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 | Volume 7, Number 1 (6-2009) |  | |
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 | Gonad, bone marrow and effective dose to the population of more than 90 towns and cities of Iran, arising from environmental gamma radiation |  |
| | Author(s): M.T. Bahreyni Toossi *, Sh. Bayani, M. Yarahmadi, A. Aghamir, A. Jomehzadeh, M. Hagh Parast and A. Tamjidi | | Medical Physics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran bahreynimt@mums.ac.ir | | Study Type: Original Research | Subject: Medical physics | | | Article abstract: | | Background: Since 1996 the assessment of
environmental gamma radiation dose in residential
areas of Iranian towns and cities has been
accomplished for 10 counties. As a practical method
and based on the results of a pilot study, in order to
attribute the final results to the whole residential area
of a town five stations were selected for every town.
The location of individual station was studied closely
to comply with recommended conditions in the
literature. Materials and Methods: RDS-110 was
employed to measure gamma dose rate for one hour.
Average annual dose rates plus conversion
coefficients were employed to estimate gonad, bone
marrow, equivalent and effective dose. Result:
Minimum and maximum annual bone marrow and
gonad dose equivalent attributed to environmental
gamma are 0.24 mSvy-1 (for both tissues) and 1.44
and 1.46 mSvy-1, respectively. Conclusion: Average
gonad and bone marrow doses for North Khorasan,
Boshehr and Hormozgan provinces were less than
the corresponding values for normal area. Iran. J.
Radiat. Res., 2009; 7 (1): 41-47 | | | Keywords: Gonad, bone marrow, effective dose, environmental, gamma radiation., | |
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