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11 条记录 (耗时 0.027 秒)

    Apparatus for unilateral generation of a homogeneous magnetic field
    1.
    发明授权
    Apparatus for unilateral generation of a homogeneous magnetic field 失效
    用于单向产生均匀磁场的装置

    公开(公告)号：US4721914A

    公开(公告)日：1988-01-26

    申请号：US605950

    申请日：1984-05-01

    申请人： Eiichi Fukushima ,  Alan R. Rath ,  Stephen B. W. Roeder

    发明人： Eiichi Fukushima ,  Alan R. Rath ,  Stephen B. W. Roeder

    IPC分类号： G01R33/38 ,  G01R33/3875 ,  H01F7/20 ,  G01R33/20

    CPC分类号： G01R33/3808 ,  G01R33/3875 ,  H01F7/20

    摘要： An apparatus for unilaterally producing a substantially homogeneous magnetic field. The apparatus includes two circular electromagnet coils, a small coil and a large coil, which are coaxial with one another and which are separated by a distance equal to one-half the difference in the radius of the two coils. By appropriate selection of electrical currents, which are passed through the coil in opposite directions, a region of homogeneous magnetic field is formed. This region is centered on the common axis of the two coils, at a point on the axis which is at a distance from the small coil equal to one-half the radius of the small coil, and which is on the opposite side of the small coil from the large coil. The apparatus has particular application in the field of diagnostic medical NMR and other NMR applications.

    摘要翻译： 一种用于单方面产生基本上均匀的磁场的装置。 该装置包括两个圆形电磁体线圈，一个小线圈和一个大的线圈，它们彼此同轴并且被隔开距离等于两个线圈的半径的差的一半的距离。 通过适当地选择沿相反方向通过线圈的电流，形成均匀磁场的区域。 该区域以两个线圈的共轴为中心，在距离小线圈一定距离处的轴上的点等于小线圈的半径的一半，并且位于小线圈的相反侧 线圈从大线圈。 该装置在诊断医学NMR和其他NMR应用领域具有特别的应用。

    Nuclear magnetic resonance apparatus having semitoroidal rf coil for use in topical NMR and NMR imaging
    2.
    发明授权
    Nuclear magnetic resonance apparatus having semitoroidal rf coil for use in topical NMR and NMR imaging 失效
    具有用于局部NMR和NMR成像的semitoroidal rf线圈的核磁共振装置

    公开(公告)号：US4590427A

    公开(公告)日：1986-05-20

    申请号：US479581

    申请日：1983-03-28

    申请人： Eiichi Fukushima ,  Stephen B. W. Roeder ,  Roger A. Assink ,  Atholl A. V. Gibson

    发明人： Eiichi Fukushima ,  Stephen B. W. Roeder ,  Roger A. Assink ,  Atholl A. V. Gibson

    IPC分类号： A61B10/00 ,  A61B5/055 ,  G01R33/34 ,  G01R33/483 ,  G01R33/20

    CPC分类号： G01R33/34053 ,  G01R33/4831 ,  Y10S505/844

    摘要： An improved nuclear magnetic resonance (NMR) apparatus for use in topical magnetic resonance (TMR) spectroscopy and other remote sensing NMR applications includes a semitoroidal radio-frequency (rf) coil. The semitoroidal rf coil produces an effective alternating magnetic field at a distance from the poles of the coil, so as to enable NMR measurements to be taken from selected regions inside an object, particularly including human and other living subjects. The semitoroidal rf coil is relatively insensitive to magnetic interference from metallic objects located behind the coil, thereby rendering the coil particularly suited for use in both conventional and superconducting NMR magnets. The semitoroidal NMR coil can be constructed so that it emits little or no excess rf electric field associated with the rf magnetic field, thus avoiding adverse effects due to dielectric heating of the sample or to any other interaction of the electric field with the sample.

    摘要翻译： 用于局部磁共振（TMR）光谱学和其他遥感NMR应用的改进的核磁共振（NMR）装置包括半静态射频（RF）线圈。 该半导体线圈线圈产生与线圈两极距离的有效交变磁场，以便能够从物体内的特定区域（特别是包括人类和其他活体）中选出NMR测量。 对于位于线圈后面的金属物体的磁干扰，该半静态线圈相对不敏感，从而使线圈特别适用于常规和超导NMR磁体。 可以构造该血管内核磁共振线圈，以使其发射与rf磁场相关的很少或没有过剩的rf电场，从而避免由于样品的介电加热或电场与样品的任何其它相互作用而引起的不利影响。

    Surface NMR coil for thin samples
    3.
    发明授权
    Surface NMR coil for thin samples 有权
    薄样品的表面NMR线圈

    公开(公告)号：US09103889B1

    公开(公告)日：2015-08-11

    申请号：US13536719

    申请日：2012-06-28

    申请人： Eiichi Fukushima

    发明人： Eiichi Fukushima

    IPC分类号： G01V3/00 ,  G01R33/3415 ,  G01R33/341

    CPC分类号： G01R33/341 ,  G01R33/3415 ,  G01R33/3642

    摘要： There is disclosed a flat NMR (nuclear magnetic resonance) coil system especially adapted for evaluating thin samples of material(s), or samples in which a thin surface region of the sample is to be examined. The apparatus and method work well in a static magnetic field oriented generally perpendicular to the planes of the flat sample and coil. In one preferred mode, the coil is located approximately parallel to (and generally proximate to or in flush contact with) the surface of the subject sample, while the coil typically also is oriented so that the flux of the strong static field for performing the NMR is approximately normal to the planes of the coil and the sample surface. The coil has a wire path routed to define at least one continuous “figure eight” double loop arrangement, to improve operational performance of the complete coil.

    摘要翻译： 公开了一种特别适用于评价材料的薄样品或其中要检查样品的薄表面区域的样品的扁平NMR（核磁共振）线圈系统。 该装置和方法在通常垂直于扁平样品和线圈的平面取向的静态磁场中工作良好。 在一个优选的模式中，线圈位于主体样品表面大致平行于（并且大体上接近或与其接触或与其接触），而线圈通常也被定向成使得用于进行NMR的强静电场的通量 大致垂直于线圈和样品表面的平面。 线圈具有布线以限定至少一个连续的“图八”双环布置的线路，以改善整个线圈的操作性能。

    DETECTION OF MATERIAL WITHIN A REGION OF THE EARTH USING NUCLEAR MAGNETIC RESONANCE
    6.
    发明申请
    DETECTION OF MATERIAL WITHIN A REGION OF THE EARTH USING NUCLEAR MAGNETIC RESONANCE 审中-公开

    公开(公告)号：US20190107590A1

    公开(公告)日：2019-04-11

    申请号：US16131444

    申请日：2018-09-14

    申请人： Eiichi Fukushima ,  Mark S. Conradi ,  Stephen A. Altobelli ,  Hans Thomann

    发明人： Eiichi Fukushima ,  Mark S. Conradi ,  Stephen A. Altobelli ,  Hans Thomann

    IPC分类号： G01R33/3415 ,  G01V3/14 ,  G01R33/44 ,  G01R33/483

    摘要： Provided are systems, methods, and apparatus for using nuclear magnetic resonance (NMR) to detect a first material in the presence of a second material within a region of the Earth and within a static magnetic field (such as Earth's magnetic field). These inventions are uniquely suited to detect NMR signals from materials remotely located from a measurement device (e.g., below ice with the device above the ice). They are further useful in detecting first material having relatively short spin-lattice (T1) relaxation time in the presence of second material having longer T1 relaxation time (and therefore slower response to applied magnetic fields). Two pre-polarization currents are used to create pre-polarization magnetic fields stronger than the static magnetic field, each applied over a period of time between the first material's T1 relaxation time and the second material's T1 relaxation time, enabling different ways to null the NMR signal from the second material.

    Method and System for Detection of a Material within a Region of the Earth
    8.
    发明申请
    Method and System for Detection of a Material within a Region of the Earth 审中-公开
    用于检测地球区域内的材料的方法和系统

    公开(公告)号：US20160291191A1

    公开(公告)日：2016-10-06

    申请号：US15035491

    申请日：2013-12-04

    申请人： Eiichi Fukushima ,  Stephen A. Altobelli ,  Hans Thomann

    发明人： Eiichi Fukushima ,  Stephen A. Altobelli ,  Hans Thomann

    IPC分类号： G01V3/14 ,  G01R33/3415 ,  G01R33/46 ,  G01R33/44

    CPC分类号： G01V3/14 ,  G01R33/3415 ,  G01R33/445 ,  G01R33/4616 ,  G01R33/4838

    摘要： Methods and systems for detecting a material within a region of the Earth are provided. The region may be under a surface of earthen formation, ice, snow, or water. The method may be practiced in a variety of applications, for example in an arctic region to detect oil spills, leaks, or seepages. The methods and systems may include using at least one coil to transmit a radio frequency (RF) excitation signal into the region of the Earth; and receive any NMR response signals to determine the presence of the material of interest.

    摘要翻译： 提供了用于检测地球区域内的材料的方法和系统。 该地区可能处于土层形成，冰，雪或水的表面。 该方法可以在各种应用中实施，例如在北极地区，以检测漏​​油，泄漏或渗漏。 方法和系统可以包括使用至少一个线圈将射频（RF）激励信号传输到地球的区域; 并接收任何NMR响应信号以确定感兴趣的材料的存在。

    Microcoil magnetic resonance detectors
    9.
    发明授权
    Microcoil magnetic resonance detectors 有权
    微线圈磁共振探测器

    公开(公告)号：US08143896B2

    公开(公告)日：2012-03-27

    申请号：US12257238

    申请日：2008-10-23

    申请人： Andrew F McDowell ,  Eiichi Fukushima ,  Victor Esch ,  Meghan Norvell ,  Laurel Sillerud

    发明人： Andrew F McDowell ,  Eiichi Fukushima ,  Victor Esch ,  Meghan Norvell ,  Laurel Sillerud

    IPC分类号： G01V3/00

    CPC分类号： G01N24/088 ,  G01N24/08 ,  G01N33/54333 ,  G01R33/302 ,  G01R33/307 ,  G01R33/465 ,  G01R33/4808

    摘要： The present invention provides microcoil magnetic resonance based modules, detection devices, and methods for their use. In certain embodiments, the invention provides a module including a microcoil possessing an inner diameter of between 25 microns and 550 microns, a conduit disposed proximate to the microcoil, in which the conduit is in fluid communication with a sample reservoir, an affinity column in fluid communication with the conduit and the sample reservoir, and a connector for connecting the module to a magnetic resonance detector.

    摘要翻译： 本发明提供了基于微线圈磁共振的模块，检测装置及其使用方法。 在某些实施方案中，本发明提供了一种模块，其包括具有介于25微米至550微米之间的内径的微线圈，靠近微线圈设置的导管，其中导管与样品容器流体连通，流体中的亲和柱 与导管和样品容器的连通，以及用于将模块连接到磁共振检测器的连接器。