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1.发明申请AUTOCALIBRATING PARALLEL IMAGING RECONSTRUCTION METHOD FROM ARBITRARY K-SPACE SAMPLING WITH REDUCED NOISE 有权自动同步成像重建方法从具有减少噪声的空间K空间采样公开(公告)号：US20120092009A1
公开(公告)日：2012-04-19
申请号：US12907764
申请日：2010-10-19
IPC分类号： G01R33/48
CPC分类号： G01R33/5611 , G01R33/4824
摘要： A computer implemented method for magnetic resonance imaging is provided. A 3D Fourier Transform acquisition is performed with two phase encode directions, wherein phase code locations are chosen so that a total number of phase encodes is less than a Nyquist rate, and closest distances between phase encode locations takes on a multiplicity of values. Readout signals are received through a multi-channel array of a plurality of receivers. An autocalibrating parallel imaging interpolation is performed and a noise correlation is generated. The noise correlation is used to weight a data consistency term of a compressed sensing iterative reconstruction. An image is created from the autocalibration parallel imaging using the weighted data consistency term. The image is displayed.
摘要翻译： 提供了一种用于磁共振成像的计算机实现方法。 使用两个相位编码方向执行3D傅立叶变换采集，其中选择相位位置使得相位编码的总数小于奈奎斯特速率，并且相位编码位置之间的最近距离具有多个值。 通过多个接收器的多通道阵列接收读出信号。 执行自动校准并行成像内插，并产生噪声相关。 噪声相关用于加权压缩感测迭代重建的数据一致性项。 使用加权数据一致性项从自动校准并行成像创建图像。 显示图像。
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2.发明授权Method of autocalibrating parallel imaging interpolation from arbitrary K-space sampling with noise correlations weighted to reduce noise of reconstructed images 有权从任意K空间采样中自动校准平行成像插值的方法，加权噪声相关，以减少重构图像的噪声公开(公告)号：US08638096B2
公开(公告)日：2014-01-28
申请号：US12907764
申请日：2010-10-19
IPC分类号： G01R33/56
CPC分类号： G01R33/5611 , G01R33/4824
摘要： A computer implemented method for magnetic resonance imaging is provided. A 3D Fourier Transform acquisition is performed with two phase encode directions, wherein phase code locations are chosen so that a total number of phase encodes is less than a Nyquist rate, and closest distances between phase encode locations takes on a multiplicity of values. Readout signals are received through a multi-channel array of a plurality of receivers. An autocalibrating parallel imaging interpolation is performed and a noise correlation is generated. The noise correlation is used to weight a data consistency term of a compressed sensing iterative reconstruction. An image is created from the autocalibration parallel imaging using the weighted data consistency term. The image is displayed.
摘要翻译： 提供了一种用于磁共振成像的计算机实现方法。 使用两个相位编码方向执行3D傅立叶变换采集，其中选择相位位置使得相位编码的总数小于奈奎斯特速率，并且相位编码位置之间的最近距离具有多个值。 通过多个接收器的多通道阵列接收读出信号。 执行自动校准并行成像内插，并产生噪声相关。 噪声相关用于加权压缩感测迭代重建的数据一致性项。 使用加权数据一致性项从自动校准并行成像创建图像。 显示图像。
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3.发明授权Coil compression for three dimensional autocalibrating parallel imaging with cartesian sampling 有权线性压缩用于三维自动校准平行成像与笛卡尔采样公开(公告)号：US08538115B2
公开(公告)日：2013-09-17
申请号：US13211905
申请日：2011-08-17
CPC分类号： G01R33/5611
摘要： A three dimensional image, in a phased array magnetic resonance imaging (MRI) system is provided. Three dimensional k-space data within an auto calibration signal (ACS) region and outside the ACS region are acquired. The k-space data within the ACS region are converted into hybrid space ACS data. Compression matrices and alignment matrices of the compression matrices for the hybrid space ACS data are found along a readout direction. Alignment matrices are multiplied to the compression matrices to achieve the properly-aligned compression matrices along the readout direction. All k-space data are converted into hybrid space. The properly-aligned compression matrices are applied to the hybrid space data to provide compressed data with fewer channels. The compressed data are used to form a three dimensional image.
摘要翻译： 提供了在相控阵磁共振成像（MRI）系统中的三维图像。 获取自动校准信号（ACS）区域和ACS区域之外的三维k空间数据。 ACS区域内的k空间数据被转换为混合空间ACS数据。 沿着读出方向找到用于混合空间ACS数据的压缩矩阵的压缩矩阵和对准矩阵。 对齐矩阵与压缩矩阵相乘以便沿着读出方向实现正确对齐的压缩矩阵。 所有k空间数据都转换为混合空间。 将适当对齐的压缩矩阵应用于混合空间数据，以提供具有较少信道的压缩数据。 压缩数据用于形成三维图像。
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4.发明申请K-T SPARSE: HIGH FRAME-RATE DYNAMIC MAGNETIC RESONANCE IMAGING EXPLOITING SPATIO-TEMPORAL SPARSITY 有权K-T SPARSE：高帧速度动态磁共振成像开发空间时空公开(公告)号：US20080197842A1
公开(公告)日：2008-08-21
申请号：US12029583
申请日：2008-02-12
申请人： Michael Lustig , Juan M. Santos , David L. Donoho , John M. Pauly
发明人： Michael Lustig , Juan M. Santos , David L. Donoho , John M. Pauly
IPC分类号： G01R33/54
CPC分类号： G01R33/5611 , G01R33/5608 , G01R33/561 , G01R33/56308 , G01R33/5635
摘要： A method of dynamic resonance imaging is provided. A magnetic resonance imaging excitation is applied. Data in 2 or 3 spatial frequency dimensions, and time is acquired, where an acquisition order in at least one spatial frequency dimension and the time dimension are in a pseudo-random order. The pseudo-random order and enforced sparsity constraints are used to reconstruct a time series of dynamic magnetic resonance images.
摘要翻译： 提供了动态共振成像的方法。 应用磁共振成像激励。 获取2或3个空间频率维度和时间的数据，其中至少一个空间频率维度和时间维度中的获取顺序处于伪随机顺序。 伪随机顺序和强制稀疏约束用于重建动态磁共振图像的时间序列。
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5.发明授权Auto calibration parallel imaging reconstruction method from arbitrary k-space sampling 有权自动校准平行成像重建方法从任意k空间采样公开(公告)号：US08379951B2
公开(公告)日：2013-02-19
申请号：US12024919
申请日：2008-02-01
申请人： Michael Lustig , John M. Pauly
发明人： Michael Lustig , John M. Pauly
CPC分类号： G01R33/5611 , G01R33/4824
摘要： A method for obtaining an image by parallel acquisition magnetic resonance imaging (MRI) is provided. Precessing nuclear spins are excited in a region of a subject. A plurality of response signals, representing magnetic resonance signals arising from the precessing nuclear spins, are simultaneously obtained from the region respectively with a plurality of RF reception coils, with each response signal representing a reduced data set of a totality of all of said response signals. Calibration data points are additionally obtained for each data set. A filter is synthesized using the calibration data points. The synthesizing filter is applied to the reduced data set to obtain a plurality of coupled simultaneous linear equations with a plurality of unknowns. The plurality of coupled simultaneously linear equations with the plurality of unknowns is solved to obtain a complete data set.
摘要翻译： 提供了一种通过并行采集磁共振成像（MRI）获得图像的方法。 核自旋过程在一个主题的地区兴奋起来。 分别从具有多个RF接收线圈的区域中同时获得表示从进动的核自旋产生的表示磁共振信号的多个响应信号，每个响应信号表示所有所述响应信号的总和的减少的数据集 。 为每个数据集额外获得校准数据点。 使用校准数据点合成滤波器。 将合成滤波器应用于缩减数据集，以获得具有多个未知数的多个耦合的联立线性方程组。 解决了具有多个未知数的多个耦合的同时线性方程式以获得完整的数据集。
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公开(公告)号：US08035381B2
公开(公告)日：2011-10-11
申请号：US12259990
申请日：2008-10-28
IPC分类号： G01V3/00
CPC分类号： G01R33/4828 , G01R33/5607
摘要： A computer implemented method for designing a spectral-spatial pulse for exciting at least one passband and minimally exciting at least one stopband is provided. A uniform shaped spectral envelope is generated. For a plurality of kz≠0, kz dependent weights for a spectral envelope that approximate a kz=0 envelope and provides the at least one passband and the at least one stopband for each of the plurality of kz≠0 is generated.
摘要翻译： 提供了一种用于设计用于激励至少一个通带和最少激励至少一个阻带的频谱空间脉冲的计算机实现的方法。 产生均匀形状的光谱包络。 对于多个kz≠0，生成近似kz = 0包络并且为多个kz≠0中的每一个提供至少一个通带和至少一个阻带的频谱包络的kz相关权重。
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公开(公告)号：US20100102812A1
公开(公告)日：2010-04-29
申请号：US12259990
申请日：2008-10-28
IPC分类号： G01R33/483 , G01R33/54
CPC分类号： G01R33/4828 , G01R33/5607
摘要： A computer implemented method for designing a spectral-spatial pulse for exciting at least one passband and minimally exciting at least one stopband is provided. A uniform shaped spectral envelope is generated. For a plurality of kz≠0, kz dependent weights for a spectral envelope that approximate a kz=0 envelope and provides the at least one passband and the at least one stopband for each of the plurality of kz≠0 is generated.
摘要翻译： 提供了一种用于设计用于激励至少一个通带和最少激励至少一个阻带的频谱空间脉冲的计算机实现的方法。 产生均匀形状的光谱包络。 对于多个kz≠0，生成近似kz = 0包络并且为多个kz≠0中的每一个提供至少一个通带和至少一个阻带的频谱包络的kz相关权重。
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公开(公告)号：US07692423B2
公开(公告)日：2010-04-06
申请号：US11868617
申请日：2007-10-08
IPC分类号： G01V3/00
CPC分类号： G01R33/5676
摘要： A method for magnetic resonance imaging (MRI) is provided. A magnetic resonance excitation is provided. A magnetic field is read out through k-space using winders, wherein some of the winders overlap for a length of the winders. Readout data from overlapping lengths of winders is used to estimate motion. The readout may use a two dimensional discrete Fourier transform acquisition.
摘要翻译： 提供了一种用于磁共振成像（MRI）的方法。 提供磁共振激励。 使用络纱机通过k-空间读出磁场，其中一些络纱机在一定长度的络纱机上重叠。 来自重叠长度的络纱机的读出数据用于估计运动。 读出可以使用二维离散付里叶变换采集。
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公开(公告)号：US20090069664A1
公开(公告)日：2009-03-12
申请号：US11852198
申请日：2007-09-07
申请人： Seung Jean Kim , John M. Pauly , Michael Lustig
发明人： Seung Jean Kim , John M. Pauly , Michael Lustig
IPC分类号： A61B5/055
CPC分类号： G01R33/561 , G01R33/4824
摘要： A method for magnetic resonance imaging (MRI) is provided. A scanning path is specified. Gradient amplitude is determined as a function of arc-length along the scanning path in k-space. A time optimal gradient waveform for scanning the scanning path is calculated from the gradient amplitude. The scanning path is scanned using the time optimal gradient waveform.
摘要翻译： 提供了一种用于磁共振成像（MRI）的方法。 指定扫描路径。 梯度幅度被确定为在k空间中沿着扫描路径的弧长的函数。 从梯度振幅计算用于扫描扫描路径的时间最优梯度波形。 使用时间最优梯度波形扫描扫描路径。
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10.发明授权MRI method of determining time-optimal gradient waveforms with gradient amplitude as a function of arc-length in k-space 有权确定时间最优梯度波形的MRI方法，其梯度幅度作为k空间中弧长的函数公开(公告)号：US07791338B2
公开(公告)日：2010-09-07
申请号：US11852198
申请日：2007-09-07
申请人： Seung Jean Kim , John M. Pauly , Michael Lustig
发明人： Seung Jean Kim , John M. Pauly , Michael Lustig
IPC分类号： G01V3/00
CPC分类号： G01R33/561 , G01R33/4824
摘要： A method for magnetic resonance imaging (MRI) is provided. A scanning path is specified. Gradient amplitude is determined as a function of arc-length along the scanning path in k-space. A time optimal gradient waveform for scanning the scanning path is calculated from the gradient amplitude. The scanning path is scanned using the time optimal gradient waveform.
摘要翻译： 提供了一种用于磁共振成像（MRI）的方法。 指定扫描路径。 梯度幅度被确定为在k空间中沿着扫描路径的弧长的函数。 从梯度振幅计算用于扫描扫描路径的时间最优梯度波形。 使用时间最优梯度波形扫描扫描路径。
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