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41. 发明授权

US5396206A Superconducting lead assembly for a cryocooler-cooled superconducting magnet 失效
标题翻译：用于低温冷却器超导磁体的超导引线组件
公开(公告)号：US5396206A
公开(公告)日：1995-03-07
申请号：US209287
申请日：1994-03-14
申请人： Kenneth G. Herd , Evangelos T. Laskaris , Paul S. Thompson
发明人： Kenneth G. Herd , Evangelos T. Laskaris , Paul S. Thompson
IPC分类号： H01L39/04 , H01B12/02 , H01F6/00 , H01F6/06 , H01F7/22
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 Copper Oxide) 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，其具有大致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）超导引线的端部灵活，电介质和热连接，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，通常在每平方米180和220安培之间。超导引线本身不会沉淀磁体淬火（即超导引线在超导模式之间的冷端阶段之间不会产生显着的热），并且超导引线将在其他原因引起的猝熄（例如，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。

42. 发明授权

US4642569A Shield for decoupling RF and gradient coils in an NMR apparatus 失效
标题翻译：用于在NMR装置中去耦RF和梯度线圈的屏蔽
公开(公告)号：US4642569A
公开(公告)日：1987-02-10
申请号：US562121
申请日：1983-12-16
申请人： Cecil E. Hayes , Matthew G. Eash
发明人： Cecil E. Hayes , Matthew G. Eash
IPC分类号： G01R33/32 , A61B5/055 , G01R33/36 , G01R33/42 , G01R33/422 , G01R33/48 , G01R33/20
CPC分类号： G01R33/422 , G01R33/42 , Y10S505/844
摘要： A shield for decoupling radio frequency (RF) and magnetic field gradient coils in an NMR apparatus is made up of first and second arrays of electrically conductive regions separated from one another by relatively narrow non-conductive regions. The arrays are disposed on opposite surfaces of a member formed of a high dielectric material. The conductive regions of one array are offset relative to the conductive regions of the other array such that the conductive regions of the one array bridge the non-conductive regions of the other array to form a plurality of capacitive elements. In operation, the capacitive elements act essentially as electrical short-circuits at radio frequencies, but transmit substantially unaffected the homogeneous magnetic field and audio frequencies associated with pulsed magnetic field gradients.
摘要翻译：用于在NMR装置中去耦射频（RF）和磁场梯度线圈的屏蔽由相对窄的非导电区域彼此分开的导电区域的第一和第二阵列组成。阵列设置在由高介电材料形成的构件的相对表面上。一个阵列的导电区域相对于另一个阵列的导电区域偏移，使得一个阵列的导电区域桥接另一阵列的非导电区域以形成多个电容元件。在操作中，电容元件基本上作为无线电频率处的电短路，但基本上不影响与脉冲磁场梯度相关联的均匀磁场和音频。

43. 发明授权

US4638252A Circuit for detecting RF coil assembly position in an MR scanner 失效
标题翻译：用于检测MR扫描仪中RF线圈组件位置的电路
公开(公告)号：US4638252A
公开(公告)日：1987-01-20
申请号：US684553
申请日：1984-12-21
申请人： Kenneth M. Bradshaw
发明人： Kenneth M. Bradshaw
IPC分类号： G01R33/28 , A61B5/05
CPC分类号： G01R33/34046 , G01R33/28 , Y10S505/844
摘要： A circuit for detecting the position of a radio frequency (RF) coil assembly in a magnetic resonance (MR) scanner includes, in the preferred embodiment, a normally closed switch connected to ground in parallel with a PIN diode which forms part of a transmit/receive (T/R) switch used to selectively couple the RF coil assembly to an RF power amplifier and an RF receiver preamplifier. The switch is operable by an actuating rod mounted to the RF coil assembly structure, whose position is to be sensed, such that when the assembly is in place the switch contacts are closed, and open when the assembly is not in place. The opening and closing of the switch shunts the PIN diode in and out, respectively, of the T/R switch circuit, thereby changing the voltage drop across other PIN diodes in the circuit. This change is sensed by a comparator circuit, the output of which is indicative of the RF coil assembly position.
摘要翻译：在优选实施例中，用于检测射频（RF）线圈组件在磁共振（MR）扫描仪中的位置的电路包括：一个常闭开关，其与PIN二极管并联连接，该PIN二极管构成发射/ 接收（T / R）开关，用于选择性地将RF线圈组件耦合到RF功率放大器和RF接收机前置放大器。开关可通过安装到RF线圈组件结构的致动杆来操作，该致动杆的位置将被检测，使得当组件就位时，开关触点闭合，并且当组件不在位时打开。开关的开闭分别将PIN二极管分别导入到T / R开关电路中，从而改变电路中其他PIN二极管的电压降。该变化由比较器电路感测到，其输出指示RF线圈组装位置。

44. 发明授权

US4590428A Electromagnet for NMR tomography 失效
标题翻译：用于核磁共振断层扫描的电磁体
公开(公告)号：US4590428A
公开(公告)日：1986-05-20
申请号：US559868
申请日：1983-12-08
申请人： Wolfgang Muller , Bertold Knuttel
发明人： Wolfgang Muller , Bertold Knuttel
IPC分类号： A61B10/00 , A61B5/055 , G01R33/381 , G01R33/3815 , G01R33/385 , G01R33/3873 , G01R33/3875 , G01R33/421 , H01F6/00 , G01R33/20
CPC分类号： G01R33/3873 , G01R33/381 , G01R33/3815 , G01R33/3875 , G01R33/421 , Y10S505/844
摘要： An electromagnet for generating the constant magnetic field required in NMR tomography includes a superconductive coil system consisting of at least one circular cylindrical field coil (1) and at least one correction coil (2, 3) concentric with the field coil. The coil system is enclosed in a ferromagnetic cylindrical shell (13) whose influence on the homogeneity of the magnetic field is compensated by the particular dimensioning of the field and correction coils. The magnetic field is produced by the coil system (1, 2, 3) in the interior space defined by it, which space is accessible and suitable to receive the body presented for examination. The cylindrical shell (13) may be closed at its ends by ring-shaped ferromagnetic plates (14). The cylindrical shell (13), complete with plates (14), may directly form the exterior wall of the Dewar.
摘要翻译：用于产生NMR层析成像所需的恒定磁场的电磁体包括由至少一个圆柱形磁场线圈（1）和至少一个与励磁线圈同心的校正线圈（2,3）组成的超导线圈系统。线圈系统封装在铁磁性圆柱形壳体（13）中，其对磁场的均匀性的影响由场和校正线圈的特定尺寸补偿。磁场由线圈系统（1,2,3）在由其限定的内部空间中产生，该空间是可接近的并且适于接收呈现用于检查的身体。圆柱形壳体（13）的端部可以由环形铁磁板（14）封闭。具有板（14）的圆柱形壳体（13）可以直接形成杜瓦的外壁。

45. 发明授权

US4528508A Nuclear magnetic resonance method and apparatus for remote detection and volumetric measurement of petroleum reserves 失效
标题翻译：用于远程检测和石油储量体积测量的核磁共振方法和装置
公开(公告)号：US4528508A
公开(公告)日：1985-07-09
申请号：US387198
申请日：1982-06-10
申请人： William B. Vail, III
发明人： William B. Vail, III
IPC分类号： G01R33/24 , G01V3/32 , G01R33/08
CPC分类号： G01R33/24 , G01V3/32 , Y10S505/844
摘要： A new method and apparatus is described which allows remote sensing and in-situ volumetric measurement of liquid petroleum reserves. A small fraction of the nuclear magnetic moments of protons in a liquid oil reserve align in the earth's magnetic field. This nuclear paramagnetism slightly alters the strength of the earth's static magnetic field above the oil reservoir. The size of the paramagnetic contribution to the earth's magnetic field is proportional to the volume of the petroleum reserve. An artificial A.C. magnetic field is applied to the bulk oil reserve at the Larmor frequency. This A.C. magnetic field causes the condition appropriate for nuclear magnetic resonance which under certain circumstances, causes the paramagnetic contribution to the earth's magnetic field to vanish. Different phenomena causing this paramagnetic contribution to vanish include saturation effects and the conditions described by rapid passage.Under these circumstances, frequency sweeping the A.C. magnetic field through magnetic resonance while simultaneously measuring the variation earth's magnetic field yields a direct measure of the total volume of the oil reserve. Numerous means are utilized to produce the appropriate A.C. magnetic field including simply passing an A.C. current through the oil formation between two boreholes. In this case, a sensitive induction magnetometer senses the change in the earth's magnetic field as the A.C. current is frequency swept through resonance. Methods are disclosed which also allow the determination of some characteristic dimensions of the oil deposit. Appropriate measurement of the relaxation of the earth's magnetic field after passage through resonance yields the oil/water ratio under certain circumstances.
摘要翻译：描述了一种新的方法和装置，其允许液体石油储量的遥感和原位体积测量。液态油储存中质子的核磁矩的一小部分在地球的磁场中排列。这种核顺磁性稍微改变了油藏以上地球静磁场的强度。对地球磁场的顺磁贡献的大小与石油储量的成正比。以Larmor频率将人造A.C.磁场施加到散装油储备。这种A.C.磁场导致适合于核磁共振的条件，在某些情况下，导致对地球磁场的顺磁贡献消失。引起这种顺磁贡献的不同现象包括饱和效应和快速通过描述的条件。在这些情况下，通过磁共振频率扫描交流磁场，同时测量地球磁场的变化，可以直接测量储油量。使用许多装置来产生适当的交流磁场，包括简单地使通过两个钻孔之间的油层的交流电流。在这种情况下，敏感感应磁力计可以感测地球磁场的变化，因为交流电流是通过谐振扫频。公开了还允许确定油沉积物的一些特征尺寸的方法。在通过谐振通过后，对地球磁场松弛的适当测量在某些情况下产生油/水比。

46. 发明授权

US4511841A Method and apparatus for high speed magic angle spinning 失效
标题翻译：高速魔角旋转的方法和装置
公开(公告)号：US4511841A
公开(公告)日：1985-04-16
申请号：US389449
申请日：1982-06-17
申请人： Victor J. Bartuska , David H. Lewis , Robin B. Lewis , David G. Dalbow
发明人： Victor J. Bartuska , David H. Lewis , Robin B. Lewis , David G. Dalbow
IPC分类号： G01R33/30 , G01R33/08
CPC分类号： G01R33/307 , Y10S505/844
摘要： A nuclear magnetic resonance spinning apparatus includes an elongated cylindrical sample rotor with slotted air vanes on one tapered end thereof, an axial stator air drive and air end bearing, and a lateral ring air bearing around the opposite end of the rotor. The lateral end bearing retains the spinning axis at a precise pre-set angle, and the slotted air vanes are designed for high speed, low pressure applications. An adjustable cradle support mounts the spinning apparatus in a manner that allows convenient spin angle adjustment, and an insulated probe is provided with a convenient access opening and door structure for access to the spinning apparatus mounted therein.
摘要翻译：核磁共振纺丝装置包括细长的圆柱形样品转子，在其一个锥形端具有开槽空气叶片，轴向定子空气驱动器和空气端轴承以及围绕转子相对端的侧向环形空气轴承。侧端轴承将纺纱轴线保持在精确的预设角度，并且开槽的叶片设计用于高速，低压应用。一个可调节支架支架以一种允许方便旋转角度调整的方式安装纺纱设备，并且绝缘探针设置有方便的进出口和门结构，用于接近安装在其中的纺纱设备。

47. 发明授权

US4498048A NMR Imaging apparatus 失效
标题翻译： NMR成像装置
公开(公告)号：US4498048A
公开(公告)日：1985-02-05
申请号：US587848
申请日：1984-03-12
申请人： Denny L. Y. Lee , Robert D. Hay
发明人： Denny L. Y. Lee , Robert D. Hay
IPC分类号： G01R33/48 , A61B5/055 , G01R33/383 , G01R33/387 , H01F7/02 , G01R33/08
CPC分类号： G01R33/383 , Y10S505/844
摘要： An NMR imaging apparatus is described having a desired imaging volume for imaging of biological tissue, said apparatus comprising bias means 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, each dipole ring magnet comprising a plurality of segments, each segment comprising an oriented, anisotropic permanent magnet material 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.
摘要翻译：描述了具有用于生物组织成像的所需成像体积的NMR成像设备，所述设备包括用于产生偏置场的偏置装置，用于产生梯度场的装置，以及用于将电磁辐射脉冲施加到生物组织的射频装置，用于检测从所述组织发射的合成信号; 其中所述偏置装置包括多个偶极环磁体，每个偶极环磁体包括多个段，每个段包括布置在环中的取向的各向异性永磁体材料，使得存在基本上连续的永磁体材料环; 其中至少一个偶极环磁体的内半径与相邻的偶极环磁体的内半径不同。

48. 发明授权

US4446430A Sample spinner for nuclear magnetic resonance spectrometer 失效
标题翻译：核磁共振光谱仪样品旋转器
公开(公告)号：US4446430A
公开(公告)日：1984-05-01
申请号：US297594
申请日：1981-08-31
申请人： Edward O. Stejskal
发明人： Edward O. Stejskal
IPC分类号： F02C1/02 , G01R33/30 , G01R33/08
CPC分类号： G01R33/307 , Y10S505/844
摘要： A sample spinner for a nuclear magnetic resonance spectrometer having improved operating characteristics is described comprising a rotor supported at both ends by support gas bearings and positioned by a thrust gas bearing. Improved support gas bearings are also described which result in a spinner exhibiting long-term stable operation characteristics.
摘要翻译：描述了具有改进的操作特性的用于核磁共振光谱仪的样品旋转器，其包括通过支撑气体轴承在两端支撑并由推力气体轴承定位的转子。还描述了改进的支撑气体轴承，其导致具有长期稳定操作特性的旋转器。

49. 发明授权

US4259638A Apparatus for inducing nuclear magnetic resonance within flowing mediums including superconducting coils 失效
标题翻译：用于在包括超导线圈的流动介质内诱导核磁共振的装置
公开(公告)号：US4259638A
公开(公告)日：1981-03-31
申请号：US949095
申请日：1978-10-06
申请人： Gottfried J. Krueger
发明人： Gottfried J. Krueger
IPC分类号： G01F1/716 , G01N27/00
CPC分类号： G01F1/716 , Y10S505/844
摘要： Apparatus including a superconducting magnetic assembly for inducing nuclear magnetic resonance within a flowing medium. In order to make nuclear magnetic resonance measurements on a flowing medium it is preferred to have separate polarizing and resonating fields situated consecutively along the flow path, with the magnetic flux density in the resonating region being reduced from that in the previous polarizing region.The signal to noise ratio in such a system is improved by increasing the magnetic flux density in the polarizing region as much as possible. Using superconducting coils to provide the magnetic fields a lighter assembly with increased polarizing field strength over that of an equivalent iron-cored electromagnet is obtained. The geometry of the coil windings establishes the field differences, the lower field region being in consequence of any combination of an increased coil spacing, greater coil width or reduced number of turns on the portion of windings corresponding to the resonating field region. Homogeneity of the field regions is enhanced by the ends of each set of windings being upturned.
摘要翻译：包括用于在流动介质内诱导核磁共振的超导磁性组件的装置。为了在流动介质上进行核磁共振测量，优选地具有沿着流动路径连续定位的分离的偏振和谐振场，其中谐振区域中的磁通密度与先前偏振区域中的磁通密度相比减小。通过尽可能地增加极化区域的磁通密度来提高这种系统中的信噪比。使用超导线圈提供磁场，获得了比相当的铁芯电磁体更高的偏振场强度的更轻的组件。线圈绕组的几何形状确定了场差，下场区由于对应于谐振场区域的绕组部分增加的线圈间隔，更大的线圈宽度或减少的匝数的任何组合而产生。通过每组绕组的端部被翻转，增强了场区域的均匀性。

50. 发明专利

JP2013118228A Superconductive electromagnet device, cooling method of the same, and magnetic resonance imaging apparatus 有权
标题翻译：超导电子装置，其冷却方法和磁共振成像装置
公开(公告)号：JP2013118228A
公开(公告)日：2013-06-13
申请号：JP2011264015
申请日：2011-12-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： AOKI MANABU , ANDO TATSUYA , MURATA YUKIHIRO , NAKAGAWA RYUJI
IPC分类号： H01F6/04 , A61B5/055 , G01R33/3815 , H01F6/02
CPC分类号： H01F6/04 , G01R33/3804 , G01R33/3815 , H01F6/02 , Y10S505/844 , Y10S505/85 , Y10S505/879 , Y10S505/893
摘要： PROBLEM TO BE SOLVED: To provide a superconductive electromagnet device which achieves excellent cooling performance and good usability, a cooling method of the superconductive electromagnet device, and a magnetic resonance imaging apparatus.SOLUTION: A superconductive electromagnet device is formed so as to include: a coolant circulation passage 6 where a coolant R is circulated; a refrigerator 12 cooling vapor of the coolant R in the coolant circulation passage 6; a superconductive coil 4 cooled by the circulating coolant R; a protection resistor 10 which is placed in thermal contact with the superconductive coil 4 and has an internal space S; a high-boiling coolant supply part 22 supplying a high-boiling coolant, which has higher boiling point than the coolant R and is frozen by the coolant R, to the internal space S of the protection resistor 10; a vacuum insulation container 2 which houses at least the coolant circulation passage, the superconductive coil 4, and the protection resistor 10.
摘要翻译：要解决的问题：提供一种实现优异的冷却性能和良好的可用性的超导电磁体装置，超导电磁体装置的冷却方法和磁共振成像装置。解决方案：超导电磁体装置形成为包括：冷却剂循环通道6，其中冷却剂R循环; 制冷剂12冷却剂循环通道6中的冷却剂R的冷却蒸汽; 由循环冷却剂R冷却的超导线圈4; 保护电阻器10，其与超导线圈4热接触并具有内部空间S; 向沸腾冷却剂R提供高沸点冷却剂的高沸点冷却剂供应部分22，该高沸点冷却剂具有比冷却剂R更高的沸点并被冷却剂R冻结到保护电阻器10的内部空间S; 至少容纳冷却剂循环通道的真空绝热容器2，超导线圈4和保护电阻10.版权所有（C）2013，JPO＆INPIT

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