Abstract
Jungwon Precision Ind. Co., Ltd. has recently developed precise carbon-interspaced antiscatter grids by adopting the sawing process in order to employ them to digital radiographic (DR) systems. Twelve grid samples of strip densities ranging from 40 to 85 lines/cm at a fixed grid ratio of 5:1 and of grid ratios from 5:1 to 10:1 at a fixed strip density of 80 lines/cm were prepared and their physical characteristics were examined under a well-controlled test condition with the IEC standard fixture, in terms of the transmission of primary radiation, the transmission of scattered radiation, the transmission of total radiation, the contrast improvement factor, and the Bucky factor. We expect that these experimental results will be useful for the selection of antiscatter grids in the applications of DR imaging as well as for the improvement of grid design.
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