ABSTRACT
Aim: The purpose of this study is to measure radiation leakage of Siemens Primus Plus and Siemens Artiste linear accelerators in electron mode and to compare the leakage level with that recommended by the International Electrotechnical Commission (IEC) standard. Materials and Methods: In this assessment, Siemens Primus Plus linear accelerator with 10 cm × 10 cm, 15 cm × 15 cm, and 25 cm × 25 cm applicators was used. The radiation leakage in lateral and vertical directions was measured for Siemens Primus Plus and Siemens Artiste linear accelerators. Results: Data derived from radiation leakage measurement for Siemens Primus Plus and Siemens Artiste linear accelerators in lateral direction from the field edge and in vertical direction from the applicator were reported. The radiation leakage data were then compared with the IEC standard to evaluate in-air field leakage. Conclusion: Comparing the radiation leakage level from fields with the IEC standard for two applicators, the maximum that was occurred for 12 MeV electron beam and applicator size of 10 cm × 10 cm in Siemens Artiste linear accelerator was 2.3%, which is less than the IEC's recommended limit of 10%. It is concluded that the leakage amount is much less than the specified limit and that both of the linear accelerators have high level of safety. Considering the measurement stage, it also needs to be noted that the beam angle affected the radiation leakage level from field edge, and in 25° angle, it is higher than in 0° angle. Comparing radiation leakage from the right side of the field for the two linear accelerators, the amount of leakage for Siemens Primus Plus linear accelerator is more than Siemens Artiste linear accelerator
ABSTRACT
Introduction and Aims: From World Health Organization's point of view, health is well-being in terms of physical, social and mental not merely the absence of disease. Public health is the very important factor in the industries if neglecting, its effects on both individuals and organization would be irreparable
This study aimed to assess the general health condition and its effective factors in an industry staff
Methods: This was across sectional study and all employees in this industry were recurred or collected by census [n= 110]. The demographic questionnaire and the General Health Questionnaire [GHQ] was used for data collection. Data analysis was performed by using SPSS software [Ver.20] and the independent t-tests, ANOVA and Spearman correlation coefficient test
Results: Based on the results, the average score for general health in sub-groups of physical disorders was 6.06+/-2.78, anxiety was 4.01+/-2.64, social disorder was 11.97+/-3.98 and depression was 3.30 +/-3.74. In these sub-groups 67.3%, 82.7%, 7.3% and 85.5% of the subjects were in healthy group. There was no statistically significant difference between the variables of age and work history, and score of public health sub-groups whereas there was a statistically significant difference between the total score of general health and education
Conclusion: Factors such as education can be named as effective factor on the general health condition of employees in this industry. In the present study, a very small percentage of individuals in social disorder sub-groups, were normal. Therefore, by conducting survey and focus in this area and executive decisions positively, we can contribute to increase general health condition