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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：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：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：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：US06285031B1
公开(公告)日：2001-09-04
申请号：US09216349
申请日：1998-12-18
申请人： Carl A. Listl , David F. Lewis
发明人： Carl A. Listl , David F. Lewis
IPC分类号： G01T102
CPC分类号： G01T1/06
摘要： A method and associated apparatus for monitoring exposure to radiation, with compensation for temperature variation of a sensor and variations in the amount of radiation sensitive material in a dosimeter used in the method. The method utilizes a radiation dosimeter having a layer of radiation sensitive material on a substrate, the radiation sensitive material having an optical absorbance which varies in accordance with degree of radiation exposure and wavelength and which also varies in dependence on temperature. The radiation sensitive layer includes a substantially radiation impervious substance. The method comprises exposing the layer of radiation sensitive material to a dose of radiation, optically measuring a spectral absorbance of the exposed layer of radiation sensitive material within a range of wavelengths, examining the measured spectral absorbance of the exposed layer of radiation sensitive material to determine an absorbance coordinate and a wavelength coordinate of a predetermined point on a spectral absorbance curve of the exposed layer of radiation sensitive material, and determining a radiation dose value associated with the absorbance coordinate and the wavelength coordinate. Generally, the radiation dose value is determined by consulting a table of absorbance and wavelength coordinates with associated dose values which have been previously measured for a batch of the radiation sensitive material, the batch having a uniform absorbance coefficient and a common concentration of the radiation sensitive material. The method can automatically compensate for variations in the amount of radiation sensitive material by adjusting the absorbance value of the radiation sensitive material by a measured value of absorbance in the radiation impervious substance.
摘要翻译： 用于监测辐射暴露的方法和相关装置，其补偿传感器的温度变化和在该方法中使用的剂量计中的辐射敏感材料的量的变化。 该方法利用在衬底上具有辐射敏感材料层的辐射剂量计，该辐射敏感材料具有根据辐射暴露程度和波长而变化的光吸收率，并且还根据温度变化。 辐射敏感层包括基本上不透辐射的物质。 该方法包括将辐射敏感材料层暴露于辐射剂量，在波长范围内光学测量辐射敏感材料暴露层的光谱吸光度，检查辐射敏感材料暴露层的测量光谱吸光度，以确定 辐射敏感材料的曝光层的光谱吸收曲线上的预定点的吸光度坐标和波长坐标，以及确定与吸光度坐标和波长坐标相关联的辐射剂量值。 一般来说，辐射剂量值是通过咨询吸光度和波长坐标表来确定的，其中已经测量了一批辐射敏感材料的相关剂量值，该批次具有均匀的吸光度系数和辐射敏感的共同浓度 材料。 该方法可以通过将辐射敏感材料的吸光度值通过辐射不透性物质中的吸光度的测量值来自动补偿辐射敏感材料的量的变化。
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公开(公告)号：US5084623A
公开(公告)日：1992-01-28
申请号：US652328
申请日：1991-02-07
申请人： David F. Lewis , Carl A. Listl
发明人： David F. Lewis , Carl A. Listl
摘要： A multi-ply radiation dosage indicator, and method of manufacture, is disclosed including a first ply having visible indicia thereon and a second ply having a radiation sensitive zone overlying the indicia of the first ply. The radiation sensitive zone is capable of changing opacity in response to exposure to a radiation dosage exceeding a predetermined threshold so as to change the visibility of the indicia thereby providing an indication as to whether the indicator has become irradiated. An optical filter ply may be provided overlying the indicia, and the indicator also may be provided with a transparent protective outer ply. A pressure sensitive adhesive ply having a removable release sheet is employed for attaching the indicator to a substrate.
摘要翻译： 公开了一种多层辐射剂量指示剂及其制造方法，包括其上具有可见标记的第一层和具有覆盖第一层标记的辐射敏感区的第二层。 辐射敏感区域能够响应于暴露于超过预定阈值的辐射剂量而改变不透明度，以便改变标记的可见度，从而提供关于指示剂是否已经照射的指示。 可以在标记上方设置滤光片层，并且指示器还可以设置有透明的保护性外层。 使用具有可移除的脱模片的压敏粘合剂层将指示剂附接到基底。
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公开(公告)号：US08212203B2
公开(公告)日：2012-07-03
申请号：US12710004
申请日：2010-02-22
申请人： David F. Lewis , Carl A. Listl , Xiang Yu
发明人： David F. Lewis , Carl A. Listl , Xiang Yu
IPC分类号： G01D18/00
CPC分类号： G01T1/04
摘要： A radiation dosimetry method and associated devices for carrying out the method are disclosed herein. More particularly, a method and associated apparatus which compensates for variations in amounts of a radiation sensitive material in a radiation dosimetry film is provided.
摘要翻译： 本文公开了一种用于实施该方法的放射剂量测定方法和相关装置。 更具体地，提供了补偿辐射剂量测定膜中的辐射敏感材料的量的变化的方法和相关设备。
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公开(公告)号：US5051597A
公开(公告)日：1991-09-24
申请号：US477585
申请日：1990-02-09
摘要： A multi-ply radiation dosage indicator, and method of manufacture, is disclosed including a first ply having visible indicia thereon and a second ply having a radiation sensitive zone overlying the indicia of the first ply. The radiation sensitive zone is capable of changing opacity in response to exposure to a radiation dosage exceeding a predetermined threshold so as to change the visibility of the indicia thereby providing an indication as to whether the indicator has become irradiated. An optical filter ply may be provided overlying the indicia, and the indicator also may be provided with a transparent protective outer ply. A pressure sensitive adhesive ply having a removable release sheet is employed for attaching the indicator to a substrate.
摘要翻译： 公开了一种多层辐射剂量指示剂及其制造方法，包括其上具有可见标记的第一层和具有覆盖第一层标记的辐射敏感区的第二层。 辐射敏感区域能够响应于暴露于超过预定阈值的辐射剂量而改变不透明度，以便改变标记的可见度，从而提供关于指示剂是否已经照射的指示。 可以在标记上方设置滤光片层，并且指示器还可以设置有透明的保护性外层。 使用具有可移除的脱模片的压敏粘合剂层将指示剂附接到基底。
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公开(公告)号：US20100213362A1
公开(公告)日：2010-08-26
申请号：US12710004
申请日：2010-02-22
申请人： David F. Lewis , Carl A. Listl , Xiang Yu
发明人： David F. Lewis , Carl A. Listl , Xiang Yu
CPC分类号： G01T1/04
摘要： A radiation dosimetry method and associated devices for carrying out the method are disclosed herein. More particularly, a method and associated apparatus which compensates for variations in amounts of a radiation sensitive material in a radiation dosimetry film is provided.
摘要翻译： 本文公开了一种用于实施该方法的放射剂量测定方法和相关装置。 更具体地，提供了补偿辐射剂量测定膜中的辐射敏感材料的量的变化的方法和相关设备。
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公开(公告)号：US07482601B2
公开(公告)日：2009-01-27
申请号：US11282095
申请日：2005-11-17
申请人： David F. Lewis , Carl A. Listl , Xiang Yu
发明人： David F. Lewis , Carl A. Listl , Xiang Yu
CPC分类号： G03F7/025 , A61B5/1075 , A61N5/1048
摘要： An article of manufacture comprising a radiation sensitive material, and a measuring scale that is part of the radiation sensitive material. A method of measuring at least one parameter relating to an irradiated material is also described. A radiation sensitive material including a measuring scale is exposed to radiation and at least one parameter relating to one or more exposed areas of the material is measured by reference to the measuring scale on the material.
摘要翻译： 包括辐射敏感材料的制品和作为辐射敏感材料的一部分的测量刻度。 还描述了测量与被照射材料有关的至少一个参数的方法。 包括测量刻度的辐射敏感材料暴露于辐射，并且通过参考材料上的测量刻度来测量与材料的一个或多个暴露区域有关的至少一个参数。
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