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    • 52. 发明申请
    • FLOW-THROUGH PROBE FOR NMR SPECTROMETERS
    • 用于NMR光谱仪的流通探测器
    • WO01020357A1
    • 2001-03-22
    • PCT/IL2000/000558
    • 2000-09-12
    • G01R33/20G01R33/30G01R33/31G01R33/34G01R33/46G01V3/00
    • G01R33/31G01R33/34092
    • There is disclosed an NMR probe including a body defining an internal chamber. This chamber is adapted for supporting a vacuum and the body is of a non-magnetic material. A conduit extends through the chamber in the body. The conduit has a first portion in communication with second portions, the first portion being intermediate the second portions, with the first and second portions of non-magnetic materials with substantially equal thermal expansion coefficients. An RF coil is positioned along at least a substantial portion of the first conduit portion. It is preferred that this device also include a field or frequency lock unit in the chamber, as well as a getter, to allow for degassing in the chamber to maintain the preferred high pressure vacuum. A method of using this NMR probe for NMR analysis is also disclosed.
    • 公开了一种NMR探针,其包括限定内腔的主体。 该室适于支撑真空并且本体是非磁性材料。 导管延伸穿过体内的腔室。 导管具有与第二部分连通的第一部分,第一部分在第二部分之间,非磁性材料的第一和第二部分具有基本相等的热膨胀系数。 RF线圈沿着第一导管部分的至少大部分被定位。 优选地,该装置还包括腔室中的场或频率锁定单元以及吸气剂,以允许室中的脱气以保持优选的高压真空。 还公开了使用该NMR探针进行NMR分析的方法。
    • 55. 发明申请
    • METHOD
    • 方法
    • WO99052564A1
    • 1999-10-21
    • PCT/GB1999/001097
    • 1999-04-09
    • A61K49/18G01R33/46A61K49/00G01R33/58G01N24/08
    • A61K49/105A61K49/1806A61K49/1863G01R33/46
    • This invention relates to a method of measuring magnetic properties of water-insoluble particulate materials, in particular particulate magnetic resonance (mr) contrast agents. The method comprises disposing said sedimentable agent in a flowable aqueous solution of a polyalkyleneoxide-based matrix forming agent, optionally cooling the resulting dispersion to form a non-flowable aqueous dispersion of said sedimentable agent, measuring a magnetic property of said dispersion, and if desired calculating from the measured magnetic property a magnetic property of said agent or said dispersion. The method is useful in mr imaging applications.
    • 本发明涉及一种测量水不溶性颗粒材料,特别是颗粒磁共振(mr)造影剂的磁性能的方法。 该方法包括将所述可沉降剂置于可流动的聚亚烷基氧化物基质形成剂的水溶液中,任选地冷却所得分散体以形成所述可沉降试剂的不可流动的水性分散体,测量所述分散体的磁性,以及如果需要 从所测量的磁性能计算所述试剂或所述分散体的磁性。 该方法在mr成像应用中非常有用。
    • 56. 发明申请
    • NMR APPARATUS AND METHOD FOR NON-INVASIVE IN VIVO TESTING OF A PATIENT'S BODY FLUID GLUCOSE LEVELS
    • 核磁共振装置和患者体内液体葡萄糖水平检测非侵入性的方法
    • WO9932897A3
    • 1999-09-10
    • PCT/US9827478
    • 1998-12-23
    • AMERICAN BIOTECHNOLOGY WORKGRO
    • ANDERSON MARVIN HSCHLEICH THOMAS WJOHN BOBAN KSCHOOLERY JAMES N
    • G01N24/08A61B5/055G01R33/383G01R33/3873G01R33/46
    • G01R33/383
    • A magnet assembly (10) for a small scale NMR spectroscopy apparatus suitable for laboratory or home use, comprising two permanent magnets (11) facing one another, a tapered pole cap (12) on each of the two facing surfaces of the permanent magnets, and a plurality of radially polarized annular canceling magnets (18) disposed about the permanent magnets and pole caps. The design and position of the radially polarized canceling magnets reduces leakage of the magnetic field, to maintain the magnetic field strength and homogeneity within the test region, without a disadvantageous increase in the size, weight and cost of the NMR apparatus. Also provided is a method for in vivo measurement of glucose concentration in a patient's body fluid using NMR spectroscopy. The method comprises spectral editing, e.g. double quantum filtering to isolate scalar coupled resonances of glucose.
    • 一种用于适用于实验室或家庭使用的小型NMR光谱仪的磁体组件(10),包括彼此面对的两个永磁体(11),在永磁体的两个相对表面中的每一个上的锥形极盖(12) 以及围绕永磁体和极帽设置的多个径向极化的环形取消磁体(18)。 径向偏振消除磁体的设计和位置减小磁场的泄漏,以保持测试区域内的磁场强度和均匀性,而不增加NMR装置的尺寸,重量和成本。 还提供了使用NMR光谱法体内测量患者体液中葡萄糖浓度的方法。 该方法包括光谱编辑,例如 双量子滤波来分离葡萄糖的标量耦合共振。
    • 58. 发明申请
    • MAGNETIC RESONANCE METHOD AND DEVICE FOR DETERMINING A PERFUSION IMAGE
    • 用于确定灌注图像的磁共振方法和装置
    • WO99031522A1
    • 1999-06-24
    • PCT/IB1998/001897
    • 1998-11-30
    • A61B5/055G01R33/46G01R33/48G01R33/563
    • G01R33/446G01R33/56341
    • The invention relates to a magnetic resonance method for determining a perfusion image of a portion, which method comprises the following steps: generation of a control pulse sequence in a first portion of the body and measurement of a control data set by generation of an MR-image sequence for imaging of a third portion of the body, generation of a labelling pulse sequence in a second portion of the body wherein a fluid flows towards the third portion, and measurement of the labelled data set by generation of the MR-image sequence for imaging the third portion of the body, and reconstruction of the perfusion image of the fluid in a mass of the third portion of the body from a combination of the control data set and the labelled data set. In order to reduce the geometric restrictions and compensate magnetic transfer effects, the labelling pulse sequence comprises a first selective RF pulse and a second RF pulse, the control pulse sequence comprises the first selective RF pulse and a third RF pulse, a phase of the second RF pulse being opposite to that of the third RF pulse.
    • 本发明涉及一种用于确定部分的灌注图像的磁共振方法,该方法包括以下步骤:在身体的第一部分中产生控制脉冲序列,并通过生成MR- 用于对身体的第三部分进行成像的图像序列,在身体的第二部分中产生标记脉冲序列,其中流体朝向第三部分流动,以及通过生成MR图像序列来测量标记数据集, 成像身体的第三部分,以及从控制数据集合和标记数据集合的组合中重建身体第三部分的质量的流体的灌注图像。 为了减少几何限制并补偿磁转移效应,标记脉冲序列包括第一选择性RF脉冲和第二RF脉冲,所述控制脉冲序列包括第一选择性RF脉冲和第三RF脉冲,第二RF相位 RF脉冲与第三RF脉冲的RF脉冲相反。