Purpose Pediatric patient are known to have higher sensitivity to exposure to radiation. Therefore monitoring of radiation doses received by neonatal patients in our hospital is of primary importance element of our patient safety program in diagnostic radiology. We are proposing to measure the entrance surface dose (ESD) using OSL dosimeters due to their higher sensitivity and fast analysis in comparison with TLD both used for occupational dose monitoring at our institution. Methods and materials Entrance surface dose was measured using the IAEA TRS-457 dosimetry protocol. Measured entrance surface dose using neonatal phantom and OSL dosimeters. The X-ray beam is the one produced by a portable X-ray machine routinely used in the hospital in ICU set up. We have used a neonatal body phantom (Model: 610 GAMMAX) to simulate the patient body. Both OSL and TLD readings were cross checked using a diagnostic X-ray shadow free PTW ionization chamber model: SFD34060 coupled to an electrometer model: UNIDOS E, linear calibration curves were obtained for the OSL and TLD. Results The average measured ESD using the OSL and the TLD were 66 and 70 μGy respectively. The OSL were found suitable to conduct ESD measurements during chest X-ray exam for the neonatal patient. The obtained patient dose measurement will serve as an indicator of quality and patient safety standard in diagnostic radiology services. Conclusion The measured values are within internationally published data. The study serves as a benchmark to our clinical practice against international diagnostic reference levels (DRL) in pediatric radiology.
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