Introduction: Introduction: Radiation causes damage to irradiated tissues and also tissues that do not receive direct irradiation through a phenomenon called bystander effects. Melatonin as a potent antioxidant and anti-inflammatory agent is known for protection of normal tissues against ionizing irradiation. In addition, some studies have suggested that Melatonin may have some...

introduction: this study investigates to what extent the computed dose received by lung tissue in a commercially available treatment planning system (tps) for 192ir high-dose-rate breast brachytherapy is accurate in view of tissue inhomogeneities and presence of ribs. materials and methods: a ct scan of the breast was used to construct a patient-equivalent phantom in the clinical treatment plan...

this study was carried out at the razi institute during 2005-2006 with inspecting 12168 lung tissue of slaughtered sheep and goats at the ziaran abattoir. pneumonia were diagnosed in 282 cases and the affected lung tissue was collected and transferred to the bacteriology and pathology departments for isolating of pasteurella spp. and interpretation of histopathologic lesions. pasteurella multoc...

  This study was carried out at the Razi Institute during 2005-2006 with inspecting 12168 lung tissue of slaughtered sheep and goats at the Ziaran Abattoir. Pneumonia were diagnosed in 282 cases and the affected lung tissue was collected and transferred to the Bacteriology and Pathology Departments for isolating of Pasteurella spp. and interpretation of histopathologic lesions. Pasteurella mult...

chronic granulomatous disease (cgd) is a rare primary immunodeficiency disease. although the most affected patients are diagnosed in childhood, there are several reports of the disease presenting in adult patients. here we present a 40 years old man who was admitted in hospital due to respiratory symptoms and ground glass pattern in high resolution computed tomography of lung. open lung biopsy ...

a pulmonary embolus clogs the artery that provides blood supply to a part of the lung. the embolus not only prevents the exchange of oxygen and carbon dioxide but also decreases blood supply to the lung tissue itself, potentially causing the tissue to die (infarct). a 52-year-old man presented with syncope and anxiety. he had sinus tachycardia and dilated right ventricle with trabeculations. a ...