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1. 发明授权

US5598453A Method for X-ray fluoroscopy or radiography, and X-ray apparatus 失效
标题翻译： X光透视或X线检查方法，X射线装置
公开(公告)号：US5598453A
公开(公告)日：1997-01-28
申请号：US517852
申请日：1995-08-22
申请人： Rika Baba , Ken Ueda , Kensuke Sekihara , Hironori Ueki , Keiji Umetani
发明人： Rika Baba , Ken Ueda , Kensuke Sekihara , Hironori Ueki , Keiji Umetani
IPC分类号： A61B6/03 , G21K5/10
CPC分类号： A61B6/032 , A61B6/0457
摘要： An X-ray apparatus for collecting X-ray transmission data of a subject from a plurality of directions to generate an X-ray transmission image or X-ray CT image of the subject, which includes an X-ray generator for generating an X-ray, an X-ray detector for detecting a transmission X-ray after the X-ray generated by the X-ray generator is transmitted through the subject, a rotation unit for rotating an imaging unit including the X-ray generator and the X-ray detector around the subject, a data collector for converting an output signal of the X-ray detector to a digital signal and collecting the digital signal, a signal processor for subjecting data collected by the data collector to a signal processing operation, a display for displaying thereon as an image the data collected by the data collector and the data subjected by the signal processor to the signal processing operation, and a position change unit for moving a relative position of a rotation center of the imaging unit and the subject in a direction parallel to a rotation plane of the rotation, and wherein the imaging unit is rotated by the rotator around the subject and at the same time the relative position is changed by the position change unit in a direction parallel to the rotation plane to perform X-ray fluoroscopic or radiographic operation or CT scan.
摘要翻译：一种用于从多个方向收集被检体的X射线透射数据的X射线装置，以生成被检体的X射线透射图像或X射线CT图像，该X射线透射图像或X射线CT图像包括：X射线发生器，用于检测由X射线发生器产生的X射线之后的透射X射线的X射线检测器被传送通过对象，旋转单元，用于旋转包括X射线发生器和X射线发射器的成像单元，射线检测器，用于将X射线检测器的输出信号转换为数字信号并收集数字信号的数据收集器，用于对由数据收集器收集的数据进行信号处理操作的信号处理器，用于将由数据收集器收集的数据和由信号处理器经受的数据作为图像显示在信号处理操作上;以及位置改变单元，用于移动成像单元的旋转中心和su的相对位置在平行于旋转的旋转平面的方向上进行，并且其中成像单元由旋转体围绕被摄体旋转，同时位置改变单元在与旋转平面平行的方向上改变相对位置，执行X射线透视或放射照相术或CT扫描。

2. 发明授权

US6051834A Electron microscope 失效
标题翻译：电子显微镜
公开(公告)号：US6051834A
公开(公告)日：2000-04-18
申请号：US126432
申请日：1998-07-30
申请人： Hiroshi Kakibayashi , Yasuhiro Mitsui , Hideo Todokoro , Katsuhiro Kuroda , Masanari Koguchi , Kazutaka Tsuji , Tatsuo Makishima , Mikio Ichihashi , Shigeto Isakozawa , Ruriko Tsuneta , Kuniyasu Nakamura , Kensuke Sekihara , Jun Motoike
发明人： Hiroshi Kakibayashi , Yasuhiro Mitsui , Hideo Todokoro , Katsuhiro Kuroda , Masanari Koguchi , Kazutaka Tsuji , Tatsuo Makishima , Mikio Ichihashi , Shigeto Isakozawa , Ruriko Tsuneta , Kuniyasu Nakamura , Kensuke Sekihara , Jun Motoike
IPC分类号： H01J37/26 , H01J37/28
CPC分类号： H01J37/28 , H01J2237/226 , H01J2237/2802 , H01J2237/2807
摘要： 3-dimensional observation on the atomic arrangement and atomic species in a thin-film specimen are carried out at high speed and accuracy by an electron microscope which measures electrons emitted at high angle from the specimen. A scanning transmission electron microscope has an electron detection device comprising a scintillator converting electrons detected thereby to photons, a photoconductive-film converting photons from the scintillator detected thereby to c.a. 1000 times as many electron-hole pairs as these photons.
摘要翻译：通过电子显微镜高速准确地进行薄膜样品中的原子排列和原子物质的三维观察，该电子显微镜测量从试样以高角度发射的电子。扫描透射电子显微镜具有电子检测装置，该电子检测装置包括将由此检测的电子转化为光子的闪烁体，从其检测的闪烁体的光电导膜转换光子至c.a. 这些光子是电子 - 空穴对的1000倍。

3. 发明授权

US4672318A Method of measuring the static magnetic field distribution in an NMR inspection system 失效
标题翻译：在NMR检查系统中测量静态磁场分布的方法
公开(公告)号：US4672318A
公开(公告)日：1987-06-09
申请号：US696909
申请日：1985-01-31
申请人： Kensuke Sekihara , Etsuji Yamamoto , Shigeru Matsui , Hideki Kohno
发明人： Kensuke Sekihara , Etsuji Yamamoto , Shigeru Matsui , Hideki Kohno
IPC分类号： G01R33/20 , A61B5/055 , A61B10/00 , G01R33/24 , G01R33/38 , G01R33/387
CPC分类号： G01R33/24
摘要： 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.
摘要翻译：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。

4. 发明授权

US5848114A Computerized tomography system 失效
标题翻译：计算机断层摄影系统
公开(公告)号：US5848114A
公开(公告)日：1998-12-08
申请号：US821539
申请日：1997-03-21
申请人： Hiroyuki Kawai , Kensuke Sekihara , Nagaaki Ohyama , Masahiro Yamaguchi , Takashi Obi
发明人： Hiroyuki Kawai , Kensuke Sekihara , Nagaaki Ohyama , Masahiro Yamaguchi , Takashi Obi
IPC分类号： A61B6/03 , G06T11/00
CPC分类号： G06T11/003 , Y10S378/901
摘要： A computerized tomography system including an X-ray source for emitting X-rays in a cone-beam shape, a two-dimensional X-ray image acquirer which is arranged so as to face the X-ray source and acquires an image of an object by using the X-rays; and rotator for rotating the X-ray source and the two-dimensional x-ray image acquirer around the object, wherein a three-dimensional reconstructed image is formed from the projection images acquired by the two-dimensional X-ray image acquirer while rotating the rotator. An iterative reconstruction calculator for forming the three-dimensional reconstructed image from the projection images is provided. The three-dimensional reconstructed image without artifacts can be acquired from a small amount of projection data.
摘要翻译：包括用于发射锥形束X射线的X射线源的计算机断层摄影系统，被配置为面对X射线源并获取对象的图像的二维X射线图像获取器通过使用X射线; 旋转器，用于将X射线源和二维X射线图像获取器旋转到物体周围，其中由二维X射线图像获取器获取的投影图像形成三维重建图像，同时旋转旋转器提供了一种用于从投影图像形成三维重建图像的迭代重建计算器。可以从少量的投影数据获取无伪像的三维重建图像。

5. 发明授权

US5426365A Method and system for determining electromotive force or impressed current distribution in an object based on magnetic field distribution measured outside the object 失效
标题翻译：基于在物体外部测量的磁场分布来确定物体中的电动势或外加电流分布的方法和系统
公开(公告)号：US5426365A
公开(公告)日：1995-06-20
申请号：US13425
申请日：1993-02-04
申请人： Kensuke Sekihara , Yukiko Ogura
发明人： Kensuke Sekihara , Yukiko Ogura
IPC分类号： A61B5/05 , A61B5/04 , A61B5/053 , G01R33/00 , G01R33/02 , G01R33/035 , G01R33/10
CPC分类号： G01R33/02 , A61B5/04008 , A61B5/0536
摘要： In a magnetic field generation source measuring method and system for determining a magnetic field generation source in an object to be examined from a magnetic field in the interior of the object measured at the exterior of the object, the object is represented by a model in which the object is divided into a plurality of cells. The resistance values of each cell in x, y and z directions are determined from information concerning the electric conductivity of the interior of the object beforehand measured. Supposing the distribution of electromotive forces in the object as a current source, a return current generated in accordance with the electromotive force distribution in the object is determined by use of estimated values of the intensities of the current source in the x, y and z directions and the resistance values. A vector of the sum of a current of the current source and the return current is determined for all of the cells. The second power of the absolute value of a difference between the vector of the sum and a current vector determined from the magnetic field in the interior of the object measured at the exterior of the object is subjected to summation for all of the cells. The estimated values of the current source intensities, which minimize the summation, are determined as an electromotive force distribution in the object.
摘要翻译：在用于在物体外部测量的物体内部的磁场中确定待检测物体中的磁场产生源的磁场产生源测量方法和系统中，该对象由以下模型表示：其中，该对象被分成多个单元。 x，y和z方向上的每个单元的电阻值由预先测量的物体内部的电导率的信息确定。假设物体中的电动势作为电流源的分布，通过使用x，y和z方向上的电流源的强度的估计值来确定根据物体中的电动势分布产生的返回电流和电阻值。为所有单元确定电流源的电流和返回电流之和的向量。在对象外部测量的对象内部的磁场确定的和矢量的矢量和当前矢量之间的差的绝对值的第二功率对所有单元进行求和。将求和的最小值的电流源强度的估计值确定为物体中的电动势分布。

6. 发明授权

US4689568A NMR chemical shift imaging method 失效
标题翻译： NMR化学位移成像方法
公开(公告)号：US4689568A
公开(公告)日：1987-08-25
申请号：US750475
申请日：1985-07-01
申请人： Shigeru Matsui , Kensuke Sekihara , Hideki Kohno , Takashi Onodera , Hidemi Shiono
发明人： Shigeru Matsui , Kensuke Sekihara , Hideki Kohno , Takashi Onodera , Hidemi Shiono
IPC分类号： G01R33/44 , A61B5/055 , A61B10/00 , G01R33/48 , G01R33/485 , G01R33/561 , G01R33/20
CPC分类号： G01R33/485 , G01R33/5616
摘要： An NMR imaging method which provides a three-dimensional image representative of the two-dimensional distribution of nuclear spin species resolved by chemical shift or the local spectra resolved by two-dimensional location. After the excitation of nuclear spins and the phase-encoding by application of a field gradient G.sub.y, a periodically inverting field gradient G.sub.x is generated to yield a continuous echo train. The echo train is sampled and separated into data of odd-numbered echoes and data of even-numbered echoes which data are in turn reconstructed into two-dimensional data arrays, respectively. The data thus reconstructed are three-dimensional Fourier-transformed.
摘要翻译：提供表示通过化学位移分解的核自旋物质的二维分布的三维图像的NMR成像方法或通过二维位置解析的局部光谱。在核自旋的激励和通过施加场梯度Gy的相位编码之后，产生周期性反转场梯度Gx以产生连续的回波串。回波串被采样并分离成奇数回波的数据和偶数回波的数据，数据又分别被重建成二维数据阵列。这样重建的数据是三维傅里叶变换的。

7. 发明授权

US4472683A Imaging apparatus using nuclear magnetic resonance 失效
标题翻译：使用核磁共振成像设备
公开(公告)号：US4472683A
公开(公告)日：1984-09-18
申请号：US420303
申请日：1982-09-20
申请人： Kensuke Sekihara , Etsuji Yamamoto , Hideki Kohno , Shinji Yamamoto
发明人： Kensuke Sekihara , Etsuji Yamamoto , Hideki Kohno , Shinji Yamamoto
IPC分类号： A61B10/00 , A61B5/055 , G01R33/48 , G01R33/54 , G01R33/08
CPC分类号： G01R33/4833
摘要： An imaging apparatus using nuclear magnetic resonance is disclosed in which both an image corresponding to the projection of a nuclear spin distribution in a to-be-inspected object on a two-dimensional plane and a display mark indicating a desired measuring position are displayed on a display face of a display device such as a CRT display, the display mark is freely moved on the display face to be set at a desired position on the display face, and magnetic field generating means for generating a static magnetic field, linear gradient field, or radio frequency magnetic field is controlled on the basis of the desired position of the display mark to obtain an image of that cross section of the object which is located at a position indicated by the display mark.
摘要翻译：公开了一种使用核磁共振的成像装置，其中在二维平面上的被检查物体中的核自旋分布的投影和指示期望的测量位置的显示标记的图像都显示在 CRT显示器等显示装置的显示面，在显示面上自由移动显示标记，将其设定在显示面上的期望位置，产生静磁场，线性梯度场，或者基于显示标记的期望位置来控制射频磁场，以获得位于由显示标记指示的位置处的对象的该横截面的图像。

8. 发明授权

US11543366B2 Information acquisition method, information acquisition apparatus, and recording medium 有权
公开(公告)号：US11543366B2
公开(公告)日：2023-01-03
申请号：US16816353
申请日：2020-03-12
申请人： Taishi Watanabe , Kensuke Sekihara
发明人： Taishi Watanabe , Kensuke Sekihara
IPC分类号： G01N23/04 , G06T11/00 , G01R33/035
摘要： An information acquisition method includes: executing a voxel defining process to divide an area in which a signal source is assumed to be present and define a voxel division V1 specifying resolution of an image; executing a data collecting process to acquire magnetic field data resulting from measurement of a magnetic field generated in the area; and executing a reconstructing process to estimate, by using a mathematical algorithm, a direction and strength of a current of a signal source at a location of each voxel based on the acquired magnetic field data. The reconstructing process includes: calculating a Gram matrix by using a voxel division V2 defined coarser than the voxel division V1; and reconstructing, by using the Gram matrix, a direction and strength of a current of a signal source in the voxel division V1.

9. 发明授权

US5419320A Method and apparatus for obtaining an image indicating metabolism in a body 失效
标题翻译：用于获得表示身体代谢的图像的方法和装置
公开(公告)号：US5419320A
公开(公告)日：1995-05-30
申请号：US139086
申请日：1993-10-21
申请人： Fumio Kawaguchi , Hiroshi Takeuchi , Minoru Yoshida , Takeshi Tajima , Kensuke Sekihara
发明人： Fumio Kawaguchi , Hiroshi Takeuchi , Minoru Yoshida , Takeshi Tajima , Kensuke Sekihara
IPC分类号： A61B10/00 , A61B5/00 , A61B5/055 , A61B6/03 , G01N21/17 , G06T1/00 , G06T11/00
CPC分类号： A61B6/032 , A61B5/0035 , A61B5/0073 , A61B6/4417 , A61B6/5247 , G06T11/008
摘要： An X-ray tomography scanner and an optical tomography scanner are combined to obtain an optical image indicting metabolism in the body. Optical projection data indicating light pulse transmissions in the body are compensated by using a light scattering coefficient distribution determined by an X-ray tomogram image discriminated into individual internal organs or tissues. The compensated projection are back-projected.
摘要翻译：组合X射线层析成像扫描仪和光学层析成像扫描仪，以获得身体中的光学图像指示代谢。通过使用由被识别为各个内部器官或组织的X射线断层图像确定的光散射系数分布来补偿表示身体中的光脉冲传输的光学投影数据。补偿投影被反投影。

10. 发明授权

US5170119A Process and apparatus for determining the biocurrent distribution of a living body when the exact number of field sources is not known 失效
标题翻译：当确定现场来源的实际数量未知时，确定生活物体的生物流分布的过程和装置
公开(公告)号：US5170119A
公开(公告)日：1992-12-08
申请号：US676077
申请日：1991-03-27
申请人： Kensuke Sekihara , Nagaaki Ohyama , Hideaki Haneishi , Toshio Honda
发明人： Kensuke Sekihara , Nagaaki Ohyama , Hideaki Haneishi , Toshio Honda
IPC分类号： A61B5/04 , G06F17/00 , G06K9/00
CPC分类号： G06K9/0057 , A61B5/04005
摘要： A process and an apparatus for measuring the biocurrent distribution call for initially assuming a number of multiple currents which is more than the number of isolated currents possibly existing in a living body and calculating the virtual magnetic field created by the assumed currents at actual measuring points. The estimated location and current vectors of said assumed currents are consecutively changed to decrease the difference between said virtual and actual magnetic fields so that the estimated location and current vectors of the assumed currents having the number corresponding to the true isolated currents substantially approximate the true values and the estimates of the other assumed currents approximate zero. This enables the biocurrent distribution to be exactly determined even when the number of isolated currents is not preliminarily known.

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