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。

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。

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。

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。

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。

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。

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。

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。

公开(公告)号：US08427159B2

公开(公告)日：2013-04-23

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： G01V3/00

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。

公开(公告)号：US08704610B2

公开(公告)日：2014-04-22

申请号：US13195707

申请日：2011-08-01

申请人： Victor Taracila ,  Fraser John Laing Robb ,  Vijayanand Alagappan ,  Miguel Angel Navarro, II ,  Peter Asuzu

发明人： Victor Taracila ,  Fraser John Laing Robb ,  Vijayanand Alagappan ,  Miguel Angel Navarro, II ,  Peter Asuzu

IPC分类号： H03H2/00

CPC分类号： G01R33/34007 ,  G01R33/3415 ,  G01R33/3621 ,  H05K1/0243 ,  H05K1/025

摘要： A multi-layer cradle comprises a first layer comprising first and second contact pads configured to be electrically coupled to a signal input and a signal output of the electronic component, respectively. The first layer also comprises a first ground plane configured to be electrically coupled to a ground of the electronic component and a first fence positioned about the first ground plane. The first ground plane is positioned at least between the first and second contact pads. A second layer comprising a second ground plane is also included. The cradle further comprises a first dielectric material positioned between the first and second layers, a ground plane via extending through the first dielectric material and electrically coupled to the first and second ground planes, and a plurality of fence vias extending through the first dielectric material and electrically coupled to the first fence and to second ground plane.

摘要翻译： 多层支架包括第一层，第一层包括分别电耦合到电子元件的信号输入和信号输出的第一和第二接触焊盘。 第一层还包括配置为电耦合到电子部件的接地的第一接地平面和围绕第一接地平面定位的第一栅栏。 第一接地平面至少位于第一和第二接触垫之间。 还包括包括第二接地平面的第二层。 托架还包括位于第一和第二层之间的第一介电材料，延伸穿过第一介电材料并电耦合到第一和第二接地平面的接地平面，以及延伸穿过第一介电材料的多个栅栏通孔， 电耦合到第一栅栏和第二接地平面。