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NTEC Specialist No 15B, off Shehu Sanda Kyari Crescent Old GRA Maiduguri Email: [email protected]
Abstract
Objective: The entrance surface doses (ESD) to adult patients undergoing postero-anterior (PA) chest radiography were measured at Shika Ahmedu Bello University Teaching Hospital (ABUTH) Zaria, Northern Nigeria. Method:A total of 30 patients were prospectively considered in the study. The ESDs were obtained using thermo luminescence dosimeter (TLDs) chips, and Kumar's formula. Results: The estimated ESD obtained were 1.08 mGy and 0.76 mGy for TLD chips readings and Kumar's formula respectively. Comparison was made between the two readings, and a statistically significant difference was noted (p<0.029). Conclusion: Procedural changes are suggested in order to lower the ESD and enhance the image quality of the radiographs. ESDs in this study were found to be generally higher compared with those reported in similar studies in Southern Nigeria, UK, and CEC. The results call for improved operators technique and application of quality Assurance Programme (QAP) in radiology departments, to ensure that doses are kept as low as reasonably achievable, and also for the formulation of local diagnostic reference levels (LDRL)
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