Evaluation of patient radiation doses using DAP meter in diagnostic radiology procedures in Birjand, Iran
Abstract
Abstract Background The concept of diagnostic reference level (DRL) is considered a regular method to optimize radiation protection in diagnostic imaging system. The objective of implementing a reference level for dose is to produce high-quality images by applying a minimum dose of radiation based on the As Low As Reasonably Achievable (ALARA) principle. Therefore, this study aimed to evaluate the status of radiation protection in diagnostic radiology wards of educational hospitals affiliated with Birjand University of Medical Sciences. Methods This study was performed during a period of 11-months in the radiology center of the teaching hospital of Birjand University of Medical Sciences. The studied population included 477 patients who were referred to as clinically indicated x-ray radiography. In order to calculate local DRLs, dose area product (DAP) was measured by a DAP-meter (KERMAX-plus SPD, model 120–131 HS) for 11 devices at educational hospitals affiliated with Birjand University of Medical Sciences. The local DRL values was calculated as 75% of the mean DAP distribution for a specific patient trial at each center. Results DAP for Chest PA examination was gained to be in the range from 0.12 Gy.cm2 to 0.42 Gy.cm2 with an average value of 0.23 Gy.cm2 which is above the value of the reference level (0.12 Gy.cm2) for Chest PA. For Chest lateral the observed DAP was found to be in the range from 0.18 Gy.cm2 to 1.48 Gy.cm2 with an average value of 0.65 Gy.cm2 and are…
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