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公开(公告)号：US6158888A
公开(公告)日：2000-12-12
申请号：US75670
申请日：1998-05-11
申请人： James K. Walker , Zhenxue Jing
发明人： James K. Walker , Zhenxue Jing
IPC分类号： G03B42/02
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： 本发明涉及用于放射照相术的新型放射摄影方法和具有宽曝光宽容度和/或高胶片对比度的新型屏幕胶片盒。 本发明的材料和方法可用于乳房X线照相术。 在具体示例中，本发明涉及可以在单个盒中使用至少一个荧光屏和多个X射线胶片的新型屏幕胶片盒的设计。 当用于乳房X线照相术时，这种新颖的设计使得可以在用于在正常速度胶片上产生正常乳房图像的相同x射线曝光的更快或更慢的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中提供高对比度信息。 目前这些密集区域在乳腺癌筛查中引起许多漏诊。 在乳腺X线照相术中使用这种新颖的多屏幕多层胶片具有提高乳腺癌检测诊断准确性的潜力，同时通过消除由于膜再次引起的不必要的暴露而同时降低患者的乳腺剂量。 从单次X射线曝光获得同一物体的多个胶片图像可以应用于医疗和工业射线照相的许多领域。
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公开(公告)号：US6115523A
公开(公告)日：2000-09-05
申请号：US725779
申请日：1996-10-04
CPC分类号： A61B1/2676 , A61B1/0017 , A61B1/07 , A61B1/042
摘要： The subject invention pertains to a system for imaging the human airway having highly advantageous optical and physical characteristics. In a specific embodiment, the human airway can be imaged during the intubation procedure. The excellent characteristics of the imaging system of the subject invention result, in part, from the use of plastic optic fibers. Plastic fibers are more robust than the glass optical fibers used in currently available imaging systems, and are therefore capable of being bent and/or twisted with less concern of breakage. In addition, the lower costs of plastic fibers enables scopes of the subject invention, in a specific embodiment, to be manufactured for single patient use thereby eliminating the requirement for cleaning, special care, the maintenance of expensive inventory, and most importantly eliminating the opportunity for cross contamination between patients. A further aspect of the subject invention concerns a novel sheath which covers the portion of the imaging system which enters the patient. In this case, the sheath and its optional associated fiber optic illumination is disposable after each use.
摘要翻译： 本发明涉及一种用于对具有非常有利的光学和物理特性的人气道成像的系统。 在一个具体实施例中，人气道可以在插管过程中成像。 本发明的成像系统的优异特征部分地导致使用塑料光纤。 塑料纤维比当前可用的成像系统中使用的玻璃光纤更坚固，因此能够在较少的断裂的情况下弯曲和/或扭曲。 此外，由于塑料纤维的成本较低，在一个具体实施例中，本发明的范围能够为单个患者使用而制造，从而消除了对清洁，特别护理，维护昂贵库存的要求，最重要的是消除了机会 用于患者之间的交叉污染。 本发明的另一方面涉及一种新颖的护套，其覆盖进入患者的成像系统的部分。 在这种情况下，护套和其可选的相关联的光纤照明在每次使用之后是一次性的。
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13.发明授权
公开(公告)号：US5308986A
公开(公告)日：1994-05-03
申请号：US992140
申请日：1992-12-17
申请人： James K. Walker
发明人： James K. Walker
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 has an inner plastic core fiber which is transparent to visible radiation and has an index of refraction of about 1.45 or greater. 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 quench-resistant 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 the 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利用高能量辐射，粒子等进行成像的闪烁体板。 闪烁光纤具有对可见光辐射透明并具有约1.45或更高的折射率的内部塑料芯光纤。 内部塑料芯纤维具有塑料包层材料，其折射率小于内部塑料芯纤维的折射率。 内部塑料芯纤维含有聚合物基质材料; 金属部分; 和有机防淬火荧光材料。 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，由于闪烁体板及其相关联的电子读出系统的更高的检测效率，满足并超过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：US5010833A
公开(公告)日：1991-04-30
申请号：US240859
申请日：1988-09-06
CPC分类号： D05B35/02 , D05B35/102 , D05D2305/04
摘要： An edge detector for detecting the edge of fabric in a textile folding or guiding device for an industrial sewing machine. The detector includes a light source mounted adjacent to one surface of the fabric as the fabric enters the folder. The light source is positioned for directing light onto the surface of the fabric. A photodetector is located adjacent to the light source for receiving light reflected from the surface of the fabric. The photodetector provides an output signal in response to the light reflected from the surface of the fabric which is indicative of the position of the fabric in the folder.
摘要翻译： 一种边缘检测器，用于检测用于工业缝纫机的织物折叠或引导装置中织物的边缘。 当织物进入文件夹时，检测器包括邻近织物的一个表面安装的光源。 光源被定位成将光引导到织物的表面上。 光电检测器位于光源附近以接收从织物表面反射的光。 光电检测器响应于从织物的表面反射的光提供输出信号，其指示织物在文件夹中的位置。
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公开(公告)号：US07135133B2
公开(公告)日：2006-11-14
申请号：US09833833
申请日：2001-04-12
IPC分类号： B29D11/00
CPC分类号： G02B6/02038 , B29C47/00 , B29C47/0016 , B29C47/0023 , B29C47/003 , B29D11/00682
摘要： The present invention relates to a method and apparatus for manufacturing plastic optical transmission medium. The subject method and apparatus can produce a variety of optical transmission medium, including for example, graded refractive index polymer optical fiber, graded refractive index rod lens, and step index polymer optical fiber. The subject optical transmission medium have improved characteristics and efficiency, due, at least in part, to better control of the profile of the refractive index distribution and stable high temperature operation of the medium. High efficiency of manufacturing can be achieved by the subject method and apparatus which can permit continuous extrusion at high speed.
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16.发明授权
公开(公告)号：US5420959A
公开(公告)日：1995-05-30
申请号：US149750
申请日：1993-11-17
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 has an inner plastic core fiber which is transparent to visible radiation and has an index of refraction of about 1.45 or greater. 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 the 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利用高能量辐射，粒子等进行成像的闪烁体板。 闪烁光纤具有对可见光辐射透明并具有约1.45或更高的折射率的内部塑料芯光纤。 内部塑料芯纤维具有塑料包层材料，其折射率小于内部塑料芯纤维的折射率。 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，由于闪烁体板及其相关联的电子读出系统的更高的检测效率，满足并超过给定图像质量的较低剂量的x射线的需要。
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