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公开(公告)号：US5949811A
公开(公告)日：1999-09-07
申请号：US947156
申请日：1997-10-08
申请人： Rika Baba , Ken Ueda , Hironori Ueki , Akira Kuba , Ken Ishikawa , Takashi Ishiguro
发明人： Rika Baba , Ken Ueda , Hironori Ueki , Akira Kuba , Ken Ishikawa , Takashi Ishiguro
CPC分类号： A61B6/4225 , A61B6/542 , A61B6/548 , H05G1/42 , A61B6/4291
摘要： An X-ray apparatus acquires an X-ray image of an object by radiating X-rays to the object and includes an X-ray radiator for radiating X-rays to an object. An imager acquires an X-ray image of the object and radiation dose controller controls the radiation dose so as to acquire an X-ray image having a predetermined X-ray relative noise level on the basis of an image level of a predetermined area in the X-ray image.
摘要翻译： X射线装置通过对物体照射X射线来获取物体的X射线图像，并且包括用于向物体照射X射线的X射线辐射器。 成像器获取对象的X射线图像，并且辐射剂量控制器控制辐射剂量，以便基于图像中的预定区域的图像水平获取具有预定X射线相对噪声水平的X射线图像 X射线图像。
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公开(公告)号：US06381299B1
公开(公告)日：2002-04-30
申请号：US09555904
申请日：2000-06-05
申请人： Rika Baba , Ken Ueda , Hiroyuki Kawai , Hironori Ueki , Koichi Koike , Akira Kuba , Nobuhisa Kasagima
发明人： Rika Baba , Ken Ueda , Hiroyuki Kawai , Hironori Ueki , Koichi Koike , Akira Kuba , Nobuhisa Kasagima
IPC分类号： G01N2300
CPC分类号： A61B6/0457 , A61B6/032
摘要： Between an X-ray generating system and an X-ray image detecting system arranged opposite to the X-ray generating system, an examination object supporting system is arranged and contains a straight movement table provided on a rotary table supported by a rotary table supporting member, and an examination object supporting member for supporting the examination object under either a standing position or a sitting position on the straight movement table. While the examination object is rotated by the rotary table, the examination object is continuously moved (reciprocating movement) by the straight movement table along a direction parallel to the rotation plane, and X-ray images of the examination object are acquired along a plurality of directions during both the rotating operation and the moving operation. As a result, both an X-ray tomographic image and a three-dimensional image (stereoscopic image) of a wider area than a viewing field of an X-ray I.I. can be acquired. Since the viewing fields of the X-ray tomographic image and of the 3-dimensional image can be employed, both diagnostic performance and also a diagnostic efficiency with respect to a large organ such as a lung can be improved.
摘要翻译： 在与X射线产生系统相对设置的X射线产生系统和X射线图像检测系统之间，配置有检查对象支撑系统，并且包括设置在由旋转台支撑构件支撑的旋转台上的直动移动台 以及检查对象支撑构件，用于在直立移动台上的站立位置或坐姿下支撑检查对象。 当检查对象被旋转台旋转时，检查对象通过直线移动台沿着与旋转平面平行的方向连续移动（往复运动），并且检查对象的X射线图像沿着多个 在旋转操作和移动操作期间的方向。 结果，X射线断层图像和比X射线I.I的视场更宽区域的三维图像（立体图像）都是。 可以获得。 由于可以使用X射线断层图像和3D图像的视野，因此可以提高诊断性能以及相对于诸如肺的大器官的诊断效率。
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公开(公告)号：US5878108A
公开(公告)日：1999-03-02
申请号：US80223
申请日：1998-05-18
申请人： Rika Baba , Ken Ueda , Ken Ishikawa , Hironori Ueki , Keiji Umetake
发明人： Rika Baba , Ken Ueda , Ken Ishikawa , Hironori Ueki , Keiji Umetake
CPC分类号： A61B6/5282 , H05G1/64 , A61B6/4291 , A61B6/583 , Y10S378/901
摘要： A radiographic apparatus which can improve at high speed the picture quality of an X-ray fluoroscopic image or an X-ray radiographic image is disclosed. In a radiographic apparatus acquiring an X-ray fluoroscopic image or an X-ray radiographic image and having a scattered X-ray corrector for eliminating a scattered X-ray component from the acquired X-ray fluoroscopic image or X-ray radiographic image, the scattered X-ray corrector comprises: scattered X-ray intensity distribution function generator for generating a scattered X-ray intensity distribution function on the basis of the acquired X-ray fluoroscopic image or X-ray radiographic image; a moving average calculator for executing moving average calculation a plurality of times in each of the vertical and lateral directions of the acquired X-ray fluoroscopic image or X-ray radiographic image; a window width calculator for calculating a window width of the moving average calculation on the basis of the scattered X-ray intensity distribution function; and a difference calculator means for calculating the difference between the acquired X-ray fluoroscopic image or X-ray radiographic image and an image to which the moving average calculation is performed.
摘要翻译： 公开了能够高速提高X射线透视图像或X射线照相图像的图像质量的放射线照相设备。 在从所获取的X射线透视图像或X射线照相图像获取X射线透视图像或X射线照相图像并具有用于消除散射X射线成分的散射X射线校正器的放射线照相设备中， 散射X射线校正器包括：散射X射线强度分布函数发生器，用于基于获取的X射线透视图像或X射线照相图像产生散射X射线强度分布函数; 移动平均计算器，用于在所获取的X射线透视图像或X射线照相图像的每个垂直和横向方向上执行移动平均计算多次; 窗口宽度计算器，用于基于散射的X射线强度分布函数计算移动平均计算的窗口宽度; 以及差分计算装置，用于计算所获取的X射线透视图像或X射线照相图像与执行移动平均计算的图像之间的差异。
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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：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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公开(公告)号：US20050063507A1
公开(公告)日：2005-03-24
申请号：US10942892
申请日：2004-09-17
申请人： Rika Baba , Ken Ueda , Masakazu Okabe
发明人： Rika Baba , Ken Ueda , Masakazu Okabe
CPC分类号： A61B6/466 , A61B6/032 , G01N23/04 , G06T11/005
摘要： An x-ray measuring apparatus comprises an x-ray source, an x-ray detector, a rotating device, and a processor. The x-ray source generates x-rays to be emitted to a subject. The x-ray detector detects measurement data regarding the subject. The rotating device changes a relative position of the x-ray source and the x-ray detector with respect to the subject. The processor executes an arithmetic operation for the measurement data. The x-ray detector is shifted by a distance shorter than half the length of the x-ray detector along a line parallel to the plane of rotation, in a tangential direction of the plane of rotation generated by the x-ray source 201. The processor executes a process for obtaining projection data by executing a logarithmic converting process for the measurement data, a process for multiplying a value of the projection data by a weight, and a process for obtaining reconstructed data by executing a reconstructing process using the data after being multiplied by the weight, thereby obtaining a three-dimensional reconstructed image.
摘要翻译： X射线测量装置包括x射线源，X射线检测器，旋转装置和处理器。 x射线源产生要发射到被摄体的X射线。 X射线检测器检测关于被摄体的测量数据。 旋转装置相对于被摄体改变x射线源和X射线检测器的相对位置。 处理器执行测量数据的算术运算。 X射线检测器沿着X射线源201的旋转平面的切线方向沿平行于旋转平面的线偏移X射线探测器的长度的一半的距离。 处理器通过执行用于测量数据的对数转换处理来执行获取投影数据的处理，用于将投影数据的值乘以权重的处理以及通过执行使用该数据之后的数据的重建处理来获得重建数据的处理 乘以权重，从而获得三维重建图像。
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公开(公告)号：US07515689B2
公开(公告)日：2009-04-07
申请号：US11722802
申请日：2005-12-08
IPC分类号： G21K3/00
CPC分类号： A61B6/4035 , A61B6/4441 , A61B6/542
摘要： An X-ray measuring instrument in which an object under examination is irradiated with X-rays, measurement data on the object is detected, a filter for adjusting the amount of transmitted X-rays is disposed between an X-ray source and the object, the relative position of the X-ray source to the object is varied, and the acquired measurement data is computed. The measurement data is subjected to logarithm transform to acquire projection data, and the amount of absorbed X-rays of the filter corresponding to the acquired projection data is determined. The thickness of the filter is computed by using a predetermined transform formula for the acquired amount of absorbed X-rays. A correction coefficient corresponding to the projection data acquired from the computed thickness of the filter is determined, and the projection data is multiplied by the determined correction coefficient. The projection data multiplied by the correction coefficient is restructure-computed to obtain a three-dimensional image.
摘要翻译： 一种X射线测量仪器，其中用X射线照射被检查物体，检测物体上的测量数据，在X射线源和物体之间设置用于调节透射X射线量的滤光器， 改变X射线源与物体的相对位置，并计算获取的测量数据。 对测量数据进行对数变换以获取投影数据，并且确定与获取的投影数据相对应的滤波器的吸收X射线量。 通过使用用于所获取的吸收X射线量的预定变换公式来计算滤波器的厚度。 确定与从滤波器的计算厚度获得的投影数据对应的校正系数，并将投影数据乘以确定的校正系数。 乘以校正系数的投影数据进行重组计算以获得三维图像。
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公开(公告)号：US20080043900A1
公开(公告)日：2008-02-21
申请号：US11722802
申请日：2005-12-08
IPC分类号： A61B6/00
CPC分类号： A61B6/4035 , A61B6/4441 , A61B6/542
摘要： In an X-ray measuring instrument, X-rays are irradiated to an object, measurement data concerning the object is detected, a filter that regulates an exposure of X-rays to be transmitted is interposed between an X-ray source and the object, the position of the X-ray source relative to the object is changed, and the detected measurement data is computed. The measurement data is logarithmically converted in order to produce projection data. The X-ray absorption of the filter relevant to the produced projection data is obtained. The thickness of the filter is calculated by applying a predetermined conversion expression to the obtained X-ray absorption. A correction coefficient for the projection data is obtained based on the calculated thickness of the filter. The projection data is multiplied by the obtained correction coefficient. The projection data multiplied by the correction coefficient is computed for reconstruction in order to produce a three-dimensional image.
摘要翻译： 在X射线测定装置中，对物体照射X射线，检测与物体有关的测量数据，将X射线源与物体之间插入X射线照射的过滤器， 改变X射线源相对于物体的位置，并计算检测的测量数据。 测量数据进行对数转换，以产生投影数据。 获得与产生的投影数据相关的滤光片的X射线吸收。 通过对所获得的X射线吸收应用预定的转换表达式来计算滤光器的厚度。 基于滤波器的计算厚度获得投影数据的校正系数。 将投影数据乘以所获得的校正系数。 计算乘以校正系数的投影数据用于重构以产生三维图像。
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公开(公告)号：US06519314B1
公开(公告)日：2003-02-11
申请号：US09720204
申请日：2000-12-22
IPC分类号： G01N2300
CPC分类号： A61B6/032 , A61B6/00 , A61B6/4085
摘要： An X-ray based measuring device of the invention includes: X-ray imaging means (102, 103, 311) which have their detection areas divided into a plurality of detector units (102a to 102d, 201′), detect X-rays transmitted through an inspection object (106), and pick up X-ray images in interested areas (310, 902, 902′) of the inspection object; conversion means (211, 212) for converting analog image signals read from the detector units into digital image data under specified conversion conditions for each of the detector units; and re-conversion means (214, 222) for converting the digital image data obtained for each of the detector units under re-conversion conditions corresponding to the specified conversion conditions, wherein analog image signals are A/D converted into digital image data under optimum conversion conditions for each detector unit, and X-ray images in interested areas of the inspection object are sequentially picked up.
摘要翻译： 本发明的基于X射线的测量装置包括：将其检测区域划分为多个检测器单元（102a至102d，201'）的X射线成像装置（102,103,311），检测发射的X射线 通过检查对象（106），并且在检查对象的感兴趣区域（310,902,902'）中拾取X射线图像; 转换装置（211,212），用于在每个检测器单元的特定转换条件下将从检测器单元读取的模拟图像信号转换成数字图像数据; 以及再转换装置（214,222），用于在对应于指定的转换条件的重新转换条件下转换针对每个检测器单元获得的数字图像数据，其中模拟图像信号被最佳地A / D转换成数字图像数据 依次拾取每个检测器单元的转换条件和检查对象的感兴趣区域中的X射线图像。
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公开(公告)号：US07110487B2
公开(公告)日：2006-09-19
申请号：US10942892
申请日：2004-09-17
申请人： Rika Baba , Ken Ueda , Masakazu Okabe
发明人： Rika Baba , Ken Ueda , Masakazu Okabe
IPC分类号： H05G1/64
CPC分类号： A61B6/466 , A61B6/032 , G01N23/04 , G06T11/005
摘要： An x-ray measuring apparatus comprises an x-ray source, an x-ray detector, a rotating device, and a processor. The x-ray source generates x-rays to be emitted to a subject. The x-ray detector detects measurement data regarding the subject. The rotating device changes a relative position of the x-ray source and the x-ray detector with respect to the subject. The x-ray detector is shifted by a distance shorter than half the length of the x-ray detector along a line parallel to the plane of rotation, in a tangential direction of the plane of rotation generated by the x-ray source. The processor obtains projection data by executing a logarithmic converting process for the measurement data, multiplies a value of the projection data by a weight, and obtains reconstructed data therefrom.
摘要翻译： X射线测量装置包括x射线源，X射线检测器，旋转装置和处理器。 x射线源产生要发射到被摄体的X射线。 X射线检测器检测关于被摄体的测量数据。 旋转装置相对于被摄体改变x射线源和X射线检测器的相对位置。 X射线检测器沿着X射线检测器的长度的一半的距离沿平行于旋转平面的线在X射线源产生的旋转平面的切线方向上移动距离。 处理器通过对测量数据执行对数转换处理来获得投影数据，将投影数据的值乘以权重，并从其获得重建数据。
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