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11. 发明授权

US07292032B1 Method and system of enhanced phase suppression for phase-contrast MR imaging 有权
标题翻译：相位对比MR成像增强相位抑制的方法和系统
公开(公告)号：US07292032B1
公开(公告)日：2007-11-06
申请号：US10711603
申请日：2004-09-28
申请人： Jason A. Polzin
发明人： Jason A. Polzin
IPC分类号： G01V3/00
CPC分类号： G01R33/56308 , G01R33/56316 , G01R33/56518
摘要： An automated image processing technique is disclosed that evaluates pixels of a phase-difference image to determine those pixels corresponding to inflowing phase data and background phase data. Phase-difference images are generated from a first acquisition and a second acquisition. Non-zero spatially varying background phase from the phase-difference images that are due to eddy currents induced by flow encoding gradients used to generate the phase-difference images is determined. This non-zero spatially varying background phase is removed from the phase-difference images to determine phase associated with flowing spins and phase associated with stationary spins.
摘要翻译：公开了一种自动图像处理技术，其评估相位差图像的像素，以确定与流入相位数据和背景相位数据相对应的那些像素。从第一次采集和第二次采集生成相位差图像。确定由于由用于产生相位差图像的流编码梯度引起的涡流引起的相位差图像的非零空间变化背景相位。从相位差图像中去除非零空间变化的背景相位，以确定与静止自旋相关的流动自旋和相位相关的相位。

12. 发明授权

US06707300B2 Gradient non-linearity compensation in moving table MRI 有权
公开(公告)号：US06707300B2
公开(公告)日：2004-03-16
申请号：US10147701
申请日：2002-05-17
申请人： Jason A. Polzin , Stephen J. Riederer , David G. Kruger
发明人： Jason A. Polzin , Stephen J. Riederer , David G. Kruger
IPC分类号： G01V300
CPC分类号： G01R33/56375 , G01R33/56518
摘要： The present invention includes a method and apparatus to correct for gradient field distortions. The invention is particularly applicable in moving table imaging where a single extended image is desirable. The invention includes acquiring MR data in motion in the presence of gradient non-linearities, transforming the MR data acquired into the image domain, and then applying a warping correction function to the transformed MR data. The warp-corrected MR data is then corrected for motion induced during the MR acquisition. The data may be acquired point-by-point, line-by-line, or another sub-portion of the entire MR data acquired, and processed to minimize the amount of motion correction needed. Based on table velocity or acquisition sequence applied, the data is partitioned based on a common motion correction factor, and after correcting for motion, the data is accumulated to build up a final image.

13. 发明授权

US07755355B2 Method and system of enhanced phase suppression for phase-contrast MR imaging 有权
标题翻译：相位对比MR成像增强相位抑制的方法和系统
公开(公告)号：US07755355B2
公开(公告)日：2010-07-13
申请号：US11933520
申请日：2007-11-01
申请人： Jason A. Polzin
发明人： Jason A. Polzin
IPC分类号： G01V3/00
CPC分类号： G01R33/56308 , G01R33/56316 , G01R33/56518
摘要： An automated image processing technique is disclosed that evaluates pixels of a phase-difference image to determine those pixels corresponding to inflowing phase data and background phase data. Phase-difference images are generated from a first acquisition and a second acquisition. Non-zero spatially varying background phase from the phase-difference images that are due to eddy currents induced by flow encoding gradients used to generate the phase-difference images is determined. This non-zero spatially varying background phase is removed from the phase-difference images to determine phase associated with flowing spins and phase associated with stationary spins.
摘要翻译：公开了一种自动图像处理技术，其评估相位差图像的像素，以确定与流入相位数据和背景相位数据相对应的那些像素。从第一次采集和第二次采集生成相位差图像。确定由于由用于产生相位差图像的流编码梯度引起的涡流引起的相位差图像的非零空间变化背景相位。从相位差图像中去除非零空间变化的背景相位，以确定与静止自旋相关的流动自旋和相位相关的相位。

14. 发明申请

US20100031443A1 PATIENT TRANSPORT APPARATUS WITH INTEGRATED SUBSYSTEMS FOR USE IN MAGNETIC RESONANCE IMAGING 有权
标题翻译：具有用于磁共振成像的综合子系统的患者运输装置
公开(公告)号：US20100031443A1
公开(公告)日：2010-02-11
申请号：US12188251
申请日：2008-08-08
申请人： Emil Markov Georgiev , Jason A. Polzin , Ryan W. Rindy , Mark J. Stefka , Robert Meurer
发明人： Emil Markov Georgiev , Jason A. Polzin , Ryan W. Rindy , Mark J. Stefka , Robert Meurer
IPC分类号： A61G13/02 , A61B5/055
CPC分类号： A61B5/0555 , A61G13/06 , A61G13/107 , A61G2210/50 , Y10T29/49826
摘要： A patient transport apparatus having a table configured to support a patient, a base attached to the table, a docking system attached to the base, the docking system configured to couple to a mating docking system of an MR imaging system, and a plurality of bays formed in the base, with each bay configured to receive a patient care module therein. The patient transport apparatus further includes a control system configured to be electrically coupled to each patient care module received within the plurality of bays and configured to centrally control each patient care module.
摘要翻译：一种患者输送装置，具有被配置为支撑患者的台，附接到桌子的基座，连接到基座的对接系统，配置成耦合到MR成像系统的配合对接系统的对接系统和多个间隔形成在基座中，每个隔间配置成在其中接收病人护理模块。患者输送装置还包括控制系统，其被配置为电耦合到在多个间隔区内接收的每个病人护理模块，并配置成集中控制每个病人护理模块。

15. 发明授权

US06208139B1 System and method of phase sensitive MRI reconstruction using partial k-space data 失效
标题翻译：使用部分k空间数据进行相位敏感MRI重建的系统和方法
公开(公告)号：US06208139B1
公开(公告)日：2001-03-27
申请号：US09154673
申请日：1998-09-18
申请人： Thomas K. F. Foo , Jason A. Polzin
发明人： Thomas K. F. Foo , Jason A. Polzin
IPC分类号： G01R3320
CPC分类号： G01R33/561
摘要： A system and method for phase sensitive MRI reconstruction using partial k-space data to reduce either scan time or echo time, depending on whether partial echo or partial NEX MR data is acquired, that retains phase information and reduces edge blurring in a magnetic resonance image. Phase sensitive partial k-space data reconstruction improves upon the homodyne reconstruction process to estimate and correct for an edge blurring convolution error term in a partial echo or partial NEX data while preserving phase information. The phase sensitive partial k-space reconstruction includes Fourier transforming and filtering the partial k-space data through high and low-pass filters, and a linear combination of both, and estimating a blurring correction term, representative of a convolution error factor, from a portion of the filtered data set. Once the blurring correction factor is determined, it is applied to remove the convolution error term from the filter data set in order to reconstruct an MRI having, both magnitude and phase information while minimizing edge blurring that normally results from partial k-space data acquisition.
摘要翻译：使用部分k空间数据的相位敏感MRI重建的系统和方法，其取决于是否获取部分回波或部分NEX MR数据来减少扫描时间或回波时间，其保留相位信息并减少磁共振图像中的边缘模糊。相位敏感部分k空间数据重建改进了零差重建过程，以估计和校正部分回波或部分NEX数据中的边缘模糊卷积误差项，同时保留相位信息。相位敏感部分k空间重建包括通过高通滤波器和低通滤波器对部分k空间数据进行傅里叶变换和滤波，以及两者的线性组合，并从代表卷积误差因子的模糊校正项部分已过滤数据集。一旦确定了模糊校正因子，就将其应用于从滤波器数据集中去除卷积误差项，以便重建具有幅度和相位信息的MRI，同时最小化通常由部分k空间数据获取产生的边缘模糊。

16. 发明授权

US06198283B1 System and method of phase sensitive MRI reconstruction using partial k-space data and including a network 失效
标题翻译：使用部分k空间数据并包括网络的相位敏感MRI重建的系统和方法
公开(公告)号：US06198283B1
公开(公告)日：2001-03-06
申请号：US09473243
申请日：1999-12-27
申请人： Thomas K. F. Foo , Jason A. Polzin
发明人： Thomas K. F. Foo , Jason A. Polzin
IPC分类号： G01R3320
CPC分类号： G01R33/561
摘要： A system to correct edge blurring in an image reconstructed with partial k-space data includes a magnetic resonance imaging system, a computer, and a network. The magnetic resonance imaging system has a plurality of gradient coils positioned about a bore of a magnet to impress a polarizing magnetic field and an RF transceiver system and an RF modulator controlled by a pulse control module to transmit RF signals to an RF coil assembly to acquire MR images. The computer is programmed to: acquire a partial k-space data set having both magnitude and phase information; filter the partial k-space data set through high and low-pass filters and a linear combination of both the high and low-pass filters; Fourier transform the filtered data set; estimate a blurring correction factor representative of a convolution error term from a portion of the filtered data set; and apply the blurring correction factor to the filtered data set to remove the convolution error term and reconstruct an MRI preserving both magnitude and phase information while minimizing edge blurring in the reconstructed MRI. The network is coupled to any one of the magnetic resonance imaging system and the computer. The network provides communication with a remote facility for remote services.
摘要翻译：用于校正用部分k空间数据重建的图像中的边缘模糊的系统包括磁共振成像系统，计算机和网络。磁共振成像系统具有围绕磁体的孔径定位以多个偏振磁场的多个梯度线圈和RF收发器系统以及由脉冲控制模块控制的RF调制器，以将RF信号传输到RF线圈组件以获取 MR图像。计算机被编程为：获取具有幅度和相位信息的部分k空间数据集; 通过高低通滤波器和高通滤波器和低通滤波器的线性组合对部分k空间数据集进行滤波; 傅里叶变换滤波数据集; 估计代表来自滤波数据集的一部分的卷积误差项的模糊校正因子; 并将滤波数据组应用模糊校正因子以去除卷积误差项，并重建保持幅度和相位信息的MRI，同时最小化重构的MRI中的边缘模糊。网络耦合到磁共振成像系统和计算机中的任何一个。网络提供与远程设施的远程服务通信。

17. 发明授权

US6008648A Method for producing physical gradient waveforms in magnetic resonance imaging 失效
标题翻译：在磁共振成像中产生物理梯度波形的方法
公开(公告)号：US6008648A
公开(公告)日：1999-12-28
申请号：US985019
申请日：1997-12-04
申请人： Anton M. Linz , Jason A. Polzin , Paul E. Licato , Graeme C. McKinnon
发明人： Anton M. Linz , Jason A. Polzin , Paul E. Licato , Graeme C. McKinnon
IPC分类号： G01R33/385 , G01V3/00
CPC分类号： G01R33/3852 , G01R33/385
摘要： An MRI system produces magnetic field gradients along physical axes during a patient scan. The gradients are specified as logical gradient waveforms in a pulse sequence and these are stored in a logical vector table. A physical vector table is produced by rotating amplitude values in the logical vector table, and the resulting rotated amplitude values are used to calculate the heating in each gradient axis of the MRI system.
摘要翻译： MRI系统在患者扫描期间沿物理轴产生磁场梯度。梯度被指定为脉冲序列中的逻辑梯度波形，并将它们存储在逻辑矢量表中。通过旋转逻辑矢量表中的振幅值产生物理矢量表，并且使用所得到的旋转振幅值来计算MRI系统的每个梯度轴中的加热。

18. 发明授权

US09549687B2 Patient transport apparatus with integrated subsystems for use in magnetic resonance imaging 有权
标题翻译：具有用于磁共振成像的集成子系统的患者输送装置
公开(公告)号：US09549687B2
公开(公告)日：2017-01-24
申请号：US12188251
申请日：2008-08-08
申请人： Emil Markov Georgiev , Jason A. Polzin , Ryan W. Rindy , Mark J. Stefka , Robert Meurer
发明人： Emil Markov Georgiev , Jason A. Polzin , Ryan W. Rindy , Mark J. Stefka , Robert Meurer
IPC分类号： A61B5/05 , A61B5/055 , A61G13/06 , A61G13/10
CPC分类号： A61B5/0555 , A61G13/06 , A61G13/107 , A61G2210/50 , Y10T29/49826
摘要： A patient transport apparatus having a table configured to support a patient, a base attached to the table, a docking system attached to the base, the docking system configured to couple to a mating docking system of an MR imaging system, and a plurality of bays formed in the base, with each bay configured to receive a patient care module therein. The patient transport apparatus further includes a control system configured to be electrically coupled to each patient care module received within the plurality of bays and configured to centrally control each patient care module.
摘要翻译：一种患者输送装置，具有被配置为支撑患者的台，附接到桌子的基座，连接到基座的对接系统，配置成耦合到MR成像系统的配合对接系统的对接系统和多个间隔形成在基座中，每个隔间配置成在其中接收病人护理模块。患者输送装置还包括控制系统，其被配置为电耦合到在多个间隔区内接收的每个病人护理模块，并配置成集中控制每个病人护理模块。

19. 发明授权

US06967479B2 Gradient non-linearity compensation in moving table MRI 有权
标题翻译：移动台MRI梯度非线性补偿
公开(公告)号：US06967479B2
公开(公告)日：2005-11-22
申请号：US10752656
申请日：2004-01-07
申请人： Jason A. Polzin , Stephen J. Riederer , David G. Kruger
发明人： Jason A. Polzin , Stephen J. Riederer , David G. Kruger
IPC分类号： G01R33/32 , A61B5/055 , G01R33/563 , G01R33/565 , G01V3/00
CPC分类号： G01R33/56375 , G01R33/56518
摘要： The present invention includes a method and apparatus to correct for gradient field distortions. The invention is particularly applicable in moving table imaging where a single extended image is desirable. The invention includes acquiring MR data in motion in the presence of gradient non-linearities, transforming the MR data acquired into the image domain, and then applying a warping correction function to the transformed MR data. The warp-corrected MR data is then corrected for motion induced during the MR acquisition. The data may be acquired point-by-point, line-by-line, or another sub-portion of the entire MR data acquired, and processed to minimize the amount of motion correction needed. Based on table velocity or acquisition sequence applied, the data is partitioned based on a common motion correction factor, and after correcting for motion, the data is accumulated to build up a final image.
摘要翻译：本发明包括校正梯度场失真的方法和装置。本发明特别适用于需要单个扩展图像的移动台成像。本发明包括在存在梯度非线性的情况下获取运动中的MR数据，将获取的MR数据变换成图像域，然后对变换的MR数据应用翘曲校正功能。然后对在MR采集期间引起的运动校正翘曲校正的MR数据。数据可以逐点，逐行或者获取的整个MR数据的另一个子部分获取，并且被处理以最小化所需的运动校正量。根据应用的表速度或采集顺序，根据共同的运动校正因子对数据进行分区，并且在校正运动之后，累积数据以建立最终图像。

20. 发明授权

US06339626B1 MRI system with fractional decimation of acquired data 失效
$MRI system with fractional decimation of acquired data$
标题翻译： MRI系统采用抽样数据进行抽样
公开(公告)号：US06339626B1
公开(公告)日：2002-01-15
申请号：US09039436
申请日：1998-03-16
申请人： Matthew A. Bernstein , Jason A. Polzin , Bo J. Petersson , Frederick J. Frigo
发明人： Matthew A. Bernstein , Jason A. Polzin , Bo J. Petersson , Frederick J. Frigo
IPC分类号： H04L700
CPC分类号： G01R33/56
摘要： An MRI system acquires NMR signals and digitizes them at a fixed sample rate. A lower, prescribed sample rate is obtained by fractionally decimating the sampled NMR signals. Fractional decimation is achieved by a combination of zeropadding the sampled NMR signal in the frequency domain and decimating the sampled NMR signal in the time domain.
摘要翻译： MRI系统获取NMR信号并以固定的采样率数字化。通过对采样的NMR信号进行分数抽取，获得较低的规定采样率。通过在频域中加样采样的NMR信号并在时域中抽取采样的NMR信号来组合分数抽取。

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