Portal radiographic imaging
    1.
    发明授权
    Portal radiographic imaging 失效
    门静脉造影成像

    公开(公告)号:US5871892A

    公开(公告)日:1999-02-16

    申请号:US787035

    申请日:1997-01-28

    摘要: Radiographic elements useful for therapy imaging are disclosed each comprised of a film support having first and second major surfaces and capable of transmitting radiation to which the radiographic element is responsive and, coated on both of the major surfaces, processing solution permeable hydrophilic colloid layers which are fully forehardened and limited to less than 45 mg/dm.sup.2 of hydrophilic colloid to facilitate processing in less than 45 seconds, at least one of said layers on each major surface including light-sensitive silver halide grains capable of providing a contrast in the range of from 4 to 8 and containing less than 3 mole percent iodide, based on silver, the hydrophilic colloid layers allowing at least 30 percent crossover within a spectral region within which the silver halide grains are light-sensitive. The radiographic elements are useful for either in localization or verification imaging.

    摘要翻译: 公开了用于治疗成像的射线照相元件,每个包括具有第一和第二主表面的膜支架,并且能够传播放射线照相元件响应的辐射,并且在两个主表面上涂覆可渗透的亲水胶体层, 完全预硬化并限于少于45mg / dm 2的亲水胶体,以促进在少于45秒钟内的加工,每个主表面上的至少一个所述层包括能够提供对比度的光敏卤化银颗粒 4至8并且含有基于银的少于3摩尔%的碘化物,所述亲水胶体层允许卤化银颗粒在光敏区域内至少30%的交叉。 射线照相元件可用于定位或验证成像。