公开(公告)号：US09535143B2

公开(公告)日：2017-01-03

申请号：US13169812

申请日：2011-06-27

申请人： Mark Derakhshan ,  Longzhi Jiang ,  William Einziger ,  Xiaoxue Diao ,  Benjamin Gronemeyer ,  Erman Citirik

发明人： Mark Derakhshan ,  Longzhi Jiang ,  William Einziger ,  Xiaoxue Diao ,  Benjamin Gronemeyer ,  Erman Citirik

IPC分类号： H01F1/00 ,  H01F6/00 ,  G01R33/38 ,  H01F6/06 ,  G01R33/3815

CPC分类号： G01R33/3802 ,  G01R33/3815 ,  H01F6/06 ,  Y10T29/4984

摘要： A coil support arrangement for a Magnetic Resonance Imaging System and method of support are provided. One coil support arrangement includes a main former body having a plurality of channels between end flanges and a splint coupled to the main former body between the end flanges. The coil support arrangement also includes a load spreader coupled to the main former body adjacent one or more of the ends of the splint, and having a gap between the one or more ends of the splint and the load spreader.

摘要翻译： 提供了一种用于磁共振成像系统的线圈支撑装置和支撑方法。 一个线圈支撑装置包括主端部本体，其在端部凸缘之间具有多个通道，并且在端部凸缘之间具有联接到主体主体的夹板。 线圈支撑装置还包括与夹板的一个或多个端部相邻的主成形器本体上的负载撒布机，并且在夹板的一个或多个端部与负载扩展器之间具有间隙。

公开(公告)号：US08511632B2

公开(公告)日：2013-08-20

申请号：US12985679

申请日：2011-01-06

申请人： Mark Derakhshan ,  William Einziger ,  Longzhi Jiang ,  Timothy Wise ,  Venkata Krishnan Veeraraghavan Narayanan ,  Charles Helms ,  Charles Dudley Yarborough

发明人： Mark Derakhshan ,  William Einziger ,  Longzhi Jiang ,  Timothy Wise ,  Venkata Krishnan Veeraraghavan Narayanan ,  Charles Helms ,  Charles Dudley Yarborough

IPC分类号： A47H1/10

CPC分类号： G01R33/3804 ,  G01R33/3802 ,  Y10T29/49826 ,  Y10T292/0968

摘要： A suspension system for a cryostat includes a coupling mechanism, a fixation body, and a pin. The coupling mechanism is joined to an outer vessel and coupled with a strap. The fixation body is joined to an inner vessel. The fixation body extends between a front side that faces the coupling mechanism and an opposite receiving side with an interior channel extending from the receiving side to the front side. The channel defines a front opening in the front side and a rear opening in the receiving side. The pin is loaded into the fixation body through the rear opening in the receiving side of the fixation body with the strap looped around the pin and extending through the front opening to the coupling mechanism. The pin secures the coupling mechanism to the fixation body via the strap by engaging the fixation body inside the channel.

摘要翻译： 用于低温恒温器的悬挂系统包括联接机构，固定体和销。 联接机构连接到外部容器并与带相连。 固定体连接到内部容器。 固定体在面向联接机构的前侧和相对的接收侧之间延伸，内侧通道从接收侧延伸到前侧。 通道限定前侧的前开口和接收侧的后开口。 销通过固定体的接收侧中的后开口装载到固定体中，其带环环绕销并且延伸穿过前开口到联接机构。 销通过将固定体接合在通道内，通过带固定连接机构到固定体。

公开(公告)号：US20130027039A1

公开(公告)日：2013-01-31

申请号：US13192127

申请日：2011-07-27

申请人： Longzhi Jiang

发明人： Longzhi Jiang

IPC分类号： G01R33/28 ,  B23P11/00 ,  B65D6/28

CPC分类号： G01R33/3804 ,  G01R33/3815 ,  H01F6/04 ,  Y10T29/49826

摘要： An end flange for a magnetic resonance imaging (MRI) system and method for manufacturing an end flange are provided. One end flange is for a vacuum vessel of the MRI system. The vacuum vessel includes a housing configured to receive therein a magnet assembly and an end flange forming an end of the housing. The flange includes an outer surface, an inner surface, and a core coupled between the outer and inner surfaces, wherein the core has a greater stiffness than the outer surface and the inner surface.

摘要翻译： 提供了用于磁共振成像（MRI）系统的端部法兰和用于制造端部凸缘的方法。 一端法兰用于MRI系统的真空容器。 真空容器包括构造成在其中容纳磁体组件的壳体和形成壳体的端部的端部凸缘。 凸缘包括外表面，内表面和联接在外表面和内表面之间的芯，其中芯具有比外表面和内表面更大的刚度。

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：US20120306492A1

公开(公告)日：2012-12-06

申请号：US13118777

申请日：2011-05-31

申请人： Ernst Wolfgang Stautner ,  Kathleen Melanie Amm ,  Robbi Lynn McDonald ,  Anthony Mantone ,  John Scaturro, JR. ,  Longzhi Jiang ,  Weijun Shen

发明人： Ernst Wolfgang Stautner ,  Kathleen Melanie Amm ,  Robbi Lynn McDonald ,  Anthony Mantone ,  John Scaturro, JR. ,  Longzhi Jiang ,  Weijun Shen

IPC分类号： G01R33/48 ,  F16L9/00 ,  F16L9/18

CPC分类号： G01R33/3804 ,  G01R33/3815 ,  H01F6/04

摘要： A penetration assembly for a cryostat is presented. The penetration assembly includes an outer wall member having a first end and a second end and configured to alter an effective thermal length of the wall member, wherein a first end of the tube is communicatively coupled to a high temperature region and the second end of the tube is communicatively coupled to a cryogen disposed within a cryogen vessel of the cryostat. In addition, the penetration tube assembly includes a telescoping inner wall member comprising a plurality of tubes nested within one another, and wherein each tube in the plurality of tubes is operatively coupled to at least one other tube in series.

摘要翻译： 提出了一种用于低温恒温器的穿透组件。 穿透组件包括具有第一端和第二端并被配置为改变壁构件的有效热长度的外壁构件，其中管的第一端可通信地联接到高温区域，并且第二端 管连通地耦合到设置在低温恒温器的冷冻剂容器内的冷冻剂。 此外，穿透管组件包括伸缩的内壁构件，其包括彼此嵌套的多个管，并且其中多个管中的每个管可操作地联接至至少一个其他管串联。

公开(公告)号：US20060288710A1

公开(公告)日：2006-12-28

申请号：US11167850

申请日：2005-06-27

申请人： Edwin Legall ,  Mark Derakhshan ,  Longzhi Jiang ,  Roy Mangano

发明人： Edwin Legall ,  Mark Derakhshan ,  Longzhi Jiang ,  Roy Mangano

IPC分类号： F25B9/00 ,  F25B49/00

CPC分类号： G05D23/1919 ,  F25B9/10 ,  F25B9/14 ,  F25B9/145 ,  F25B2309/1411 ,  F25B2309/1428 ,  F25B2400/17 ,  F25D19/00 ,  F25D19/006 ,  F25D29/00 ,  F25D2400/02

摘要： Systems and methods are provided for a variable cooling capacity cryocooler for a superconducting magnetic resonance imaging device having a liquid cryogen pressure vessel to provide cryogenic temperatures to a magnet assembly, a vacuum vessel surrounding the pressure vessel and a radiation shield spaced from the cryogen pressure vessel, and a pressure sensor positioned inside the cryogen pressure vessel pressure boundary for sensing pressure variations. A controller for varying the heat removal rate of the cryocooler based on the pressure variations in the cryogen pressure vessel and where the cooling capacity of the cryocooler is adjusted by modifying the speed of the electric power drive (DC or AC motors) or by changing the mechanical transmission ratio between the constant speed electric power drive and the cryocooler displacer/piston to adjust the cooler oscillating frequency of the gas flow. The invention can be adapted to magnets or non magnets systems using Stirling, Gifford-McMahon (“GM”) and Pulse Tube (“PT”) cooler systems. The system will extend component end of life and provide a controllable constant pressure improving image quality for superconducting MRI magnets.

摘要翻译： 为具有液体冷冻剂压力容器的超导磁共振成像装置的可变冷却能力低温冷却器提供系统和方法，以向磁体组件提供低温温度，围绕压力容器的真空容器和与冷冻剂压力容器间隔开的辐射屏蔽 以及位于冷冻剂压力容器压力边界内的压力传感器，用于感测压力变化。 一种控制器，用于根据冷冻剂压力容器的压力变化改变低温冷却器的除热速率，并且通过改变电力驱动（DC或AC电动机）的速度来调节低温冷却器的冷却能力，或者通过改变 恒速电力驱动与低温冷却器置换器/活塞之间的机械传动比调节气体流的冷却器振荡频率。 本发明可以适用于使用斯特林，吉福德 - 麦克马洪（“GM”）和脉冲管（“PT”）冷却器系统的磁体或非磁体系统。 该系统将延长部件寿命，为超导MRI磁体提供可控的恒定压力，提高图像质量。

公开(公告)号：US08890529B2

公开(公告)日：2014-11-18

申请号：US13157596

申请日：2011-06-10

申请人： Longzhi Jiang ,  Timothy J. Havens ,  John Scaturro, Jr. ,  William L. Einziger ,  Tesfaye K. Kidane

发明人： Longzhi Jiang ,  Timothy J. Havens ,  John Scaturro, Jr. ,  William L. Einziger ,  Tesfaye K. Kidane

IPC分类号： G01R33/385 ,  G01R33/421

CPC分类号： G01R33/385 ,  G01R33/3858 ,  G01R33/4215

摘要： A gradient coil apparatus for a magnetic resonance imaging (MRI) system includes an inner gradient coil assembly comprising at least one inner gradient coil and an outer gradient coil assembly comprising at least one outer gradient coil. At least one gradient coil interconnect is coupled to the inner gradient coil and the outer gradient coil. The gradient coil interconnect includes a wire assembly comprising a plurality of conductors. The wire assembly has a first end electrically coupled to the outer gradient coil assembly and a second end electrically coupled to the inner gradient coil. The gradient coil interconnect also includes a reinforcement material disposed around a portion of the wire assembly.

摘要翻译： 用于磁共振成像（MRI）系统的梯度线圈装置包括内梯度线圈组件，其包括至少一个内梯度线圈和包括至少一个外梯度线圈的外梯度线圈组件。 至少一个梯度线圈互连件耦合到内部梯度线圈和外部梯度线圈。 梯度线圈互连包括包括多个导体的线组件。 线组件具有电耦合到外梯度线圈组件的第一端和电耦合到内梯度线圈的第二端。 梯度线圈互连件还包括围绕线组件的一部分设置的增强材料。

公开(公告)号：US08570043B2

公开(公告)日：2013-10-29

申请号：US12898278

申请日：2010-10-05

申请人： Longzhi Jiang ,  Evangelos Trifon Laskaris ,  John Scaturro, Jr. ,  William Einziger ,  John Arthur Urbahn ,  Kathleen Melanie Amm ,  Jalal Zia ,  In-Hua Xu

发明人： Longzhi Jiang ,  Evangelos Trifon Laskaris ,  John Scaturro, Jr. ,  William Einziger ,  John Arthur Urbahn ,  Kathleen Melanie Amm ,  Jalal Zia ,  In-Hua Xu

IPC分类号： G01V3/00

CPC分类号： F25D19/00 ,  G01R33/3804 ,  G01R33/3815

摘要： Systems and methods for self-sealing a coldhead sleeve of a magnetic resonance imaging system are provided. One coldhead sleeve arrangement includes a coldhead sleeve configured to receive therein a coldhead of an MRI system and having an open end. The coldhead sleeve arrangement also includes a sealing member coupled at the open end of the coldhead sleeve and configured in a normally closed position covering the open end.

摘要翻译： 提供了用于自密封磁共振成像系统的冷头套筒的系统和方法。 一个冷头套管装置包括构造成在其中容纳MRI系统的冷头并具有开口端的冷头套筒。 冷头套筒装置还包括密封构件，该密封构件联接在冷头套筒的开口端并构造成覆盖开口端的常闭位置。

公开(公告)号：US08374663B2

公开(公告)日：2013-02-12

申请号：US13017481

申请日：2011-01-31

申请人： Evangelos Trifon Laskaris ,  James Pellegrino Alexander ,  Paul St. Mark Shadforth Thompson ,  Tao Zhang ,  William Chen ,  Longzhi Jiang

发明人： Evangelos Trifon Laskaris ,  James Pellegrino Alexander ,  Paul St. Mark Shadforth Thompson ,  Tao Zhang ,  William Chen ,  Longzhi Jiang

IPC分类号： H01F6/06

CPC分类号： F25D19/00 ,  G01R33/3804 ,  G01R33/3815 ,  H01F6/04

摘要： A cooling system and method for cooling superconducting magnet coils are provided. One magnet system for a superconducting magnet device includes a cooling system having at least one coil support shell, a plurality of superconducting magnet coils supported by the at least one coil support shell and a plurality of cooling tubes thermally coupled to the at least one coil support shell. The magnet system also includes a cryorefrigerator system fluidly coupled with the plurality of cooling tubes forming a closed circulation cooling system.

摘要翻译： 提供一种用于冷却超导磁体线圈的冷却系统和方法。 用于超导磁体装置的一个磁体系统包括具有至少一个线圈支撑壳体的冷却系统，由至少一个线圈支撑壳体支撑的多个超导磁体线圈以及与该至少一个线圈支架热耦合的多个冷却管 贝壳。 磁体系统还包括与多个冷却管流体耦合的冷冻冷冻系统，其形成封闭的循环冷却系统。

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。