公开(公告)号：US08487621B2

公开(公告)日：2013-07-16

申请号：US12881375

申请日：2010-09-14

申请人： Saikat Saha ,  Longzhi Jiang ,  Timothy John Havens

发明人： Saikat Saha ,  Longzhi Jiang ,  Timothy John Havens

IPC分类号： G01V3/00

CPC分类号： G01R33/34007 ,  A61B5/055 ,  G01R33/34015 ,  G01R33/34046 ,  Y10T29/49002

摘要： An MRI apparatus and method is disclosed comprising a magnetic resonance imaging (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 RF coil assembly comprises an RF tube, a plurality of electrically conductive members disposed around the RF tube and configured to transmit RF excitation pulses, a plurality of electrical components coupled to the electrically conductive members, and at least one thermally conductive substrate mounted upon the RF tube, wherein one of the plurality of electrically conductive members and the plurality of electrical components is mounted to the at least one thermally conductive substrate and is in thermal contact therewith.

摘要翻译： 公开了一种MRI装置和方法，其包括具有围绕磁体的孔定位的多个梯度线圈的磁共振成像（MRI）系统，以及RF收发器系统和由脉冲模块控制的RF开关，以将RF信号传输到 RF线圈组件来获取MR图像。 RF线圈组件包括RF管，多个导电构件，其布置在RF管周围并且被配置为传输RF激励脉冲，耦合到导电构件的多个电气部件，以及安装在所述RF管上的至少一个导热基板 RF管，其中所述多个导电构件和所述多个电气部件中的一个安装到所述至少一个导热基板并与其热接触。

公开(公告)号：US20120062231A1

公开(公告)日：2012-03-15

申请号：US12881375

申请日：2010-09-14

申请人： Saikat Saha ,  Longzhi Jiang ,  Timothy John Havens

发明人： Saikat Saha ,  Longzhi Jiang ,  Timothy John Havens

IPC分类号： G01R33/44 ,  H05K13/04

CPC分类号： G01R33/34007 ,  A61B5/055 ,  G01R33/34015 ,  G01R33/34046 ,  Y10T29/49002

摘要： An MRI apparatus and method is disclosed comprising a magnetic resonance imaging (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 RF coil assembly comprises an RF tube, a plurality of electrically conductive members disposed around the RF tube and configured to transmit RF excitation pulses, a plurality of electrical components coupled to the electrically conductive members, and at least one thermally conductive substrate mounted upon the RF tube, wherein one of the plurality of electrically conductive members and the plurality of electrical components is mounted to the at least one thermally conductive substrate and is in thermal contact therewith.

摘要翻译： 公开了一种MRI装置和方法，其包括具有围绕磁体的孔定位的多个梯度线圈的磁共振成像（MRI）系统，以及RF收发器系统和由脉冲模块控制的RF开关，以将RF信号传输到 RF线圈组件来获取MR图像。 RF线圈组件包括RF管，多个导电构件，其布置在RF管周围并且被配置为传输RF激励脉冲，耦合到导电构件的多个电气部件，以及安装在所述RF管上的至少一个导热基板 RF管，其中所述多个导电构件和所述多个电气部件中的一个安装到所述至少一个导热基板并与其热接触。

公开(公告)号：US08884620B2

公开(公告)日：2014-11-11

申请号：US13108453

申请日：2011-05-16

申请人： Washington de Lima ,  Timothy John Havens ,  Saikat Saha ,  Tesfaye Kebede Kidane

发明人： Washington de Lima ,  Timothy John Havens ,  Saikat Saha ,  Tesfaye Kebede Kidane

IPC分类号： G01V3/00 ,  G01R33/34 ,  G01R33/385

CPC分类号： G01R33/34007 ,  G01R33/34046 ,  G01R33/3854

摘要： An RF body coil having enhanced acoustic deadening properties for an MR scanning apparatus is disclosed. The RF body coil includes an RF support form and RF electronics affixed to the RF support form, with the RF electronics comprising a plurality of RF legs. The RF support form further includes an inner structural layer, an outer structural layer, and a middle layer sandwiched between the inner structural layer and the outer structural layer, the middle layer comprising a layer of viscoelastic material configured to increase the mechanical damping of the RF body coil so as to reduce RF body coil vibration.

摘要翻译： 公开了一种具有增强的用于MR扫描装置的隔音性能的RF体线圈。 RF体线圈包括RF支撑形式和固定到RF支撑形式的RF电子装置，RF电子器件包括多个RF支路。 RF支撑形式还包括内结构层，外结构层和夹在内结构层和外结构层之间的中间层，中间层包括粘弹层材料层，其被配置为增加RF的机械阻尼 身体线圈以减少RF体线圈振动。

公开(公告)号：US08710842B2

公开(公告)日：2014-04-29

申请号：US13042188

申请日：2011-03-07

申请人： Saikat Saha ,  Timothy John Havens ,  Washington de Lima

发明人： Saikat Saha ,  Timothy John Havens ,  Washington de Lima

IPC分类号： G01V3/00

CPC分类号： G01R33/3854 ,  G01R33/288

摘要： An apparatus and method to reduce noise in magnetic resonance imaging (MRI) systems are provided. One MRI system includes a gantry having a bore therethrough and at least one radio frequency (RF) coil supported by the gantry for imaging an object within the bore. The MRI system also includes a vacuum space between the at least one RF coil and the bore.

摘要翻译： 提供了一种降低磁共振成像（MRI）系统噪声的装置和方法。 一个MRI系统包括具有穿过其中的孔的台架和由支架支撑的至少一个射频（RF）线圈，用于对孔内的物体进行成像。 MRI系统还包括在至少一个RF线圈和孔之间的真空空间。

公开(公告)号：US20120293173A1

公开(公告)日：2012-11-22

申请号：US13108453

申请日：2011-05-16

申请人： Washington de Lima ,  Timothy John Havens ,  Saikat Saha ,  Tesfaye Kebede Kidane

发明人： Washington de Lima ,  Timothy John Havens ,  Saikat Saha ,  Tesfaye Kebede Kidane

IPC分类号： G01R33/44

CPC分类号： G01R33/34007 ,  G01R33/34046 ,  G01R33/3854

摘要： An RF body coil having enhanced acoustic deadening properties for an MR scanning apparatus is disclosed. The RF body coil includes an RF support form and RF electronics affixed to the RF support form, with the RF electronics comprising a plurality of RF legs. The RF support form further includes an inner structural layer, an outer structural layer, and a middle layer sandwiched between the inner structural layer and the outer structural layer, the middle layer comprising a layer of viscoelastic material configured to increase the mechanical damping of the RF body coil so as to reduce RF body coil vibration.

摘要翻译： 公开了一种具有增强的用于MR扫描装置的隔音性能的RF体线圈。 RF体线圈包括RF支撑形式和固定到RF支撑形式的RF电子装置，RF电子器件包括多个RF支路。 RF支撑形式还包括内结构层，外结构层和夹在内结构层和外结构层之间的中间层，中间层包括粘弹层材料层，其被配置为增加RF的机械阻尼 身体线圈以减少RF体线圈振动。

公开(公告)号：US08362773B2

公开(公告)日：2013-01-29

申请号：US12897831

申请日：2010-10-05

申请人： Tesfaye Kebede Kidane ,  Timothy John Havens ,  Longzhi Jiang ,  Mark Haig Khachaturian ,  Zhenyu Zhang

发明人： Tesfaye Kebede Kidane ,  Timothy John Havens ,  Longzhi Jiang ,  Mark Haig Khachaturian ,  Zhenyu Zhang

IPC分类号： G01V3/00

CPC分类号： G01R33/56518 ,  A61B5/0402 ,  A61B5/0555 ,  G01R33/3873

摘要： A system and method for modeling gradient coil operation induced magnetic field drift include a computer programmed to acquire a pulse sequence to be applied during an MR scan and determine a power spectrum of a plurality of gradient pulses of the pulse sequence. The computer is also programmed to calculate a drift of the magnetic field attributable to application of the plurality of gradient pulses by the plurality of gradient coils during application of the pulse sequence and apply the pulse sequence during the MR scan. The computer is further programmed to acquire MR data based on application of the pulse sequence, correct the acquired MR data based on the calculated drift of the magnetic field, and reconstruct an image based on the corrected MR data.

摘要翻译： 用于对梯度线圈操作引起的磁场漂移进行建模的系统和方法包括被编程为获取在MR扫描期间施加的脉冲序列并确定脉冲序列的多个梯度脉冲的功率谱的计算机。 该计算机还被编程为计算归因于应用脉冲序列期间多个梯度线圈施加多个梯度脉冲的磁场漂移，并在MR扫描期间施加脉冲序列。 计算机还被编程为基于脉冲序列的应用来获取MR数据，基于计算的磁场漂移来校正所获取的MR数据，并且基于校正的MR数据重建图像。

公开(公告)号：US20120082357A1

公开(公告)日：2012-04-05

申请号：US12897831

申请日：2010-10-05

申请人： Tesfaye Kebede Kidane ,  Timothy John Havens ,  Longzhi Jiang ,  Mark Haig Khachaturian ,  Zhenyu Zhang

发明人： Tesfaye Kebede Kidane ,  Timothy John Havens ,  Longzhi Jiang ,  Mark Haig Khachaturian ,  Zhenyu Zhang

IPC分类号： G06K9/00

CPC分类号： G01R33/56518 ,  A61B5/0402 ,  A61B5/0555 ,  G01R33/3873

摘要： A system and method for modeling gradient coil operation induced magnetic field drift include a computer programmed to acquire a pulse sequence to be applied during an MR scan and determine a power spectrum of a plurality of gradient pulses of the pulse sequence. The computer is also programmed to calculate a drift of the magnetic field attributable to application of the plurality of gradient pulses by the plurality of gradient coils during application of the pulse sequence and apply the pulse sequence during the MR scan. The computer is further programmed to acquire MR data based on application of the pulse sequence, correct the acquired MR data based on the calculated drift of the magnetic field, and reconstruct an image based on the corrected MR data.

摘要翻译： 用于对梯度线圈操作引起的磁场漂移进行建模的系统和方法包括被编程为获取在MR扫描期间施加的脉冲序列并确定脉冲序列的多个梯度脉冲的功率谱的计算机。 该计算机还被编程为计算归因于应用脉冲序列期间多个梯度线圈施加多个梯度脉冲的磁场漂移，并在MR扫描期间施加脉冲序列。 计算机还被编程为基于脉冲序列的应用来获取MR数据，基于计算的磁场漂移来校正所获取的MR数据，并且基于校正的MR数据重建图像。

公开(公告)号：US06201462B1

公开(公告)日：2001-03-13

申请号：US09436829

申请日：1999-11-09

申请人： Evangelos Trifon Laskaris ,  Yu Wang ,  Timothy John Havens ,  Longzhi Jiang

发明人： Evangelos Trifon Laskaris ,  Yu Wang ,  Timothy John Havens ,  Longzhi Jiang

IPC分类号： H01F500

CPC分类号： G01R33/3815 ,  G01R33/3806 ,  H01F6/04

摘要： An open magnet has vertically aligned first and second assemblies each with at least one superconductive main coil. At least one support member is vertically aligned and attached to, the first and second assemblies. At least one cryocooler coldhead is aligned generally horizontally and has a housing which is attached to, and receives weight-bearing support from, one of the first and second assemblies.

摘要翻译： 开放磁体具有垂直排列的第一和第二组件，每个具有至少一个超导主线圈。 至少一个支撑构件垂直对齐并附接到第一和第二组件。 至少一个低温冷却器冷头大致水平对准，并且具有壳体，该壳体从第一组件和第二组件中的一个组件附接到承载支撑件并承载承重支撑件。

公开(公告)号：US07466133B2

公开(公告)日：2008-12-16

申请号：US11069294

申请日：2005-03-01

申请人： Timothy John Havens ,  Stephen R. Elgin ,  Ricardo Becerra

发明人： Timothy John Havens ,  Stephen R. Elgin ,  Ricardo Becerra

IPC分类号： G01V3/00

CPC分类号： G01R33/421 ,  A61B5/055 ,  G01R33/288 ,  G01R33/3815 ,  G01R33/4812

摘要： Systems, methods and apparatus are provided through which in some embodiments a magnetic resonance imaging (MRI) system includes one or more magnetic shield coils positioned asymmetrically in the casing and also positioned in close proximity to one of two apertures of an inner bore of the MRI system. In those embodiments, the position of the one or more magnetic shield coils provides an asymmetric magnetic stray field during operation of the MRI system, which in turn allows operation of electronic medical diagnostic equipment or electronic medical monitoring equipment in close proximity to the MRI.

摘要翻译： 提供了系统，方法和装置，在一些实施例中，磁共振成像（MRI）系统包括一个或多个不对称地定位在壳体中的磁屏蔽线圈，并且还定位成紧邻MRI的内孔的两个孔之一 系统。 在这些实施例中，一个或多个磁屏蔽线圈的位置在MRI系统的操作期间提供不对称的磁性杂散场，其又允许电子医疗诊断设备或电子医疗监测设备在靠近MRI的操作。

公开(公告)号：US20130043870A1

公开(公告)日：2013-02-21

申请号：US13211402

申请日：2011-08-17

申请人： Washington de Lima ,  Timothy John Havens

发明人： Washington de Lima ,  Timothy John Havens

IPC分类号： G01R33/44

CPC分类号： G01R33/34007 ,  G01R33/3854

摘要： A composite RF body coil liner for reducing acoustic noise in an MR System is disclosed. The composite RF body coil liner includes an inner surface layer, an outer surface layer, a fire retardant layer positioned between the inner surface layer and the outer surface layer, and an acoustic barrier positioned between the inner surface layer and the outer surface layer, with the acoustic barrier configured to increase the mechanical damping of the RF body coil so as to reduce RF body coil vibration.

摘要翻译： 公开了一种用于降低MR系统中的声学噪声的复合RF体线圈衬套。 复合RF体线圈衬套包括内表面层，外表面层，位于内表面层和外表面层之间的阻燃层，以及位于内表面层和外表面层之间的声屏障，其中， 声屏障被配置为增加RF体线圈的机械阻尼，以减少RF体线圈振动。