Abstract
The Barium Meal Procedure (BMP) is a fluoroscopy examination widely performed in pediatric patients to diagnose, mainly, gastroesophageal reflux disease (very common in children). However, radiation dose levels due to this procedure are a great concern because children are more radiosensitive and have more life expectancy than adults. In order to verify these levels, dosimetric measurements, in the surface and in internal organs, can be done using a parallel-plate ionization chamber (to determine the kerma-area product – PKA) and using anthropomorphic phantoms and appropriated detectors (such as OSL – optically stimulated luminescence detector – and TL – thermoluminescent detector), respectively. Based on this, the aim of this study was to determine the PKA and organ doses in a pediatric BMP, using an anthropomorphic phantom and OSL (BeO) and TL (LiF:Mg,Ti) detectors. The results of doses obtained by the OSL and the TL detectors showed an expected discrepancy since the dosimeters materials are not placed in the same position in phantom. However, the order of magnitude of these results is similar to the results available in the literature. Keywords: fluoroscopy; absorbed dose; kerma-area product; thermoluminescent detector; optically stimulated luminescence detector.
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