed for detecting the arrival of a contrast bolus in the structure of interest, the first MR scan using a first resonance frequency corresponding to first MR sensitive nuclei, the first performing step is repeated at least until the bolus arrival in the structure of interest has been detected, and a second MR scan of the structure of interest is performed for acquiring a MR image, the second MR scan using a second resonance frequency corresponding to second MR sensitive nuclei, the second nuclei being different from the first nuclei.
摘要翻译：本发明涉及一种用于磁共振（MR）成像的系统和方法。为了提供以最小程序成本实现成像序列的最佳定时的磁共振成像系统和方法，提出了一种磁共振成像系统和方法，其中执行感兴趣结构的第一MR扫描以检测将造影剂团块到达感兴趣的结构中，使用对应于第一MR敏感核的第一共振频率的第一MR扫描，重复第一执行步骤，至少已经检测到到达感兴趣的结构中的推注，执行感兴趣结构的第二MR扫描以获取MR图像，第二MR扫描使用对应于第二MR敏感核的第二共振频率，第二核与第一核不同。

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