公开(公告)号：EP2406651A1

公开(公告)日：2012-01-18

申请号：EP10709339.5

申请日：2010-03-10

申请人： Time Medical Holdings Company Limited

发明人： MA, Qiyuan ,  GAO, Erzhen

IPC分类号： G01R33/3815 ,  G01R33/385

CPC分类号： G01R33/3815 ,  G01R33/34023 ,  G01R33/3403 ,  G01R33/3804 ,  G01R33/385 ,  G01R33/3856

摘要： Methods and apparatuses for magnetic resonance imaging (MRI) and/or magnetic resonance spectroscopy comprising a superconducting main magnet operable to generate a uniform magnetic field in an examination region, at least one superconducting gradient field coil operable to apply a respective at least one magnetic field gradient within the examination region, and at least one RF coil that is operable to transmit and receive radio frequency signals to and from the examination region, and that is configured for cooling and comprises at least one of (i) a non-superconducting material that when cooled to a temperature below room temperature has a conductivity higher than that of copper at that temperature and (ii) a superconducting material. The main magnet, the gradient coils, and each of the at least one RF coil of a given system may each be implemented as high temperature superconductor materials.

公开(公告)号：EP2332153A1

公开(公告)日：2011-06-15

申请号：EP09787153.7

申请日：2009-09-09

申请人： Koninklijke Philips Electronics N.V.

发明人： KAGAN, Alexander ,  REIS, Chandra, T.

IPC分类号： H01F6/04 ,  F17C13/10 ,  F25D21/08 ,  G01R33/3815

CPC分类号： H01F6/04 ,  F25D19/00 ,  F25D21/08 ,  G01R33/3804 ,  G01R33/3815

摘要： A cryogenic system comprises: a liquid helium vessel containing liquid helium (LHe) in which are immersed superconducting magnet windings (20); a helium condenser (30); a neck (32) providing fluid communication between the liquid helium vessel and the helium condenser; a heater (42) disposed outside of and not surrounding the neck; and a thermally conductive passive deicing member (50) disposed in the neck, the thermally conductive passive deicing member thermally coupled with the heater to conduct heat from the heater into the neck. A deicing method for deicing a neck (32) of a liquid helium vessel of a superconducting magnet system comprises generating heat at a location (30, 42) outside of the neck and conducting an amount of the generated heat effective for deicing the neck from outside of the neck through an opening of the neck and into the neck to deice the neck.

公开(公告)号：EP2295998A1

公开(公告)日：2011-03-16

申请号：EP09169950.4

申请日：2009-09-10

申请人： Koninklijke Philips Electronics N.V. ,  Philips Intellectual Property & Standards

发明人： The designation of the inventor has not yet been filed

IPC分类号： G01R33/28 ,  A61K49/06 ,  A61B5/055 ,  G01R33/62 ,  G01R33/3815

CPC分类号： G01R33/282 ,  A61B5/055 ,  A61M5/007 ,  G01N24/12 ,  G01R33/31 ,  G01R33/3815 ,  G01R33/3873

摘要： A magnetic resonance imaging system (100) adapted for acquiring magnetic resonance images comprising:
- a magnet (102) adapted for generating a magnetic field (262) for orientating the magnetic spins of nuclei of a subject (104) located within an imaging region (108),
- a polarizer (120) adapted for polarizing a hyperpolarizable contrast agent (484), wherein the polarizer is located within a polarization field region (118) of the magnetic field of the magnet,
- a radio frequency system (110) comprising a coil (114) adapted for acquiring magnetic resonance imaging data from the hyperpolarizable contrast agent,
- a magnetic field gradient coil (114) adapted for spatial encoding the magnetic spins of nuclei,
- a magnetic field gradient coil power supply (116) adapted for supplying current to the magnetic field gradient coil,
- a computer system (130) adapted for constructing images from the magnetic resonance imaging data and for controlling the operation of the magnetic resonance imaging system.

摘要翻译： 一种适于获取磁共振图像的磁共振成像系统（100），包括： - 磁体（102），适于产生磁场（262），用于使位于成像区域内的对象（104）的核的磁自旋定向 108）， - 偏振器（120），其适于偏振超极化造影剂（484），其中所述偏振器位于所述磁体的磁场的偏振场区域（118）内;射频系统（110），包括 适于从所述超极化造影剂获取磁共振成像数据的线圈（114）， - 适于对核的磁自旋进行空间编码的磁场梯度线圈（114）， - 磁场梯度线圈电源（116），适于 向磁场梯度线圈提供电流; - 计算机系统（130），适于构建来自磁共振成像数据的图像并用于控制磁共振成像 系统。

公开(公告)号：EP1990648A3

公开(公告)日：2010-11-10

申请号：EP08008146.6

申请日：2008-04-29

申请人： Bruker BioSpin AG

发明人： Venturini, Francesca ,  Schauwecker, Robert ,  Bovier, Pierre-Alain

IPC分类号： G01R33/3815 ,  G01R33/60 ,  H01F6/00

CPC分类号： G01R33/3815 ,  G01R33/3802 ,  G01R33/445 ,  G01R33/60 ,  H01F6/00

摘要： Eine Magnetanordnung (M, M', M", M"') zur Erzeugung eines Magnetfeldes in Richtung einer z-Achse in einem auf der z-Achse um z=0 angeordneten Arbeitsvolumen (V) mit einem Magnetspulensystem (A, A', A", A"'), welches ein oder mehrere supraleitende Magnetteilspulensysteme (A1, A1', A1", A1"', A2"', ..., An"') umfasst, welche im Betriebszustand je supraleitend kurzgeschlossene Strompfade bilden, und mit einem weiteren Spulensystem (C, C', C", C"'), welches unabhängig vom Magnetspulensystem (A, A', A", A"') geladen oder entladen werden kann, und welches ein erstes und ein zweites Teilspulensystem (C1, C2, C1' C2', C1", C2", C1"', C2"') umfasst, wobei das erste Teilspulensystem (C1, C1', C1", C1"') und das zweite Teilspulensystem (C2, C2', C2", C2"') mindestens je eine Spule umfassen, wobei alle Spulen des weiteren Spulensystems (C, C', C", C"') miteinander in Serie geschaltet sind, wobei g C eff , diamag > 0.1 ⁢ mT / A , ist dadurch gekennzeichnet, dass g C ⁢ 1 eff , diamag > 0.1 ⁢ mT / A , g C ⁢ 2 eff , diamag > 0.1 ⁢ mT / A , g C ⁢ 1 eff , class g C ⁢ 1 eff , diamag ∉ 0.95 1.05 , g C ⁢ 2 eff , class g C ⁢ 2 eff , diamag ∉ 0.95 1.05 wobei g C eff , class g C eff , diamag ∉ 0.95 1.05
Auf diese Weise kann durch das weitere Spulensystem (C,C',C'',C''') eine im Wesentlichen lineare Feldänderung im Arbeitsvolumen in Abhängigkeit von der Stromänderung im weiteren Spulensystem (C, C', C", C"') realisiert werden, wie sie beispielsweise für die ESR / EPR erforderlich ist.

公开(公告)号：EP2169414A2

公开(公告)日：2010-03-31

申请号：EP09009787.4

申请日：2009-07-29

申请人： Varian, Inc.

发明人： Burns, Sean T.

IPC分类号： G01R33/34 ,  G01R33/3815

CPC分类号： G01R33/30 ,  G01R33/31 ,  G01R33/34023 ,  G01R33/3403 ,  G01R33/34069 ,  G01R33/34092 ,  G01R33/3804

摘要： In some embodiments, a NMR spectrometer includes a NMR probe circuit component (e.g. RF coil insert, capacitor, inductor) in thermal and electrical contact with a cryogenically-cooled NMR probe support through a collet assembly (40). The collet assembly (40) includes a collet assembly body (80) connected to the probe support, a collet (82) inserted into the collet assembly body (80), a pin (88) connected to the probe circuit component, and a nut threaded over a back of the collet (82) to secure the pin (88) to the collet. The collet assembly body (80) is connected to the probe circuit component and the pin is connected to the probe support. A heat exchanger may be in thermal contact with the probe support. The collet assembly (40) provides a demountable, compact, reliable, low-resistance, and strong thermal and electrical connection particularly suited for use in NMR probes, which are commonly subject to stringent spatial and other NMR-compatibility design constraints.

摘要翻译： 在一些实施例中，NMR波谱仪包括与通过夹头组件（40）一个低温冷却NMR探头支撑的热和电接触的探针NMR电路组件（例如RF线圈插入件，电容器，电感器）。 夹头组件（40）包括连接到所述探测器支承的夹头组件体部（80），一个夹头（82）插入到筒夹总成本体（80），连接到探针电路部件的销（88），和一个螺母 拧在筒夹（82）的销（88）固定到所述筒夹的背面。 夹头组件体（80）被连接到所述探针电路部件和销被连接到探针支撑。 热交换器可以是与样品支持热接触。 夹头组件（40）提供一可拆卸的，紧凑的，可靠的，低电阻，和强的热连接和电连接特别适合于在NMR探头，它们通常受到严格的空间和其他NMR兼容性设计约束的使用。

公开(公告)号：EP1376148B1

公开(公告)日：2009-10-21

申请号：EP03010065.5

申请日：2003-05-03

申请人： Bruker BioSpin AG

发明人： Amann, Andreas ,  Schauwecker, Robert ,  Bovier, Pierre-Alain

IPC分类号： G01R33/3815 ,  G01R33/421

CPC分类号： G01R33/421 ,  G01R33/3815

公开(公告)号：EP1618403B1

公开(公告)日：2009-01-14

申请号：EP04730583.4

申请日：2004-04-30

申请人： OXFORD INSTRUMENTS PLC

发明人： MCDOUGALL, Ian Leitch ,  HANLEY, Peter

IPC分类号： G01R33/38 ,  G01R33/3875 ,  G01R33/3815

CPC分类号： G01R33/381 ,  G01R33/3815 ,  G01R33/3875

摘要： An apparatus for magnetic resonance imaging, comprises a first magnet for generating a first magnetic field and a second magnet for generating a second magnetic field, dissimilar to the first magnetic field, the second magnet being spaced apart from the first magnet. The apparatus is arranged such that the first and second magnets cooperate to generate a substantially homogeneous magnetic field defining a working region wherein the first and second magnetic fields are arranged asymmetrically with respect to the working region, and wherein at least part of the working region is positioned within the first magnet or between the first and second magnets.

公开(公告)号：EP1949391A1

公开(公告)日：2008-07-30

申请号：EP06808756.8

申请日：2006-11-16

申请人： Magnex Scientific Ltd.

发明人： BURGESS, Stephen ,  KERLEY, Nicholas William

IPC分类号： H01F6/04 ,  F17C3/08 ,  F17C13/00 ,  G01R33/3815

CPC分类号： G01R33/3815 ,  F17C2270/0527 ,  H01F6/04

摘要： A superconducting magnet system comprises an annular cryogenic vessel (1) having an outer vacuum container (2) and containing a superconducting magnet (3) within an annular reservoir (4) containing liquid helium. A cryocooler (5) has a first stage (7) linked by a thermal link (9) to a thermal shield (6) within the vacuum space surrounding the reservoir (4) and a second stage (8) that serves to recondense evaporating helium gas from the reservoir (4). In the absence of special measures, such a cryocooled shield (6) would warm up quickly in the event of a power failure and would radiate heat onto the reservoir (4) causing all of the liquid helium to evaporate. However an inertial shield (11) is provided between the reservoir (4) and the thermal shield (6) in such a position that the outgoing helium gas from the reservoir (4) carries away the heat being transferred to the inertial shield (11) from the thermal shield (6) and thus slows down the rate at which the thermal inertial shield (11) warms up. Such a system does not require cryogenic fluid refilling at intervals and is less sensitive to the effect of a power failure or malfunction than existing systems.

公开(公告)号：EP1923713A1

公开(公告)日：2008-05-21

申请号：EP07254422.4

申请日：2007-11-09

申请人： Hitachi, Ltd.

发明人： Chiba, Tomoo, c/o Hitachi, Ltd. ,  Takayama, Kunihiro, c/o Hitachi, Ltd. ,  Yokoyama, Jun, c/o Hitachi Kyowa Engineering Co., Ltd.

IPC分类号： G01R33/38 ,  G01R33/3815

CPC分类号： G01R33/3815 ,  G01R33/3804 ,  G01R33/3806

摘要： A superconductive magnet device (1) includes a pair of coil vessels (10A, 10B) configured to house a plurality of superconductive coils (2) formed circularly, together with a refrigerant (4); a pair of vacuum vessels (1A, 1B) configured to house the coil vessels in the vacuum vessels, respectively; a pair of supports (7C, 7D) configured to connect the vacuum vessels to each other in a state of the vacuum vessels being faced to each other in an up and down direction, wherein a space between the vacuum vessels is made into a uniform magnetic field space; and a refrigerator (20) and a power lead port (30) configured to be provided at an upper portion of one vacuum vessel (1A) positioned upper than the other, wherein the refrigerator is disposed above one support (7C), and the power lead port is disposed above the other support (7D).

摘要翻译： 超导磁体装置（1）包括一对线圈容器（10A，10B），其被配置为与制冷剂（4）一起容纳多个形成为圆形的超导线圈（2）; 一对真空容器（1A，1B），所述一对真空容器（1A，1B）构造成分别容纳真空容器中的盘管容器; 一对支撑件（7C，7D），其构造成在真空容器在上下方向上彼此面对的状态下将真空容器彼此连接，其中真空容器之间的空间被制成均匀的磁性 场地空间; 以及配置成设置在位于上方的一个真空容器（1A）的上部的电冰箱（20）和电力引线端口（30），其中所述电冰箱布置在一个支撑件（7C）的上方，并且所述电力 引线端口设置在另一个支撑件（7D）的上方。

公开(公告)号：EP1895315A2

公开(公告)日：2008-03-05

申请号：EP07016519.6

申请日：2007-08-23

申请人： Bruker BioSpin AG

发明人： Gilardi, Raffaele ,  Schneider, Stefan ,  Schauwecker, Robert ,  Bovier, Pierre-Alain

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

CPC分类号： G01R33/3815 ,  G01R33/288 ,  G01R33/3802 ,  G01R33/3806 ,  H01F6/06 ,  H01F7/202 ,  H01F27/306 ,  Y10S505/879

摘要： Eine Magnetanordnung mit einem Magnetspulensystem (M) mit zwei Spulensystemen (C, D), die in je einem um die z-Achse positionierten Behälter (B1, B2) angeordnet sind, die mechanisch durch einen Spalt (G) axial voneinander getrennt sind, wobei die Spulensysteme (C, D) jeweils ein erstes (C1, D1) und ein zweites Teilspulensystem (C2, D2) umfassen, wobei die ersten Teilspulensysteme (C1, D1) zum Spalt (G) hinziehenden (K C1 , K D1 ), und die zweiten Teilspulensysteme (C2, D2) vom Spalt (G) forttreibenden magnetischen Kräften (K C2 , K D2 ) ausgesetzt sind, und mit mindestens einer auf Druck belastbaren mechanischen Struktur (E1, E2) im Spalt (G), die einen Teil der hinziehenden magnetischen Kräfte (K C1 , K D1 ) aufnimmt, ist dadurch gekennzeichnet, dass im Spalt (G) radial innerhalb der Abmessungen der Behälter (B1, B2) eine mechanische Struktur (H1) vorgesehen ist, die in z-Richtung mechanisch auf Zug belastbar ist, einen Teil der in axialer Richtung forttreibenden magnetischen Kräfte (K C2 , K D2 ) aufnimmt, mit den Behältern (B1, B2) verbunden ist und diese zusammenhält. Mit der erfindungsgemäßen Magnetanordnung können die magnetischen Kräfte besser beherrscht werden. Gleichzeitig kann ein kostengünstiger, Platz und Gewicht sparenden Aufbau realisiert werden.

摘要翻译： 该装置具有用于在z轴方向上产生磁场并具有布置在彼此分离的相应容器（B1，B2）中的两个线圈系统（C，D）的电磁线圈系统。 每个线圈系统具有暴露于相应磁力（KC2，KD2）的部分线圈系统（C1，D1，C2，D2），其中力被机械传递到容器。 机械结构（H1）径向地设置在间隙中并且可在z方向上机械地加载。 该结构容纳部分磁力并与容器相连。