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    • 11. 发明授权
    • Method for immunochemical determination of hapten
    • HAPTEN免疫组织化学测定方法
    • US5202269A
    • 1993-04-13
    • US592612
    • 1990-10-04
    • Michio ItoMinoru OguraHideki Kohno
    • Michio ItoMinoru OguraHideki Kohno
    • G01N33/53G01N33/543
    • G01N33/54313G01N33/54333Y10S436/817Y10S436/822
    • A method for immunochemical determination of a hapten in a sample is disclosed, in which(A) a high-molecular compound to which the hapten is bound (reagent A),(B) insoluble carrier particles carrying thereon an antibody to the hapten (reagent B), and(C) magnetic substance-containing insoluble carrier particles carrying thereon an antibody to an antigenic determinant in the high-molecular compound and different from the hapten (reagent C),are used. These three reagents are dispersed in the sample, then, a magnetic field is applied to separate from the reaction mixture unreacted reagent (C) and agglutinated particles formed from the reagent (B) and the reagent (C) through the reagent (A). The amount of the reagent (B) remaining dispersed in the reaction mixture is measured, thereby determining the extent of competitive inhibition to the agglutination of the reagent (B) and the reagent (C) through the reagent (A) by the reaction between the hapten in the sample and the reagent (B). The method of the present invention requires no troublesome operations such as separation-washing and is free from any problem is safety. By the method of the present invention, the concentration of a hapten in a sample is determined by simple operations in a short time and with high sensitivity.
    • 12. 发明授权
    • Flow imaging method by means of an MRI apparatus and apparatus for
realizing same
    • 通过MRI装置和实现其的装置的流动成像方法
    • US5195524A
    • 1993-03-23
    • US647563
    • 1991-01-29
    • Kenji TakiguchiEtsuji YamamotoHideki Kohno
    • Kenji TakiguchiEtsuji YamamotoHideki Kohno
    • G01P13/00A61B5/026A61B5/055G01R33/44G01R33/48G01R33/563
    • A61B5/0263G01R33/56308G01R33/5635G01R33/56366
    • An MRI flow imaging method and apparatus wherein a width of a relevant region in a direction is set, in which fluid in a subject body flows, and a first 90.degree. radio frequency pulse is applied thereto to excite selectively a relevant region; a gradient magnetic field is applied thereto in a direction, in which it is desired to project the fluid, after an application of a first 90.degree. radio frequency pulse so that a magnetization signal in a projection direction is zero, a second radio frequency pulse is applied to a relevant region to excite the relevant region selectively, after new fluid has poured in the relevant region, an echo signal is measured by applying an encoding gradient magnetic field and a reading out gradient magnetic field in a form of a flow sensitive pulse capable of detecting an echo signal from the fluid, and an echo signal is processed to obtain a two-dimensional image of the fluid.
    • 一种MRI流程成像方法和装置,其中设定了被检体内的流体流过的朝向方向的相关区域的宽度,并且向其施加第一90°射频脉冲以选择性地激发相关区域; 在施加第一90°射频脉冲之后,在期望投射流体的方向上施加梯度磁场,使得投影方向上的磁化信号为零,第二射频脉冲为 应用于相关区域以选择性地激发相关区域,在新流体流入相关区域之后,通过施加编码梯度磁场和读出梯度磁场来测量回波信号,其形式为流敏脉冲能力 检测来自流体的回波信号,并且处理回波信号以获得流体的二维图像。
    • 13. 发明授权
    • Multi-echo NMR imaging method
    • 多回波核磁共振成像方法
    • US5162737A
    • 1992-11-10
    • US807625
    • 1991-12-13
    • Tatsuo NozokidoEtsuji YamamotoHideki Kohno
    • Tatsuo NozokidoEtsuji YamamotoHideki Kohno
    • G01R33/485G01R33/54G01R33/565
    • G01R33/4828G01R33/485G01R33/56563
    • A multi-echo NMR imaging method of obtaining images separated from each other with respect to two kinds of chemical shifts, typically, a fat image and a water image, includes performing the measurement of an object to be examined through a multi-echo sequence in which phase differences of .theta..sub.1 .noteq.n.pi. and .theta..sub.2 =2n.pi. (n=.+-.1, .+-.2, ---) are respectively produced for first and second echoes between two kinds of spins to be separated from each other, deriving first and second complex images of the object from the first and second echoes, respectively, performing the measurement of a phantom exhibiting one of the chemical shifts through the multi-echo sequence and deriving third and fourth complex images of the phantom, eliminating phase errors due to a static magnetic field inhomogeneity from the first and second images using phase data of the third and fourth images respectively, and eliminating phase error due to a magnetic permeability distribution to the object.
    • 一种多回波核磁共振成像方法,通过多个回波序列来获得相对于两种化学位移(通常为脂肪图像和水分图像)彼此分离的图像,包括: 分别产生用于从每一个分离出的两种旋转之间的第一和第二回波的θ1的相位差分别为n pi和theta 2 = 2n pi(n = + / - 1,+/- 2,...) 另外,分别从第一和第二回波导出对象的第一和第二复合图像,执行通过多回波序列显示化学位移之一的体模的测量,并导出体模的第三和第四复合图像,消除 分别使用第三和第四图像的相位数据从第一和第二图像的静态磁场不均匀性引起的相位误差,并消除由于对物体的磁导率分布引起的相位误差。
    • 14. 发明授权
    • Nuclear magnetic resonance imaging method
    • 核磁共振成像法
    • US5045791A
    • 1991-09-03
    • US492121
    • 1990-03-13
    • Etsuji YamamotoHideki Kohno
    • Etsuji YamamotoHideki Kohno
    • A61B5/055G01R33/48G01R33/54G01R33/561
    • G01R33/561G01R33/54
    • A three-dimensional NMR imaging method using phase encoding field gradients along two direction is disclosed. The measurement of an NMR signal is repeated in such a manner that among all combinations of a plurality of magnitudes of gradient prepared for the phase encoding field gradient along one of the two directions and a plurality of magnitudes of gradient prepared for the phase encoding field gradient along the other direction, combinations in which the magnitude of the phase encoding field gradient along the one direction is not larger than a predetermined value, are selected preceding the remaining combinations. A first image reconstruction processing is performed for data trains acquired on the basis of the precedently selected combinations, thereby obtaining a crude image. The crude image is displayed to confirm whether the location of measurement is proper or not. After the confirmation, the remaining combinations are successively selected to continue the measurement of the NMR signal and a second image reconstruction processing is performed for all of data trains acquired, thereby obtaining a detailed image.
    • 公开了使用沿两个方向的相位编码场梯度的三维NMR成像方法。 NMR信号的测量以这样的方式重复:在沿着两个方向中的一个方向为相位编码场梯度准备的多个梯度大小的所有组合和为相位编码场梯度准备的多个梯度的量值 沿着另一方向,在剩余组合之前选择其中沿着一个方向的相位编码场梯度的幅度不大于预定值的组合。 对基于先前选择的组合获取的数据列执行第一图像重构处理,从而获得粗图像。 显示粗图像以确认测量位置是否适当。 在确认之后,依次选择剩余的组合以继续NMR信号的测量,并对所获取的所有数据列执行第二图像重建处理,从而获得详细的图像。
    • 17. 发明授权
    • NMR imaging method
    • NMR成像方法
    • US4740749A
    • 1988-04-26
    • US56951
    • 1987-06-03
    • Etsuji YamamotoHideki Kohno
    • Etsuji YamamotoHideki Kohno
    • A61B10/00A61B5/055G01R33/32G01R33/48G01R33/54G01R33/56G06T1/00G01R33/20
    • G01R33/482G01R33/56
    • In an imaging method called spin warp method in which a measuring sequence inclusive of nuclear spin excitation, application of phase-encoding gradient field, and measurement of NMR signals under the application of read-out gradient field, is repeated while changing the phase-encoding amount, and a data train thus obtained is subjected to the two-dimensional inverse Fourier transformation to reconstruct a magnetization distribution image of an object, wherein an NMR imaging method is characterized in that measurement of NMR signals is repeated a plural number of times for a particular phase-encoding amount only among many phase-encoding amounts, a plurality of NMR signals thus obtained are added up together and are averaged, and the data obtained by the addition and averaging is subjected to the two-dimensional inverse Fourier transformation.
    • 在改变相位编码的同时,重复在包括核自旋激发,包含相位编码梯度场的测量序列和读出梯度场应用中的NMR信号测量的称为自旋翘曲方法的成像方法中 数量和这样获得的数据序列进行二维傅立叶逆变换,以重构物体的磁化分布图像,其中NMR成像方法的特征在于,对于一​​个或多个核磁共振信号的NMR信号的测量重复多次, 特定相位编码量仅在许多相位编码量之中,将这样获得的多个NMR信号相加在一起并将其平均,并且通过加法和平均获得的数据进行二维傅里叶逆变换。
    • 18. 发明授权
    • Method of measuring the static magnetic field distribution in an NMR
inspection system
    • 在NMR检查系统中测量静态磁场分布的方法
    • US4672318A
    • 1987-06-09
    • US696909
    • 1985-01-31
    • Kensuke SekiharaEtsuji YamamotoShigeru MatsuiHideki Kohno
    • Kensuke SekiharaEtsuji YamamotoShigeru MatsuiHideki Kohno
    • G01R33/20A61B5/055A61B10/00G01R33/24G01R33/38G01R33/387
    • G01R33/24
    • A method of measuring a static magnetic field distribution in a nuclear magnetic resonance (NMR) inspection system which comprises magnetic field generator for producing a static magnetic field, inclination or gradient magnetic fields and a high-frequency magnetic field, a signal detector for sensing nuclear magnetic resonance signals from an inspection sample, a computer for processing output signals from the signal detector and an output device for providing a computational result of the computer, wherein a time interval t.sub.1 from the center of a 90.degree.-pulse high-frequency magnetic field to the center of a 180.degree.-pulse high-frequency magnetic field is made different by a time difference t.sub.0 from a time interval t.sub.2 from the center of the 180.degree.-pulse high-frequency magnetic field to a peak of a spin echo, so that static magnetic field distribution is calculated based on the computer output which corresponds to the difference of the two time intervals.
    • 一种在核磁共振(NMR)检查系统中测量静磁场分布的方法,其包括用于产生静磁场,倾斜或梯度磁场和高频磁场的磁场发生器,用于感测核的信号检测器 来自检查样本的磁共振信号,用于处理来自信号检测器的输出信号的计算机和用于提供计算机的计算结果的输出装置,其中从90°脉冲高频磁场的中心起的时间间隔t1 从180°脉冲高频磁场的中心到从180°脉冲高频磁场的中心到自旋回波的峰值的时间间隔t2由时间差t0变化到180°脉冲高频磁场的中心,因此 基于对应于两个时间间隔的差的计算机输出来计算静态磁场分布。