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    • 2. 发明授权
    • Digital x-ray tomosynthesis system
    • 数字X射线断层合成系统
    • US07177390B2
    • 2007-02-13
    • US11077666
    • 2005-03-10
    • Peter MartinBrett Spivey
    • Peter MartinBrett Spivey
    • G01N23/00
    • A61B6/4441A61B6/025A61B6/4405A61B6/466A61B6/587A61B6/588G01N23/044G01N2223/419
    • Method and device for digital x-ray tomosynthesis. Tomographic and/or three-dimensional images of an object are obtained with an x-ray source and a digital x-ray image sensor. The source, object and sensor are positioned relative to each other and attenuation data is obtained for a large number of rays of x-radiation through the object. A special algorithm is provided to convert the data into images. To calculate the images the algorithm uses iterative processes with a least squares type technique but with generalized (as opposed to specific) functions. The algorithm solves for the functions which are the images. Preferred embodiments include a system having an x-ray point source with a cone of diverging x-rays, a two-dimensional digital x-ray image sensor, two linear translation stages to independently move both the x-ray source and the digital x-ray image sensor, two rotation mechanisms to rotate the two linear translation stages, a microprocessor to control the data acquisition, and a computer programmed with a special algorithm to calculate the tomographic images. A plurality of sets of digital data (representing x-ray algorithm images of an object) are acquired by the digital x-ray image sensor, with the x-ray source and the digital x-ray image sensor located at different positions and angles relative to the object. The digital data representing the x-ray attenuation images is stored in the computer. Special mathematical algorithms then compute multiple images of the object using the acquired digital data. These images could include multiple tomographic images, a three-dimensional image, or a multiple three-dimensional images.
    • 数字X射线断层合成的方法和装置。 使用x射线源和数字X射线图像传感器获得物体的层析和/或三维图像。 源,物体和传感器相对于彼此定位,并且通过物体获得大量x辐射的光线的衰减数据。 提供了一种特殊的算法来将数据转换为图像。 为了计算图像,该算法使用具有最小二乘法技术的迭代过程,但是具有广义(与特定)功能相反。 该算法解决了作为图像的功能。 优选实施例包括具有具有发散x射线的锥体的x射线点源的系统,二维数字X射线图像传感器,用于独立地移动x射线源和数字x射线源的两个线性平移级, 射线图像传感器,旋转两个线性转换阶段的两个旋转机构,一个微处理器来控制数据采集,以及一台用特殊算法编程的计算机来计算断层图像。 多个数字数据组(表示对象的x射线算法图像)由数字X射线图像传感器获取,x射线源和数字X射线图像传感器位于不同的位置和角度相对 对象。 表示X射线衰减图像的数字数据被存储在计算机中。 然后,特殊的数学算法使用所获取的数字数据来计算对象的多个图像。 这些图像可以包括多个断层图像,三维图像或多个三维图像。
    • 3. 发明授权
    • Imaging device
    • 成像设备
    • US5886353A
    • 1999-03-23
    • US668432
    • 1996-06-18
    • Brett SpiveyPeter MartinA. Lee MorsellEugene AtlasAnthony Pellegrino
    • Brett SpiveyPeter MartinA. Lee MorsellEugene AtlasAnthony Pellegrino
    • H01L27/14A61B6/00G01T1/24H01L27/146H04N5/32
    • A61B6/505A61B6/4233A61B6/482A61B6/502H01L27/146H01L27/14658H04N5/32H04N5/367A61B6/4035A61B6/4291
    • An imaging device for producing images from electron-hole producing radiation. Electron-hole pairs are produced in a radiation absorbing layer comprised of a photoconductive material. This layer covers an array of metal oxide semiconductor pixel circuits which are incorporated into and on a crystalline semiconductor substrate. Each pixel circuit has a charge collecting pixel electrode, a capacitor connected to the electrode to store the charges and a charge measuring transistor circuit. A voltage source provides an electric field across the radiation absorbing layer between the pixel electrodes and a radiation transparent surface electrode covering the radiation absorbing layer. A data acquisition system acquires and stores data derived from charge measurements and in a preferred embodiment a computer computes images from the data. The image may be displayed on a monitor or printed out on a printer. Preferred embodiments provide images from x-ray, ultraviolet and visible light.
    • 一种用于从电子空穴产生辐射产生图像的成像装置。 在由光电导材料构成的辐射吸收层中产生电子 - 空穴对。 该层覆盖结合到晶体半导体衬底中和晶体半导体衬底上的金属氧化物半导体像素电路阵列。 每个像素电路具有电荷收集像素电极,连接到电极以存储电荷的电容器和电荷测量晶体管电路。 电压源在像素电极和覆盖辐射吸收层的辐射透明表面电极之间的辐射吸收层两端提供电场。 数据采集​​系统获取并存储从电荷测量得到的数据,在优选实施例中,计算机从数据中计算图像。 图像可能会显示在显示器上或打印在打印机上。 优选实施例提供来自X射线,紫外线和可见光的图像。
    • 5. 发明授权
    • X-ray image sensor
    • X射线图像传感器
    • US5528043A
    • 1996-06-18
    • US426691
    • 1995-04-21
    • Brett SpiveyPeter MartinLee MorsellEugene AtlasAnthony Pellegrino
    • Brett SpiveyPeter MartinLee MorsellEugene AtlasAnthony Pellegrino
    • A61B6/00H01L27/146H04N5/32G01T1/24H01L27/14
    • H04N5/367A61B6/4233A61B6/482A61B6/502A61B6/505H01L27/146H01L27/14658H04N5/32A61B6/4035
    • This invention provides an imaging system for producing images from electromagnetic radiation such as x-rays. The system includes a detector comprised of a radiation-absorbing layer sandwiched between an array of CMOS integrated circuits (which we call pixel circuits) and a surface electrode layer transparent to the radiation. Each of the pixel circuits in the array has a charge collecting electrode. An external voltage applied between the surface electrode layer and the charge collecting electrodes produces an electric field across the thickness of the absorbing layer. Radiation passing through the transparent surface electrode layer is absorbed in the absorbing layer creating electron/hole pairs in the absorbing layer. A portion of the liberated holes (or electrons) migrates under the influence of the electric field toward the charge collecting electrodes, which collect the holes and store them as charges on small capacitors located within each circuit. This process results in a discrete distribution of stored voltages across the array proportional to the distribution of radiation photons incident on the absorbing layer. Circuitry in each pixel provides for the voltage on each pixel capacitor to be recorded via readout circuitry and permits the resetting of the pixel capacitors. Preferred embodiments provide fine resolution with a large number of pixels with dimensions about the size of the thickness of human hair.
    • 本发明提供了一种用于从诸如x射线的电磁辐射产生图像的成像系统。 该系统包括由夹在CMOS集成电路阵列之间的辐射吸收层(我们称之为像素电路)和对辐射透明的表面电极层的检测器。 阵列中的每个像素电路具有电荷收集电极。 施加在表面电极层和电荷收集电极之间的外部电压在吸收层的厚度上产生电场。 通过透明表面电极层的辐射被吸收层吸收,从而在吸收层中产生电子/空穴对。 释放的空穴(或电子)的一部分在电场的影响下迁移到电荷收集电极,电荷收集电极收集空穴并将它们作为电荷存储在位于每个电路内的小电容器上。 该过程导致阵列上存储的电压的离散分布与入射在吸收层上的辐射光子的分布成比例。 每个像素中的电路提供通过读出电路记录的每个像素电容器上的电压,并允许像素电容器的复位。 优选实施例提供具有大约人头发厚度尺寸的大量像素的精细分辨率。
    • 7. 发明申请
    • Digital x-ray tomosynthesis system
    • 数字X射线断层合成系统
    • US20050226369A1
    • 2005-10-13
    • US11077666
    • 2005-03-10
    • Peter MartinBrett Spivey
    • Peter MartinBrett Spivey
    • A61B6/00A61B6/03G01N23/00G01N23/04G21K1/12H05G1/60
    • A61B6/4441A61B6/025A61B6/4405A61B6/466A61B6/587A61B6/588G01N23/044G01N2223/419
    • Method and device for digital x-ray tomosynthesis. Tomographic and/or three-dimensional images of an object are obtained with an x-ray source and a digital x-ray image sensor. The source, object and sensor are positioned relative to each other and attenuation data is obtained for a large number of rays of x-radiation through the object. A special algorithm is provided to convert the data into images. To calculate the images the algorithm uses iterative processes with a least squares type technique but with generalized (as opposed to specific) functions. The algorithm solves for the functions which are the images. Preferred embodiments include a system having an x-ray point source with a cone of diverging x-rays, a two-dimensional digital x-ray image sensor, two linear translation stages to independently move both the x-ray source and the digital x-ray image sensor, two rotation mechanisms to rotate the two linear translation stages, a microprocessor to control the data acquisition, and a computer programmed with a special algorithm to calculate the tomographic images. A plurality of sets of digital data (representing x-ray algorithm images of an object) are acquired by the digital x-ray image sensor, with the x-ray source and the digital x-ray image sensor located at different positions and angles relative to the object. The digital data representing the x-ray attenuation images is stored in the computer. Special mathematical algorithms then compute multiple images of the object using the acquired digital data. These images could include multiple tomographic images, a three-dimensional image, or a multiple three-dimensional images.
    • 数字X射线断层合成的方法和装置。 使用x射线源和数字X射线图像传感器获得物体的层析和/或三维图像。 源,物体和传感器相对于彼此定位,并且通过物体获得大量x辐射的光线的衰减数据。 提供了一种特殊的算法来将数据转换为图像。 为了计算图像,该算法使用具有最小二乘法技术的迭代过程,但是具有广义(与特定)功能相反。 该算法解决了作为图像的功能。 优选实施例包括具有具有发散x射线的锥体的x射线点源的系统,二维数字X射线图像传感器,用于独立地移动x射线源和数字x射线源的两个线性平移级, 射线图像传感器,旋转两个线性转换阶段的两个旋转机构,一个微处理器来控制数据采集,以及一台用特殊算法编程的计算机来计算断层图像。 多个数字数据组(表示对象的x射线算法图像)由数字X射线图像传感器获取,x射线源和数字X射线图像传感器位于不同的位置和角度相对 对象。 表示X射线衰减图像的数字数据被存储在计算机中。 然后,特殊的数学算法使用所获取的数字数据来计算对象的多个图像。 这些图像可以包括多个断层图像,三维图像或多个三维图像。