公开(公告)号：US5771269A

公开(公告)日：1998-06-23

申请号：US725375

申请日：1996-10-03

申请人： Yong-Sheng Chao

发明人： Yong-Sheng Chao

IPC分类号： G01N23/04 ,  A61B6/00 ,  A61B6/03 ,  A61B6/06 ,  G01T1/164 ,  G06T1/00 ,  G06T5/20 ,  G06T11/00 ,  G21K1/02 ,  H05G1/60 ,  G21K1/12 ,  G21K5/10

CPC分类号： A61B6/482 ,  A61B6/06 ,  A61B6/4035 ,  A61B6/405 ,  A61B6/4241 ,  G01T1/1648 ,  G06T11/006 ,  G21K1/025 ,  H05G1/60 ,  G06T2211/408 ,  Y10S378/901

摘要： Apparatus and method for eliminating scatter effects in x-ray imaging using two-dimensional detector arrays. The apparatus consists of, in physical order, an x-ray source, a front two-dimensional x-ray detector, a beam selector, and a rear two-dimensional x-ray detector. The subject is located between the x-ray source and front detector. The beam selector prevents scatter x-rays from reaching the rear detector. The method simultaneously solves the two interdependent problems of obtaining scatter-free x-ray images and conducting dual-energy x-ray imaging with primary x-ray data. A high-resolution composite image containing primary and scatter x-ray components is read from the front detector. A low-resolution composite image is produced from the high-resolution composite image. A pair of low-resolution primary x-ray dual-energy images is read from the rear detector. Using an improved dual-energy data decomposition method, a low-resolution primary x-ray front detector image is calculated. A low-resolution scatter x-ray image is determined by subtracting the low-resolution primary x-ray front detector image from the low-resolution composite image. The low-resolution scatter x-ray image is interpolated to a high-resolution scatter x-ray image and subtracted from the high-resolution composite image to produce a high-resolution primary x-ray image.

摘要翻译： 用于消除使用二维检测器阵列的X射线成像中的散射效应的装置和方法。 该装置以物理顺序包括x射线源，前二维X射线检测器，束选择器和后二维X射线检测器。 主体位于X射线源和前端检测器之间。 光束选择器防止散射的X射线到达后部探测器。 该方法同时解决了获得无散射X射线图像和用原始x射线数据进行双能量X射线成像的两个相互依赖的问题。 从前检测器读取包含主要和散射x射线成分的高分辨率合成图像。 从高分辨率复合图像产生低分辨率合成图像。 从后检测器读取一对低分辨率的原始x射线双能量图像。 使用改进的双能量数据分解方法，计算低分辨率初级X射线前检测器图像。 通过从低分辨率合成图像中减去低分辨率初级X射线前端检测器图像来确定低分辨率散射x射线图像。 将低分辨率散射x射线图像插值到高分辨率散射x射线图像，并从高分辨率合成图像中减去以产生高分辨率原始X射线图像。

公开(公告)号：US4923819A

公开(公告)日：1990-05-08

申请号：US31408

申请日：1987-03-27

申请人： Salvador M. Fernandez ,  Hann-Ping Wang ,  Yong-Sheng Chao ,  Ernest F. Guignon

发明人： Salvador M. Fernandez ,  Hann-Ping Wang ,  Yong-Sheng Chao ,  Ernest F. Guignon

IPC分类号： G01N21/64 ,  G01N33/53

CPC分类号： G01N21/6408 ,  G01N33/5302 ,  G01N21/6428 ,  G01N2201/0697 ,  Y10S435/973 ,  Y10S436/805 ,  Y10S436/815 ,  Y10S436/818

摘要： Fluorescence immunoassay for determining single or multiple analytes based upon a single measurement of fluorescence are described.

摘要翻译： 描述了基于单次测量荧光测定单个或多个分析物的荧光免疫测定。

公开(公告)号：US06473246B1

公开(公告)日：2002-10-29

申请号：US09812055

申请日：2001-03-19

申请人： Yong-Sheng Chao

发明人： Yong-Sheng Chao

IPC分类号： G02B702

CPC分类号： G02B26/0875

摘要： A light beam deflector comprises an initial beam deflector that imparts a small initial deflection, and a beam deflection amplifier that increases the initial small deflection by a multiplication factor. The first of two initial beam deflector embodiments employs highly-electro-optic-sensitive materials and provides methods for reducing and eliminating their photorefractive effects, including the use of a suppressing light source, external electric fields, and temperature control. The second embodiment employs a multi-layer, iterative prism structure, increasing the aperture without increasing the supply voltage. The first of five embodiments of the beam deflection amplifier is a Keplerian telescope lens first stage and a negative lens system second stage. The second is a Galilean telescope lens first stage and a negative lens system second stage. The third is either a Keplerian or Galilean telescope lens alone. The fourth replaces the single second lens of the first stage with a compound lens system. The fifth uses a special sphere lens alone.

摘要翻译： 光束偏转器包括赋予小的初始偏转的初始光束偏转器和通过倍增因子增加初始小偏转的光束偏转放大器。 两个初始光束偏转器实施例中的第一个采用高电光敏感材料，并且提供减少和消除它们的光折射效应的方法，包括使用抑制光源，外部电场和温度控制。 第二实施例采用多层迭代棱镜结构，增加光圈而不增加电源电压。 光束偏转放大器的五个实施例中的第一个是开普勒式望远镜透镜第一阶段和负透镜系统第二阶段。 第二个是伽利略望远镜第一阶段和负透镜系统第二阶段。 第三个是单独的开普勒或伽利略望远镜。 第四代用复合透镜系统代替第一级的单个第二透镜。 第五个单独使用专用球形镜头。

公开(公告)号：US06292310B1

公开(公告)日：2001-09-18

申请号：US09812767

申请日：2001-03-20

申请人： Yong-Sheng Chao

发明人： Yong-Sheng Chao

IPC分类号： G02B702

CPC分类号： G02B26/0875

摘要： A light beam deflector comprising an initial dynamic beam deflector and a beam deflection amplifier. The initial deflector can be any currently available device for providing a small angle deflection. The beam deflection amplifier has two embodiments: a Keplerian telescope lens first stage and a negative lens system second stage, and a Galilean telescope lens first stage and a negative lens system second stage.

摘要翻译： 一种光束偏转器，包括初始动态光束偏转器和光束偏转放大器。 初始偏转器可以是用于提供小角度偏转的任何当前可用的装置。 光束偏转放大器具有两个实施例：开普勒式望远镜透镜第一级和负透镜系统第二级，以及伽利略望远镜透镜第一级和负透镜系统第二级。

公开(公告)号：US6052433A

公开(公告)日：2000-04-18

申请号：US25926

申请日：1998-02-19

申请人： Yong-Sheng Chao

发明人： Yong-Sheng Chao

IPC分类号： A61B6/00 ,  A61B6/03 ,  A61B6/06 ,  G01N23/04 ,  G01T1/164 ,  G03B42/02 ,  G06T1/00 ,  G06T5/20 ,  G06T11/00 ,  G21K1/02 ,  H05G1/60 ,  H05G1/64

CPC分类号： A61B6/482 ,  A61B6/06 ,  A61B6/4035 ,  A61B6/405 ,  A61B6/4241 ,  G01T1/1648 ,  G06T11/006 ,  G21K1/025 ,  H05G1/60 ,  G06T2211/408

摘要： Apparatus and method for performing dual-energy x-ray imaging using two-dimensional detectors. The apparatus consists of, in physical order, an x-ray source, a front two-dimensional x-ray detector, a beam selector, and a rear two-dimensional x-ray detector. The subject is located between the x-ray source and front detector. The beam selector prevents primary x-rays from reaching selected locations of the rear detector. A pair of primary dual-energy images is obtained at the rear detector. Using a dual-energy data decomposition method, a low-resolution primary x-ray front detector image is calculated, from which a high-resolution primary dual-energy image pair is calculated. In addition, the data decomposition method can be used to calculate a pair of high-spatial-resolution material composition images.

摘要翻译： 使用二维检测器进行双能X射线成像的装置和方法。 该装置以物理顺序包括x射线源，前二维X射线检测器，束选择器和后二维X射线检测器。 主体位于X射线源和前端检测器之间。 光束选择器防止主X射线到达后检测器的选定位置。 在后检测器处获得一对主要双能量图像。 使用双能数据分解方法，计算低分辨率初级X射线前检测器图像，从其计算高分辨率主要双能量图像对。 另外，数据分解方法可用于计算一对高空间分辨率的材料合成图像。