Diagnostic Reference Level Dose in Routine Digital Radiology Examination in Tehran

Document Type : Original article

Authors

1 MSc Medical Physics, Department of Medical Physics and Biomedical Engineering Shahid Beheshti University of Medical Sciences Faculty of MedicineTehran, Iran

2 Ph.D Biophysics, Department of Medical Physics and Biomedical Engineering Shahid Beheshti University of Medical Sciences Faculty of MedicineTehran, Iran

3 MSc Solid State Physics, Department of Physics, Faculty of Physics and Chemistry, Alzahra University, Tehran, Iran

Abstract

Introduction: According to technology development and promoting cultural and scientific development in country and digital radiology equipment, we are seeing replacing those with analog devices, therefore considering that no research has been done in this area we require to prepare DLR for digital radiology. The main purpose of this study was to investigate patient dose in common X-ray examination and to establish DRLs in digital radiography in Tehran.
Materials and Methods: The study was performed on 2135 patients in 2014-2015 years. Diagnostic reference dose level (DRL) has been studied on adult in 15 digital radiology centers in routine digital radiography examinations in Iran. The dosimetry protocol in this study was indirect method to measure Entrance Surface Air Kerma (ESAK). Finally, the third quarter determined diagnostic reference level .
Results: Based on the results of this study, national diagnostic reference levels were established: 1.3 mGy for Skull(PA), 1.17 mGy for Skull (Lat), 0.77 mGy for Cervical spine(AP), 0.85 mGy for Cervical spine(Lat), 0.63mGy for chest(PA), 1.11 mGy for chest (Lat), 2  mGy for abdomen, 2.69 mGy for lumbar spine ( AP), 4.22 mGy for lumbar spine( Lat), 1.73mGy for thoracic spine (AP) and 2.35 mGy for thoracic spine (Lat). 
Conclusion: This article has determined wide variations in radiation dose of x-ray examinations among hospitals in Iran.

Keywords

References

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Navid No
Volume 20, Issue 64
March 2018
Pages 34-43

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