Diagnostic reference levels (DRLs) for routine X-ray examinations in Lorestan province, Iran

M Gholami, A Maziar, H Khosravi, F Ebrahimzadeh, S Mayahi, Mehrdad Gholami
2015 International Journal of Radiation Research   unpublished
In diagnosc radiology there are two reasons for measuring or esmang radiaon doses to paents. Firstly measurements provide a means for seng and checking standards of good pracce as an aid to the opmizaon of paent protecon. Secondly esmates of the absorbed dose to ssue and organs in the paents. Materials and Methods: A total of 2382 paents were studied to calculate the Entrance Surface Air Kerma (ESAK) following seven radiographic examinaons including: chest (PA, Lat), lumbar spines (AP, Lat),
more » ... vis (AP), abdomen (AP), skull (PA, Lat), thoracic spine (AP, Lat) and cervical spines (AP, Lat). The ESAKs values were measured according to x-ray tube output, opmized exposure parameters and body thickness (t p) for each technique. Results: The parameters such as, 1 st quarle, mean, median, 3 rd quarle, minimum, maximum and standard deviaon of each ESAK values are reported and compared to NRPB guide levels. The results showed that the ESAK s values in the lumbar spines and chest X-ray examinaons were 30% above the guide levels. However, for the pelvis (AP), skull (PA) and abdomen (AP) examinaons, these values were below than those reported by the NRPB. Conclusion: Periodic quality control and monitoring the technical performance of radiographers might effecvely improve the image quality and eventually reducing the dose received by paents.