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112 条记录 (耗时 0.036 秒)

    Radiographic elements exhibiting reduced pressure induced variances in sensitivity
    11.
    发明授权
    Radiographic elements exhibiting reduced pressure induced variances in sensitivity 失效
    显示减压的放射照相元件感应灵敏度差异

    公开(公告)号：US5391469A

    公开(公告)日：1995-02-21

    申请号：US143673

    申请日：1993-10-27

    申请人： Robert E. Dickerson

    发明人： Robert E. Dickerson

    IPC分类号： G03C1/00 ,  G03C1/005 ,  G03C1/035 ,  G03C1/46 ,  G03C5/17

    CPC分类号： G03C5/17 ,  G03C1/0051 ,  G03C1/46 ,  Y10S430/167

    摘要： Radiographic elements are disclosed each containing a support and, coated on the support, at least two high tabularity tabular grain emulsions. The tabular grains coated on the support exhibit a face centered cubic crystal lattice structure formed by silver bromide with a selected portion of the tabular grains additionally containing iodide substantially uniformly distributed through the crystal lattice structure in an overall concentration of at least 0.5 mole percent with the iodide concentration at any one grain site being less than 5 mole percent. The proportion of the tabular grains selected to contain iodide as well as the distribution of iodide within the tabular grains results in a reduction in pressure induced variance of radiographic imaging response as a function of applied pressure, such as that inadvertently applied during film handling and processing.

    摘要翻译： 公开射线照相元件，其各自包含支撑体，并且在支撑体上涂覆至少两个高平板状的片状颗粒乳剂。 涂覆在载体上的平片状晶粒呈现出由溴化银形成的面心立方晶格结构，其中片状颗粒的选定部分另外含有基本均匀分布在晶格结构中的碘化物，其总浓度至少为0.5摩尔％ 任何一个颗粒部位的碘浓度小于5摩尔％。 选择含有碘化物的片状颗粒的比例以及片状颗粒内的碘化物分布导致作为施加压力的函数的放射照相成像响应的压力诱导方差的降低，例如在胶片处理和加工期间无意中施加的压力诱导方差 。

    Radiographic screen/film assemblies with improved detection quantum efficiencies
    12.
    发明授权
    Radiographic screen/film assemblies with improved detection quantum efficiencies 失效
    具有改进检测量子效率的射线照相屏幕/胶片组件

    公开(公告)号：US5021327A

    公开(公告)日：1991-06-04

    申请号：US456889

    申请日：1989-12-26

    申请人： Phillip C. Bunch ,  Robert E. Dickerson

    发明人： Phillip C. Bunch ,  Robert E. Dickerson

    IPC分类号： G03C5/17

    CPC分类号： G03C5/17 ,  Y10S430/167

    摘要： Assemblies of double coated radiographic elements exhibiting sharply curtailed crossover and front and back intensifying screen pairs are disclosed. By choosing a front screen that exceeds a stated sharpness criterion, expressed in terms of modulation transfer factors (MTF), and a back screen and adjacent emulsion layer unit combination exhibiting a photicity at least twice that of the combination of the front screen and its adjacent emulsion layer unit an enhancement in detective quantum efficiency (DQE) is realized.

    摘要翻译： 公开了具有急剧缩减的交叉和前后增强屏幕对的双重涂层射线照相元件的组件。 通过选择超过规定的锐度准则的前屏幕，以调制传递因子（MTF）表示，并且背屏幕和相邻的乳剂层单元组合呈现出与前屏幕及其相邻的组合的至少两倍的光泽度 乳化层单位实现了检测量子效率（DQE）的提高。

    Mammography imaging method using high peak voltage and rhodium or tungsten anodes
    16.
    发明授权
    Mammography imaging method using high peak voltage and rhodium or tungsten anodes 失效
    使用高峰值电压和铑或钨阳极的乳房摄影成像方法

    公开(公告)号：US06887641B2

    公开(公告)日：2005-05-03

    申请号：US10299759

    申请日：2002-11-19

    申请人： Robert E. Dickerson ,  William E. Moore ,  David J. Steklenski

    发明人： Robert E. Dickerson ,  William E. Moore ,  David J. Steklenski

    IPC分类号： G03C1/04 ,  G03C1/08 ,  G03C1/18 ,  G03C1/29 ,  G03C1/46 ,  G03C5/16 ,  G03C5/17 ,  G03C5/26 ,  G03B42/02

    CPC分类号： G03C5/16 ,  G03C1/0051 ,  G03C1/04 ,  G03C1/08 ,  G03C1/18 ,  G03C1/29 ,  G03C1/46 ,  G03C5/17 ,  G03C5/26 ,  G03C2001/03541 ,  G03C2001/03594 ,  G03C2200/52 ,  G03C2200/58 ,  Y10S430/167

    摘要： A method of mammography imaging includes exposing a patient to a peak voltage greater than 29 kVp using X-radiation generating equipment comprising rhodium or tungsten anodes. The film used in this method comprises a cubic grain silver halide emulsion layer on one side of the support and a tabular grain silver halide emulsion layer on the other side. The cubic grain silver halide emulsion layer comprises a combination of first and second spectral sensitizing dyes that provides a combined maximum J-aggregate absorption on the cubic silver halide grains of from about 540 to about 560 nm. The first spectral sensitizing dye is an anionic benzimidazole-benzoxazole carbocyanine, the second spectral sensitizing dye is an anionic oxycarbocyanine. The cubic grain silver halide emulsion layer also includes a mixture of gelatin or a gelatin derivative and a second hydrophilic binder other than gelatin or a gelatin derivative. The cubic silver halide grains comprise from about 1 to about 20 mol % chloride and from about 0.25 to about 1.5 mol % iodide, both based on total silver in the cubic grain emulsion layer, which cubic silver halide grains have an average ECD of from about 0.65 to about 0.8 μm. Moreover, the cubic silver halide grains are doped with a hexacoordination complex compound within part or all of the innermost 95% of the grains. The film can be exposed to provide a black-and-white image having a d(γ)/d(log E) value greater than 5.

    摘要翻译： 乳房X线照相成像的方法包括使用包括铑或钨阳极的X射线发生设备将患者暴露于大于29kVp的峰值电压。 在该方法中使用的膜包括在载体的一侧上的立方晶粒卤化银乳剂层和另一侧上的片状卤化银乳剂层。 立方晶粒卤化银乳剂层包括第一和第二光谱增感染料的组合，其在约540至约560nm的立方体卤化银颗粒上提供组合的最大J-聚集体吸收。 第一种光谱增感染料是阴离子苯并咪唑 - 苯并恶唑碳菁，第二种光谱增感染料是一种阴离子型含氧花青。 立方晶粒卤化银乳剂层还包括明胶或明胶衍生物和明胶或明胶衍生物之外的第二亲水性粘合剂的混合物。 立方体卤化银颗粒包含约1至约20mol％的氯化物和约0.25至约1.5mol％的碘化物，均基于立方晶粒乳剂层中的总银，该立方体卤化银颗粒的平均ECD为约 0.65至约0.8μm。 此外，立方体卤化银颗粒在部分或全部最内95％的晶粒内掺杂六配位络合物。 可以暴露该膜以提供具有大于5的d（γ）/ d（log E）值的黑白图像。

    Blue spectrally sensitized film for radiography, imaging assembly and method
    17.
    发明授权
    Blue spectrally sensitized film for radiography, imaging assembly and method 失效
    蓝光谱增感胶片用于放射成像，成像组装和方法

    公开(公告)号：US06686116B1

    公开(公告)日：2004-02-03

    申请号：US10397435

    申请日：2003-03-26

    申请人： Robert E. Dickerson ,  Anthony Adin ,  Stephen A. Hershey ,  Richard F. Davis

    发明人： Robert E. Dickerson ,  Anthony Adin ,  Stephen A. Hershey ,  Richard F. Davis

    IPC分类号： G03C517

    CPC分类号： G03C5/16 ,  G03C1/047 ,  G03C1/16 ,  G03C1/29 ,  G03C1/46 ,  G03C5/17 ,  G03C5/26 ,  G03C2001/0055 ,  G03C2001/03511 ,  G03C2001/03535 ,  G03C2007/3025 ,  G03C2200/27 ,  G03C2200/52 ,  Y10S430/167 ,  Y10S430/168

    摘要： A blue-sensitive radiographic silver halide film comprises a silver halide emulsion layer comprising predominantly tabular silver halide grains that have an aspect ratio of at least 15, a grain thickness of at least 0.1 &mgr;m, and comprise at least 90 mol % bromide and up to 4 mol % iodide, based on total silver halide. Substantially all of the iodide is present in an internal localized portion of the tabular silver halide grains that excludes the surface of the grains. The tabular silver halide grains are dispersed in a hydrophilic polymeric vehicle mixture comprising at least 0.5% of oxidized gelatin, based on the total dry weight of the polymeric vehicle mixture in the emulsion layer. The tabular silver halide grains are spectrally sensitized using a combination of spectral sensitizing dyes to provide increased speed and reduced dye stain. The dyes have maximum J-aggregate absorptions on the tabular silver halide grains of from about 380 to about 500 nm, wherein the maximum J-aggregate absorption of one spectral sensitizing dye is from about 20 to about 50 nm lower in wavelength than the maximum J-aggregate absorption of the second spectral sensitizing dye.

    摘要翻译： 蓝色感光放射线卤化银膜包括卤化银乳剂层，其主要包含片状卤化银颗粒，其长宽比至少为15，晶粒厚度为至少0.1μm，并且包含至少90mol％的溴化物，直到 4mol％碘化物，基于总卤化银。 基本上所有的碘化物都存在于不排除颗粒表面的片状卤化银颗粒的局部部分内。 片状卤化银颗粒分散在包含至少0.5％氧化明胶的亲水性聚合物载体混合物中，基于乳液层中聚合物载体混合物的总干重。 片状卤化银颗粒使用光谱增感染料的组合进行光谱增感，以提高速度和减少染色剂染色。 这些染料在约380至约500nm的片状卤化银颗粒上具有最大的J-聚集体吸收，其中一种光谱增感染料的最大J-聚集体吸收值比最大J值低约20至约50nm 聚集的第二光谱增感染料的吸收。

    Asymmetric radiographic film for mammography and method of processing
    18.
    发明授权
    Asymmetric radiographic film for mammography and method of processing 失效
    用于乳房X线照相术的不对称放射照相胶片和加工方法

    公开(公告)号：US06680154B1

    公开(公告)日：2004-01-20

    申请号：US10431314

    申请日：2003-05-07

    申请人： Robert E. Dickerson

    发明人： Robert E. Dickerson

    IPC分类号： G03C140

    CPC分类号： G03C5/16 ,  G03C1/0051 ,  G03C1/46 ,  G03C1/832 ,  G03C5/17 ,  G03C5/26 ,  G03C2001/03541 ,  G03C2007/3025 ,  G03C2007/3027 ,  G03C2200/52 ,  Y10S430/167

    摘要： An asymmetric radiographic silver halide film has two cubic grain silver halide emulsion layers on the frontside and a tabular grain silver halide emulsion layer on the backside. The cubic grain silver halide emulsion layer closer to the support also includes a crossover control agent to reduce crossover to the backside to less than 10% and is thinner than the outermost cubic grain silver halide emulsion layer. The backside of the support also includes an antihalation layer. These films are useful for imaging soft tissue as in mammography.

    摘要翻译： 不对称放射线卤化银膜在前侧具有两个立方晶粒卤化银乳剂层，背面具有片状粒状卤化银乳剂层。 更靠近载体的立方晶粒卤化银乳剂层还包括交叉控制剂，以减少到背面的交叉度小于10％并且比最外面的立方晶粒卤化银乳剂层薄。 支撑体的背面还包括防晕层。 这些膜对于乳腺摄影术中的软组织成像是有用的。