会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Compton scattering gamma radiation camera and method of creating
radiological images
    • 康普顿散射伽马射线照相机和创建放射图像的方法
    • US4529882A
    • 1985-07-16
    • US406322
    • 1982-08-09
    • Denny L. Y. Lee
    • Denny L. Y. Lee
    • G01T1/24G01T1/29
    • G01T1/2928A61B6/4258G01T1/247
    • A gamma radiation camera and a method are disclosed for creating an image of the radiation density of a source of photons. The camera comprises a detecting device made with solid-state material capable of generating electron-hole pairs as a result of collisions between photons and such material. The camera further includes an identifying device which identifies an ordered pair of said collisions in which both collisions result from a common photon. The camera further includes apparatus for determining an image of said source of common photon from the locations of the collisions of, and the number of electron-hole pairs generated by said ordered pair of collisions.The apparatus for determining an image determines a collision line between two collisions of an ordered pair, and determines the angle of Compton scattering relative to the collision line which occurs at a first of the collisions of such a selected pair. In a preferred embodiment the gamma camera includes a parallel plate collimator placed between the detecting device and the position at which the source of photons is to be located. In such a preferred embodiment, the gamma camera further includes a second line determining device for determining a second line parallel with the collimation plane which forms the determined Compton scattering angle with the collision line at the location of the first collision of the selected pair.
    • 公开了用于产生光子源的辐射密度的图像的伽马射线照相机和方法。 相机包括由固体材料制成的检测装置,其能够由于光子和这种材料之间的碰撞而产生电子 - 空穴对。 相机还包括识别装置,其识别所述碰撞的有序对,其中两个冲突由公共光子产生。 照相机还包括用于根据由所述有序对碰撞产生的电子 - 空穴对的碰撞和数量的位置确定所述公共光源的图像的装置。 用于确定图像的装置确定有序对的两次碰撞之间的碰撞线,并且确定在这种所选择的对中的第一碰撞处发生的相对于碰撞线的康普顿散射的角度。 在优选实施例中,伽马照相机包括放置在检测装置与光子源所在的位置之间的平行板准直仪。 在这样的优选实施例中,伽马照相机还包括第二线确定装置,用于确定与准直平面平行的第二线,该准直平面与所选对的第一次碰撞位置处的碰撞线形成确定的康普顿散射角。
    • 3. 发明授权
    • Anti scatter radiation grid for a detector having discreet sensing elements
    • 用于具有离散感测元件的检测器的防散射辐射网格
    • US06366643B1
    • 2002-04-02
    • US09679234
    • 2000-10-04
    • James E. DavisDenny L. Y. Lee
    • James E. DavisDenny L. Y. Lee
    • G21K100
    • G21K1/10G21K1/025
    • A shielding grid constructed of a radiation absorbing material for use with an array of discreet, non contiguous radiation sensors to protect such sensors from scattered radiation. The sensors each have a radiation sensitive area with a width and a length. In designing the grid a prototile having a prototile width and a prototile length is developed. The prototile width is equal to the radiation sensitive area width divided by an integer and the prototile length is also equal to the radiation sensitive area length divided by a integer. The prototile contains a motif contained solely within the prototile that forms a pattern when a plurality of prototiles sufficient to cover the array of discreet sensor are arrayed contiguously. The grid is constructed with the radiation absorbing material in this pattern.
    • 由辐射吸收材料构成的屏蔽网格,用于与排列不连续的辐射传感器阵列一起使用,以保护这种传感器免受散射辐射的影响。 传感器各具有宽度和长度的辐射敏感区域。 在设计网格时,开发了具有原始宽度和原始长度的原型。 原始宽度等于辐射敏感区域宽度除以整数,原始长度也等于辐射敏感区域长度除以整数。 原子游离体包含仅在原始细胞内包含的基序,当构成足够覆盖离散传感器阵列的多个原生质体相邻排列时,形成图案。 在该图案中用该辐射吸收材料构成栅格。
    • 4. 发明授权
    • Single-stroke radiation anti-scatter device for x-ray exposure window
    • 用于x射线曝光窗的单冲程辐射防散射装置
    • US06181773B2
    • 2001-01-30
    • US09264648
    • 1999-03-08
    • Denny L. Y. LeeKelly P. Golden
    • Denny L. Y. LeeKelly P. Golden
    • G21K110
    • G21K1/025
    • A radiation anti-scatter device comprising a grid and a grid driver connected to the grid for unidirectionaly moving the grid with a variable grid velocity along a path between a starting and an end position, and a method of providing such grid motion. The variable grid velocity may have a velocity profile V1=k1t for a first period and then V2=k2t−m for a second period, where V1 and V2 are velocity, k1 and k2 are constants, t is time, and m is an exponent having a value greater than 0. The anti-scatter device may be a component of a direct radiographic diagnostic imaging system which includes an image-producing element having an array of radiation detectors aligned in rows, and where the anti-scatter device is a grid having vanes oriented at an angle to the detector rows. Radiation emission may be synchronized with the grid motion to optimize a radiograph for a particular grid, radiation source, or examination procedure. The apparatus implements a method for reducing Moir{acute over (e)} patterns in radiographic detectors having an array of sensors by unidirectionaly moving the grid in a single stroke during the radiation exposure with an asymptotically decreasing speed profile such that grid motion is maintained for a plurality of different radiation exposure times.
    • 一种辐射防散射装置,包括栅格和连接到栅格的栅极驱动器,用于沿着开始和结束位置之间的路径以可变栅格速度单向移动栅格,以及提供这种栅格运动的方法。 可变网格速度可以具有第一周期的速度分布V1 = k1t,然后在第二周期中可以具有V2 = k2t-m,其中V1和V2是速度,k1和k2是常数,t是时间,m是指数 具有大于0的值。防散射装置可以是直接放射照相诊断成像系统的部件,其包括具有排列成阵列的辐射检测器的图像产生元件,并且其中防散射装置是格栅 具有与检测器行成一定角度的叶片。 辐射发射可以与电网运动同步,以优化特定电网,辐射源或检查程序的射线照片。 该装置实现了一种用于通过在辐射暴露期间以一个行程单向移动网格以渐近减小的速度分布来降低具有传感器阵列的放射线照相检测器中的莫尔图案的方法,使得网格运动保持多个不同的辐射曝光时间 。