The Effects of Different Exposure Factors on Leakage Radiation in an X-ray Room

Abstract

This study evaluated leakage radiation doses inside an x-ray room at patient’s positioning levels. The effects of different exposure settings (X-ray tube voltage, radiation exposure intensity, dosimeter position, and distance from X-ray tube) on leakage radiation dose are estimated. Various x-ray tubes and models were used in this evaluation. The findings of this study revealed that, the increase of tube voltage (kVp), and tube current (mAs) led to a concomitant increase in the quantity of leakage radiation, whereas the increase in distance from X-ray tube and dosimeter position reduces the intensity of recorded leakage radiation according to inverse square low. In addition, the evaluation of leakage X-ray for investigated X-ray units illustrated that, leakage radiation doses at patient level around X-ray tubes were within the permissible occupational dose. Finally, the reduction of leakage radiation dose can be acquired by reducing the intensity of radiation (mAs) and increasing the distance between imaged object and x-ray source.