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1. 发明授权

US09183626B2 Systems and methods for accelerated arterial spin labeling using compressed sensing 有权
标题翻译：使用压缩感应加速动脉自旋标记的系统和方法
公开(公告)号：US09183626B2
公开(公告)日：2015-11-10
申请号：US13867325
申请日：2013-04-22
申请人： Li Zhao , Xiao Chen , Samuel W. Fielden , Frederick H. Epstein , John P. Mugler, III , Manal Nicolas-Jilwan , Max Wintermark , Craig H. Meyer
发明人： Li Zhao , Xiao Chen , Samuel W. Fielden , Frederick H. Epstein , John P. Mugler, III , Manal Nicolas-Jilwan , Max Wintermark , Craig H. Meyer
IPC分类号： G06K9/00 , G06T7/00 , G01R33/563 , A61B5/05 , G01R33/561
CPC分类号： G06T7/0012 , G01R33/4824 , G01R33/5611 , G01R33/56366 , G06K9/6232 , G06T11/005 , G06T2207/10088 , G06T2207/30104 , G06T2211/412 , G06T2211/424
摘要： Systems and methods for accelerated arterial spin labeling (ASL) using compressed sensing are disclosed. In one aspect, in accordance with one example embodiment, a method includes acquiring magnetic resonance data associated with an area of interest of a subject, wherein the area of interest corresponds to one or more physiological activities of the subject. The method also includes performing image reconstruction using temporally constrained compressed sensing reconstruction on at least a portion of the acquired magnetic resonance data, wherein acquiring the magnetic resonance data includes receiving data associated with ASL of the area of interest of the subject.
摘要翻译：公开了使用压缩感测加速动脉自旋标记（ASL）的系统和方法。在一个方面，根据一个示例性实施例，一种方法包括获取与受试者的感兴趣区域相关联的磁共振数据，其中感兴趣区域对应于受试者的一个或多个生理活动。该方法还包括在所获取的磁共振数据的至少一部分上使用时间上受限的压缩感测重构来执行图像重建，其中获取磁共振数据包括接收与被摄体的感兴趣区域的ASL相关联的数据。

2. 发明申请

US20130315461A1 SYSTEMS AND METHODS FOR ACCELERATED ARTERIAL SPIN LABELING USING COMPRESSED SENSING 有权
标题翻译：使用压缩感应加速型旋转标签的系统和方法
公开(公告)号：US20130315461A1
公开(公告)日：2013-11-28
申请号：US13867325
申请日：2013-04-22
申请人： Li Zhao , Xiao Chen , Samuel W. Fielden , Frederick H. Epstein , John P. Mugler, III , Manal Nicolas-Jilwan , Max Wintermark , Craig H. Meyer
发明人： Li Zhao , Xiao Chen , Samuel W. Fielden , Frederick H. Epstein , John P. Mugler, III , Manal Nicolas-Jilwan , Max Wintermark , Craig H. Meyer
IPC分类号： G06T7/00
CPC分类号： G06T7/0012 , G01R33/4824 , G01R33/5611 , G01R33/56366 , G06K9/6232 , G06T11/005 , G06T2207/10088 , G06T2207/30104 , G06T2211/412 , G06T2211/424
摘要： Systems and methods for accelerated arterial spin labeling (ASL) using compressed sensing are disclosed. In one aspect, in accordance with one example embodiment, a method includes acquiring magnetic resonance data associated with an area of interest of a subject, wherein the area of interest corresponds to one or more physiological activities of the subject. The method also includes performing image reconstruction using temporally constrained compressed sensing reconstruction on at least a portion of the acquired magnetic resonance data, wherein acquiring the magnetic resonance data includes receiving data associated with ASL of the area of interest of the subject.
摘要翻译：公开了使用压缩感测加速动脉自旋标记（ASL）的系统和方法。在一个方面，根据一个示例性实施例，一种方法包括获取与受试者的感兴趣区域相关联的磁共振数据，其中感兴趣区域对应于受试者的一个或多个生理活动。该方法还包括在所获取的磁共振数据的至少一部分上使用时间上受限的压缩感测重构来执行图像重建，其中获取磁共振数据包括接收与被摄体的感兴趣区域的ASL相关联的数据。

3. 发明授权

US09322896B2 Systems and methods for reduced off-resonance blurring in spiral imaging 有权
标题翻译：用于减少螺旋成像中的非共振模糊的系统和方法
公开(公告)号：US09322896B2
公开(公告)日：2016-04-26
申请号：US13868095
申请日：2013-04-22
申请人： Samuel W. Fielden , Craig H. Meyer , Xue Feng
发明人： Samuel W. Fielden , Craig H. Meyer , Xue Feng
IPC分类号： G01V3/00 , G01R33/565 , G01R33/48
CPC分类号： G01R33/565 , G01R33/4824
摘要： Systems, methods of reducing off-resonance blurring in acquired magnetic resonance imaging data. The method includes acquiring a first set of spiral interleaf data for each of one or more spiral-in/out interleaves by performing a first sampling each of one or more locations in k-space along a first redundant spiral-in/out trajectory, and acquiring a second set of spiral interleaf data for each of the one or more spiral-in/out interleaves by performing a second sampling of each of the one or more locations in the k-space along a second redundant spiral-in/out trajectory, wherein the second redundant spiral-in/out trajectory corresponds to a time-reversed trajectory of the first redundant spiral-in/out trajectory. The method may yet further include combining the first set of spiral interleaf data and the second set of spiral interleaf data with an averaging operation such as to reduce artifacts.
摘要翻译：系统，减少获取的磁共振成像数据中的非共振模糊的方法。该方法包括：通过沿着第一冗余螺旋进/出轨迹对k空间中的一个或多个位置执行第一采样，获取一个或多个螺旋输入/输出交错中的每一个的第一组螺旋插入数据，以及通过沿着第二冗余螺旋进/出轨迹执行所述k空间中的所述一个或多个位置中的每个位置的第二采样来获取所述一个或多个螺旋输入/输出交错中的每一个的第二组螺旋插入数据，其中所述第二冗余螺旋进/出轨迹对应于所述第一冗余螺旋进/出轨迹的时间反转轨迹。该方法还可以包括将第一组螺旋插入数据和第二组螺旋插值数据与平均化操作组合，以减少伪影。

4. 发明申请

US20130278261A1 SYSTEMS AND METHODS FOR REGULARIZED RECONSTRUCTIONS IN MRI USING SIDE INFORMATION 有权
标题翻译：使用侧面信息的MRI中定期重建的系统和方法
公开(公告)号：US20130278261A1
公开(公告)日：2013-10-24
申请号：US13867885
申请日：2013-04-22
申请人： Samuel W. Fielden , Craig H. Meyer
发明人： Samuel W. Fielden , Craig H. Meyer
IPC分类号： G01R33/56
CPC分类号： G01R33/5608
摘要： Systems and methods for magnetic resonance imaging (MRI) using side information for improved reconstruction are disclosed. In one aspect, in accordance with one example embodiment, images obtained using heteronuclei, such as Fluorine-19 (19F), can be reconstructed using one or more methods to provide improved resolution and detail. The system can use anatomical proton MRI scans. The system can use multiple smoothing techniques to improve the signal-to-noise ratio (SNR). The system can also use weighted smoothing using information from anatomical proton MRI scans to improve resolution.
摘要翻译：公开了使用侧面信息进行改进重建的磁共振成像（MRI）的系统和方法。在一个方面，根据一个示例性实施例，可以使用一种或多种方法来重建使用异核的获得的图像，例如氟-19（19F），以提供改进的分辨率和细节。该系统可以使用解剖质子MRI扫描。该系统可以使用多种平滑技术来提高信噪比（SNR）。该系统还可以使用来自解剖质子MRI扫描的信息的加权平滑来提高分辨率。

5. 发明申请

US20140152304A1 SYSTEMS AND METHODS FOR REDUCED OFF-RESONANCE BLURRING IN SPIRAL IMAGING 有权
标题翻译：用于减少螺旋成像中的非共振辐射的系统和方法
公开(公告)号：US20140152304A1
公开(公告)日：2014-06-05
申请号：US13868095
申请日：2013-04-22
申请人： Samuel W. Fielden , Craig H. Meyer , Xue Feng
发明人： Samuel W. Fielden , Craig H. Meyer , Xue Feng
IPC分类号： G01R33/565
CPC分类号： G01R33/565 , G01R33/4824
摘要： Systems, methods of reducing off-resonance blurring in acquired magnetic resonance imaging data. The method includes acquiring a first set of spiral interleaf data for each of one or more spiral-in/out interleaves by performing a first sampling each of one or more locations in k-space along a first redundant spiral-in/out trajectory, and acquiring a second set of spiral interleaf data for each of the one or more spiral-in/out interleaves by performing a second sampling of each of the one or more locations in the k-space along a second redundant spiral-in/out trajectory, wherein the second redundant spiral-in/out trajectory corresponds to a time-reversed trajectory of the first redundant spiral-in/out trajectory. The method may yet further include combining the first set of spiral interleaf data and the second set of spiral interleaf data with an averaging operation such as to reduce artifacts.
摘要翻译：系统，减少获取的磁共振成像数据中的非共振模糊的方法。该方法包括：通过沿着第一冗余螺旋进/出轨迹对k空间中的一个或多个位置执行第一采样，获取一个或多个螺旋输入/输出交错中的每一个的第一组螺旋插入数据，以及通过沿着第二冗余螺旋进/出轨迹执行所述k空间中的所述一个或多个位置中的每个位置的第二采样来获取所述一个或多个螺旋输入/输出交错中的每一个的第二组螺旋插入数据，其中所述第二冗余螺旋进/出轨迹对应于所述第一冗余螺旋进/出轨迹的时间反转轨迹。该方法还可以包括将第一组螺旋插入数据和第二组螺旋插值数据与平均化操作组合，以减少伪影。

6. 发明授权

US07642777B1 Fast automatic linear off-resonance correction method for spiral imaging 有权
标题翻译：用于螺旋成像的快速自动线性非共振校正方法
公开(公告)号：US07642777B1
公开(公告)日：2010-01-05
申请号：US11892261
申请日：2007-08-21
申请人： Craig H. Meyer , Weitian Chen
发明人： Craig H. Meyer , Weitian Chen
IPC分类号： G01V3/00
CPC分类号： G01R33/56563 , G01R33/4824 , G01R33/5601 , G01R33/561 , G01R33/56536
摘要： A fast automatic linear off-resonance correction method for MRI data uses a set of widely spaced demodulation frequencies to estimate a low-resolution field map from the image itself. A linear map is determined by fitting to this low-resolution map using a maximum-likelihood estimator with weights proportional to the pixel intensity.
摘要翻译：用于MRI数据的快速自动线性非共振校正方法使用一组广泛间隔的解调频率来从图像本身估计低分辨率场地图。通过使用具有与像素强度成比例的权重的最大似然估计器拟合到该低分辨率图来确定线性映射。

7. 发明授权

US6020739A Rapid method of optimal gradient waveform design for MRI 失效
标题翻译： MRI的最佳梯度波形设计快速方法
公开(公告)号：US6020739A
公开(公告)日：2000-02-01
申请号：US845343
申请日：1997-04-25
申请人： Craig H. Meyer , John M. Pauly
发明人： Craig H. Meyer , John M. Pauly
IPC分类号： G01V3/00
CPC分类号： G01R33/4824
摘要： Spiral gradient design for a k-space trajectory using gradient amplifier parameters includes first determining an angle between a given gradient, g.sub.n, and the next gradient, g.sub.n+1, and then determining the magnitude of .vertline.g.sub.n+1 .vertline. based on gradient constraints represented by a circle or other shape surrounding and offset from the distal end of g.sub.n, where g.sub.n+1 extends along
摘要翻译：使用梯度放大器参数的k空间轨迹的螺旋梯度设计包括首先确定给定梯度gn和下一个梯度gn + 1之间的角度，然后确定| gn + 1 | 基于由围绕和偏离gn的远端的圆或其他形状表示的梯度约束，其中gn + 1沿着

8. 发明授权

US5957843A Partial flyback echo-planar imaging 失效
标题翻译：部分反激回波平面成像
公开(公告)号：US5957843A
公开(公告)日：1999-09-28
申请号：US515090
申请日：1995-08-14
申请人： Gerard T. Luk Pat , Craig H. Meyer , John M. Pauly , Dwight G. Nishimura
发明人： Gerard T. Luk Pat , Craig H. Meyer , John M. Pauly , Dwight G. Nishimura
IPC分类号： G01R33/561 , A61B5/055
CPC分类号： G01R33/5615 , G01R33/5616
摘要： Flyback imaging is combined with echo planar imaging (EPI) for improved readout flow properties. For increases in imaging time of 50% or less, significant improvements in imaging are realized. The partial flyback improves partial-Fourier EPI and inside-out EPI and can be applied to any EPI trajectory.
摘要翻译：反激成像与回波平面成像（EPI）相结合，可提高读数流动特性。对于50％以下的成像时间的增加，可以实现成像的显着改善。部分回扫提高了部分傅里叶EPI和内向外EPI，并且可以应用于任何EPI轨迹。

9. 发明授权

US5650723A Full echo spiral-in/spiral-out magnetic resonance imaging 失效
标题翻译：全回波螺旋输入/螺旋输出磁共振成像
公开(公告)号：US5650723A
公开(公告)日：1997-07-22
申请号：US643650
申请日：1996-05-06
申请人： Craig H. Meyer
发明人： Craig H. Meyer
IPC分类号： G01R33/48 , G01R33/54 , G01V3/00
CPC分类号： G01R33/446 , G01R33/54 , G01R33/48
摘要： T.sub.2 -weighted interleaved spiral scanning is employed for imaging abdominal tumors. The gradients scan k-space in a spiral-in and spiral-out sequence with a first spiral starting at the edge of k-space and reaching the origin at signal echo time and then spiraling out to the edge of k-space preferably as a k-space conjugate of the inward spiral. A set of interleaves rotated through 180.degree. contains sufficient data to reconstruct an image. Rotating through a full 360.degree. provides additional insensitivity to T.sub.2 decay, inhomogeneity, and flow.
摘要翻译：采用T2加权交错螺旋扫描成像腹部肿瘤。梯度以螺旋入射和螺旋输出序列扫描具有第一螺旋的k空间，从k空间的边缘开始并在信号回波时间到达原点，然后螺旋出k空间的边缘，优选为向内螺旋的k空间共轭。一组旋转180°的交错包含足够的数据来重构图像。 360度旋转对T2衰减，不均匀性和流动性提供了额外的不敏感性。

10. 发明申请

US20140044335A1 Interferometric Magnetic Resonance Imaging System and Related Method 有权
标题翻译：干涉磁共振成像系统及相关方法
公开(公告)号：US20140044335A1
公开(公告)日：2014-02-13
申请号：US14112737
申请日：2012-04-19
申请人： Kenneth O. Johnson , Craig H. Meyer
发明人： Kenneth O. Johnson , Craig H. Meyer
IPC分类号： G06T11/00
CPC分类号： G06T11/003 , G01V3/32
摘要： A method and system for providing a fast image reconstruction of magnetic resonance spectroscopic imaging (MRSI) data based on applying, at least in part, interferometric techniques using a single receiver element. The images are reconstructed through temporally cross-correlating spacially incoherent k-space locations.
摘要翻译：一种用于基于使用单个接收器元件至少部分地应用干涉测量技术来提供磁共振光谱成像（MRSI）数据的快速图像重建的方法和系统。通过时间上互相关的空间非相干k空间位置重建图像。

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