| Autor: |
Toossi, M. T. Bahreyni, Akbari, F., Bayani, Sh., Jafari, A., Malakzadeh, M. |
| Zdroj: |
World Congress on Medical Physics & Biomedical Engineering, September 7 - 12, 2009, Munich, Germany (9783642039010); 2009, p89-92, 4p |
| Abstrakt: |
nowadays, radiography seems a necessary procedure in diagnosis and treatment of patients with dental problems. According to the ALARA Principle, dentists must take radiographs of sufficient quality at the lowest possible radiation dose to the patients. The assessment of patient dose on panoramic radiography is difficult because of dynamic nature of the imaging process and the narrow width of the x-ray beam. The present work describes an experiment undertaken using thermoluminescence dosemeters to obtain the absorbed dose in organs and sensitive tissues in head and neck region during panoramic radiography, based on patient measurement. The overall mean ESD on thyroid, right and left lens of eyes, parotid glands (right and left) and occipital region in orthopantomography were 38, negligible, negligible, 367, 319, 262μGy, respectively. The results show that there are differences between patient doses examined by different OPG systems. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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