Prospective Study Of Variation Of Entrance Surface Dose In Conventional And Digital Radiography In Pediatric Age Group

BackgroundrnRadiation exposure at the early stage of life usually results in a likelihood of two or three fold increase inrnlifetime risk for certain detrimental effects compared with that of adult. Radiation protection in pediatricrnradiology requires special attention because children are more sensitive to radiation and at higher riskrnthan adults. The objective of this study is to assess variation of ESD in conventional and digitalrnradiography in pediatrics age group of some hospitals in Addis Ababa, Ethiopia.rnMethodrnProspective cross sectional study was conducted using convenience sampling; data were collected,rnchecked for clarity and completeness and entered into SPSS version 23 for analysis. The data werernanalyzedrnResultrn rnstatistically, and compared with the international referencern rndose values. rnOut of 620 study participants 309 (49.8%) were exposed to conventional radiograph while 311 (50.2)rnwere exposed to digital radiograph. Calculation of ESD shows that mean ESD of conventional radiographrnto be 1.13, while that of digital radiograph is 1.84. The third quartile of Conventional is 1.72 and that ofrndigital radiography is 0.92. In age group 5-15 digital radiography ESD’s are greater than conventionalrnESD’s, while in those less than 5 years conventional radiography ESD’s are higher than that of digitalrnESD’s. In abdomen, extremities, pelvis and spine digital radiograph ESD’s are higher than conventionalrnones but in CXR and skull those of conventional ones are higher than digital radiograph ESDs.rnConclusionrnAccording to this study, radiation dose (mean ESD) is relatively higher in conventional radiography inrnchest x ray and skull when compared to Digital Radiography whereas in abdomen, extrimities, pelvis andrnspine digital radiography mean ESDs are higher than conventional radiography mean ESDs

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