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1. 发明申请

WO1997023844A1 DIRECTIONAL ADAPTIVE NOISE REDUCTION 审中-公开
标题翻译：方向自适应噪声减少
公开(公告)号：WO1997023844A1
公开(公告)日：1997-07-03
申请号：PCT/IB1996001429
申请日：1996-12-13
申请人： PHILIPS ELECTRONICS N.V. , PHILIPS PATENTVERWALTUNG GMBH , PHILIPS NORDEN AB
发明人： PHILIPS ELECTRONICS N.V. , PHILIPS PATENTVERWALTUNG GMBH , PHILIPS NORDEN AB , FUDERER, Miha , AACH, Til , KUNZ, Dietmar, Wilhelm
IPC分类号： G06T05/20
CPC分类号： G06T5/20 , G01R33/5608
摘要： An image is processed taking into account the direction of a predominant structure of the image. Said predominant direction is derived from image information in the image. In particular, according to the invention the covariance matrix having matrix elements depending on products of differences between pixel-values in separate directions is calculated. The eigenvectors of the covariance matrix correspond with the predominant direction of the image structure and the eigenvalues of the covariance matrix represent the strength of the structure in the image. The covariance matrix is computed locally, i.e. for separate regions in the images so as to take variations of the direction of predominant structures into account.
摘要翻译：考虑到图像的主要结构的方向来处理图像。所述主要方向来源于图像中的图像信息。特别地，根据本发明，计算具有取决于分离方向上的像素值之间的差异的乘积的矩阵元素的协方差矩阵。协方差矩阵的特征向量与图像结构的主要方向对应，协方差矩阵的特征值表示图像中结构的强度。局部计算协方差矩阵，即为图像中的单独区域计算，以便考虑主要结构方向的变化。

2. 发明申请

WO1995027907A1 MAGNETIC RESONANCE IMAGING METHOD AND APPARATUS 审中-公开
标题翻译：磁共振成像方法和装置
公开(公告)号：WO1995027907A1
公开(公告)日：1995-10-19
申请号：PCT/IB1995000221
申请日：1995-03-31
申请人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB
发明人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB , VAN HEELSBERGEN, Teunis, Robert , FUDERER, Miha
IPC分类号： G01R33/56
CPC分类号： G01R33/3415
摘要： Method of determining a nuclear magnetic resonance (NMR) distribution in a part of a body using an arrangement of multiple surface coils. In the method, by means of separate surface coils, component distributions are determined and the component distributions are combined to form said NMR distribution. The component distributions are combined to form a distribution Ihom which is optimal with respect to homogeneity and are also combined to form a distribution ISNR which is optimal with respect to signal-to-noise ratio. The distributions Ihom and ISNR are combined to form said NMR distribution, preferably by determining a smoothed ratio of Ihom and ISNR and use that ratio to correct ISNR for homogeneity. Also an apparatus to perform the method is disclosed.
摘要翻译：使用多个表面线圈的布置来确定身体的一部分中的核磁共振（NMR）分布的方法。在该方法中，通过分开的表面线圈，确定组分分布，并将组分分布组合以形成所述NMR分布。组分分布被组合以形成关于均匀性最优的分布Ihom，并且还被组合以形成相对于信噪比最优的分布ISNR。将分布Ihom和ISNR组合以形成所述NMR分布，优选通过确定Ihom和ISNR的平滑比率，并使用该比率来校正ISNR的均匀性。还公开了一种执行该方法的装置。

3. 发明申请

WO1995017850A1 GRASE MRI WITH READ GRADIENT POLARITY CORRECTION AND T2 MEASUREMENT 审中-公开
标题翻译：具有阅读梯度极性校正和T2测量的GRASE MRI
公开(公告)号：WO1995017850A1
公开(公告)日：1995-07-06
申请号：PCT/IB1994000423
申请日：1994-12-14
申请人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB
发明人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB , FUDERER, Miha
IPC分类号： A61B05/055
CPC分类号： G01R33/56554 , G01R33/50 , G01R33/5615
摘要： In a GRASE (Gradient and Spin-Echo) magnetic resonance method, most profiles in k-space with a certain Ky value are measured with different magnetic field read gradient polarity and at different time intervals from the excitation RF-pulse. The two resulting sets of measurements, with positive and negative read gradient polarity, respectively, are used to correct read gradient polarity dependent phase errors, in order to obtain reconstructed images in which the effects of these phase errors are greatly reduced. In an improved version the measurements are used to reconstruct images with a predictable T2 weighting.
摘要翻译：在GRASE（梯度和自旋回波）磁共振方法中，具有一定Ky值的k空间中的大多数轮廓是用不同的磁场读取梯度极性和与激励RF脉冲不同的时间间隔来测量的。分别使用正和负读取梯度极性的两组测量结果来校正读取梯度极性相关的相位误差，以便获得这些相位误差的影响大大降低的重构图像。在改进的版本中，测量用于以可预测的T2加权重建图像。

4. 发明申请

WO1997012256A1 METHOD OF AND DEVICE FOR MEASURING THE VELOCITY OF MOVING MATTER BY MEANS OF MAGNETIC RESONANCE 审中-公开
标题翻译：用于通过磁共振测量移动体的速度的方法和装置
公开(公告)号：WO1997012256A1
公开(公告)日：1997-04-03
申请号：PCT/IB1996000949
申请日：1996-09-16
申请人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB
发明人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB , DE BECKER, Jan, Frans, Lodewijk , HOOGENBOOM, Thomas, Leo, Maria , FUDERER, Miha
IPC分类号： G01R33/563
CPC分类号： G01R33/56308 , G01R33/56316
摘要： A method of determining a velocity of moving matter by means of magnetic resonance, in which a phase contrast method is applied in at least one measuring direction so as to determine a velocity. Upon determination of the velocity by means of phase contrast MRA, the cyclic nature of the phase introduces an ambiguity in the velocity determination. In accordance with the invention, this ambiguity is removed by performing an additional measurement in an additional direction and by combining the velocity measured in the additional direction with the previously determined velocity. It has also been found that there in an optimum direction for this additional measurement. The advantage of the method of the invention consists in that the velocities can be determined and corrected in the three basic directions. As a result, low flow velocities can be measured, so that slow liquid flows in small blood vessels can be made visible in an MR image.
摘要翻译：一种通过磁共振确定移动物体的速度的方法，其中在至少一个测量方向上施加相位对比方法以确定速度。在通过相位对比度MRA确定速度时，相位的循环特性在速度确定中引入了歧义。根据本发明，通过在附加方向上执行附加测量并且将在附加方向上测量的速度与先前确定的速度相结合来消除这种模糊。还发现在该附加测量的最佳方向上。本发明的方法的优点在于可以在三个基本方向上确定和校正速度。结果，可以测量低流速，使得在MR图像中可以使在小血管中流动的液体缓慢。

5. 发明公开

EP0815535A1 DIRECTIONAL ADAPTIVE NOISE REDUCTION 失效
标题翻译：展望自适应降噪
公开(公告)号：EP0815535A1
公开(公告)日：1998-01-07
申请号：EP96940079.0
申请日：1996-12-13
申请人： PHILIPS ELECTRONICS N.V. , Philips Patentverwaltung GmbH
发明人： FUDERER, Miha , AACH, Til , KUNZ, Dietmar, Wilhelm
IPC分类号： A61B5 , G06T1 , G06T5 , G06T7
CPC分类号： G06T5/20 , G01R33/5608
摘要： An image is processed taking into account the direction of a predominant structure of the image. Said predominant direction is derived from image information in the image. In particular, according to the invention the covariance matrix having matrix elements depending on products of differences between pixel-values in separate directions is calculated. The eigenvectors of the covariance matrix correspond with the predominant direction of the image structure and the eigenvalues of the covariance matrix represent the strength of the structure in the image. The covariance matrix is computed locally, i.e. for separate regions in the images so as to take variations of the direction of predominant structures into account.

6. 发明申请

WO2005111649A1 MOVING TABLE MRI 审中-公开
标题翻译：移动表MRI
公开(公告)号：WO2005111649A1
公开(公告)日：2005-11-24
申请号：PCT/IB2005/051559
申请日：2005-05-12
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HAM, Cornelis, L., G. , FUDERER, Miha , VAN DEN BRINK, Johan, S.
发明人： HAM, Cornelis, L., G. , FUDERER, Miha , VAN DEN BRINK, Johan, S.
IPC分类号： G01R33/563
CPC分类号： G01R33/56375
摘要： The invention relates to a MRI system and to a method for producing an image with such an system. In order to provide a MR imaging technique with a high efficient MR signal acquisition, which provides a high level of comfort to a patient, a MRI system and method are suggested, where image data from an object are acquired while the object is moving with variable speed relative to the MRI system, and where the image data are combined and an image of the object is reconstructed.
摘要翻译：本发明涉及一种MRI系统和一种用这种系统生产图像的方法。为了提供具有高效MR信号采集的MR成像技术，其为患者提供了高水平的舒适性，建议了MRI系统和方法，其中在物体运动时获取来自对象的图像数据，相对于MRI系统的速度，并且其中图像数据被组合并且重建对象的图像。

7. 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。

8. 发明申请

WO2004053514A1 MAGNETIC RESONANCE IMAGING SYSTEM WITH A PLURALITY OF TRANSMIT COILS 审中-公开
标题翻译：具有多重发射线圈的磁共振成像系统
公开(公告)号：WO2004053514A1
公开(公告)日：2004-06-24
申请号：PCT/IB2003/005015
申请日：2003-11-04
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HAM, Cornelis, L., G. , FUDERER, Miha
发明人： HAM, Cornelis, L., G. , FUDERER, Miha
IPC分类号： G01R33/36
CPC分类号： G01R33/5659 , G01R33/246 , G01R33/3415 , G01R33/5612
摘要： The invention relates to an MRI system (1) for nuclear magnetic resonance imaging which comprises a plurality of transmit coils (11, 12). Each coil receives a coil drive signal (SD1, SD2). The respective coil drive signals have the same shape, but may have a different amplitude and phase, controlled by a controller (103) on the basis of characteristic information in a memory (104) as well as user input information. The controller is designed to set the respective amplitudes and phases in such a way that the resultant overall B1 field is as homogeneous as possible in a volume of interest.
摘要翻译：本发明涉及用于核磁共振成像的MRI系统（1），其包括多个发射线圈（11,12）。每个线圈接收线圈驱动信号（SD1，SD2）。相应的线圈驱动信号具有相同的形状，但是可以具有不同的幅度和相位，其基于存储器（104）中的特征信息以及用户输入信息由控制器（103）控制。控制器设计成以相应的方式设置相应的幅度和相位，使得所得到的总体B1场在感兴趣的体积中尽可能均匀。

9. 发明申请

WO2011080693A1 WATER -FAT SEPARATION IN MRI USING PARTIAL ECHOES AT DIFFERENT ECHO TIMES 审中-公开
标题翻译：在不同的ECHO时期使用部分ECHO的MRI中的水分离
公开(公告)号：WO2011080693A1
公开(公告)日：2011-07-07
申请号：PCT/IB2010/056083
申请日：2010-12-27
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , FUDERER, Miha , EGGERS, Holger
发明人： FUDERER, Miha , EGGERS, Holger
IPC分类号： G01R33/54
CPC分类号： G01R33/4828
摘要： The invention relates to a method of imaging at least two chemical species using magnetic resonance imaging with signal separation for the at least two chemical species, the method comprising: acquiring dual partial echoes (204, 210, 406, 408, 502, 506, 10, 612) at different echo times, wherein the partial echoes at the respective echo times are located in opposite regions of k- space, processing the partial echoes for reconstruction of a first and second image data set, the first and second image data set comprising separate image data of the first and second chemical species.
摘要翻译：本发明涉及使用具有用于至少两种化学物质的信号分离的磁共振成像来成像至少两种化学物质的方法，所述方法包括：获取双重部分回波（204,210,406,408,502,506,10 ，612），其中在相应回波时间的部分回波位于k空间的相反区域中，处理用于重构第一和第二图像数据集的部分回波，第一和第二图像数据组包括分离第一和第二化学物质的图像数据。

10. 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。

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