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Introduction: Sarcoidosis is a chronic i-nflammatory pulmonary disease with unknown etiology and variable clinical manifestations including, epithelial cell granulomas and alteration in tissue and organ functions. Materials & Methods: In this cross-sec-tional study, high-resolution computed tomography (HRCT) documents of pati-ents with proven sarcoidosis were re-evaluated. The results were analyzed using the software SPSS-11 and freq-uencies of the disease were reported as percentages and diagrams. Findings: Many typical and atypical manifestations of sarcoidosis such as bronchiectasis, lymphadenopathy, lym-ph node calcification and etc, were obs-erved at HRCT . Discussion & Conclusion: HRC may pr-ovide more advantages to identify and distinguish sarcoidosis from other mim-icking diseases. However, further inves-tigations are needed to scrutinize the matter.

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Introduction: Fatty liver can cause vascular damage due to metabolic syndrome. On the other hand, the onset of fatty liver disease is expected to lead to a change in the level of GFR or possibly the resistance of the renal artery. According to the above, we aimed to study the effect of fatty liver with or without hepatomegaly on the resistance of the renal artery by designing this study.
 
Materials & Methods: In this cross-sectional study, patients after diagnosis of fatty liver by ultrasound (hyper echogenic hepatomegaly with dorsal hypo echogenicity) and elevated liver enzymes enrolled the study. Also, as patients in the case group, healthy subjects with no liver problems that were matched for age and sex were included. Subsequently, patients were asked about demographic information and anthropometric information, and then the patients underwent sonography of B mode and Doppler. Renal length, kidney thickness, liver size and spleen size were also calculated by abdominal sonography. In this study, the renal artery resistance index was obtained based on the formula RI= [VmaxSystole-VminDiastole]/Vmax-Systole. All patients' information was entered into SPSS software and analyzed. Ethics code: IR.TBZMED.REC.1396.906
 
Findings: In this study,The mean age of all participants in the study was 42±11 years. Right kidney RI was 0.61±0.05 in the fatty liver group and 0.59±0.11 in the normal group (P=0.155). The RI value of the left kidney was 0.62±0.05 in the fatty liver group and 0.59±0.0.03 in the healthy subjects group. This difference was not statistically significant (P=0.389). Correlation coefficient between age and right renal RI was 0.249 (P=0.027) and this factor between age and left kidney RI was 0.325 (P=0.003). Both relationships were statistically significant.
 
Discussion & Conclusions: There is no meaningful relationship between renal RI and fatty liver, and the use of renal RI in early diagnosis of kidney disease in patients with fatty liver is not beneficial.
 

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Introduction: The results of studies on the biological effects of ionizing radiation can play an important role in reducing the risk of occupational hazards of personnel working at the radiological departments of the hospital. This study aimed to investigate the concentration of aluminum, manganese, and selenium in the blood serum of operating room staff and their association with occupational radiation exposure.
 
Materials & Methods: In total, 100 healthy operating room staff was selected using systematic random sampling. They were then divided into three groups of radiation workers, non-radiation worker, and test (those who were exposed to X-rays but did not wear film badges). Subsequently, two milliliters of peripheral blood were taken intravenously from volunteers and centrifuged to separate serum. The concentration of three elements was read by the graphite furnace atomic absorption spectroscopy. The analysis of variance was used to analyze the concentration of aluminum, manganese, and selenium in all groups. Moreover, the fitting curve of the occupational exposure was described using the R software. Ethics code: ir.kums.rec.1397.467
  
Findings: The normality of the data was assessed and confirmed by the Kolmogorov-Smirnov test. Moreover, the concentration values (ng/ml) of aluminum, manganese, and selenium were 8.62, 9.08, and 76.15, as well as 13.53, 12.14, and 140.97 in the non- and radiation worker groups, respectively. The difference between the two groups was significant for all three elements (P<0.001). Furthermore, the corresponding values for aluminum, manganese, and selenium were 9.54, 8.76, and 105 in the test group.
 
Discussions & Conclusions: Occupational radiation can increase the concentration of manganese, aluminum, and selenium in the blood serum. These results suggest the necessity for more investigations on operating room personnel who do not wear film-badges.

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