A lenticular film system designed to suppress image degrading crossover during dual screen radiographic exposure is proposed and evaluated. The lenticular screen consists of two sheets of crossed cylindrical lenslets each with a frequency of 25 lenslets/mm. A numerical analysis via optical ray tracing compares the theoretical frequency response of the proposed system to that of a conventional radiographic film. It shows an enhancement in the response by a factor of two, for frequencies 1-4 c/mm. Experimental measurements made on simulations of the proposed system using Kodak film type, SO-241 confirm the predicted improvement in the mid-frequency range. The proposed lenticular system reduces the need to absorb crossover illumination with a tinted film base by imaging crossover illumination with lenslets molded into the film base. By using the crossover illumination as part of the image forming exposure, a reduced radiation dose is required to obtain comparable or improved image quality.
Library of Congress Subject Headings
Photography--Films; Radiography, Medical; Medical photography
Department, Program, or Center
School of Photographic Arts and Sciences (CIAS)
Butler, Elizabeth A., "Evaluation of the image quality of an experimental lenticular film system for radiographic applications" (1982). Thesis. Rochester Institute of Technology. Accessed from
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