[Comparison of skin absorbed dose in thyroid gland area of Planmeca and Cranex Tome panoramic machines]

The goal of health physics is to prevent the occurrence of deterministic effects and to reduce the likelihood of stochastic effects by minimizing the exposure of patients and radiation workers during radiographic examination. Regarding to panoramic radiography is the most common radiograph in the head and neck region and thyroid gland is the most sensitive area and also the extensive variety in panoramic machines, this comparative study was designed. Comparison of skin absorbed dose in thyroid gland area of planmeca and cranex tome panoramic machines. In this in vitro study a dry skull and a Pocket ion-chamber dosimeter were used. At first, panoramic examination was done in different exposure conditions for small, medium, large and child patients in planmeca machine. After every exposure, the charge of dosimeter was read and recorded. These stages were repeated for Cranex Tome Machine. Then statistical analysis was performed by sample paired test with%95 confidence. In both panoramic machines, the highest mean thyroid skin dose was detected in large size patient and in the highest level of exposure factors. The mean values of doses were recorded 0.11 mSV in planmeca machines and 0.14 mSV in Carnex Tome machine. There was the least mean absorbed dose in child programs and 0.03 mSV in planmeca machine and 0.02 mSV in Cranex Tome machine. There was no significant statistical difference between mean absorbed doses in patients with different size in two panoramic machines. There was no difference between two panoramic machines for thyroid skin dose. Child program reduced thyroid skin dose definitely in both systems

[Survey the relationship between life satisfaction and healh behaviors in elderly people referring to active retire mental centers]

Rapid increase of elderly population presents their health and maintenance in wider domains in society. Therefore life satisfaction is the most important matters that required more pay attention. There is relationship between physical and mental health and life satisfaction. Health behaviors have very important role as one of the determined desirable. To determine the relationship between life satisfaction and health behaviors in elderly individuals referring to active retire mental centers of Rasht in 2008. This was a descriptive study, which 320 members from active retire mental center of Rasht participated in this study. Data was collected by a three part questionnaire that include demographic specifications, life satisfaction and health behaviors which were gathered by interview. The data was analyzed by descriptive statistics and test such as chi-square by SPSS version 15. Findings showed that mean score of the health behaviors were 92.5 +/- 13.6 and 55.6% of members have good health behaviors. The mean score of life satisfaction was 20.1 +/- 7.3 and 46.6 of members satisfied. There were significant positive correlation between health behaviors and life satisfaction [p=0.000]. Also indicated that there were statistically significant relation between health behaviors and life satisfaction; according to age [p=0.002], education level [p=0.01], family composition [p=0.002], and occupational group [p=0.002]. There is relation between health behaviors and life satisfaction. It seems that life satisfaction can be increased by training and providing essential knowledge to elderly members and planning towards health promotion behaviors