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公开(公告)号：US5880470A
公开(公告)日：1999-03-09
申请号：US643746
申请日：1996-05-06
申请人： Keiji Umetani , Ken Ueda , Tetsurou Minemura , Kazutaka Tsuji , Koichi Koike
发明人： Keiji Umetani , Ken Ueda , Tetsurou Minemura , Kazutaka Tsuji , Koichi Koike
CPC分类号： G01T1/2018
摘要： A 2-dimensional radiation image detector wherein a plurality of conversion elements for converting a radiation into visible light and a plurality of photo-sensitive elements for detecting the visible light and accumulating signals are formed an elements board includes two elements boards arranged in an overlapping relationship with each other and each having the plurality of photo-sensitive elements arranged two-dimensionally thereon such that the distance between centers of the photo-sensitive elements in one direction of the arrangement is substantially equal to a width of the photo-sensitive elements while the distance between the centers of the photo-sensitive elements in a direction perpendicular to the one direction is substantially equal to twice the width of the photo-sensitive elements and such that that portion of a radiation directed upon the two overlapping elements boards which has passed through a first one of the elements boards other than locations of the photo-sensitive elements is detected by the photo-sensitive elements of the second elements board.
摘要翻译： 一种二维放射线图像检测器，其中用于将辐射转换成可见光的多个转换元件和用于检测可见光和累积信号的多个光敏元件形成为元件板，包括以重叠关系布置的两个元件板 彼此之间并且每个具有多个光敏元件，其二维地布置在其上，使得光敏元件的中心之间在该布置的一个方向上的距离基本上等于光敏元件的宽度，而 光敏元件在与一个方向垂直的方向上的中心之间的距离基本上等于光敏元件宽度的两倍，并且使得照射到已经通过的两个重叠元件板的辐射部分 除了照片敏感度位置之外的第一个要素板 e元件由第二元件板的光敏元件检测。
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公开(公告)号：US5960058A
公开(公告)日：1999-09-28
申请号：US759088
申请日：1996-11-29
申请人： Rika Baba , Ken Ueda , Hironori Ueki , Keiji Umetani
发明人： Rika Baba , Ken Ueda , Hironori Ueki , Keiji Umetani
CPC分类号： G06T5/50 , A61B6/583 , Y10S378/901
摘要： The method for generating an X-ray image of the present invention by correcting a measured fluorographic image or radiographic image and removing the veiling glare component and scattered X-ray component has (1) a step of generating a veiling glare component image and a scattered X-ray component image corresponding to the fluorographic image or radiographic image from the measured fluorographic image or radiographic image independently and (2) a step of obtaining the difference between the measured fluorographic image or radiographic image and the veiling glare component image and scattered X-ray component image and executes a correction of removing the veiling glare component and scattered X-ray component from the measured fluorographic image or radiographic image.
摘要翻译： 通过校正测量的荧光图像或放射线照相图像并除去遮蔽的眩光成分和散射的X射线成分来生成本发明的X射线图像的方法具有以下步骤：（1）产生遮光眩光成分图像和散射 X射线分量图像对应于来自测量的荧光图像或放射照相图像的荧光图像或放射照相图像，以及（2）获得所测量的荧光图像或放射线照相图像与遮罩眩光分量图像之间的差异的步骤， 并且从测量的荧光图像或放射照相图像执行去除遮光眩光成分和散射X射线成分的校正。
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3.发明授权X-ray fluorograph and radiograph apparatus for obtaining X-ray image having high X-ray latitude 失效用于获得具有高X射线纬度的X射线图像的X射线透视图和X射线照相装置
公开(公告)号：US5353325A
公开(公告)日：1994-10-04
申请号：US983058
申请日：1992-11-30
申请人： Ken Ueda , Hisatake Yokouchi , Keiji Umetani , Yoichi Onodera
发明人： Ken Ueda , Hisatake Yokouchi , Keiji Umetani , Yoichi Onodera
CPC分类号： H01J31/50 , H05G1/60 , H01J2231/50036 , H01J2231/50063 , H01J2231/5013
摘要： An X-ray fluorograph and radiograph apparatus including an X-ray television camera having an avalanche multiplication operation type image pick-up tube having an input/output characteristic in which increment of an output reduces gradually against increase of dose of incident X-rays and a unit for setting X-ray latitude and a multiplication factor of an image pick-up tube to optimum values for inputted radiograph conditions by controlling a voltage value applied to the image pick-up tube and a value of a stop of an optical system, and making it possible to obtain X-ray latitude at 1,000 or more.
摘要翻译： 一种X射线荧光照相机和X射线照相机，其特征在于，包括具有雪崩倍增运算型摄像管的X射线照相机，X射线照相机具有输入/输出特性，其中输出增量随着入射X射线剂量的增加而逐渐降低， 用于通过控制施加到摄像管的电压值和光学系统的停止值来设置X射线纬度和摄像管的倍增系数以获得输入的摄影条件的最佳值的单元， 并且可以获得1,000以上的X射线纬度。
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公开(公告)号：US4945552A
公开(公告)日：1990-07-31
申请号：US277987
申请日：1988-11-30
申请人： Ken Ueda , Keiji Umetani , Yoshio Suzuki
发明人： Ken Ueda , Keiji Umetani , Yoshio Suzuki
IPC分类号： G01T1/36
CPC分类号： G01T1/36
摘要： An energy subtraction image measuring system for selectively depicting any target element using X-rays includes an X-ray filter containing the target element. It measures an X-ray image by using a quasi-monoenergetic X-ray beam obtained without using the filter and having a photon energy range that extends above and below the absorption edge of the target element, as well as an X-ray image using an X-ray beam containing only the photon energy component having photon energy levels lower than the absorption edge which is obtained by using the filter. The energy subtraction image measuring system then generates an energy substraction image by the operation of the thus obtained data.
摘要翻译： 用于使用X射线选择性地描绘任何目标元件的能量减影图像测量系统包括包含目标元件的X射线滤光器。 它通过使用获得的准单能X射线束来测量X射线图像，而不使用滤光器并具有在目标元件的吸收边缘上方和下方延伸的光子能量范围，以及使用 仅含有光子能量级别低于通过使用滤波器获得的吸收边缘的光子能量的X射线束。 能量减影图像测量系统然后通过这样获得的数据的操作产生能量减影图像。
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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
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。
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公开(公告)号：US5402463A
公开(公告)日：1995-03-28
申请号：US109075
申请日：1993-08-19
申请人： Keiji Umetani , Ken Ueda , Yoichi Onodera , Hisatake Yokouchi
发明人： Keiji Umetani , Ken Ueda , Yoichi Onodera , Hisatake Yokouchi
摘要： An X-ray imaging apparatus is constructed with a combination of an X-ray image intensifier, a relay optical system, and a video camera with avalanche multiplication camera tube. The video camera is controlled by an image acquisition circuit, a synchronizing signal generation circuit, and an applying voltage control circuit. The applying voltage control circuit for controlling the voltage to be applied to the video camera with avalanche multiplication camera tube controls the applying voltage on the basis of image data in an image memory so that the gray scale level of a detected visible image is corrected.
摘要翻译： X射线成像装置由X射线图像增强器，中继光学系统和具有雪崩倍增照相机管的摄像机的组合构成。 摄像机由图像采集电路，同步信号发生电路和施加电压控制电路控制。 用于控制施加到具有雪崩倍增照相机的摄像机的电压的施加电压控制电路基于图像存储器中的图像数据来控制施加电压，从而校正检测到的可见图像的灰度级。
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公开(公告)号：US4890310A
公开(公告)日：1989-12-26
申请号：US106345
申请日：1987-10-09
申请人： Keiji Umetani , Ken Ueda , Ryuichi Suzuki , Hisatake Yokouchi
发明人： Keiji Umetani , Ken Ueda , Ryuichi Suzuki , Hisatake Yokouchi
CPC分类号： A61B6/482 , A61B6/032 , A61B6/4092 , G01T1/36 , H05G1/60
摘要： An x-ray having the energy bandwidth which extends between above and below the absorption edge energy of an element constituting a contrast agent is emitted from an x-ray source as an x-ray to be projected to an object, the x-ray at the higher energy component than the absorption energy of the contrast-agent constituting element is detected by one x-ray detector, the x-ray, having been transmitted through the one x-ray detector, at the lower energy component than the absorption edge energy of the contrast agent constituting element is detected by another x-ray detector, and a subtraction image is obtained by processing the image data from both detectors.
摘要翻译： 从构成造影剂的元件的吸收边缘能量的上方和下方延伸的能量带宽的x射线作为x射线从X射线源发射以投影到物体，X射线在 通过一个X射线检测器来检测比造影剂构成元件的吸收能量更高的能量分量，x射线已经通过一个x射线检测器以比吸收边缘能量更低的能量分量 由另一X射线检测器检测造影剂构成元件，并且通过从两个检测器处理图像数据来获得减影图像。
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公开(公告)号：US5600701A
公开(公告)日：1997-02-04
申请号：US240313
申请日：1994-05-10
申请人： Rika Baba , Ken Ueda , Yoichi Onodera , Keiji Umetani , Hisatake Yokouchi , Shigekazu Hara , Tomoharu Kajiyama , Fumitaka Takahashi
发明人： Rika Baba , Ken Ueda , Yoichi Onodera , Keiji Umetani , Hisatake Yokouchi , Shigekazu Hara , Tomoharu Kajiyama , Fumitaka Takahashi
CPC分类号： A61B6/5241 , H04N5/32 , H05G1/60 , A61B6/4291
摘要： In order to image an object larger than a field of view for observation, imaging is effected by dividing it into several times and pictures thus imaged are synthesized to constitute a whole image. In order to image several times, only a detecting unit is moved and an X-ray source is substantially fixed with respect to the object. Images thus obtained include a common part of the object and are joined so that the common part are overlapped on each other. In case where an image pick-up tube is included in the detecting unit, the image pick-up tube is made operable, after a period of time necessary for attenuation of microphonic noise has lapsed, measured from a point of time where the detecting unit has been stopped.
摘要翻译： 为了对大于视野的物体进行成像以进行观察，通过将其分割成数次而进行成像，并且合成如此成像的图像以构成整个图像。 为了进行多次拍摄，仅移动检测单元，并且X射线源相对于物体基本固定。 如此获得的图像包括对象的公共部分并且被连接，使得公共部分彼此重叠。 在检测单元中包括图像拾取管的情况下，在从所述检测单元的时间点开始测量的情况下，在经过了麦克风噪声衰减所需的时间段之后，使摄像管可操作 已经停止
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公开(公告)号：US5528655A
公开(公告)日：1996-06-18
申请号：US200518
申请日：1994-02-23
申请人： Keiji Umetani , Ken Ueda , Hisatake Yokouchi
发明人： Keiji Umetani , Ken Ueda , Hisatake Yokouchi
摘要： A radiologic three-dimensional imaging apparatus comprises a device for generating an X-ray, a two-dimensional X-ray image detector including an avalanche multiplication image pickup tube for detecting an image of an object with the X-ray transmitted therethrough, a device for producing an average intensity distribution from a plurality of intensity distributions of the X-ray transmitted image, and a device for setting the target voltage applied to the photoconductive layer of the avalanche multiplication image pickup tube for each electron beam scanning position in such a manner the target voltage is high at the central portion of the visual field of the object and low at the peripheral portion thereof.
摘要翻译： 一种放射性三维成像装置，包括用于产生X射线的装置，二维X射线图像检测器，其包括雪崩倍增图像拾取管，用于检测通过其透射的X射线的物体的图像;装置 用于从X射线透射图像的多个强度分布产生平均强度分布;以及用于以这种方式设置施加到雪崩倍增图像拾取管的光电导层的目标电压的装置 目标电压在物体的视野的中心部分是高的，而在其周边部分的低电平。
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公开(公告)号：US5526442A
公开(公告)日：1996-06-11
申请号：US317748
申请日：1994-10-04
申请人： Rika Baba , Ken Ueda , Hisatake Yokouchi , Keiji Umetani , Yoichi Onodera
发明人： Rika Baba , Ken Ueda , Hisatake Yokouchi , Keiji Umetani , Yoichi Onodera
CPC分类号： G06T5/006
摘要： An X-ray radiography method and apparatus in which a phantom such as a chart having elements arranged in predetermined positions is irradiated with X-rays and an X-rays detection unit detects signals thereof. An image of the chart is obtained and a center position of each of the elements in the image of the chart is obtained as well as for those elements which are not within the imaging field of view. Pixel positions for a distortion free image is obtained and a transform table is prepared making each of the pixel positions in the image of the chart correspond to each of the pixel positions in the distortion free image. A plurality of digital images of a subject to be examined are obtained and the digital images are corrected in accordance with the transform table. The corrected digital images are then joined together and a digital image is displayed, wherein common portions in the corrected images are in accordance with each other.
摘要翻译： 用X射线照射具有布置在预定位置的元件的图案的体模的X射线照相方法和装置，并且X射线检测单元检测其信号。 获得图表的图像，并且获得图表的图像中的每个元素的中心位置以及对于不在成像视场内的那些元素。 获得用于无失真图像的像素位置，并且准备变换表，使得图形图像中的每个像素位置对应于无失真图像中的每个像素位置。 获得要检查的对象的多个数字图像，并且根据变换表来校正数字图像。 然后将校正的数字图像连接在一起并显示数字图像，其中校正图像中的公共部分彼此相符。
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