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1. 发明授权

US06819108B2 Method of magnetic field controlled shimming 失效
标题翻译：磁场调节方法
公开(公告)号：US06819108B2
公开(公告)日：2004-11-16
申请号：US10410416
申请日：2003-04-09
申请人： Jinhua Huang , Bu-Xin Xu , Bijan Dorri , Bruce Amm
发明人： Jinhua Huang , Bu-Xin Xu , Bijan Dorri , Bruce Amm
IPC分类号： G01V300
CPC分类号： G01R33/3873 , G01R33/3875
摘要： The present invention is directed to a method of shimming a magnet assembly of an MR imaging system such that a desired B0 field strength may be created with minimal inhomogeneities therethrough. With this method, sufficient shimming of the magnet assembly may be achieved without requiring mechanical variations to the magnet assembly after the magnet assembly has been assembled. The invention analyzes variations from the desired B0 field and inhomogeneities at a number of target points along the magnet assembly or B0 field. A comparison is then made at each point to determine a shimming or weighting factor such that the desired overall B0 field strength and targeted field homogeneity is achieved. Active and/or passive shim elements may then be incorporated into the magnet assembly at each target point to achieve the desired overall field strength and minimum overall field homogeneity.
摘要翻译：本发明涉及一种对MR成像系统的磁体组件进行匀场的方法，使得可以以最小的非均匀性通过其产生所需的B0场强。利用这种方法，可以在磁体组件组装之后不需要对磁体组件的机械变化来实现磁体组件的足够的垫片。本发明分析了沿着磁体组件或B0场的多个目标点处的期望的B0场和不均匀性的变化。然后在每个点进行比较以确定匀场或加权因子，使得实现期望的总体B0场强和目标场均匀性。然后可以在每个目标点处将主动和/或被动垫片元件并入到磁体组件中，以实现期望的总场强和最小的整体场均匀性。

2. 发明申请

US20050068138A1 Multiple ring polefaceless permanent magnet and method of making 有权
标题翻译：多环无极永磁体及其制造方法
公开(公告)号：US20050068138A1
公开(公告)日：2005-03-31
申请号：US10672658
申请日：2003-09-29
申请人： Kathleen Amm , Evangelos Laskaris , Paul Thompson , Bulent Aksel , Bruce Amm , Michael Palmo , Johannes van Oort , Xianrui Huang
发明人： Kathleen Amm , Evangelos Laskaris , Paul Thompson , Bulent Aksel , Bruce Amm , Michael Palmo , Johannes van Oort , Xianrui Huang
IPC分类号： A61B5/055 , G01R33/383 , H01F1/057 , H01F1/147 , H01F7/02 , H01F7/128 , H01F41/02 , H01F1/00 , G01V3/00 , H01F3/00
CPC分类号： H01F7/128 , G01R33/383 , H01F1/057 , H01F1/147 , H01F7/0278 , H01F41/028
摘要： A permanent magnet assembly for an imaging apparatus having a permanent magnet body having a first surface and a stepped second surface which is adapted to face an imaging volume of the imaging apparatus, wherein the stepped second surface contains at least four steps.
摘要翻译：一种用于成像设备的永磁体组件，具有永磁体，其具有适于面对成像设备的成像体积的第一表面和阶梯状第二表面，其中所述阶梯状第二表面包含至少四个步骤。

3. 发明申请

US20050090403A1 Superconducting wire, method of manufacture thereof and the articles derived therefrom 有权
标题翻译：超导线及其制造方法及其衍生物
公开(公告)号：US20050090403A1
公开(公告)日：2005-04-28
申请号：US10691368
申请日：2003-10-22
申请人： Thomas Raber , Judson Marte , Evangelos Laskaris , Sergio Loureiro , Robert Zabala , Bruce Knudsen , Kathleen Amm , Bruce Amm , James Bray
发明人： Thomas Raber , Judson Marte , Evangelos Laskaris , Sergio Loureiro , Robert Zabala , Bruce Knudsen , Kathleen Amm , Bruce Amm , James Bray
IPC分类号： C01G1/00 , C01B35/04 , H01B12/10 , H01B13/00 , H01L39/14 , H01L39/24 , C10F5/00
CPC分类号： H01L39/2487 , Y10S505/704
摘要： Disclosed herein is method for making a wire comprising contacting a first end of a first superconducting wire with a second end of a second superconducting wire, wherein the superconducting wire comprises a superconducting filament having a superconducting composition comprising magnesium diboride; heating the first end of the first superconducting wire with the second end of the second superconducting wire at a point to form a joint, wherein the superconducting filament having the superconducting composition is in continuous electrical contact with any other part of the superconducting filament after the formation of the joint.
摘要翻译：本文公开了制造线材的方法，包括使第一超导线材的第一端与第二超导线材的第二端接触，其中超导线材包括具有包含二硼化镁的超导组合物的超导细丝; 加热第一超导线的第一端与第二超导线的第二端在一点形成接头，其中具有超导组合物的超导细丝在形成之后与超导细丝的任何其它部分连续电接触的联合。

4. 发明申请

US20050068140A1 Permanent magnet assembly with movable permanent body for main magnetic field adjustable 失效
标题翻译：永磁体组件，具有可动永磁体，用于主磁场调整
公开(公告)号：US20050068140A1
公开(公告)日：2005-03-31
申请号：US10672720
申请日：2003-09-29
申请人： Xianrui Huang , Evangelos Laskaris , Kathleen Amm , Bruce Amm , Michael Palmo
发明人： Xianrui Huang , Evangelos Laskaris , Kathleen Amm , Bruce Amm , Michael Palmo
IPC分类号： A61B5/055 , G01R33/383 , H01F7/02 , G01V3/00
CPC分类号： H01F7/0284 , G01R33/383
摘要： A permanent magnet assembly comprising a fixed permanent magnet body and a movable permanent magnet body which is movable relative to the fixed permanent magnet body.
摘要翻译：一种永磁体组件，包括固定永磁体和相对于固定永磁体可移动的可动永磁体。

5. 发明申请

US20070108979A1 Magnetic resonance imaging system with reduced cooling needs 有权
标题翻译：具有降低冷却需求的磁共振成像系统
公开(公告)号：US20070108979A1
公开(公告)日：2007-05-17
申请号：US11282074
申请日：2005-11-17
申请人： David Ryan , J. Ryan , Evangelos Laskaris , Kathleen Amm , Bruce Knudsen , Judson Marte , Thomas Raber , Robert Zabala , James Bray , Bruce Amm , Sergio Loureiro
发明人： David Ryan , J. Ryan , Evangelos Laskaris , Kathleen Amm , Bruce Knudsen , Judson Marte , Thomas Raber , Robert Zabala , James Bray , Bruce Amm , Sergio Loureiro
IPC分类号： G01V3/00
CPC分类号： G01R33/3815
摘要： A Magnetic Resonance Imaging (MRI) system having a vacuum vessel positioned about an imaging volume, one or more high temperature superconducting coils positioned within the vacuum vessel, and a cryocooler coupled to the vacuum vessel to operate the superconducting coil at a temperature above 10 K. At least one gradient coil is positioned between an imaging volume and the superconducting coil without any thermal shielding interposed between the gradient coil and the superconducting coil.
摘要翻译：具有围绕成像体积定位的真空容器，位于真空容器内的一个或多个高温超导线圈的磁共振成像（MRI）系统和耦合到真空容器的低温冷却器，以在高于10K的温度下操作超导线圈至少一个梯度线圈被定位在成像体积和超导线圈之间，而没有插入梯度线圈和超导线圈之间的任何热屏蔽。

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