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    • 8. 发明授权
    • Air-core grid for scattered x-ray rejection
    • 用于散射X射线抑制的空心电网
    • US5455849A
    • 1995-10-03
    • US299387
    • 1994-09-01
    • Clinton M. LoganStephen M. Lane
    • Clinton M. LoganStephen M. Lane
    • G21K1/02
    • G21K1/025
    • The invention is directed to a grid used in x-ray imaging applications to block scattered radiation while allowing the desired imaging radiation to pass through, and to process for making the grid. The grid is composed of glass containing lead oxide, and eliminates the spacer material used in prior known grids, and is therefore, an air-core grid. The glass is arranged in a pattern so that a large fraction of the area is open allowing the imaging radiation to pass through. A small pore size is used and the grid has a thickness chosen to provide high scatter rejection. For example, the grid may be produced with a 200 .mu.m pore size, 80% open area, and 4 mm thickness.
    • 本发明涉及一种用于x射线成像应用中的格栅,以阻止散射的辐射,同时允许期望的成像辐射通过,并且用于制造网格。 电网由含氧化铅的玻璃构成,消除了现有技术中使用的间隔物,因此是空心网。 玻璃布置成图案,使得大部分区域是敞开的,允许成像辐射通过。 使用小孔径,并且栅格具有选择的厚度以提供高散射抑制。 例如,栅格可以生产具有200μm孔径,80%开口面积和4mm厚度。