Author/Authors :
Haghparast, Mohammad Department of Medical Physics - School of Medicine - Iran University of Medical Sciences, Tehran, Iran , Afkhami Ardekani, Mahdieh Department of Radiology - Faculty of Paramedicine - Hormozgan University of Medical Sciences, Bandar-Abbas, Iran , Navaser, Mahmoud Department of Medical Physics - School of Medicine - Iran University of Medical Sciences, Tehran, Iran , Refahi, Soheila Department of Medical Physics - Faculty of Medicine - Ardabil University of Medical Sciences, Ardabil, Iran , Najafzadeh, Milad Department of Radiology - Faculty of Paramedicine - Hormozgan University of Medical Sciences, Bandar-Abbas, Iran , Ghaffari, Hamed Department of Medical Physics - School of Medicine - Iran University of Medical Sciences, Tehran, Iran , Masoumbeigi, Mahboubeh Department of Medical Physics & Biomedical Engineering - School of Medicine - Tehran University of Medical Sciences, Tehran, Iran
Abstract :
Background: Measuring background radiation (BR) is highly important from different perspectives, especially from that of human
health. This study was conducted to measure BR in the southeast of Iran.
Methods: BR was measured in Hormozgan and Sistan-Bluchestan provinces using portable Environmental Radiation Meter Type 6-
80 detector. The average value was used to calculate the absorbed dose rate and indoor annual effective dose (AED) from BR. In
addition, excess lifetime cancer risk (ELCR) was evaluated.
Results: The results showed that the maximum and minimum absorbed dose rates were 71.9 and 34.2 nGy.h-1 in Abomoosa and
Minab in Hormozgan province and 90.0 and 47.8 nGy.h-1 in Zahedan and Chabahar in Sistan-Bluchestan province, respectively. Data
indicated that these areas had a lower BR level compared with the worldwide level. The ELCR from indoor AED was larger compared
with the worldwide average of 0.29 × 10-3.
Conclusion: This study provided a reference for designing and developing specific regional surveys associated with the
measurement of natural BR in the southeast of Iran.
Keywords :
Background radiation , Environmental radiation , Absorbed dose rate , Annual effective dose
