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1. 发明申请

US20100308827A1 SYSTEM AND METHOD FOR MULTI-SPECTRAL MR IMAGING NEAR METAL 有权
标题翻译：用于多金属MR成像的系统和方法
公开(公告)号：US20100308827A1
公开(公告)日：2010-12-09
申请号：US12860272
申请日：2010-08-20
申请人： Kevin M. Koch , Kevin F. King , Graeme C. McKinnon , Brian Hargreaves
发明人： Kevin M. Koch , Kevin F. King , Graeme C. McKinnon , Brian Hargreaves
IPC分类号： G01R33/48
CPC分类号： G01R33/56563 , G01R33/243 , G01R33/4822 , G01R33/5608
摘要： A system and method for multi-spectral MR imaging near metal include a computer programmed to calculate an MR pulse sequence comprising a plurality of RF pulses configured to excite spins in an imaging object and comprising a plurality of volume selection gradients and determine a plurality of distinct offset frequency values. For each respective determined offset frequency value, the computer is programmed to execute the MR pulse sequence having a central transmit frequency and a central receive frequency of the MR pulse sequence set to the respective determined offset frequency value. The computer is also programmed to acquire a three-dimensional (3D) MR data set for each MR pulse sequence execution and generate a composite image based on data from each of the acquired 3D MR data sets.
摘要翻译：用于金属附近的多光谱MR成像的系统和方法包括被编程为计算MR脉冲序列的计算机，该计算机包括被配置为激励成像对象中的自旋的多个RF脉冲，并且包括多个体积选择梯度并且确定多个不同的偏移频率值。对于每个相应确定的偏移频率值，计算机被编程为执行MR脉冲序列，该MR脉冲序列具有被设置为相应确定的偏移频率值的MR脉冲序列的中心发射频率和中心接收频率。计算机还被编程为获取每个MR脉冲序列执行的三维（3D）MR数据集，并且基于来自每个获取的3D MR数据集的数据生成合成图像。

2. 发明授权

US08274286B2 System and method for multi-spectral MR imaging near metal 有权
标题翻译：用于金属附近的多光谱MR成像的系统和方法
公开(公告)号：US08274286B2
公开(公告)日：2012-09-25
申请号：US12860272
申请日：2010-08-20
申请人： Kevin M. Koch , Kevin F. King , Graeme C. McKinnon , Brian Hargreaves
发明人： Kevin M. Koch , Kevin F. King , Graeme C. McKinnon , Brian Hargreaves
IPC分类号： G01V3/00
CPC分类号： G01R33/56563 , G01R33/243 , G01R33/4822 , G01R33/5608
摘要： A system and method for multi-spectral MR imaging near metal include a computer programmed to calculate an MR pulse sequence comprising a plurality of RF pulses configured to excite spins in an imaging object and comprising a plurality of volume selection gradients and determine a plurality of distinct offset frequency values. For each respective determined offset frequency value, the computer is programmed to execute the MR pulse sequence having a central transmit frequency and a central receive frequency of the MR pulse sequence set to the respective determined offset frequency value. The computer is also programmed to acquire a three-dimensional (3D) MR data set for each MR pulse sequence execution and generate a composite image based on data from each of the acquired 3D MR data sets.
摘要翻译：用于金属附近的多光谱MR成像的系统和方法包括被编程为计算MR脉冲序列的计算机，该计算机包括被配置为激励成像对象中的自旋的多个RF脉冲，并且包括多个体积选择梯度并且确定多个不同的偏移频率值。对于每个相应确定的偏移频率值，计算机被编程为执行MR脉冲序列，该MR脉冲序列具有被设置为相应确定的偏移频率值的MR脉冲序列的中心发射频率和中心接收频率。计算机还被编程为获取每个MR脉冲序列执行的三维（3D）MR数据集，并且基于来自每个获取的3D MR数据集的数据生成合成图像。

3. 发明授权

US07821264B2 System and method for MR imaging in inhomogeneous magnetic fields 有权
标题翻译：非均匀磁场中MR成像的系统和方法
公开(公告)号：US07821264B2
公开(公告)日：2010-10-26
申请号：US12016331
申请日：2008-01-18
申请人： Kevin M. Koch , Kevin F. King , Reed F. Busse
发明人： Kevin M. Koch , Kevin F. King , Reed F. Busse
IPC分类号： G01V3/00
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 central receive frequency set to a frequency offset that is 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：用于不均匀磁场中的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接收频率，该频率偏移设定为每个 3D MR数据集。基于多个3D MR数据集生成合成图像。

4. 发明申请

US20100308828A1 SYSTEM AND METHOD FOR RECONSTRUCTING MULTI-SPECTRAL 3D MR IMAGES 有权
标题翻译：用于重建多光谱三维MR图像的系统和方法
公开(公告)号：US20100308828A1
公开(公告)日：2010-12-09
申请号：US12478605
申请日：2009-06-04
申请人： Kevin M. Koch , Diego Hernando Arribas
发明人： Kevin M. Koch , Diego Hernando Arribas
IPC分类号： G01R33/54
CPC分类号： G01R33/56563 , G01R33/243
摘要： An apparatus and method for reconstructing multi-spectral 3D MR images includes a magnetic resonance (MRI) apparatus that includes an MRI system having a plurality of gradient coils positioned about a bore of a magnet, and an RF transceiver system and an RF switch controlled by a pulse module to transmit RF signals to an RF coil assembly to acquire MR images. The MRI apparatus also includes a computer programmed to acquire a plurality of three-dimensional (3D) MR data sets, wherein each 3D MR data set is acquired using a central transmit and receive frequency set to an offset frequency value that is distinct for each 3D MR data set. The computer is also programmed to simultaneously generate a composite image and a magnetic field map based on the plurality of 3D MR data sets.
摘要翻译：用于重建多光谱3D MR图像的装置和方法包括磁共振（MRI）装置，其包括具有围绕磁体的孔定位的多个梯度线圈的MRI系统，以及RF收发器系统和由RF 用于将RF信号发射到RF线圈组件以获取MR图像的脉冲模块。 MRI装置还包括被编程以获取多个三维（MR）MR数据集的计算机，其中使用设置为对于每个3D是不同的偏移频率值的中心发射和接收频率来获取每个3D MR数据集 MR数据集。计算机还被编程为基于多个3D MR数据集同时生成合成图像和磁场图。

5. 发明申请

US20110103670A1 SYSTEM AND METHOD FOR REDUCING BLURRING ARTIFACTS IN MULTI-SPECTRAL MR IMAGING NEAR METAL 有权
标题翻译：用于减少金属附近的多光谱成像中的微阵列的系统和方法
公开(公告)号：US20110103670A1
公开(公告)日：2011-05-05
申请号：US12987687
申请日：2011-01-10
申请人： Kevin M. Koch
发明人： Kevin M. Koch
IPC分类号： G06K9/00 , G01R33/48
CPC分类号： G01R33/56 , G01R33/243 , G01R33/4822 , G01R33/5608 , G01R33/56563
摘要： A system and method for reducing blurring artifacts in multi-spectral MR imaging near metal include an MRI system having a plurality of gradient coils positioned about a bore of a magnet and an RF transceiver system and an RF switch controlled by a pulse module to transmit RF signals to an RF coil assembly to acquire MR images. A computer is also included and programmed to acquire a plurality of three-dimensional (3D) MR data sets, each 3D MR data set acquired using a central transmit frequency and a central receive frequency set to an offset frequency value that is distinct for each 3D MR data set. The computer is also programmed to reconstruct a subimage for each of the plurality of 3D data sets, apply a de-blurring correction to each of the subimages, and generate a composite image based on the plurality of 3D MR data sets.
摘要翻译：用于减少金属附近的多光谱MR成像中的模糊伪影的系统和方法包括具有围绕磁体的孔径定位的多个梯度线圈的MRI系统和RF收发器系统以及由脉冲模块控制的RF开关以发射RF 信号到RF线圈组件以获取MR图像。计算机还被包括并被编程以获取多个三维（MR）MR数据集，使用中心发射频率获得的每个3D MR数据集，以及设置为对于每个3D是不同的偏移频率值的中心接收频率 MR数据集。计算机还被编程为重建多个3D数据集中的每一个的子图像，对每个子图像应用去模糊校正，并且基于多个3D MR数据集生成合成图像。

6. 发明申请

US20090108843A1 METHOD AND APPARATUS FOR CORRECTING DISTORTION IN MR IMAGES CAUSED BY METALLIC IMPLANTS 有权
标题翻译：用于校正由金属植入物引起的MR图像中的失真的方法和装置
公开(公告)号：US20090108843A1
公开(公告)日：2009-04-30
申请号：US11925141
申请日：2007-10-26
申请人： Kevin M. Koch , Richard Scott Hinks , David Thomas Gering
发明人： Kevin M. Koch , Richard Scott Hinks , David Thomas Gering
IPC分类号： G01R33/565
CPC分类号： G01R33/56536 , G01R33/5616
摘要： A technique for reconstructing a corrected MR image from MR images distorted by foreign object induced magnetic fields includes locating a foreign object in a subject and defining a localized area of a field of view about the foreign object where a magnetic field distortion adversely affects a first magnetic distortion correction technique. The first magnetic distortion correction technique is applied to the field of view other than in the localized area. A second magnetic distortion correction technique is applied to the localized area and the results of the application of the first and second magnetic distortion correction techniques are combined. An image is reconstructed based on the results of the application of the first and second magnetic distortion correction techniques.
摘要翻译：用于由异物感应磁场扭曲的MR图像重建校正的MR图像的技术包括将异物定位在对象中并且定义关于异物的视场的局部区域，其中磁场失真对第一磁场有不利影响畸变校正技术。第一磁失真校正技术被应用于局部区域以外的视场。将第二磁失真校正技术应用于局部区域，并且结合第一和第二磁失真校正技术的应用结果。基于第一和第二磁失真校正技术的应用结果重建图像。

7. 发明授权

US09678190B2 System and method for generating MR phase contrast images near metal 有权
公开(公告)号：US09678190B2
公开(公告)日：2017-06-13
申请号：US13441088
申请日：2012-04-06
申请人： Kevin M. Koch
发明人： Kevin M. Koch
IPC分类号： G01R33/565 , G01R33/24
CPC分类号： G01R33/56536 , G01R33/243
摘要： A system and method for generating MR phase contrast images near metal include an MRI apparatus that includes an MRI system having a plurality of gradient coils and an RF transceiver system and an RF switch controlled by a pulse module to transmit RF signals to an RF coil assembly. The MRI apparatus also includes a computer programmed to acquire a plurality of three-dimensional (3D) MR data sets and to generate a plurality of frequency images based on the plurality of 3D MR data sets. Each 3D MR data set is acquired using a central transmit frequency and a central receive frequency set to an offset frequency value that is distinct for each 3D MR data set. The computer is also programmed to convert the plurality of frequency images to a plurality of time domain images and to generate a phase image based on the plurality of time domain images.

8. 发明授权

US07952356B2 System and method for reconstructing multi-spectral 3D MR images 有权
标题翻译：用于重建多光谱3D MR图像的系统和方法
公开(公告)号：US07952356B2
公开(公告)日：2011-05-31
申请号：US12478605
申请日：2009-06-04
申请人： Kevin M. Koch , Diego Hernando Arribas
发明人： Kevin M. Koch , Diego Hernando Arribas
IPC分类号： G01V3/00
CPC分类号： G01R33/56563 , G01R33/243
摘要： An apparatus and method for reconstructing multi-spectral 3D MR images includes a magnetic resonance (MRI) apparatus that includes an MRI system having a plurality of gradient coils positioned about a bore of a magnet, and an RF transceiver system and an RF switch controlled by a pulse module to transmit RF signals to an RF coil assembly to acquire MR images. The MRI apparatus also includes a computer programmed to acquire a plurality of three-dimensional (3D) MR data sets, wherein each 3D MR data set is acquired using a central transmit and receive frequency set to an offset frequency value that is distinct for each 3D MR data set. The computer is also programmed to simultaneously generate a composite image and a magnetic field map based on the plurality of 3D MR data sets.
摘要翻译：用于重建多光谱3D MR图像的装置和方法包括磁共振（MRI）装置，其包括具有围绕磁体的孔定位的多个梯度线圈的MRI系统，以及RF收发器系统和由RF 用于将RF信号发射到RF线圈组件以获取MR图像的脉冲模块。 MRI装置还包括被编程以获取多个三维（MR）MR数据集的计算机，其中使用设置为对于每个3D是不同的偏移频率值的中心发射和接收频率来获取每个3D MR数据集 MR数据集。计算机还被编程为基于多个3D MR数据集同时生成合成图像和磁场图。

9. 发明申请

US20130265046A1 SYSTEM AND METHOD FOR GENERATING MR PHASE CONTRAST IMAGES NEAR METAL 有权
标题翻译：用于生成金相附近的MR相位对比图像的系统和方法
公开(公告)号：US20130265046A1
公开(公告)日：2013-10-10
申请号：US13441088
申请日：2012-04-06
申请人： Kevin M. Koch
发明人： Kevin M. Koch
IPC分类号： G01R33/48 , G01R33/44
CPC分类号： G01R33/56536 , G01R33/243
摘要： A system and method for generating MR phase contrast images near metal include an MRI apparatus that includes an MRI system having a plurality of gradient coils and an RF transceiver system and an RF switch controlled by a pulse module to transmit RF signals to an RF coil assembly. The MRI apparatus also includes a computer programmed to acquire a plurality of three-dimensional (3D) MR data sets and to generate a plurality of frequency images based on the plurality of 3D MR data sets. Each 3D MR data set is acquired using a central transmit frequency and a central receive frequency set to an offset frequency value that is distinct for each 3D MR data set. The computer is also programmed to convert the plurality of frequency images to a plurality of time domain images and to generate a phase image based on the plurality of time domain images.
摘要翻译：用于在金属附近产生MR相位对比图像的系统和方法包括MRI装置，其包括具有多个梯度线圈的MRI系统和RF收发器系统以及由脉冲模块控制的RF开关以将RF信号传输到RF线圈组件。 MRI装置还包括被编程为获取多个三维（MR）MR数据集并基于多个3D MR数据集生成多个频率图像的计算机。使用中心发射频率和设置为对于每个3D MR数据集不同的偏移频率值的中心接收频率来获取每个3D MR数据集。计算机还被编程为将多个频率图像转换为多个时域图像，并且基于多个时域图像生成相位图像。

10. 发明授权

US08421459B2 System and method for reducing blurring artifacts in multi-spectral MR imaging near metal 有权
标题翻译：用于减少金属附近的多光谱MR成像中的模糊伪影的系统和方法
公开(公告)号：US08421459B2
公开(公告)日：2013-04-16
申请号：US12987687
申请日：2011-01-10
申请人： Kevin M. Koch
发明人： Kevin M. Koch
IPC分类号： G01V3/00
CPC分类号： G01R33/56 , G01R33/243 , G01R33/4822 , G01R33/5608 , G01R33/56563
摘要： A system and method for reducing blurring artifacts in multi-spectral MR imaging near metal include an MRI system having a plurality of gradient coils positioned about a bore of a magnet and an RF transceiver system and an RF switch controlled by a pulse module to transmit RF signals to an RF coil assembly to acquire MR images. A computer is also included and programmed to acquire a plurality of three-dimensional (3D) MR data sets, each 3D MR data set acquired using a central transmit frequency and a central receive frequency set to an offset frequency value that is distinct for each 3D MR data set. The computer is also programmed to reconstruct a subimage for each of the plurality of 3D data sets, apply a de-blurring correction to each of the subimages, and generate a composite image based on the plurality of 3D MR data sets.
摘要翻译：用于减少金属附近的多光谱MR成像中的模糊伪影的系统和方法包括具有围绕磁体的孔径定位的多个梯度线圈的MRI系统和RF收发器系统以及由脉冲模块控制的RF开关以发射RF 信号到RF线圈组件以获取MR图像。计算机还被包括并被编程以获取多个三维（MR）MR数据集，使用中心发射频率获得的每个3D MR数据集，以及设置为对于每个3D是不同的偏移频率值的中心接收频率 MR数据集。计算机还被编程为重建多个3D数据集中的每一个的子图像，对每个子图像应用去模糊校正，并且基于多个3D MR数据集生成合成图像。

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