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1. 发明申请

US20100156411A1 METHOD FOR PRODUCING SPECTRAL-SPATIAL PARALLEL RF EXCITATION PULSES FOR MAGNETIC RESONANCE IMAGING 有权
标题翻译：用于生成用于磁共振成像的光谱空间平行RF激励脉冲的方法
公开(公告)号：US20100156411A1
公开(公告)日：2010-06-24
申请号：US12544714
申请日：2009-08-20
申请人： Kawin Setsompop , Borjan A. Gagoski , Elfar Adalsteinsson , Vijayanand Alagappan , Lawrence L. Wald
发明人： Kawin Setsompop , Borjan A. Gagoski , Elfar Adalsteinsson , Vijayanand Alagappan , Lawrence L. Wald
IPC分类号： G01R33/44
CPC分类号： G01R33/583 , G01R33/246 , G01R33/4833 , G01R33/485 , G01R33/543 , G01R33/5612 , G01R33/5635 , G01R33/56509
摘要： A method for producing a spatially and spectrally selective radiofrequency (“RF”) excitation pulse includes establishing a desired spatial RF excitation pattern and establishing a desired spectral RF excitation pattern. The method also includes estimating an RF transmission profile map indicative of the transmission characteristics of an RF coil and determining, from the desired spatial and spectral excitation patterns and the estimated RF transmission profile map, at least one magnetic field gradient waveform indicative of locations in k-space to which RF energy is to be deposited. The method further includes determining, from the established spatial and spectral excitation patterns, the estimated RF transmission profile map, and the determined at least one gradient waveform, at least one RF excitation pulse waveform that will produce the desired spatial and spectral excitation patterns.
摘要翻译：用于产生空间和频谱选择性射频（“RF”）激励脉冲的方法包括建立期望的空间RF激励模式并建立期望的频谱RF激励模式。该方法还包括估计指示RF线圈的传输特性的RF传输分布图，并根据期望的空间和频谱激励模式以及估计的RF传输分布图确定表示k中的位置的至少一个磁场梯度波形 - 空间，RF能量将被放置到该空间。该方法还包括根据建立的空间和频谱激励模式，确定估计的RF传输概况图和所确定的至少一个梯度波形，至少一个RF激励脉冲波形，其将产生期望的空间和频谱激励模式。

2. 发明授权

US08085044B2 Method for producing spectral-spatial parallel RF excitation pulses for magnetic resonance imaging 有权
标题翻译：用于产生用于磁共振成像的频谱 - 空间并联RF激励脉冲的方法
公开(公告)号：US08085044B2
公开(公告)日：2011-12-27
申请号：US12544714
申请日：2009-08-20
申请人： Kawin Setsompop , Borjan A. Gagoski , Elfar Adalsteinsson , Vijayanand Alagappan , Lawrence L Wald
发明人： Kawin Setsompop , Borjan A. Gagoski , Elfar Adalsteinsson , Vijayanand Alagappan , Lawrence L Wald
IPC分类号： G01V3/00
CPC分类号： G01R33/583 , G01R33/246 , G01R33/4833 , G01R33/485 , G01R33/543 , G01R33/5612 , G01R33/5635 , G01R33/56509
摘要： A method for producing a spatially and spectrally selective radiofrequency (“RF”) excitation pulse includes establishing a desired spatial RF excitation pattern and establishing a desired spectral RF excitation pattern. The method also includes estimating an RF transmission profile map indicative of the transmission characteristics of an RF coil and determining, from the desired spatial and spectral excitation patterns and the estimated RF transmission profile map, at least one magnetic field gradient waveform indicative of locations in k-space to which RF energy is to be deposited. The method further includes determining, from the established spatial and spectral excitation patterns, the estimated RF transmission profile map, and the determined at least one gradient waveform, at least one RF excitation pulse waveform that will produce the desired spatial and spectral excitation patterns.
摘要翻译：用于产生空间和频谱选择性射频（“RF”）激励脉冲的方法包括建立期望的空间RF激励模式并建立期望的频谱RF激励模式。该方法还包括估计指示RF线圈的传输特性的RF传输分布图，并根据期望的空间和频谱激励模式以及估计的RF传输分布图确定表示k中的位置的至少一个磁场梯度波形 - 空间，RF能量将被放置到该空间。该方法还包括根据建立的空间和频谱激励模式，确定估计的RF传输概况图和所确定的至少一个梯度波形，至少一个RF激励脉冲波形，其将产生期望的空间和频谱激励模式。

3. 发明授权

US08076939B2 Method for fast magnetic resonance radiofrequency coil transmission profile mapping 有权
标题翻译：方法用于快速磁共振射频线圈传输配置文件映射
公开(公告)号：US08076939B2
公开(公告)日：2011-12-13
申请号：US12422017
申请日：2009-04-10
申请人： Kawin Setsompop , Elfar Adalsteinsson , Vijayanand Alagappan , Lawrence Wald
发明人： Kawin Setsompop , Elfar Adalsteinsson , Vijayanand Alagappan , Lawrence Wald
IPC分类号： G01V3/00
CPC分类号： G01R33/583 , G01R33/246 , G01R33/3415 , G01R33/5611
摘要： A system and method for producing an image indicative of characteristics of a radiofrequency (“RF”) coil with a magnetic resonance imaging (“MRI”) system is disclosed. The method includes acquiring MR signals while performing a pulse sequence with the MRI system and driving the RF coil at a selected transmission power. This process is repeated a plurality of times to drive the RF coil at a different transmission powers during each repetition. A plurality of images are reconstructed from the acquired MR signals and an image indicative of RF reception characteristics of the RF coil is produced from the reconstructed images. Subsequently, an image indicative of RF transmission characteristics of the RF coil is produced using the image indicative of the RF receiver response. More specifically, only one data acquisition is necessary for each RF coil element to produce the image indicative of the RF transmission characteristics for that coil element.
摘要翻译：公开了一种用于产生表示具有磁共振成像（“MRI”）系统的射频（“RF”）线圈的特性的图像的系统和方法。该方法包括在用MRI系统执行脉冲序列并以选定的发射功率驱动RF线圈的同时获取MR信号。该过程重复多次以在每次重复期间以不同的发送功率驱动RF线圈。从所获取的MR信号重建多个图像，并且从重建图像产生表示RF线圈的RF接收特性的图像。随后，使用表示RF接收机响应的图像来产生指示RF线圈的RF传输特性的图像。更具体地，对于每个RF线圈元件仅需要一个数据采集来产生指示该线圈元件的RF传输特性的图像。

4. 发明申请

US20100066361A1 METHOD FOR FAST MAGNETIC RESONANCE RADIOFREQUENCY COIL TRANSMISSION PROFILE MAPPING 有权
标题翻译：用于快速磁共振无线电线圈传输简档映射的方法
公开(公告)号：US20100066361A1
公开(公告)日：2010-03-18
申请号：US12422017
申请日：2009-04-10
申请人： Kawin Setsompop , Elfar Adalsteinsson , Vijayanand Alagappan , Lawrence Wald
发明人： Kawin Setsompop , Elfar Adalsteinsson , Vijayanand Alagappan , Lawrence Wald
IPC分类号： G01R33/48
CPC分类号： G01R33/583 , G01R33/246 , G01R33/3415 , G01R33/5611
摘要： A system and method for producing an image indicative of characteristics of a radiofrequency (“RF”) coil with a magnetic resonance imaging (“MRI”) system is disclosed. The method includes acquiring MR signals while performing a pulse sequence with the MRI system and driving the RF coil at a selected transmission power. This process is repeated a plurality of times to drive the RF coil at a different transmission powers during each repetition. A plurality of images are reconstructed from the acquired MR signals and an image indicative of RF reception characteristics of the RF coil is produced from the reconstructed images. Subsequently, an image indicative of RF transmission characteristics of the RF coil is produced using the image indicative of the RF receiver response. More specifically, only one data acquisition is necessary for each RF coil element to produce the image indicative of the RF transmission characteristics for that coil element.
摘要翻译：公开了一种用于产生表示具有磁共振成像（“MRI”）系统的射频（“RF”）线圈的特性的图像的系统和方法。该方法包括在用MRI系统执行脉冲序列并以选定的发射功率驱动RF线圈的同时获取MR信号。该过程重复多次以在每次重复期间以不同的发送功率驱动RF线圈。从所获取的MR信号重建多个图像，并且从重建图像产生表示RF线圈的RF接收特性的图像。随后，使用表示RF接收机响应的图像来产生指示RF线圈的RF传输特性的图像。更具体地，对于每个RF线圈元件仅需要一个数据采集来产生指示该线圈元件的RF传输特性的图像。

5. 发明申请

US20100289494A1 System and Method for Mode Mixing in Magnetic Resonance Imaging 有权
标题翻译：磁共振成像中模式混合的系统和方法
公开(公告)号：US20100289494A1
公开(公告)日：2010-11-18
申请号：US12698864
申请日：2010-02-02
申请人： Lawrence L. Wald , Vijayanand Alagappan , Jonathan R. Polimeni
发明人： Lawrence L. Wald , Vijayanand Alagappan , Jonathan R. Polimeni
IPC分类号： G01R33/44
CPC分类号： G01R33/3415 , G01R33/3621
摘要： The present invention provides a system and method for using a hardware-based compression of signals acquired with an magnetic resonance imaging (MRI) system. This allows a first multi-channel MR signal to be compressed to a second multi-channel MR signal having fewer channels than the first MR signal. This system and method reduces the number of RF receivers needed to achieve the sensitivity encoding benefits associated with highly parallel detection in MRI. Furthermore, the system and method reduces bottlenecks connection an MRI system's RF receiver and reconstruction computer and reduces the computational burden of image reconstruction.
摘要翻译：本发明提供一种用于使用磁共振成像（MRI）系统获取的信号的基于硬件的压缩的系统和方法。这允许第一多信道MR信号被压缩到具有比第一MR信号更少的信道的第二多信道MR信号。该系统和方法减少了实现与MRI中的高度并行检测相关的灵敏度编码优点所需的RF接收器的数量。此外，该系统和方法减少了MRI系统RF接收机和重建计算机的瓶颈连接，降低了图像重建的计算负担。

6. 发明授权

US08581589B2 System and method for variable mode-mixing in magnetic resonance imaging 有权
标题翻译：磁共振成像中可变模式混合的系统和方法
公开(公告)号：US08581589B2
公开(公告)日：2013-11-12
申请号：US12698864
申请日：2010-02-02
申请人： Lawrence L. Wald , Vijayanand Alagappan , Jonathan R. Polimeni
发明人： Lawrence L. Wald , Vijayanand Alagappan , Jonathan R. Polimeni
IPC分类号： G01R33/3415 , G01R33/36
CPC分类号： G01R33/3415 , G01R33/3621
摘要： The present invention provides a system and method for using a hardware-based compression of signals acquired with an magnetic resonance imaging (MRI) system. This allows a first multi-channel MR signal to be compressed to a second multi-channel MR signal having fewer channels than the first MR signal. This system and method reduces the number of RF receivers needed to achieve the sensitivity encoding benefits associated with highly parallel detection in MRI. Furthermore, the system and method reduces bottlenecks connection an MRI system's RF receiver and reconstruction computer and reduces the computational burden of image reconstruction.
摘要翻译：本发明提供一种用于使用磁共振成像（MRI）系统获取的信号的基于硬件的压缩的系统和方法。这允许第一多信道MR信号被压缩到具有比第一MR信号更少的信道的第二多信道MR信号。该系统和方法减少了实现与MRI中的高度并行检测相关的灵敏度编码优点所需的RF接收器的数量。此外，该系统和方法减少了MRI系统RF接收机和重建计算机的瓶颈连接，降低了图像重建的计算负担。

7. 发明申请

US20110304422A1 TRANSFORMER ASSEMBLY FOR A MAGNETIC RESONANCE IMAGING SYSTEM 有权
标题翻译：用于磁共振成像系统的变压器组件
公开(公告)号：US20110304422A1
公开(公告)日：2011-12-15
申请号：US12797810
申请日：2010-06-10
申请人： Victor Taracila , Fraser Robb , Aleksey Zemskov , Vijayanand Alagappan , Miguel Navarro
发明人： Victor Taracila , Fraser Robb , Aleksey Zemskov , Vijayanand Alagappan , Miguel Navarro
IPC分类号： H01F5/00 , H01F41/00
CPC分类号： H01F27/2804 , G01R33/34007 , G01R33/3415 , G01R33/3628 , G01R33/365 , H01F19/04 , H01F21/12
摘要： A transformer assembly includes a substrate having a first surface and an opposing second surface, a first spiral wound inductive coil formed on the first surface, and a second spiral wound inductive coil formed on the first surface; the first and second spiral wound inductive coils forming a double spiral arrangement on the first surface such that the first coil is inductively coupled to the second coil. An RF coil including the transformer assembly and a method of fabricating the transformer assembly are also described.
摘要翻译：变压器组件包括具有第一表面和相对的第二表面的基板，形成在第一表面上的第一螺旋卷绕感应线圈和形成在第一表面上的第二螺旋卷绕感应线圈; 所述第一和第二螺旋卷绕感应线圈在所述第一表面上形成双螺旋布置，使得所述第一线圈感应耦合到所述第二线圈。还描述了包括变压器组件的RF线圈和制造变压器组件的方法。

8. 发明授权

US08674799B2 Transformer assembly for a magnetic resonance imaging system 有权
标题翻译：用于磁共振成像系统的变压器组件
公开(公告)号：US08674799B2
公开(公告)日：2014-03-18
申请号：US12797810
申请日：2010-06-10
申请人： Victor Taracila , Fraser Robb , Aleksey Zemskov , Vijayanand Alagappan , Miguel Navarro
发明人： Victor Taracila , Fraser Robb , Aleksey Zemskov , Vijayanand Alagappan , Miguel Navarro
IPC分类号： H01F5/00 , H01F27/28
CPC分类号： H01F27/2804 , G01R33/34007 , G01R33/3415 , G01R33/3628 , G01R33/365 , H01F19/04 , H01F21/12
摘要： A transformer assembly includes a substrate having a first surface and an opposing second surface, a first spiral wound inductive coil formed on the first surface, and a second spiral wound inductive coil formed on the first surface; the first and second spiral wound inductive coils forming a double spiral arrangement on the first surface such that the first coil is inductively coupled to the second coil. An RF coil including the transformer assembly and a method of fabricating the transformer assembly are also described.
摘要翻译：变压器组件包括具有第一表面和相对的第二表面的基板，形成在第一表面上的第一螺旋卷绕感应线圈和形成在第一表面上的第二螺旋卷绕感应线圈; 所述第一和第二螺旋卷绕感应线圈在所述第一表面上形成双螺旋布置，使得所述第一线圈感应耦合到所述第二线圈。还描述了包括变压器组件的RF线圈和制造变压器组件的方法。

9. 发明申请

US20110267061A1 QUARTER WAVE BALUN FOR MAGNETIC RESONANCE IMAGING SYSTEMS 有权
标题翻译：用于磁共振成像系统的季波浪
公开(公告)号：US20110267061A1
公开(公告)日：2011-11-03
申请号：US12772753
申请日：2010-05-03
申请人： Victor Taracila , Fraser Robb , Aleksey Zemskov , Vijayanand Alagappan
发明人： Victor Taracila , Fraser Robb , Aleksey Zemskov , Vijayanand Alagappan
IPC分类号： G01R33/44 , H01F19/00 , H03H7/42
CPC分类号： G01R33/3685 , H01P5/10 , Y10T29/4902
摘要： A balun assembly includes a body portion having an opening extending therethrough, the opening sized to receive at least one radio-frequency (RF) cable therethrough, the RF cable transmitting a signal therethrough a signal having a wavelength, and a balun disposed within the body portion, the balun being folded to form a plurality of layers, the combined length of the layers being approximately equal to a quarter wavelength of the signal transmitted through the RF cable. A method of fabricating a balun assembly and an MRI system including a balun are also provided.
摘要翻译：平衡 - 不平衡变压器组件包括具有延伸穿过其中的开口的主体部分，该开口的尺寸设置成接收至少一个射频（RF）电缆穿过其中，RF电缆通过其中的信号传输具有波长的信号，以及平衡 - 不平衡转换器平衡不平衡变换器被折叠以形成多个层，层的组合长度近似等于通过RF电缆传输的信号的四分之一波长。还提供了一种制造平衡 - 不平衡变换组件和包括平衡 - 不平衡变换器的MRI系统的方法。

10. 发明申请

US20130317346A1 ADJUSTABLE HEAD COIL SYSTEMS AND METHODS FOR MAGNETIC RESONANCE IMAGING 审中-公开
标题翻译：可调节磁头线圈系统和磁共振成像方法
公开(公告)号：US20130317346A1
公开(公告)日：2013-11-28
申请号：US13481323
申请日：2012-05-25
申请人： Vijayanand Alagappan , Fraser Robb , Miguel Angel Navarro, II , Craig William Culver , Victor Taracila , John Edward Ferut , Sarah Grace Leversee , Sanjay G. Mathias
发明人： Vijayanand Alagappan , Fraser Robb , Miguel Angel Navarro, II , Craig William Culver , Victor Taracila , John Edward Ferut , Sarah Grace Leversee , Sanjay G. Mathias
IPC分类号： A61B5/055
CPC分类号： A61B5/0555 , G01R33/34046 , G01R33/34084
摘要： A system for magnetic resonance imaging of anatomy including a head is provided. The system includes a base member, a plurality of support members, and a plurality of articulable reception units. The plurality of support members are movably fixed to the base member and configured to translate across a surface of the base member. Each support member is releasably securable to the base member in a plurality of positions along the surface of the base member. The articulable reception units are movable from an open position to a plurality of closed positions. Each reception unit comprises at least one radio frequency (RF) receive coil disposed within a body, with the body configured for abutment with a portion of a head. Each of the plurality of articulable reception units is releasably secured in the plurality of closed positions by at least one of the plurality of support members.
摘要翻译：提供了包括头部的解剖结构的磁共振成像系统。该系统包括基座构件，多个支撑构件和多个可铰接的接收单元。多个支撑构件可移动地固定到基部构件并且构造成平移跨越基部构件的表面。每个支撑构件在沿着基底构件的表面的多个位置中可释放地固定到基部构件。可关节接收单元可从打开位置移动到多个关闭位置。每个接收单元包括设置在主体内的至少一个射频（RF）接收线圈，其中主体被配置为与头部的一部分邻接。多个关节接收单元中的每一个由多个支撑构件中的至少一个可释放地固定在多个关闭位置。

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