Mathematical Calculation of Patient's Fluoroscopic Entrance Dose in Extracorporeal Shock Wave Lithotripsy

Abstract

The aim of this study was to determine the radiation doses to patients during extracorporeal shock wave lithotripsy (ESWL) and compare them with the available bibliographical data. In this method localization of the renal stones is attained by the use of fluoroscopy, and thus ESWL is included among those medical practices associated with patient radiation exposure. The main parameters that which enrolled in this project are the time of exposure and x-ray techniques (mA and kv). Fifty cases were enrolled in this project. Entrance dose were calculated using mathematical equation that which relate the X-ray techniques (mA and kv)and distance from the patients to entrance dose. The results show that the entrance dose was significantly very high relative to these obtained from normal radiographic examination