Optimization of Radiation Dose for Patient in Chest Conventional Radiography

Abstract

x-rays are one of the largest artificial source of public exposure to ionizing radiation. Therefore, it is very important to use a minimum radiation dose avoiding access amount of radiation than that needed for the procedure. So that recently the concern about cancer risks associated with medical radiation has took place and increasing year by year. The objectives of this study are to: Measure and optimize the radiation dose to patient in chest x-ray examination by conventional tube in four hospitals in Khartoum state, Estimate the Entrance Surface Dose (ESD) and evaluate the radiation risks. So that the total number of patients examined are 65(36males and 29 females) The results were compared with previous studies and the results of this dose survey provide valuable primary data for concerning by the reduction of patient dose program. The variations of patient dose for the same types of x-ray examination carried out even by different radiographers suggested that significant reductions in the dose from these spread is mainly due to the choice of exposure factors, technique, , filter and the output of the x-ray units and processor quality were used. The findings support the importance of the on-going quality assurance program to ensure doses are kept to a level consistence with optimum imaging quality.