Mask for viewing reduced-size radiographic film, particularly
mammography film
    1.
    发明授权
    Mask for viewing reduced-size radiographic film, particularly mammography film 失效
    用于观看尺寸较小的放射照相胶片,特别是乳房X线照相胶片的面膜

    公开(公告)号:US5818624A

    公开(公告)日:1998-10-06

    申请号:US579298

    申请日:1995-12-27

    IPC分类号: G02B27/02 G02B26/02

    CPC分类号: G02B27/024

    摘要: A radiographic film mask includes a planar sheet sized for receipt on an illuminated radiographic film examination box. The mask has two opaque sections and a transparent section. The transparent section is disposed on the sheet between the two opaque sections to form a radiographic film viewing area which has an area less than the entire area of the sheet. The sheet may include semi-transparent sections which border the viewing area and interconnect the opaque portions to provide reduced transmission of light along the marginal edges of the radiographic film.

    摘要翻译: 射线照相胶片掩模包括尺寸适于在照射的摄影胶片检查盒上接收的平面片。 面具有两个不透明部分和一个透明部分。 透明部分设置在两个不透明部分之间的片材上,以形成具有小于片材整个面积的面积的射线照相胶片观看区域。 片材可以包括半透明部分,其与观察区域相邻并且互连不透明部分,以提供沿着放射线照相胶片边缘的光的减少的透射。