专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明申请

WO2014075005A1 HIGH SPATIAL AND TEMPORAL RESOLUTION DYNAMIC CONTRAST-ENHANCED MAGNETIC RESONANCE IMAGING 审中-公开
标题翻译：高空间和时间分辨率动态对比增强磁共振成像
公开(公告)号：WO2014075005A1
公开(公告)日：2014-05-15
申请号：PCT/US2013/069466
申请日：2013-11-11
申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
发明人： HU, Peng , RAPACCHI, Stanislas
IPC分类号： G06T5/00 , A61B5/055
CPC分类号： G01R33/5601 , G01R33/4822 , G01R33/5611 , G01R33/5635 , G06T11/006 , G06T2207/10096
摘要： A method for high spatial and temporal resolution dynamic contrast enhanced magnetic resonance imaging using a random subsampled Cartesian k-space using a Poisson-disk random pattern acquisition strategy and a compressed sensing reconstruction algorithm incorporating magnitude image subtraction is presented. One reconstruction uses a split-Bregman minimization of the sum of the L1 norm of the pixel-wise magnitude difference between two successive temporal frames, a fidelity term and a total variation (TV) sparsity term.
摘要翻译：提出了一种使用泊松盘随机模式获取策略的随机二次抽样笛卡尔k空间的高空间和时间分辨率动态对比增强磁共振成像的方法，以及结合幅度图像相减的压缩感测重建算法。一个重建使用两个连续的时间帧之间的像素级幅度差的L1范数，保真度项和总变化（TV）稀疏项的分数Bregman最小化。

32. 发明申请

WO2014059237A1 SYSTEMS AND METHODS FOR SUSCEPTIBILITY TENSOR IMAGING IN THE P-SPACE 审中-公开
标题翻译： P空间中可疑传感器成像的系统和方法
公开(公告)号：WO2014059237A1
公开(公告)日：2014-04-17
申请号：PCT/US2013/064478
申请日：2013-10-11
申请人： LIU, Chunlei
发明人： LIU, Chunlei
IPC分类号： A61B5/055
CPC分类号： G01R33/561 , G01R33/443 , G01R33/4822 , G01R33/4824 , G01R33/5616 , G01R33/56536
摘要： Systems and methods for susceptibility tensor imaging in the p-space are disclosed. An example method includes using an MRI system to generate an MRI signal of an object. The method may also include conducting a multipole analysis of the MRI signal in a subvoxel Fourier spectral space (p-space). Further, the method may include sampling the p-space with pulsed field gradients to determine a set of dipole and quadrupole susceptibility tensors. The method may also include generating an image of the object based on the set of dipole and quadrupole susceptibility tensors for depicting a characteristic of the object.
摘要翻译：公开了用于p空间中的敏感性张量成像的系统和方法。示例性方法包括使用MRI系统来生成对象的MRI信号。该方法还可以包括在子体素傅里叶谱空间（p空间）中进行MRI信号的多极分析。此外，该方法可以包括用脉冲场梯度对p空间进行采样以确定一组偶极子和四极敏感度张量。该方法还可以包括基于用于描绘对象的特征的偶极子和四极易感性张量的集合来生成对象的图像。

33. 发明申请

WO2013159044A1 SYSTEM, METHOD AND COMPUTER-ACCESSIBLE MEDIUM FOR HIGHLY-ACCELERATED DYNAMIC MAGNETIC RESONANCE IMAGING USING GOLDEN-ANGLE RADIAL SAMPLNG AND COMPRESSED SENSING 审中-公开
标题翻译：系统，方法和计算机可访问介质，用于使用金角径向抽样和压缩感测的高速动态磁共振成像
公开(公告)号：WO2013159044A1
公开(公告)日：2013-10-24
申请号：PCT/US2013/037456
申请日：2013-04-19
申请人： NEW YORK UNIVERSITY
发明人： OTAZO, Ricardo , FENG, Li , BLOCK, Tobias , CHANDARANA, Hersh , AXEL, Leon , SODICKSON, Daniel K.
IPC分类号： G06T7/00 , A61B5/055
CPC分类号： G01R33/561 , A61B5/055 , A61B5/7207 , G01R33/28 , G01R33/4822 , G01R33/4824 , G01R33/5611 , G01R33/56308
摘要： Exemplary method, system and computer-accessible medium can be provided which facilitates an acquisition of radial data, which can be continuous, with an exemplary golden-angle procedure and reconstruction with arbitrary temporal resolution at arbitrary time points. According to such exemplary embodiment, such procedure can be performed with a combination of compressed sensing and parallel imaging to offer a significant improvement, for example in the reconstruction of highly undersampled data. It is also possible to provide an exemplary procedure for highly-accelerated dynamic magnetic resonance imaging using Golden-Angle radial sampling and multicoil compressed sensing reconstruction, called Golden-angle Radial Sparse Parallel MRI (GRASP).
摘要翻译：可以提供示例性方法，系统和计算机可访问的介质，其有助于以任意时间点采用示例性的黄金角度过程和任意时间分辨率的重建来采集可连续的径向数据。根据这样的示例性实施例，可以使用压缩感测和并行成像的组合来执行这种过程，以提供显着的改进，例如在高度欠采样的数据的重建中。也可以提供使用Golden-Angle径向采样和多焦度压缩感测重建（称为金角径向稀疏平行MRI（GRASP））的高度加速动态磁共振成像的示例性程序。

34. 发明申请

WO2009091482A1 SYSTEM AND METHOD FOR MR IMAGING IN INHOMOGENEOUS MAGNETIC FIELDS 审中-公开
标题翻译：非均匀磁场中MR成像的系统和方法
公开(公告)号：WO2009091482A1
公开(公告)日：2009-07-23
申请号：PCT/US2008/087912
申请日：2008-12-22
申请人： GENERAL ELECTRIC COMPANY , KOCH, Kevin, M. , KING, Kevin, F. , BUSSE, Reed, F.
发明人： KOCH, Kevin, M. , KING, Kevin, F. , BUSSE, Reed, F.
IPC分类号： G01R33/54 , G01R33/565
CPC分类号： G01R33/243 , G01R33/4822 , G01R33/5608 , G01R33/56563
摘要： An apparatus and method for MR imaging in inhomogeneous magnetic fields includes acquisition of a plurality of three-dimensional (3D) MR data sets, each data set having a central transmit frequency and a centra! receive frequency set to a frequency offset that h distinct for each 3D MR data set A composite image is generated based on the plurality of 3D MR data sets
摘要翻译：用于非均匀磁场中的MR成像的装置和方法包括获取多个三维（MR）MR数据集，每个数据集具有中心发射频率和中心发射频率。接收频率被设置为对于每个3D MR数据集h不同的频率偏移基于多个3D MR数据集生成合成图像

35. 发明申请

WO2009047690A2 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：WO2009047690A2
公开(公告)日：2009-04-16
申请号：PCT/IB2008/054081
申请日：2008-10-06
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , BECK, Gabriele, M. , DE BECKER, Jan, F., L. , JONES, Alun, C., R.
发明人： BECK, Gabriele, M. , DE BECKER, Jan, F., L. , JONES, Alun, C., R.
IPC分类号： G01R33/563 , G01R33/565
CPC分类号： G01R33/5601 , G01R33/4818 , G01R33/4822 , G01R33/4824 , G01R33/5602 , G01R33/5607 , G01R33/5615
摘要： The invention relates to a device for magnetic resonance imaging of at least a portion of a body placed in an examination volume. The device is arranged to perform the following successive steps: a) acquiring two or more differently phase-encoded MR signals (a, b, c, d) by subjecting the portion to a shot of an imaging pulse sequence comprising at least one RF pulse and switched magnetic field gradients; b) repeating step a) to scan k-space completely by applying a plurality of shots and by using a phase encoding scheme, according to which k-space is divided into at least two segments (17, 18, 19, 20), each segment (17, 18, 19, 20) being further divided into sub-segments, wherein MR signals (a, b, c, d) are acquired from different sub-segments of a single segment during each shot, which sub- segments are successively arranged in k-space in the order of the temporal succession of the MR signals (a, b, c, d), and c) reconstructing an MR image from the acquired MR signals.
摘要翻译：本发明涉及一种用于对放置在检查体积中的身体的至少一部分进行磁共振成像的装置。该装置被布置成执行以下连续步骤：a）通过对部分进行包括至少一个RF脉冲的成像脉冲序列的镜头来获取两个或更多个不同相位编码的MR信号（a，b，c，d）并切换磁场梯度; b）重复步骤a）通过应用多个拍摄并通过使用相位编码方案来完全扫描k空间，根据该相位编码方案，k空间被划分为至少两个片段（17,18,19,20），每个片段（17,18,19,20）被进一步划分成子片段，其中MR信号（a，b，c，d）在每个镜头期间从单个片段的不同子片段获取，哪些子片段是按照MR信号（a，b，c，d）的时间依次顺序排列在k空间中，以及c）从所获取的MR信号重构MR图像。

36. 发明申请

WO2008041208A3 SEGMENTED MULTI-SHOT MRI INVOLVING MAGNETIZATION PREPARATION 审中-公开
标题翻译：涉及多种MRI技术涉及磁化准备
公开(公告)号：WO2008041208A3
公开(公告)日：2008-07-03
申请号：PCT/IB2007054111
申请日：2007-10-09
申请人： KONINKL PHILIPS ELECTRONICS NV , BECK GABRIELE M , DE BECKER JAN F L , JONES ALUN C R
发明人： BECK GABRIELE M , DE BECKER JAN F L , JONES ALUN C R
IPC分类号： G01R33/563 , G01R33/565
CPC分类号： G01R33/5607 , G01R33/4818 , G01R33/4822 , G01R33/4824 , G01R33/5601 , G01R33/5616 , G01R33/5617 , G01R33/5619 , G01R33/5635
摘要： The invention relates to a device for magnetic resonance imaging of at least a portion of a body placed in an examination volume. The device is arranged to perform the following successive steps: a) acquiring two or more differently phase-encoded MR signals (a, b, c, d) by subjecting the portion to a shot of an imaging pulse sequence comprising at least one RF pulse and switched magnetic field gradients; b) repeating step a) to scan k-space completely by applying a plurality of shots and by using a phase encoding scheme, according to which k-space is divided into at least two segments (17, 18, 19, 20), each segment (17, 18, 19, 20) being further divided into sub-segments, wherein MR signals (a, b, c, d) are acquired from different sub-segments of a single segment during each shot, which sub- segments are successively arranged in k-space in the order of the temporal succession of the MR signals (a, b, c, d), and c) reconstructing an MR image from the acquired MR signals.
摘要翻译：本发明涉及一种用于对放置在检查体积中的身体的至少一部分进行磁共振成像的装置。该装置被布置成执行以下连续步骤：a）通过对部分进行包括至少一个RF脉冲的成像脉冲序列的镜头来获取两个或更多个不同相位编码的MR信号（a，b，c，d）并切换磁场梯度; b）重复步骤a）通过应用多个拍摄并通过使用相位编码方案来完全扫描k空间，根据该相位编码方案，k空间被划分为至少两个片段（17,18,19,20），每个片段（17,18,19,20）被进一步划分成子片段，其中MR信号（a，b，c，d）在每个镜头期间从单个片段的不同子片段获取，哪些子片段是按照MR信号（a，b，c，d）的时间依次顺序排列在k空间中，以及c）从所获取的MR信号重构MR图像。

37. 发明申请

WO2005073748A1 BILDGEBUNGSVERFAHREN BASIEREND AUF SELBSTÄHNLICHEN FLÄCHEN- ODER RAUMFÜLLENDEN KURVEN 审中-公开
标题翻译：成像过程基于自相似的面积或体积填充曲线
公开(公告)号：WO2005073748A1
公开(公告)日：2005-08-11
申请号：PCT/EP2004/053572
申请日：2004-12-17
申请人： FORSCHUNGSZENTRUM JÜLICH GMBH , PATZAK, Richard , GEMBRIS, Daniel , APPELT, Stephan , HÄSING, Friedrich, Wolfgang , HALLING, Horst
发明人： PATZAK, Richard , GEMBRIS, Daniel , APPELT, Stephan , HÄSING, Friedrich, Wolfgang , HALLING, Horst
IPC分类号： G01R33/48
CPC分类号： G01R33/4822 , G01R33/445 , G01R33/48 , G01R33/4806 , G01R33/5615
摘要： Die Erfindung betrifft ein Bildgebungsverfahren für die Kernmagnetresonanz, wobei auf eine Probe ein konstantes, statisches Magnetfeld einwirkt, wobei dem statischen Magnetfeld ein Zusatzfeld überlagert wird, das in mindestens einer Gitterfläche innerhalb des Probenvolumens in jedem Punkt der Gitterfläche unterschiedliche Feldstärkewerte aufweist, wobei die Probe durch ein hochfrequentes, elektromagnetisches Wechselfeld angeregt wird, und wobei die von der angeregten Probe abgestrahlte elektromagnetische Strahlung ausgelesen und zur Bildgenerlerung ausgewertet wird. Die Erfindung betrifft auch ein NMR-Bildgebungsverfahren, bei dem das Signal entlang einer selbstähnlichen, raumfüllenden Trajektorie ausgelesen wird, die durch eine Hilbert-Kurve beschrieben wird.
摘要翻译：本发明涉及一种图像形成用于核磁共振，其中一个常数，静磁场施加到样品，所述静磁场的辅助场被叠加的方法，包括在网格区域不同的场强值的每个点处的样品体积内的至少一个网格区域，其中所述样品通过高频交变电磁场被激励，且其中读出从激发样品的电磁辐射发射的光，评价Bildgenerlerung。本发明还涉及一种成像NMR方法，其中沿一个自相似，空间填充轨迹信号被读出，它是由一个希尔伯特曲线来描述。

38. 发明申请

WO00005600A1 THREE-DIMENSIONAL MORPHOLOGY BY MAGNETIC RESONANCE IMAGING 审中-公开
标题翻译：通过磁共振成像的三维形态学
公开(公告)号：WO00005600A1
公开(公告)日：2000-02-03
申请号：PCT/US1999/016516
申请日：1999-07-22
IPC分类号： G01R33/54 , G01V3/00
CPC分类号： G01R33/4822
摘要： Methods and systems obtain three-dimensional images of object morphology using nuclear magnetic resonance imaging. Most preferably, an object is immersed in a volume of imaging fluid (12). An image is then generated (20) by nuclear magnetic resonance imaging representative of a spatial distribution of the image fluid. The three-dimensional image sequences that are obtained thus represent a contoured outline of the image fluid which conforms to the morphology of the object being imaged. These three-dimensional image sequences are then processed to produce a digital array of the object which may be displayed.
摘要翻译：方法和系统使用核磁共振成像获得物体形态的三维图像。最优选地，物体被浸入一定体积的成像流体（12）中。然后通过代表图像流体的空间分布的核磁共振成像产生（20）图像。因此，所获得的三维图像序列表示符合被成像对象的形态的图像流体的轮廓轮廓。然后处理这些三维图像序列以产生可被显示的对象的数字阵列。

39. 发明申请

WO1992002829A1 ECHO-VOLUMAR IMAGING USING 180° RF PULSES 审中-公开
标题翻译：使用180°RF脉冲进行立体声成像
公开(公告)号：WO1992002829A1
公开(公告)日：1992-02-20
申请号：PCT/GB1991001284
申请日：1991-07-30
申请人： NATIONAL RESEARCH DEVELOPMENT CORPORATION , MANSFIELD, Peter
发明人： NATIONAL RESEARCH DEVELOPMENT CORPORATION
IPC分类号： G01R33/56
CPC分类号： G01R33/5615 , F02G1/0445 , F02G2250/18 , G01R33/4822 , G01R33/5618
摘要： A method of producing a magnetic resonance image of a defined region of an object by an echo volumar imaging process including subjecting the object to an initial selection process to select a thick slice within the object to produce an active volume of spin magnetisation subjecting the active volume so defined to a combination of 180° RF pulses and suitably modulated x, y and z gradients to produce an echo volumar image.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式