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公开(公告)号：US5637876A
公开(公告)日：1997-06-10
申请号：US554540
申请日：1995-11-07
CPC分类号： A61N5/1048 , G01T1/02 , G01T1/08 , G01T1/105 , A61N5/1071
摘要： A method for determining a level of exposure to radiation utilizes a radiation dosimeter comprising a substrate provided with a radiation sensitive layer or patch having an optical density which varies in accordance with the degree of radiation exposure. In addition, the substrate is provided with optically readable coding which identifies encoded mathematical parameters for enabling an automated calculation of dosage from a detected post-exposure optical density of the radiation sensitive material. The method comprises the step of optically measuring the optical density of the layer of radiation sensitive material prior to exposure thereof to radiation. In addition, the coding on the dosimeter substrate is scanned to automatically determine the encoded mathematical parameters. The method further comprises the steps of exposing the radiation sensitive layer to radiation and optically measuring a post-exposure optical density of the layer of radiation sensitive material. Subsequently, from the pre-exposure optical density, the post-exposure optical density, and the mathematical parameters and in accordance with a predetermined mathematical algorithm, a quantitative radiation dose to which the layer of radiation sensitive material was exposed is automatically computed. Preferably, the computed quantitative radiation dose is automatically indicated on a display. Each dosimeter may be provided with a unique identification code encoded in the bar coding on the dosimeter substrate, to enable memory storage of pre-exposure optical densities for multiple dosimeters. A look-up table may be stored in memory for enabling correction of computed optical densities where the post-exposure densities are measured at different times intervals after exposure.
摘要翻译： 用于确定辐射暴露水平的方法使用辐射剂量计，其包括具有辐射敏感层或贴片的基底，所述辐射敏感层或贴片具有根据辐射暴露程度而变化的光密度。 此外，衬底设置有光学可读编码，其识别编码的数学参数，以使得能够根据检测到的辐射敏感材料的后曝光光密度自动计算剂量。 该方法包括在暴露于辐射之前光学测量辐射敏感材料层的光密度的步骤。 另外，扫描剂量计底物上的编码以自动确定编码的数学参数。 该方法还包括以下步骤：将辐射敏感层暴露于辐射并光学测量辐射敏感材料层的后曝光光密度。 随后，从预曝光光密度，曝光后光密度和数学参数，并根据预定的数学算法，自动计算暴露于该辐射敏感材料层的定量辐射剂量。 优选地，计算出的定量辐射剂量在显示器上自动指示。 每个剂量计可以具有编码在剂量计基板上的条形编码中的唯一识别码，以便能够存储用于多个剂量计的预曝光光密度。 查找表可以存储在存储器中，以使得能够校正计算的光密度，其中在曝光后以不同的时间间隔测量后曝光密度。
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公开(公告)号：US06268602B1
公开(公告)日：2001-07-31
申请号：US09013828
申请日：1998-01-27
IPC分类号： G01J102
CPC分类号： A61N5/1048 , A61N5/1071 , G01T1/02 , G01T1/08 , G01T1/105
摘要： In a method for manufacturing a calibrated radiation dosimeter, a layer of radiation sensitive material is applied to a substrate, the radiation sensitive material having an optical density which varies in accordance with a degree of radiation exposure. A pre-exposure optical density of the layer of radiation sensitive material is optically measured and subsequently the layer of radiation sensitive material is exposed to a known dose of radiation. Thereafter, a post-exposure optical density of the layer of radiation sensitive material is optically measured. Using at least the pre-exposure optical density, the post-exposure optical density, and the known dose of radiation, one computes mathematical parameters defining a predetermined mathematical function. The computed mathematical parameters are applied in encoded form to the substrate (e.g., printed in bar code form on the substrate or a holder card).
摘要翻译： 在用于制造校准的辐射剂量计的方法中，将一层辐射敏感材料施加到基底上，该辐射敏感材料具有根据辐射暴露程度而变化的光密度。 光学测量辐射敏感材料层的预曝光光密度，随后辐射敏感材料层暴露于已知剂量的辐射。 此后，对光敏材料层的后曝光光密度进行光学测量。 至少使用预曝光光密度，曝光后光密度和已知辐射剂量，计算定义预定数学函数的数学参数。 所计算的数学参数以编码形式应用于衬底（例如，以基板上的条形码或持卡器印刷）。
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公开(公告)号：US5767520A
公开(公告)日：1998-06-16
申请号：US756010
申请日：1996-11-25
CPC分类号： A61N5/1048 , G01T1/02 , G01T1/08 , G01T1/105 , A61N5/1071
摘要： A method for determining a level of exposure to radiation utilizes a radiation dosimeter comprising a substrate provided with a radiation sensitive layer or patch having an optical density which varies in accordance with the degree of radiation exposure. In addition, the substrate is provided with optically readable coding which identifies one or more encoded mathematical parameters for enabling an automated calculation of dosage from a detected optical density change of the radiation sensitive material. In the method, the coding on the dosimeter substrate is scanned to automatically determine the encoded mathematical parameters, and a plurality of pre-exposure optical densities and a plurality of post-exposure optical densities of the layer of radiation sensitive material in a plurality of wavelength bands are optically measured. From these quantities, a quantitative radiation dose to which the layer of radiation sensitive material was exposed is automatically computed in accordance with a predetermined mathematical algorithm. Each dosimeter is provided with a unique identification code encoded in the bar coding on the dosimeter substrate, to enable memory storage of pre-exposure optical densities for multiple dosimeters.
摘要翻译： 用于确定辐射暴露水平的方法使用辐射剂量计，其包括具有辐射敏感层或贴片的基底，所述辐射敏感层或贴片具有根据辐射暴露程度而变化的光密度。 此外，衬底被提供有光学可读编码，其识别一个或多个编码的数学参数，以使得能够根据检测到的辐射敏感材料的光密度变化自动计算剂量。 在该方法中，扫描剂量计基板上的编码以自动确定编码的数学参数，并且多个预定曝光光密度和多个曝光后光密度的多个辐射敏感材料层 光带测量。 根据这些量，根据预定的数学算法自动计算暴露于辐射敏感材料层的定量辐射剂量。 每个剂量计具有编码在剂量计基板上的条形编码中的唯一识别码，以便能够存储用于多个剂量计的预曝光光密度。
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公开(公告)号：US5075004A
公开(公告)日：1991-12-24
申请号：US601536
申请日：1990-10-23
CPC分类号： B01D29/27 , B01D2201/24 , B01D2201/34
摘要： A filter apparatus having a bag filter subassembly for collecting contaminating material. The bag filter subassembly includes a bag filter having a top end portion and an integral collar. The collar has a lower portion fixedly connected to the bag filter, and has a middle portion to be supported within a vessel, and has a top lip portion to engage a cover plate of the vessel. The collar has a pivotal web portion disposed between the middle portion and the top lip portion, and has an inner surface with a groove having sidewalls, whereby internal pressure on the sidewalls pivot the top lip portion causing a sealing ring bearing area on the cover plate.
摘要翻译： 一种具有用于收集污染物质的袋式过滤器子组件的过滤装置。 袋式过滤器子组件包括具有顶端部分和整体套环的袋式过滤器。 套环具有固定地连接到袋式过滤器的下部，并且具有被支撑在容器内的中间部分，并且具有与容器的盖板接合的顶部唇部。 轴环具有设置在中间部分和顶部唇缘部分之间的枢转腹板部分，并且具有内表面，其具有具有侧壁的凹槽，由此侧壁上的内部压力使顶部唇部部分枢转，从而在盖板上形成密封环支承区域 。
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公开(公告)号：US5777341A
公开(公告)日：1998-07-07
申请号：US640088
申请日：1996-04-30
CPC分类号： A61N5/1048 , G01T1/02 , G01T1/08 , G01T1/105 , A61N5/1071
摘要： In a method for manufacturing a calibrated radiation dosimeter, a layer of radiation sensitive material is applied to a substrate, the radiation sensitive material having an optical density which varies in accordance with a degree of radiation exposure. A pre-exposure optical density of the layer of radiation sensitive material is optically measured and subsequently the layer of radiation sensitive material is exposed to a known dose of radiation. Thereafter, a post-exposure optical density of the layer of radiation sensitive material is optically measured. Using at least the pre-exposure optical density, the post-exposure optical density, and the known dose of radiation, one computes mathematical parameters defining a predetermined mathematical function. The computed mathematical parameters are applied in encoded form to the substrate (e.g., printed in bar code form on the substrate or a holder card).
摘要翻译： 在用于制造校准的辐射剂量计的方法中，将辐射敏感材料层施加到基底上，所述辐射敏感材料具有根据辐射暴露程度而变化的光密度。 光学测量辐射敏感材料层的预曝光光密度，随后辐射敏感材料层暴露于已知剂量的辐射。 此后，对光敏材料层的后曝光光密度进行光学测量。 至少使用预曝光光密度，曝光后光密度和已知辐射剂量，计算定义预定数学函数的数学参数。 所计算的数学参数以编码形式应用于衬底（例如，以基板上的条形码或持卡器印刷）。
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公开(公告)号：US5359200A
公开(公告)日：1994-10-25
申请号：US141173
申请日：1993-10-22
CPC分类号： G01T1/06
摘要： A radiation dosimeter for preparing a dosage map of a specific rotary canister of a blood radiating machine. This dosimeter includes a sandwich assembly of a first panel and a second panel and a gamma ray-sensitive film disposed therebetween, for mounting temporarily in the canister during gamma ray dosage and canister rotation.
摘要翻译： 一种用于制备血液辐射机的特定旋转罐的剂量图的辐射剂量计。 该剂量计包括第一面板和第二面板的夹层组件和设置在其间的伽马射线敏感薄膜，用于在γ射线剂量和罐旋转期间临时安装在罐中。
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