公开(公告)号：US06269142B1

公开(公告)日：2001-07-31

申请号：US09371816

申请日：1999-08-11

申请人： Steven W. Smith

发明人： Steven W. Smith

IPC分类号： G01N2310

CPC分类号： G01V5/0016 ,  G01N23/20083 ,  G01V5/0025

摘要： Interrupted-Fan-Beam imaging is a method of producing back-scatter x-ray images from conventional line scan systems, such as those used for luggage and cargo inspection. Since back-scatter and transmission images are formed from different physical principles, the use of both images provides a more thorough security inspection. A mathematical relation relates the signal-to-noise ratio to the spatial resolution in an Interrupted-Fan-Beam image. When used in conjunction with typical operating values of x-ray systems, such as flux level and number of pixels, this relation provides the performance level of the Interrupted-Fan-Beam technique.

摘要翻译： 中断扇形光束成像是从传统的线扫描系统（例如用于行李和货物检查的系统）生成背散射x射线图像的方法。 由于背散射和透射图像由不同的物理原理形成，所以使用两个图像提供更彻底的安全检查。 数学关系将信噪比与中断风扇光束图像中的空间分辨率相关联。 当与x射线系统的典型工作值（例如通量水平和像素数）结合使用时，该关系提供了中断风扇束技术的性能水平。

公开(公告)号：US06552346B2

公开(公告)日：2003-04-22

申请号：US09834377

申请日：2001-04-12

申请人： Victor V. Verbinski ,  Scott T. Smith ,  Kenneth H. Valentine ,  Victor J. Orphan

发明人： Victor V. Verbinski ,  Scott T. Smith ,  Kenneth H. Valentine ,  Victor J. Orphan

IPC分类号： G01N2310

CPC分类号： G01N23/02 ,  G01V5/0016

摘要： A system and method of density detection in a target object involve irradiating the target object, detecting a first and second discrete number of photons penetrating the target object through respective first and second prescribed volumes and entering respective first and second radiation detectors. First and second numbers of photons detected by the first and second radiation detectors are counted, and a display output signal is generated in response to the first and second numbers. A graphical representation of the densities within the first and second volumes of the target object is displayed.

摘要翻译： 目标物体中密度检测的系统和方法包括照射目标物体，通过相应的第一和第二规定体积检测穿过目标物体的第一和第二离散数量的光子并进入相应的第一和第二辐射检测器。 对由第一和第二辐射检测器检测的第一和第二数量的光子进行计数，并且响应于第一和第二数量产生显示输出信号。 显示目标对象的第一和第二卷内的密度的图形表示。

公开(公告)号：US06721391B2

公开(公告)日：2004-04-13

申请号：US10116718

申请日：2002-04-03

申请人： Keith M. McClelland ,  Craig Dawson ,  Ying Huang ,  Andrea L. Whitson

发明人： Keith M. McClelland ,  Craig Dawson ,  Ying Huang ,  Andrea L. Whitson

IPC分类号： G01N2310

CPC分类号： G01V5/0083 ,  B64F1/368 ,  G06Q10/02 ,  H04L29/06 ,  H04L67/02 ,  H04L67/12 ,  H04L69/329

摘要： A computer readable medium encoded with a plurality of instructions for execution on at least one processor, the plurality of instructions performing a method of remote screening of items of baggage. The method includes steps of storing information about an item under inspection, linking a unique item identifier with the information to uniquely associate the information with the item under inspection and retrieving the information about the item under inspection in response to a request. The method also includes analyzing the information to determine a screening result for the item under inspection, and storing the screening result with the information about the item.

摘要翻译： 一种编码有用于在至少一个处理器上执行的多个指令的计算机可读介质，所述多个指令执行远程检查行李物品的方法。 该方法包括存储关于待检查项目的信息的步骤，将唯一的项目标识符与该信息相关联，以便将信息与正在检查的项目相关联，并且响应于请求检索关于被检查项目的信息。 该方法还包括分析信息以确定被检查项目的筛选结果，并将筛选结果与关于该项目的信息进行存储。

公开(公告)号：US06320193B1

公开(公告)日：2001-11-20

申请号：US09259418

申请日：1999-02-26

申请人： John L. Morrison ,  Alan G. Stephens ,  S. Blaine Grover

发明人： John L. Morrison ,  Alan G. Stephens ,  S. Blaine Grover

IPC分类号： G01N2310

CPC分类号： G01N23/06

摘要： An improved nuclear diagnostic method identifies a contained target material by measuring on-axis, mono-energetic uncollided particle radiation transmitted through a target material for two penetrating radiation beam energies, and applying specially developed algorithms to estimate a ratio of macroscopic neutron cross-sections for the uncollided particle radiation at the two energies, where the penetrating radiation is a neutron beam, or a ratio of linear attenuation coefficients for the uncollided particle radiation at the two energies, where the penetrating radiation is a gamma-ray beam. Alternatively, the measurements are used to derive a minimization formula based on the macroscopic neutron cross-sections for the uncollided particle radiation at the two neutron beam energies, or the linear attenuation coefficients for the uncollided particle radiation at the two gamma-ray beam energies. A candidate target material database, including known macroscopic neutron cross-sections or linear attenuation coefficients for target materials at the selected neutron or gamma-ray beam energies, is used to approximate the estimated ratio or to solve the minimization formula, such that the identity of the contained target material is discovered.

摘要翻译： 改进的核诊断方法通过测量透射穿过用于两个穿透辐射束能量的目标材料的轴上，单能未离子粒子辐射来识别包含的靶材料，并且应用特别开发的算法来估计宏观中子截面的比率 在两个能量处的未共挤出的粒子辐射，其中穿透辐射是中子束，或者在两个能量处的未被粒子辐射的线性衰减系数的比率，其中穿透辐射是伽马射线束。 或者，测量用于基于两个中子束能量下的未共面粒子辐射的宏观中子横截面或两个伽马射线能量下的未共面粒子辐射的线性衰减系数导出最小化公式。 使用候选目标材料数据库，包括已知的宏观中子截面或在所选择的中子或伽马射线能量下的目标材料的线性衰减系数近似估计的比例或解决最小化公式，使得 发现包含的目标材料。