A Monte Carlo analysis of the lead screen impact on film radiography image formation

Sandwiching the radiography film between lead screens is a very common practice in either industrial or medical radiography. The motive behind this practice is to increase the efficiency of the energy deposition into the film. In contrast with the medical radiography, the cases brought into the attention of the industrial radiographers show a large variation and screen-film-screen combination designed for one case can not be the optimum choice for another case. In this work, lead screen impact on the image formation has been analyzed through Monte Carlo computations for a large variety of combinations. General trends that need to be taken into consideration in film-screen designs have been determined.