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公开(公告)号：US6033840A
公开(公告)日：2000-03-07
申请号：US172363
申请日：1998-10-14
申请人： Robert E. Dickerson
发明人： Robert E. Dickerson
CPC分类号： G03C5/16 , G03C1/0051 , Y10S430/164 , Y10S430/167
摘要： A radiation-sensitive medical diagnostic film for soft tissue imaging, particularly mammography, is disclosed. The film allows more rapid processing than films currently available for mammographic imaging and maintains acceptably high levels of image sharpness and low levels of mottle. The radiographic film records medical diagnostic images of soft tissue through (a) exposure by a single intensifying screen located to receive an image bearing source of X-radiation and (b) processing, including development, fixing and drying, in 90 seconds or less comprised of a film support transparent to radiation emitted by the intensifying screen and having opposed front and back major faces and an image-forming portion for providing, when imagewise exposed by the intensifying screen and processed, an average contrast in the range of from 2.5 to 3.5, measured over a density above fog of from 0.25 to 2.0. The image-forming portion is comprised of (i) a processing solution permeable front layer unit coated on the front major face of the support capable of absorbing up to 70 percent of the exposing radiation and containing less than 40 mg/dm.sup.2 of hydrophilic colloid and less than 40 mg/dm.sup.2 silver in the form of radiation-sensitive silver halide grains, and (ii) a processing solution permeable back layer unit coated on the back major face of the support containing less than 40 mg/dm.sup.2 of hydrophilic colloid, silver in the form of radiation-sensitive silver halide grains accounting for from 20 to 45 percent of the total radiation-sensitive silver halide present in the film, and a dye capable of providing an optical density of at least 0.40 in the wavelength region of the exposing radiation intended to be recorded and an optical density of less than 0.1 in the visible spectrum at the conclusion of film processing. Tabular grains account for greater than 50 percent of total grain projected area in the back layer unit, and the back layer unit is hardened to a greater degree than the front layer unit.
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32.发明授权Composition for processing roomlight handleable radiographic films using two-stage development 失效用于处理室内可处理的射线照相胶片的组合物，使用两阶段发展
公开(公告)号：US5935770A
公开(公告)日：1999-08-10
申请号：US144999
申请日：1998-09-01
CPC分类号： G03D3/06 , G03C1/36 , G03C5/26 , G03C5/261 , G03C5/264 , G03C5/383 , G03D13/06 , G03C1/0051 , G03C1/832 , G03C5/16
摘要： Black-and-white elements, such as radiographic films, can be processed in roomlight because they include certain light absorbing dyes and desensitizers. Processing is carried out by processing the exposed element using a two-stage process in the same light-tight processing container. In the first stage, development is initiated with a developing composition having a pH of from about 10 to about 12.5, and comprising an appropriate black-and-white developing agent in a concentration of from about 0.1 to about 0.5 mol/l, and a sulfite at from about 0.25 to about 0.7 mol/l. After an appropriate time, a fixing agent (other than a sulfite) is introduced into the processing container to provide a combined developing/fixing compositions, and development and fixing are carried out simultaneously. The processing method is carried out quickly, usually within about 90 seconds, including a washing step at the end. The presence of sulfite and high pH in both stages decolorize or deactivate the particulate dyes.
摘要翻译： 黑白元素，如放射照相胶片，可在室温下进行处理，因为它们包括某些光吸收染料和脱敏剂。 通过在相同的不透光处理容器中使用两阶段处理来处理暴露的元件来进行处理。 在第一阶段中，开发具有pH为约10至约12.5的显影组合物，并且包含浓度为约0.1至约0.5mol / l的合适的黑白显影剂，和 约0.25至约0.7mol / l的亚硫酸盐。 在适当的时间之后，将定影剂（亚硫酸盐除外）引入加工容器中以提供组合的显影/定影组合物，同时进行显影和定影。 处理方法通常在约90秒内快速进行，包括最后的洗涤步骤。 两相中亚硫酸盐和高pH值的存在使颗粒状染料脱色或失活。
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公开(公告)号：US5925505A
公开(公告)日：1999-07-20
申请号：US87477
申请日：1998-05-29
CPC分类号： G03C1/832 , G03C5/16 , G03C1/0051 , G03C1/46 , Y10S430/167
摘要： Direct X-ray films are disclosed capable of being handled in room light prior to and during processing. The films contain silver halide grains responsive to X-radiation that are sulfur sensitized. The films also contain a combination of processing solution bleachable dyes chosen to provide prior to processing (a) an average density of greater than 3.0 over a first, continuous spectral sensitivity range extending from a minimum wavlength of 320 nm over which the silver halide grains exhibit an absorption coefficient of at least 0.5 cm.sup.-1 and (b) a density of greater than 3.0 throughout a second spectral range including wavelengths of from 600 to 650 nm.
摘要翻译： 公开了直接X射线胶片，其能够在处理之前和处理期间在房间光下进行处理。 这些膜含有对硫敏感的X辐射响应的卤化银颗粒。 薄膜还包含加工溶液可漂白染料的组合，其选择在处理之前提供（a）在从卤化银颗粒显示的320nm的最小波长延伸的第一连续光谱灵敏度范围内平均密度大于3.0 至少0.5cm -1的吸收系数和（b）在包括600至650nm的波长的第二光谱范围内大于3.0的密度。
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公开(公告)号：US5908737A
公开(公告)日：1999-06-01
申请号：US46447
申请日：1998-03-23
IPC分类号： G03C5/26 , G03C1/005 , G03C1/36 , G03C1/46 , G03C1/83 , G03C5/16 , G03C5/30 , G03C5/305 , G03C5/38
摘要： Black-and-white elements, such as radiographic films, can be processed in roomlight because the developing composition includes a particulate opacifying agent, such as carbon black. Processing is carried out by processing the exposed element using a two-stage process in the same processing container. In the first stage, development is initiated with an opaque developing composition having a pH of from about 10 to about 12.5, and comprising an appropriate black-and-white developing agent in a concentration of from about 0.1 to about 0.5 mol/l, opacifying agent, and a sulfite at from about 0.1 to about 0.7 mol/l. After an appropriate time, a fixing agent (other than a sulfite) is introduced into the processing container to begin simultaneous development and fixing. The entire process in quite rapid, that is less than 90 seconds.
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35.发明授权Dual-coated radiographic elements with limited hydrophilic colloid coating coverages 失效双重涂层射线照相元件具有有限的亲水胶体涂层覆盖
公开(公告)号：US5876913A
公开(公告)日：1999-03-02
申请号：US864124
申请日：1997-05-28
IPC分类号： G03C1/00 , G03C1/005 , G03C1/035 , G03C1/30 , G03C1/46 , G03C1/74 , G03C1/76 , G03C5/16 , G03C5/26 , G03C1/047
CPC分类号： G03C5/16 , G03C1/0051 , G03C1/30 , G03C1/46 , G03C1/76 , G03C5/26 , Y10S430/167
摘要： Dual-coated radiographic elements are disclosed employing thin tabular grain emulsions that exhibit increased covering power and colder image tones by limiting hydrophilic colloid coating coverages in the thin tabular grain emulsion layers to less than 15 mg/dm.sup.2.
摘要翻译： 公开了采用薄片状颗粒乳剂的双重涂层射线照相元件，其通过将薄片状颗粒乳剂层中的亲水胶体涂层覆盖物限制为小于15mg / dm 2，从而显示出增加的覆盖力和较冷的图像色调。
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公开(公告)号：US5856077A
公开(公告)日：1999-01-05
申请号：US911483
申请日：1997-08-14
CPC分类号： G03C1/067 , G03C5/16 , G03C1/0051 , G03C2001/094 , G03C2200/52 , G03C2200/58 , G03C5/02 , Y10S430/167
摘要： A mammographic medical diagnostic radiographic element is disclosed that produces sharp images and is capable of being processed in less than 60 seconds. Each of imaging and antihalation fully forehardened hydrophilic colloid layer units are coated on the opposite sides of a transparent film support at a hydrophilic colloid coating coverage of less than 55 mg/dm.sup.2. The radiation-sensitive silver halide grains contained in the imaging layer unit are provided by a tabular grain emulsion coated at a coverage capable of providing a maximum density on processing of greater than 3.6. To provide a mid-scale contrast of greater than 3.0 and a lower scale contrast of greater than 2.2, the radiation-sensitive grains (a) exhibit an equivalent circular diameter coefficient of variation grain of less than 15 percent and (b) contain rhodium in a normalized molar concentration of less than 1.times.10.sup.-6 based on silver.
摘要翻译： 公开了一种乳房X线照相医学诊断放射线照相元件，其产生清晰的图像并且能够在不到60秒内进行处理。 在透明膜载体的相对侧上，以小于55mg / dm 2的亲水胶体涂层覆盖率将完全预硬化的亲水胶体层单元中的每一个成像和防光晕涂覆。 包含在成像层单元中的辐射敏感卤化银颗粒由涂覆在覆盖层上的片状颗粒乳剂提供，能够在大于3.6的处理上提供最大密度。 为了提供大于3.0的中等尺度对比度和大于2.2的较小尺度对比度，辐射敏感颗粒（a）表现出等于圆直径变异系数小于15％，（b）含有铑 基于银的归一化摩尔浓度小于1×10 -6。
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37.发明授权Radiographic elements exhibiting increased covering power and colder image tones 失效表现出增加覆盖力和较冷图像色调的放射照相元件
公开(公告)号：US5759759A
公开(公告)日：1998-06-02
申请号：US864088
申请日：1997-05-28
CPC分类号： G03C1/355 , G03C1/0051 , G03C1/04 , G03C5/16 , G03C1/053 , Y10S430/167
摘要： A dual-coated radiographic element is disclosed containing high bromide tabular grain emulsion layers exhibiting increased covering power and colder image tones. A covering power enhancing compound containing at least one divalent sulfur atom adsorbed to grain surfaces and a gelatino-vehicle are present in the emulsion layers. The emulsion layers additionally include a water soluble polymer chosen from the class consisting of polyacrylamide and dextran.
摘要翻译： 公开了一种双涂层放射线照相元件，其包含显示增加的覆盖力和较冷图像色调的高溴化物片状颗粒乳剂层。 包含至少一个吸附在颗粒表面上的二价硫原子和明胶载体的覆盖能力增强化合物存在于乳剂层中。 乳剂层还包括选自聚丙烯酰胺和葡聚糖的水溶性聚合物。
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公开(公告)号：US5407790A
公开(公告)日：1995-04-18
申请号：US192084
申请日：1994-02-04
CPC分类号： G03C5/17 , G03C2200/58 , Y10S206/809 , Y10S430/167
摘要： A system for orthopedic imaging is disclosed which consists of a supply of low crossover sensitometrically asymmetric radiographic elements and cassettes with various front and back intensifying screens to produce optimal bone images and useful images of surrounding flesh.
摘要翻译： 公开了一种用于整形外科成像的系统，其包括提供低交叉敏感不对称放射照相元件和具有各种前后强化屏幕的盒，以产生最佳骨图像和周围肉肉的有用图像。
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公开(公告)号：US5210014A
公开(公告)日：1993-05-11
申请号：US676913
申请日：1991-03-28
申请人： Richard B. Anderson , Robert E. Dickerson , Steven G. Link , Fred M. Macon , Wayne W. Weber, II
发明人： Richard B. Anderson , Robert E. Dickerson , Steven G. Link , Fred M. Macon , Wayne W. Weber, II
摘要： Dyes of formula (I) below are described. The dyes are useful as mid-green sensitizing dyes for photographic materials ##STR1## In the above formula, R1 and R3 are methyl or ethyl, at least one of R1 and R3 being methyl. R2 and R4 are substituted or unsubstituted C.sub.1 to C.sub.6 alkyl, provided that R2 and R4 are not both methyl. X1, X2, X3, and X4 are each independently methyl, methylthio, fluoro-substituted methyl or methylthio, or hydrogen, provided that at least one of X1 and X2 and at least one of X3 and X4 are not hydrogen. Y represents an ion as needed to balance the charge of the molecule. The dyes of formula (I) sensitize silver halide to light in the mid-green region of the spectrum.
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公开(公告)号：USH1105H
公开(公告)日：1992-09-01
申请号：US502341
申请日：1990-03-29
摘要： An asymmetric radiographic element is disclosed comprised of a transparent film support, silver halide emulsion layer units of differing sensitometric characteristics coated on opposite sides of the film support, and a processing solution decolorizable means for reducing crossover to less than 10 percent. The radiographic element is positioned between intensifying screens and mounted in a cassette for exposure to X-radiation. A feature is included for ascertaining which of the emulsion layer units is positioned nearest a source of X-radiation during exposure.
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