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82. 发明专利

JPS61111448A Probe for nuclear magnetic resonance spectral method with atleast one surface coil 失效
标题翻译：具有ATLEAST ONE SURFACE COIL的核磁共振光谱法探测
公开(公告)号：JPS61111448A
公开(公告)日：1986-05-29
申请号：JP17776085
申请日：1985-08-14
申请人： Gen Electric
发明人： POORU AASAA BOTOMUREI
IPC分类号： G01R33/48 , A61B5/055 , A61B10/00 , G01N27/30 , G01R33/32 , G01R33/341 , G01R33/36 , G01R33/483
CPC分类号： G01R33/3635 , G01R33/34007 , G01R33/341 , G01R33/3415 , G01R33/422 , G01R33/4831 , Y10S505/844
摘要： An NMR spectroscopy body probe is comprised of at least one surface coil, each coil having at least one turn and positioned adjacent to a first surface of an insulative member; an electric-field-reducing shield is fabricated upon the other surface of the relatively flexible substrate. The shield surface of the probe is to be positioned closest to the sample. A plurality of surface coil-bearing substrates can be stacked, one adjacent to the other with the planes thereof substantially parallel to each other and to the plane of the electric-field shield, and with each individual surface coil being separately tunable to a different nuclei species resonance frequency. Each surface coil can be utilized for both transmission and reception, or can be used for only reception of the re-radiated signal from the sample, with a separate excitation coil being provided with a radius substantially greater than the average radius of the (receiver) surface coil and positioned in the plane of any of the at least one receiving surface coils.

83. 发明专利

JPS60194340A Gradient magnetic field coil for nuclear spin tomographic device 失效
标题翻译：用于核磁共振成像装置的梯度磁场线圈
公开(公告)号：JPS60194340A
公开(公告)日：1985-10-02
申请号：JP3138485
申请日：1985-02-19
申请人： Siemens Ag
发明人： ARUNORUFU MAURAA , HORUSUTO JIIBORUTO
IPC分类号： A61B10/00 , A61B5/055 , G01R33/20 , G01R33/385 , H01F5/00 , H01F7/20
CPC分类号： H01F7/20 , G01R33/385 , G01R33/3854 , Y10S505/844
摘要： The gradient coil system for a nuclear spin tomography installation encloses a hollow cylindrical support body, the cylinder axis of which extends in the z direction of an orthogonal x-y-z coordinate system with the coordinate origin in the imaging center, in which direction also the magnetic field Bz of a base generating a field gradient Gz, at field magnet is oriented. The gradient coil system contains for least two ring-shaped individual coils which are arranged symmetrically to the x-y plane extending through the imaging center, and furthermore, pairs of saddle-shaped individual coils arranged symmetrically to this plane, for generating field gradients Gx and Gy. In this gradient coil system, the sound level caused in the hollow cylindrical support body is reduced by rigidly connecting the prefabricated Gx and Gy gradient coils which lie on one side relative to the x-y symmetry plane to each other to form self-supporting partial baskets and by means of several non-magnetic carrier elements extending in the z direction forming a common self-supporting coil basket from these partial baskets to which the prefabricated Gz gradient coils are fastened; and attaching this coil basket to the carrier body via insulating elastic support elements.

84. 发明公开

EP0673043A1 Superconducting lead assembly for a cryocooler-cooled superconducting magnet 失效
标题翻译： SupraleitendeZuführungfüreinentieftemperaturgekühltensupraleitenden Magnet。
公开(公告)号：EP0673043A1
公开(公告)日：1995-09-20
申请号：EP95301498.2
申请日：1995-03-08
申请人： GENERAL ELECTRIC COMPANY
发明人： Herd, Kenneth Gordon , Laskaris, Evangelos Trifon , Thompson, Paul Shadforth
IPC分类号： H01F6/06 , H01F6/02 , F17C13/00
CPC分类号： H01F6/065 , Y10S505/844 , Y10S505/879 , Y10S505/893
摘要： A superconducting magnet lead assembly for a cryocooler-cooled superconducting magnet having a design current of between generally 50 and 250 amperes. A DBCO (Dysprosium Barium Copper Oxide), YBCO (Yttrium Barium Copper Oxide), or BSCCO (Bismuth Strontium Calcium Carbonate) superconducting lead has its ends flexibly, dielectrically, and thermally connected, one end to the generally 30 to 50 Kelvin first stage and the other end to the generally 8 to 30 Kelvin second stage of the cryocooler coldhead. The superconducting lead has a generally constant cross-sectional area along its length. The design current, the lead's length, and the lead's cross-sectional area are chosen such that the design current times the lead's length divided by the lead's cross-sectional area is between generally 720 and 880 amperes per centimeter for a DBCO or YBCO lead and is between generally 180 and 220 amperes per centimeter for a BSCCO lead. The superconducting lead will not itself precipitate a magnet quench (i.e., the superconducting lead does not conduct significant heat between the coldhead stages during the superconductive mode), and the superconducting lead will survive a lead quench from other causes (i.e., the superconducting lead does conduct the resistive heat buildup to the coldhead stages during a lead quench) and thus be acceptable for commercial applications.
摘要翻译：一种用于低温冷却超导磁体的超导磁体引线组件，其具有通常为50和250安培之间的设计电流。 DBCO（氧化镝钡氧化物），YBCO（钇钡氧化铜）或BSCCO（铋锶钙氧化铜）超导导线的端部灵活，介电和热连接，一端通常为30至50开尔文第一级另一端通常是低温冷冻机的8〜30开尔文第二阶段。超导引线沿其长度具有大致恒定的横截面积。选择设计电流，引线长度和引线的横截面积，使得引线长度除以引线横截面积的设计电流乘以DBCO或YBCO引线的通常为720至880安培/厘米，对于BSCCO铅，通常在每厘米180和220安培之间。超导引线本身不会沉淀出磁体淬火（即，超导引线在超导模式下在冷端级之间不会产生显着的热），并且超导引线将从其他原因引发淬火（即，超导引线在铅淬火期间对冷头阶段进行电阻积热），因此对于商业应用是可以接受的。

85. 发明授权

EP0171741B1 NMR Spectroscopy body probes with at least one surface coil 有权转让
标题翻译：具有至少一个表面线圈的NMR光谱体系探针
公开(公告)号：EP0171741B1
公开(公告)日：1991-07-17
申请号：EP85109903.6
申请日：1985-08-06
申请人： GENERAL ELECTRIC COMPANY
发明人： Bottomley, Paul Arthur
IPC分类号： G01R33/34 , G01R33/36
CPC分类号： G01R33/3635 , G01R33/34007 , G01R33/341 , G01R33/3415 , G01R33/422 , G01R33/4831 , Y10S505/844

86. 发明授权

EP0120927B1 NMR IMAGING APPARATUS 失效
标题翻译： NMR成像装置
公开(公告)号：EP0120927B1
公开(公告)日：1990-12-27
申请号：EP83903331.3
申请日：1983-09-23
申请人： E.I. DU PONT DE NEMOURS AND COMPANY
发明人： LEE, Denny, L.Y. , HAY, Robert, Duncan
IPC分类号： G01R33/24 , G01N24/08 , A61B5/055
CPC分类号： G01R33/383 , Y10S505/844
摘要： An NMR imaging apparatus (10) having a desired imaging volume for imaging of biological tissue, said apparatus comprising bias means (20) for generating a bias field, means for generating gradient fields, and radio frequency means for applying a pulse of electromagnetic radiation to the biological tissue and for detecting the resultant signals emitted from said tissue; wherein said bias means comprises a plurality of dipole ring magnets, (20) each dipole ring magnet comprising a plurality of segments, (22) each segment comprising an oriented, anisotropic permanent magnet material (23) arranged in a ring so that there is a substantially continuous ring of permanent magnet material; wherein the inner radius of at least one dipole ring magnet is different from the inner radius of an adjacent dipole ring magnet.

87. 发明授权

EP0175789B1 THERMAL BARRIER FOR VARIABLE TEMPERATURE NMR 失效
标题翻译：用于可变温度NMR的热障
公开(公告)号：EP0175789B1
公开(公告)日：1989-05-31
申请号：EP85902724.5
申请日：1985-02-19
申请人： VARIAN ASSOCIATES, INC.
发明人： LAUDERMILCH, John, R.
IPC分类号： G01N24/04 , G01R33/24
CPC分类号： G01R33/31 , Y10S505/844
摘要： An NMR system for obtaining high resolution spectroscopic measurements at a selected temperature includes gradient correcting means (40) disposed in proximity to an NMR probe (32), for imposing desired gradients on the volume occupied by the sample (35) within the probe (32). A heat exchange gas is impelled through a heat exchanger (33) and then surrounds the sample (35) to bring the sample (35) to the desired temperature. A thermal barrier (72), innocuous to RF excitation and of relatively low magnetic susceptibility protects the gradient correcting means (40) from drift due to heat exchange with the heat exchanging gas.

88. 发明公开

EP0299325A1 Aktiv geschirmter, supraleitender Magnet eines Kernspin-Tomographen 失效
标题翻译： Aktiv geschirmter，supraleitender Magnet eines Kernspin-Tomographen。
公开(公告)号：EP0299325A1
公开(公告)日：1989-01-18
申请号：EP88110664.5
申请日：1988-07-04
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： Reichert, Thomas, Dipl.-Phys.
IPC分类号： H02H7/00 , H01F7/22
CPC分类号： H02H7/001 , H01F6/006 , Y02E40/68 , Y10S336/01 , Y10S505/844 , Y10S505/879 , Y10S505/88
摘要： Das innere (1a) und äußere Spulensystem (1b) eines aktiv geschirmten, supraleitenden Magneten eines Kernspin-Tomographen werden in Serie geschaltet, um beim Quench eines Spulensystems (1a,1b) ein erhöhtes Streufeld zu vermeiden. Dadurch werden äußere Magnetfeldstörungen nicht mehr vom Inneren des Spulensystems (1) abgeschirmt. Aufgabe der Erfindung ist es, einerseits beim Quench des inneren (1a) oder es äußeren Spulensystems (1b) ein erhöhtes Streufeld zu vermeiden, andererseits im Normalbetrieb äußere, zeit-lich veränderliche Magnetfelder vom Inneren des Spulensystems (1) abzuschirmen.
Bei dem erfindungsgemäßen aktiv geschirmten, supraleitenden Spulensystem (1) wird ein supraleitender Strombegrenzer (2) mit geringer kritischer Stromtragfähigkeit in das Spulensystem (1) geschaltet zum Führen eines Differenzstromes zwischen innerem (1a) und äußerem Spulensystem (1b). Dadurch bleibt die Abschirmwirkung gegen äußere Magnetfeldstörungen erhalten. Um im Quenchfall eine unzulässige Erhöhung des Streufeldes zu vermeiden, wird der Strombegrenzer (2) bei Überschreiten einer vorgegebenen Stromdifferenz normalleitend und begrenzt damit die Stromdifferenz zwischen innerem (1a) und äußerem Spulensystem (1b).
摘要翻译：为了避免在对线圈系统（1a，1b）进行淬火时增加的散射场，磁共振成像器的主动屏蔽的超导磁体的内部（1a）和外部线圈系统（1b）串联连接。结果，外部磁场干扰不再从线圈系统（1）的内部屏蔽。本发明的一个目的是为了避免在淬火内部（1a）或外部线圈系统（1b）时增加的散射场，另一方面，从外部线圈系统（1b）屏蔽外部时间可变的磁场，线圈系统（1）的内部正常运行。在根据本发明的主动屏蔽的超导线圈系统（1）中，具有低临界电流容量的超导限流器（2）连接到线圈系统（1）中以承载内部（1a）和外部线圈系统（1b）之间的差动电流。因此，保持了对外部磁场干扰的屏蔽效果。为了避免在淬火的情况下散射场的不可接受的增加，当超过预定的电流差时，限流器（2）变得通常导通，因此限制了内部（1a）和外部线圈系统之间的电流差（图1b）。 ... ...

89. 发明公开

EP0210562A3 Methods for overcoming transient magnetic field inhomogeneity in nuclear magnetic resonance imaging 失效
标题翻译：在核磁共振成像中覆盖瞬态磁场非均质的方法
公开(公告)号：EP0210562A3
公开(公告)日：1987-09-09
申请号：EP86109943
申请日：1986-07-19
申请人： GENERAL ELECTRIC COMPANY
发明人： Bottomley, Paul Arthur
IPC分类号： G01N24/08
CPC分类号： G01R33/482 , G01R33/385 , G01R33/56518 , Y10S505/844
摘要： Methods for overcoming transient magnetic field gradient inhomogeneity in a nuclear magnetic resonance imaging and/or nuclear magnetic resonance spectroscopic imaging system, wherein the inhomogeneities are induced by the pulsed magnetic field gradients utilized in the imaging process itself, provide at least one correction pulse signal during, or after, any application of the desired magnetic field to the sample-to-be-investigated in the system. At least one of the pulse signal characteristics is adjusted to oppose and sub- etantially cancel an error-producing portion of the total magnetic field gradient in a particular direction. The magnetic field gradient correction signal(s) can be applied: during a non- asiective RF pulse; immediately subsequent to an initial gradient field application (either alone or coincident with a select i ve 180° RF pulse); during acquisition of response signal data; or at anytime to correct for inter-gradient cross-talk conditions.
摘要翻译：用于克服核磁共振成像和/或核磁共振光谱成像系统中的瞬态磁场梯度不均匀性的方法，其中所述不均匀性由在成像过程本身中使用的脉冲磁场梯度引起，在至少一个校正脉冲信号期间提供至少一个校正脉冲信号或之后，将所需磁场的任何应用应用于在系统中要被研究的样品。脉冲信号特性中的至少一个被调整为与特定方向上的总磁场梯度的误差产生部分相对并且基本上消除。可以应用磁场梯度校正信号：在非选择性RF脉冲期间; 紧随着初始梯度场施加（单独或与选择性180°RF脉冲一致）; 在获取响应信号数据期间; 或在任何时候纠正梯级间串扰条件。

90. 发明授权

EP0094734B1 Capacitively shortened coaxial resonators for nuclear magnetic resonance signal reception 失效
标题翻译：用于核磁共振信号接收的电容式松弛同轴共振器
公开(公告)号：EP0094734B1
公开(公告)日：1987-01-21
申请号：EP83301171.1
申请日：1983-03-04
申请人： The University of South Carolina
发明人： Doty, Françis David
IPC分类号： G01N24/04
CPC分类号： G01R33/34046 , G01R33/307 , G01R33/34007 , G01R33/34092 , G01R33/345 , G01R33/3628 , G01R33/56536 , Y10S505/844 , Y10S505/866

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