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1. 发明授权

US06528797B1 Method and system for determining depth distribution of radiation-emitting material located in a source medium and radiation detector system for use therein 失效
公开(公告)号：US06528797B1
公开(公告)日：2003-03-04
申请号：US09549994
申请日：2000-04-14
申请人： Roland R. Benke , Kimberlee J. Kearfott , Douglas S. McGregor
发明人： Roland R. Benke , Kimberlee J. Kearfott , Douglas S. McGregor
IPC分类号： G01T120
CPC分类号： G01V5/02
摘要： A method, system and a radiation detector system for use therein are provided for determining the depth distribution of radiation-emitting material distributed in a source medium, such as a contaminated field, without the need to take samples, such as extensive soil samples, to determine the depth distribution. The system includes a portable detector assembly with an x-ray or gamma-ray detector having a detector axis for detecting the emitted radiation. The radiation may be naturally-emitted by the material, such as gamma-ray-emitting radionuclides, or emitted when the material is struck by other radiation. The assembly also includes a hollow collimator in which the detector is positioned. The collimator causes the emitted radiation to bend toward the detector as rays parallel to the detector axis of the detector. The collimator may be a hollow cylinder positioned so that its central axis is perpendicular to the upper surface of the large area source when positioned thereon. The collimator allows the detector to angularly sample the emitted radiation over many ranges of polar angles. This is done by forming the collimator as a single adjustable collimator or a set of collimator pieces having various possible configurations when connected together. In any one configuration, the collimator allows the detector to detect only the radiation emitted from a selected range of polar angles measured from the detector axis. Adjustment of the collimator or the detector therein enables the detector to detect radiation emitted from a different range of polar angles. The system further includes a signal processor for processing the signals from the detector wherein signals obtained from different ranges of polar angles are processed together to obtain a reconstruction of the radiation-emitting material as a function of depth, assuming, but not limited to, a spatially-uniform depth distribution of the material within each layer. The detector system includes detectors having different properties (sensitivity, energy resolution) which are combined so that excellent spectral information may be obtained along with good determinations of the radiation field as a function of position.

2. 发明授权

US06727505B2 Method and system for determining depth distribution of radiation-emitting material located in a source medium and radiation detector system for use therein 失效
标题翻译：用于确定位于源介质和放射线检测器系统中的辐射发射材料的深度分布的方法和系统，用于其中
公开(公告)号：US06727505B2
公开(公告)日：2004-04-27
申请号：US10299447
申请日：2002-11-19
申请人： Roland R. Benke , Kimberlee J. Kearfott , Douglas S. McGregor
发明人： Roland R. Benke , Kimberlee J. Kearfott , Douglas S. McGregor
IPC分类号： G01T120
CPC分类号： G01V5/02
摘要： A radiation detector system includes detectors having different properties (sensitivity, energy resolution) which are combined so that excellent spectral information may be obtained along with good determinations of the radiation field as a function of position.
摘要翻译：辐射检测器系统包括具有不同性质（灵敏度，能量分辨率）的检测器，其被组合，使得可以获得优异的光谱信息以及作为位置的函数的良好的辐射场确定。

3. 发明授权

US06815687B1 Method and system for high-speed, 3D imaging of optically-invisible radiation 失效
公开(公告)号：US06815687B1
公开(公告)日：2004-11-09
申请号：US09549464
申请日：2000-04-14
申请人： Clair J. Branch-Sullivan , Kimberlee J. Kearfott , Bozidar Stojadinovic , Douglas S. McGregor
发明人： Clair J. Branch-Sullivan , Kimberlee J. Kearfott , Bozidar Stojadinovic , Douglas S. McGregor
IPC分类号： H01L3100
CPC分类号： H01L27/14658
摘要： A high-speed, three-dimensional, gamma-ray imaging method and system as well as a detector and array of such detectors for use therein are provided which characterize radioactivity distributions in nuclear and radioactive waste and materials facilities by superimposing radiation images on a view of the environment using see-through display screens or shields to provide a stereoscopic view of the radiation. The method and system provide real-time visual feedback about the locations and relative strengths of radioactive sources. The method and system dynamically provide continuous updates to the displayed image illustrating changes, such as source movement. A pair of spaced gamma-ray cameras of a detector subsystem function like “gamma eyes”. A pair of CCD cameras may be coupled to the detector subsystem to obtain information about the physical architecture of the environment. A motion tracking subsystem is used to generate information on the user's position and head orientation to determine what a user “sees”. The invention exploits the human brain's ability to naturally reconstruct a 3D, stereoscopic image from 2D images generated by two “imagers” separated by a known angle(s) without the need for 3D mathematical image reconstruction. The method and system are not only tools for minimizing human exposure to radiation thus assisting in ALARA (As Low As Reasonably Achievable) planning, but also are helpful for identifying contamination in, for example, laboratory or industrial settings. Other optically-invisible radiation such as infrared radiation caused by smoldering fires may also be imaged. Detectors are manufactured or configured in curvilinear geometries (such as hemispheres, spheres, circles, arcs, or other arrangements) to enable sampling of the ionizing radiation field for determination of positional activity (absolute or relative amounts of ionizing radiation) or spectroscopy (energy distributions of photons). More than one detector system may be used to obtain three-dimensional information. The detector systems are specifically suitable for direct visualization of radiation fields.

4. 发明授权

US06806474B2 Method and system for detecting ionizing radiation 失效
标题翻译：检测电离辐射的方法和系统
公开(公告)号：US06806474B2
公开(公告)日：2004-10-19
申请号：US10214000
申请日：2002-08-07
申请人： Douglas S. McGregor , Kimberlee J. Kearfott
发明人： Douglas S. McGregor , Kimberlee J. Kearfott
IPC分类号： G01T100
CPC分类号： G01V5/02
摘要： A method and system for detecting ionizing radiation emitted by material located over an extended area are provided. The method and system include a radiation detector disposed within a detector space on a detection axis. An array of collimating louvers is positioned about the radiation detector and is movable between different polar positions or angles relative to the detection axis. A mechanism is provided for moving the array of collimating louvers between the different polar angles to collimate the ionizing radiation from different locations over the area. The detector produces electrical signals as a function of the polar positions of the array of collimating louvers.
摘要翻译：提供了一种用于检测位于延伸区域上方的材料发射的电离辐射的方法和系统。该方法和系统包括设置在检测轴上的检测器空间内的放射线检测器。准直百叶窗阵列围绕辐射检测器定位，并且可在相对于检测轴线的不同极性位置或角度之间移动。提供了用于在不同极角之间移动准直百叶窗阵列的机构，以准直来自该区域上的不同位置的电离辐射。检测器产生作为准直百叶窗阵列极坐标的函数的电信号。

5. 发明授权

US08274062B2 Integrative and real-time radiation measurement methods and systems 有权
标题翻译：综合和实时辐射测量方法和系统
公开(公告)号：US08274062B2
公开(公告)日：2012-09-25
申请号：US12960814
申请日：2010-12-06
申请人： Kimberlee J. Kearfott
发明人： Kimberlee J. Kearfott
IPC分类号： G01T1/11
CPC分类号： G01T1/10 , G01T1/11
摘要： A method of determining the radiation type and energy distribution of a radiation source that outputs radiation. The method including providing a plurality of detector materials and exposing the plurality of detector materials to the radiation. Each of the plurality of detector materials stores a signal in response to being exposed to the radiation. The signals are representative of the radiation. The plurality of detector materials is stimulated to output the signals as measured signals. These measured signals are used to determine the radiation type and energy distribution of the radiation.
摘要翻译：确定输出辐射的辐射源的辐射类型和能量分布的方法。该方法包括提供多个检测器材料并将多个检测器材料暴露于辐射。多个检测器材料中的每一个响应于暴露于辐射而存储信号。信号是辐射的代表。刺激多个检测器材料以输出信号作为测量信号。这些测量信号用于确定辐射的辐射类型和能量分布。

6. 发明授权

US08563947B2 Integrative and real-time radiation measurement methods and systems 有权
公开(公告)号：US08563947B2
公开(公告)日：2013-10-22
申请号：US13608377
申请日：2012-09-10
申请人： Kimberlee J. Kearfott
发明人： Kimberlee J. Kearfott
IPC分类号： G01T1/20
CPC分类号： G01T1/10 , G01T1/11
摘要： A method of determining the radiation type and energy distribution of a radiation source that outputs radiation. The method including providing a plurality of detector materials and exposing the plurality of detector materials to the radiation. Each of the plurality of detector materials stores a signal in response to being exposed to the radiation. The signals are representative of the radiation. The plurality of detector materials is stimulated to output the signals as measured signals. These measured signals are used to determine the radiation type and energy distribution of the radiation.

7. 发明授权

US07485877B2 Integrative and real-time radiation measurement methods and systems 失效
标题翻译：综合和实时辐射测量方法和系统
公开(公告)号：US07485877B2
公开(公告)日：2009-02-03
申请号：US11440974
申请日：2006-05-25
申请人： Kimberlee J. Kearfott
发明人： Kimberlee J. Kearfott
IPC分类号： H05B33/00
CPC分类号： G01T1/10 , G01T1/11
摘要： A method of determining the radiation type and energy distribution of a radiation source that outputs radiation. The method including providing a plurality of detector materials and exposing the plurality of detector materials to the radiation. Each of the plurality of detector materials stores a signal in response to being exposed to the radiation. The signals are representative of the radiation. The plurality of detector materials is stimulated to output the signals as measured signals. These measured signals are used to determine the radiation type and energy distribution of the radiation.
摘要翻译：确定输出辐射的辐射源的辐射类型和能量分布的方法。该方法包括提供多个检测器材料并将多个检测器材料暴露于辐射。多个检测器材料中的每一个响应于暴露于辐射而存储信号。信号是辐射的代表。刺激多个检测器材料以输出信号作为测量信号。这些测量信号用于确定辐射的辐射类型和能量分布。

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