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Abstract
The aim of the present study is to improve the efficiency of lateral scattering filters in radiographic film dosimetry at high-energy and compare it with ionization chamber (I.C.). This enables us – in South Egypt Cancer Institute, Assiut University – to use radiographic film as a dosimeter characterized by many advantages over I.C. especially in dynamic radiation fields. In the present study, open radiation fields (4×4, 10×10, 15×15 and 20×20) cm2 and wedged fields (of 15°, 30°, 45° and 60° wedge angles) are chosen. Central axis and off-axis doses measured by I.C. are considered as reference measurements for radiographic films with and without lateral scattering filters.