en Radiation Biology Radiation Biology مطالعه موردي Case Report <div style="text-align: justify;">ABSTRACT<br> Background: Ultraviolet radiation is present in sunlight. If ultraviolet radiation exceeds the limit, it can cause detrimental effects on human health such as skin cancer and cataract. Materials and Methods: In this descriptive cross-sectional study, the level of solar ultraviolet radiation type A (UVA) were measured using UV LOG HAND HELD in Kermanshah city. The intensity of ultraviolet radiation was measured three times a day including two hours before noon, noon and two o&#39;clock in the afternoon. The results were analyzed using ANOVA statistical tests with a confidence interval of 95%. Results: The lowest and highest average intensity levels of solar UVA in Kermanshah were in December (14.21&plusmn; 0.94 w/m2) and August (32.87 &plusmn;2.3 w/m2), respectively. Also, winter and summer seasons (with average intensities of 16.37&plusmn; 1.12 w/m2 and 30.12&plusmn;1.7 w/m2) had the lowest and highest intensity of this radiation, respectively. Conclusion: Regarding that UVA radiation exceeds the safe exposure level, even in the winter in Kermanshah, it is recommended for people to avoid from long-term staying in open spaces at noon and use proper protective wears especially in summer.</div> Solar radiation, ultraviolet radiation, Kermanshah. 419 423 http://ijrr.com/browse.php?a_code=A-10-1-695&slc_lang=en&sid=1 M. Rezaei 7900319475328460015573 7900319475328460015573 No Student Research Committee, Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran K. Khoshgard khoshgardk@gmail.com 7900319475328460015574 7900319475328460015574 Yes Department of Medical Physics and Biomedical Engineering, Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran H. Mafakheri 7900319475328460015575 7900319475328460015575 No Student Research Committee, Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran M. Kanaani 7900319475328460015576 7900319475328460015576 No Student Research Committee, Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran