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1. 发明申请

WO2004111625A1 VEHICLE MOUNTED INSPECTION SYSTEMS AND METHODS 审中-公开
标题翻译：车辆安装检查系统和方法
公开(公告)号：WO2004111625A1
公开(公告)日：2004-12-23
申请号：PCT/US2004/017532
申请日：2004-06-03
申请人： VARIAN MEDICAL SYSTEMS TECHNOLOGIES, INC. , JOHNSON, James, H. , BJORKHOLM, Paul
发明人： JOHNSON, James, H. , BJORKHOLM, Paul
IPC分类号： G01N23/04
CPC分类号： G01V5/0016 , G01N23/04
摘要： Radiation scanning systems to inspect objects are disclosed comprising a first vehicle supporting a radiation source. A second vehicle supports a detector. The source and the detector may be moved to scan an object, such as a cargo conveyance, between the vehicles. The first and second vehicles may having an expandable length and the source and detector may be moved across the expandable length, to scan long objects. The radiation source may be adapted to emit a vertically diverging beam of radiation, such as a fan beam. The radiation may be X-ray radiation, for example. The vehicle may comprise a truck and an expandable trailer releasably coupled to the truck. The trailer may comprise telescoping rails. The first and second vehicles may be driven to an inspection site, where they may be rapidly deployed. Methods of inspecting objects are disclosed, as well.
摘要翻译：公开了用于检查物体的辐射扫描系统，其包括支撑辐射源的第一车辆。第二车辆支持检测器。源和检测器可以被移动以在车辆之间扫描诸如货物运输工具之类的物体。第一和第二车辆可以具有可扩展的长度，并且源和检测器可以在可扩展的长度上移动，以扫描长的物体。辐射源可以适于发射垂直发散的辐射束，例如扇形光束。辐射可以是例如X射线辐射。车辆可以包括卡车和可释放地联接到卡车的可膨胀拖车。拖车可以包括伸缩轨道。第一和第二车辆可以被驱动到检查现场，在那里它们可以被快速部署。还公开了检查对象的方法。

2. 发明申请

WO2004070421A3 RADIATION SCANNING OF CARGO CONVEYANCES AT SEAPORTS AND THE LIKE 审中-公开
公开(公告)号：WO2004070421A3
公开(公告)日：2004-08-19
申请号：PCT/US2004/002525
申请日：2004-01-30
申请人： VARIAN MEDICAL SYSTEMS TECHNOLOGIES, INC. , BJORKHOLM, Paul
发明人： BJORKHOLM, Paul
IPC分类号： G21K5/10
摘要： A radiation scanning system comprises a radiation source and a radiation detector that are proximate a crane system that moves objects between the source and the detector for scanning. The source and/or detector may be supported by the crane system or may be near to the crane system. Preferably, the source and detector are supported by the crane system or they are within a profile defined by the crane system. The radiation scanning system is particularly suited to scan cargo conveyances, such as sea cargo conveyances, as they are being removed from or loaded onto a ship. Method of examining objects are disclosed, as well.

3. 发明申请

WO2005084351A2 OBJECT EXAMINATION BY DUAL ENERGY RADIATION SCANNING AND DELAYED NEUTRON DETECTION 审中-公开
标题翻译：双能量辐射扫描和延迟中子检测的对象检查
公开(公告)号：WO2005084351A2
公开(公告)日：2005-09-15
申请号：PCT/US2005/006808
申请日：2005-02-28
申请人： VARIAN MEDICAL SYSTEMS TECHNOLOGIES, INC. , CLAYTON, James, E. , BJORKHOLM, Paul
发明人： CLAYTON, James, E. , BJORKHOLM, Paul
CPC分类号： G01V5/0091 , G01N23/04 , G01T3/00 , G01V5/0041 , G01V5/0069
摘要： In one embodiment, a method of examining contents of an object comprises scanning an object at first and second radiation energies, detecting radiation at the first and second energies, and calculating a first function of the radiation detected at the first and second energies, for corresponding pixels. A pixel is a projection of radiation through the object onto the detector. The first functions of a plurality of pixels are grouped and a second function of the group is analyzed to determine whether the object at least potentially contains material having an atomic number greater than the predetermined atomic number. The second function may be compared to a third function, which may be a threshold having a value based, at least in part, on material having a predetermined atomic number. Delayed neutrons may be detected to determine whether the material is nuclear material. Systems are also disclosed.
摘要翻译：在一个实施例中，检查对象的内容的方法包括以第一和第二辐射能量扫描对象，检测第一和第二能量处的辐射，以及计算在第一和第二能量处检测到的辐射的第一函数，用于相应的像素。像素是通过物体的辐射到检测器上的投影。多个像素的第一功能被分组，并且分析该组的第二功能以确定对象是否至少潜在地包含原子序数大于预定原子序数的材料。第二功能可以与第三功能进行比较，第三功能可以是具有至少部分地基于具有预定原子数的材料的值的阈值。可以检测延迟中子以确定材料是否为核材料。还披露了系统。

4. 发明申请

WO2005084352A2 DUAL ENERGY RADIATION SCANNING OF OBJECTS 审中-公开
标题翻译：对象的双能量辐射扫描
公开(公告)号：WO2005084352A2
公开(公告)日：2005-09-15
申请号：PCT/US2005/006809
申请日：2005-02-28
申请人： VARIAN MEDICAL SYSTEMS TECHNOLOGIES, INC. , BJORKHOLM, Paul
发明人： BJORKHOLM, Paul
CPC分类号： G01V5/0091 , G01N23/04 , G01T3/00 , G01V5/0041 , G01V5/0069
摘要： In one embodiment, a method of examining an object is disclosed comprising scanning an object at first and second radiation energies, detecting radiation at the first and second energies, and calculating a function of the radiation detected at the first and second energies. The function may be calculated for corresponding portions of the object. It is determined whether the object at least potentially comprises high atomic number material having an atomic number greater than a predetermined atomic number based, at least in part, on the function. The function may be a ratio. The function may be compared to a second function, which may be a threshold having a value based, at least in part, on material of the predetermined atomic number. The second function may be the same as the first function.
摘要翻译：在一个实施例中，公开了一种检查物体的方法，包括以第一和第二辐射能量扫描物体，检测第一和第二能量处的辐射，以及计算在第一和第二能量处检测的辐射的函数。可以对对象的相应部分计算该功能。至少部分地基于该功能，确定对象是否至少潜在地包括具有大于预定原子序数的原子序数的高原子序数材料。该功能可以是一个比率。该功能可以与第二功能进行比较，第二功能可以是具有至少部分地基于预定原子序号的材料的值的阈值。第二功能可以与第一功能相同。

5. 发明申请

WO2004097337A1 RADIATION SOURCES AND RADIATION SCANNING SYSTEMS WITH IMPROVED UNIFORMITY OF RADIATION INTENSITY 审中-公开
标题翻译：具有辐射强度均匀性的辐射源和辐射扫描系统
公开(公告)号：WO2004097337A1
公开(公告)日：2004-11-11
申请号：PCT/US2004/012511
申请日：2004-04-23
申请人： VARIAN MEDICAL SYSTEMS TECHNOLOGIES, INC. , BJORKHOLM, Paul , CLAYTON, James, E.
发明人： BJORKHOLM, Paul , CLAYTON, James, E.
IPC分类号： G01B15/06
CPC分类号： H01J35/24 , G21K1/093 , H01J35/14
摘要： A radiation source is disclosed comprising a source of charged particles that travel along a path. Target material lies along the path to generate radiation upon impact by the beam. A magnet is provided to deflect the beam prior to impacting the target. The magnet may generate a time-varying magnetic field or a constant magnetic field. A constant magnetic field may be varied spatially across the beam. The magnet may be an electromagnet or a permanent magnet. In one example, deflection of the beam results in impact of the beam on the target along a plurality of axes. In another example, portions of the beam are differentially deflected. The source may thereby irradiate an object to be scanned with more uniform radiation. The charged particles may be electrons or protons and the radiation may be X-ray or gamma ray radiation, or neutrons. Scanning systems incorporating such sources, methods of generating radiation and methods of examining objects are disclosed, as well.
摘要翻译：公开了一种辐射源，其包括沿着路径行进的带电粒子源。目标材料位于路径上，以在梁受到冲击时产生辐射。提供磁体以在撞击目标之前偏转光束。磁体可产生时变磁场或恒定磁场。恒定的磁场可以在横跨射束的空间上变化。磁体可以是电磁体或永磁体。在一个示例中，光束的偏转导致沿着多个轴的光束在目标上的冲击。在另一示例中，梁的部分被差异偏转。因此，源可以以更均匀的辐射照射待扫描的物体。带电粒子可以是电子或质子，并且辐射可以是X射线或γ射线辐射或中子。还公开了包含这些源的扫描系统，产生辐射的方法和检查对象的方法。

6. 发明公开

EP1733254A2 OBJECT EXAMINATION BY DUAL ENERGY RADIATION SCANNING AND DELAYED NEUTRON DETECTION 审中-公开
标题翻译：调查对象通过两种能量辐射扫描
公开(公告)号：EP1733254A2
公开(公告)日：2006-12-20
申请号：EP05735258.5
申请日：2005-02-28
申请人： Varian Medical Systems Technologies, Inc.
发明人： CLAYTON, James, E. , BJORKHOLM, Paul
IPC分类号： G01V5/00 , G01T1/00
CPC分类号： G01V5/0091 , G01N23/04 , G01T3/00 , G01V5/0041 , G01V5/0069
摘要： In one embodiment, a method of examining contents of an object (2040) comprising scanning (2000a) an object (2040) at first and second radiation energies (2060a)(2060b), detecting radiation at the first and second energies (2060a)(2060b), and calculating a first function of the radiation detected at the first and second energies, for corresponding pixels. A pixel is a projection of radiation through the object (2040) onto the detector (2070a). The first functions of a plurality of pixels are grouped and a second function of the group is analyzed to determine whether the object (2040) at least potentially contains material having an atomic number greater than the predetermined atomic number. The second function may be compared to a third function, which may be a threshold having a value based, at least in part, on material having a predetermined atomic number. Delayed neutrons may be detected to determine whether the material is nuclear material. Systems are also disclosed.

7. 发明公开

EP1623186A1 RADIATION SOURCES AND RADIATION SCANNING SYSTEMS WITH IMPROVED UNIFORMITY OF RADIATION INTENSITY 有权转让
标题翻译：辐射源和辐射扫描系统具有改进的均匀辐射强度
公开(公告)号：EP1623186A1
公开(公告)日：2006-02-08
申请号：EP04750508.6
申请日：2004-04-23
申请人： Varian Medical Systems Technologies, Inc.
发明人： BJORKHOLM, Paul , CLAYTON, James, E.
IPC分类号： G01B15/06
CPC分类号： H01J35/24 , G21K1/093 , H01J35/14
摘要： A radiation source is disclosed comprising a source of charged particles that travel along a path. Target material lies along the path to generate radiation upon impact by the beam. A magnet is provided to deflect the beam prior to impacting the target. The magnet may generate a time-varying magnetic field or a constant magnetic field. A constant magnetic field may be varied spatially across the beam. The magnet may be an electromagnet or a permanent magnet. In one example, deflection of the beam results in impact of the beam on the target along a plurality of axes. In another example, portions of the beam are differentially deflected. The source may thereby irradiate an object to be scanned with more uniform radiation. The charged particles may be electrons or protons and the radiation may be X-ray or gamma ray radiation, or neutrons. Scanning systems incorporating such sources, methods of generating radiation and methods of examining objects are disclosed, as well.

8. 发明公开

EP1730502A2 DUAL ENERGY RADIATION SCANNING OF OBJECTS 有权转让
标题翻译：每个对象都有两种能量辐射扫描
公开(公告)号：EP1730502A2
公开(公告)日：2006-12-13
申请号：EP05735520.8
申请日：2005-02-28
申请人： Varian Medical Systems Technologies, Inc.
发明人： BJORKHOLM, Paul
IPC分类号： G01N23/00
CPC分类号： G01V5/0091 , G01N23/04 , G01T3/00 , G01V5/0041 , G01V5/0069
摘要： In one embodiment, a method of examining contents of an object (410) is disclosed comprising scanning an object (410) at first and second radiation energies, detecting radiation at the first and second energies, and calculating a function of the radiation detected at the first and second energies. The function may be calculated for corresponding portions of the object (410). It is determined whether the object (410) at least potentially comprises high atomic number material having an atomic number greater than a predetermined atomic number based, at least in part, on the function. The function may be a ratio. The function may be compared to a second function, which may be a threshold having a value based, at least in part, on material of the predetermined atomic number. The second function may be the same as the first function.

9. 发明公开

EP1540664A2 RADIATION SOURCES AND COMPACT RADIATION SCANNING SYSTEMS 有权
标题翻译：辐射源
公开(公告)号：EP1540664A2
公开(公告)日：2005-06-15
申请号：EP03765674.1
申请日：2003-07-18
申请人： Varian Medical Systems Technologies, Inc.
发明人： BJORKHOLM, Paul
IPC分类号： G21G1/00
CPC分类号： G01V5/0016 , H01J35/16 , H01J2235/087
摘要： An X-ray source is disclosed comprising a source of high energy electrons that travel along a longitudinal path. Target material lies along the longitudinal path and X-ray radiation is generated due to impact of the high energy electrons with the target. Shielding material is provided around at least a portion of the target. The shielding material defines a slot extending from the target to an exterior surface of the shielding material, to allow passage of generated radiation. The slot has an axis transverse to the longitudinal path. The axis may be perpendicular longitudinal path. The shielding material may define a plurality of slots having transverse axes. The source of high energy electrons may be a linear accelerator, for example. Scanning systems incorporating such sources are also disclosed. The scanning system comprises a conveying system having a longitudinal axis and the radiation source may be positioned so that the longitudinal path forms an acute angle with respect to the longitudinal axis, to decrease the size of the scanning unit as compared to a unit where the longitudinal axis is perpendicular to the longitudinal path. The longitudinal axis may be parallel to the longitudinal path, to form a more compact scanning system. A plurality of slots may be defined in the shielding material and a corresponding number of conveying systems may be provided to examine a plurality of objects concurrently. Methods of generating radiation and methods of examining objects are also disclosed.

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