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公开(公告)号：EP2689270B1
公开(公告)日：2018-12-05
申请号：EP12718466.1
申请日：2012-03-26
CPC分类号： G01T1/2033 , C09K9/02 , C09K11/06 , C09K2211/10 , C09K2211/1007 , C09K2211/1011 , C09K2211/1029 , C09K2211/1088 , G01T1/203 , G01T3/06 , G21K4/00
摘要： Embodiments of the invention provide a scintillator material, a scintillator system, and/or a method of detecting incident radiation using a scintillator material, or scintillator system, comprising a polymer material that comprises chromophores. Additional embodiments provide a scintillator material, scintillator system, and/or a method of detecting incident radiation using a scintillator material, or scintillator system, comprising a polymer material having one, two, three, or more, organic dyes dissolved therein wherein the polymer material having the one, two, three, or more dyes dissolved therein comprises chromophores. At least one of the dyes, termed the base dye, has a concentration in the range 0.5 to 3.5 mol/L. In a specific embodiment, the base dye has a concentration in the range 1.0 to 3.0 mol/L. This base dye concentration is high enough to achieve a substantial triplet-triplet state annihilation rate despite the negligible diffusion of the dye in the rigid polymer matrix.
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公开(公告)号：EP1592991A1
公开(公告)日：2005-11-09
申请号：EP04709854.6
申请日：2004-02-10
发明人： WALKER, James, K.
CPC分类号： G02B6/02038 , B29D11/00682 , G02B1/045 , G02B6/4403
摘要： The subject invention pertains to a method for high speed, continuous manufacture of graded refractive index polymer optical fiber. The subject fiber material may be organic or perfluorinated. The subject method can include first forming energy activatable prepolymer compositions containing additives. The prepolymer compositions can be extruded at low temperature through a multi-annular die and surrounded by a co-extruded concentric melt stream which forms a tube with good structural integrity. The prepolymer compositions contained in the tube can be maintained at a temperature for a time sufficient to form the desired graded index profile. Energy can be delivered to the prepolymer compositions which can cause an irreversible chemical transformation and forms a mechanically and thermally stable polymer. A continuous process of thermal annealing of the fiber can be used to minimize residual stress. Multiple fibers may be produced simultaneously in a variety of physical configurations.
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3.发明公开High efficiency, high resolution, real-time radiographic imaging system 失效射线照相系统在Echtzeit mit hohem Wirkungsgrad und hoherAuflösung。
公开(公告)号：EP0606732A1
公开(公告)日：1994-07-20
申请号：EP93309906.1
申请日：1993-12-09
CPC分类号： G01T1/201 , G01T1/203 , G02B6/02033
摘要： A new scintillating optical fiber is used in an array as a scintillator plate for imaging with high energy radiation, particles and the like. The scintillating optical fiber is an inner plastic core fiber which is transparent to visible radiation and has an index of refraction of about 1.45 or greater, and the inner plastic core fiber has a plastic cladding material which has an index of refraction less than that of the inner plastic core fiber. The inner plastic core fiber contains a polymeric matrix material; a metal moiety; and an organic fluorescent material. The scintillator plates are useful in producing high efficiency and high resolution radiographic systems for x-ray medical diagnosis or non-destructive inspection as well as non-destructive inspection with thermal neutrons. In medical x-ray applications, such as mammography, the need for lower doses of x-rays for a given image quality is met and exceeded by the higher detection efficiency of these scintillator plates and their associated electronic read-out system.
摘要翻译： 在阵列中使用新的闪烁光纤作为用于用高能辐射，粒子等进行成像的闪烁体板。 闪烁光纤是对可见光辐射透明并具有约1.45或更大的折射率的内部塑料芯纤维，并且内部塑料芯纤维具有塑性包层材料，其折射率小于 内塑芯纤维。 内部塑料芯纤维含有聚合物基质材料; 金属部分; 和有机荧光材料。 闪烁体板可用于生产用于X射线医学诊断或非破坏性检查的高效率和高分辨率射线照相系统以及具有热中子的非破坏性检查。 在诸如乳房X线照相术的医学X射线应用中，由于这些闪烁体板及其相关的电子读出系统的更高的检测效率，满足和超出了给定图像质量的较低剂量的x射线的需要。
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公开(公告)号：EP1592991B1
公开(公告)日：2006-11-22
申请号：EP04709854.6
申请日：2004-02-10
发明人： WALKER, James, K.
CPC分类号： G02B6/02038 , B29D11/00682 , G02B1/045 , G02B6/4403
摘要： The subject invention pertains to a method for high speed, continuous manufacture of graded refractive index polymer optical fiber. The subject fiber material may be organic or perfluorinated. The subject method can include first forming energy activatable prepolymer compositions containing additives. The prepolymer compositions can be extruded at low temperature through a multi-annular die and surrounded by a co-extruded concentric melt stream which forms a tube with good structural integrity. The prepolymer compositions contained in the tube can be maintained at a temperature for a time sufficient to form the desired graded index profile. Energy can be delivered to the prepolymer compositions which can cause an irreversible chemical transformation and forms a mechanically and thermally stable polymer. A continuous process of thermal annealing of the fiber can be used to minimize residual stress. Multiple fibers may be produced simultaneously in a variety of physical configurations.
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5.发明公开MATERIALS, METHOD, AND APPARATUS FOR DETECTING NEUTRONS AND IONIZING RADIATION 有权材料，方法和设备检测中子辐射和电离辐射的
公开(公告)号：EP2689270A2
公开(公告)日：2014-01-29
申请号：EP12718466.1
申请日：2012-03-26
IPC分类号： G01T3/06
CPC分类号： G01T1/2033 , C09K9/02 , C09K11/06 , C09K2211/10 , C09K2211/1007 , C09K2211/1011 , C09K2211/1029 , C09K2211/1088 , G01T1/203 , G01T3/06 , G21K4/00
摘要： Embodiments of the invention provide a scintillator material, a scintillator system, and/or a method of detecting incident radiation using a scintillator material, or scintillator system, comprising a polymer material that comprises chromophores. Additional embodiments provide a scintillator material, scintillator system, and/or a method of detecting incident radiation using a scintillator material, or scintillator system, comprising a polymer material having one, two, three, or more, organic dyes dissolved therein wherein the polymer material having the one, two, three, or more dyes dissolved therein comprises chromophores. At least one of the dyes, termed the base dye, has a concentration in the range 0.5 to 3.5 mol/L. In a specific embodiment, the base dye has a concentration in the range 1.0 to 3.0 mol/L. This base dye concentration is high enough to achieve a substantial triplet-triplet state annihilation rate despite the negligible diffusion of the dye in the rigid polymer matrix.
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公开(公告)号：EP0946948A1
公开(公告)日：1999-10-06
申请号：EP97941418.0
申请日：1997-09-05
发明人： WALKER, James, K. , JING, Zhenzue
IPC分类号： G03B42
CPC分类号： G03B42/02
摘要： This invention pertains to novel methods of radiography and novel screen-film cassettes with wide exposure latitude and/or high film contrast for use in radiography. The materials and methods of the subject invention can be used in mammography. In a specific example, this invention concerns the design of novel screen-film cassettes which can use at least one phosphor screen and multiple x-ray films in a single cassette. When used in mammography, this novel design enables additional breast images to be obtained on the faster, or slower, speed film from the same x-ray exposure used to produce a normal breast image on the normal speed film. These additional breast images provide high contrast information on the dense regions of the breast and in the edge areas of the compressed breast. These dense regions currently cause many missed diagnoses in breast cancer screening. The use of this novel multi-screen, multi-film cassette in mammography has the potential to improve the diagnostic accuracy in breast cancer detection, and simultaneously reduce patient breast glandular dose by eliminating unnecessary exposure due to film retake. Obtaining multiple film images of the same object from a single x-ray exposure can apply to many areas of medical and industrial radiography.
摘要翻译： 本发明涉及用于射线照相的具有宽曝光宽容度和/或高胶片对比度的射线照相术和新型屏幕胶片暗盒的新方法。 本发明的材料和方法可用于乳房摄影术。 在一个具体的例子中，本发明涉及新颖的屏幕胶片暗盒的设计，其可以在单个暗盒中使用至少一个荧光屏和多个X光胶片。 当用于乳腺摄影时，这种新颖的设计使得能够在用于在正常速度胶片上产生正常乳房图像的相同x射线曝光的较快或较慢速度胶片上获得额外的乳房图像。 这些额外的乳房图像在乳房的密集区域和压缩乳房的边缘区域提供高对比度信息。 目前这些密集地区在乳腺癌筛查中导致许多漏诊。 在乳房X线照相术中使用这种新型多屏幕多层胶片暗盒可以提高乳腺癌检测的诊断准确性，同时通过消除由于重新拍摄胶片引起的不必要的曝光来减少患者乳房腺体剂量。 从单次X射线照射获得同一物体的多个胶片图像可应用于医疗和工业放射照相的许多领域。
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公开(公告)号：EP0927373A2
公开(公告)日：1999-07-07
申请号：EP97941550.0
申请日：1997-09-12
发明人： WALKER, James, K.
CPC分类号： G02B6/02038 , G02B6/03633 , G02B6/06 , G02B23/26
摘要： The present invention is an image guide which has applications in such areas as endoscopy and industrial imaging. This invention utilizes gradient-index optical fiber in order to produce an image guide with improved performance characteristics. These improved performance characteristics include increased brightness, enhanced resolution, greater flexibility, and smaller diameter. The smaller diameter of the image guide permits access through smaller apertures in order to image inaccessible locations.
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