introduction: the aim of this study was to eva-luate the salivation flow rate objectively using schirmer test and mouth dryness and other con sequences subjectively by distributing question naires to patients receiving head and neck radio therapy. materials and methods: in this descriptive study that was carried out at imam khomeini hospital, tehran, iran, the saliva flow rate of 33 patients re...

background depending on the cause, 40-90% of every deep dermis insult ends up in scar formation. several modalities have been suggested as a treatment but a high rate of recurrence is reported in most of those interventions. high dose radiotherapy has been shown to be effective in reducing the recurrence rate. this study tried to determine the effectiveness of low dose rate radiotherapy followi...

breast cancer is the most common cancer in women after skin cancer. in iran, the presentation age of this cancer is younger than the global average. there are different therapeutic methods for treatment of breast cancer and the choice of treatment depends on the stage of the disease as well as its type and characteristics. therapeutic methods include surgery, radiotherapy, and systemic therapie...

normal skin is composed of epidermis and dermis. skin is susceptible to radiation damage because it is a continuously renewing organ containing rapidly proliferating mature cells. radiation burn is a damage to the skin or other biological tissues caused by exposure to radiofrequency energy or ionizing radiation. acute skin reaction is the most frequently occurring side effect of radiation thera...

Background: Salivary glands (SGs) are usually irradiated during radiotherapy for head and neck cancers, which may lead to radiation-induced changes. These changes could be evaluated safely by ultrasonography; however, there have been few studies in this regard. Thus, we aimed to investigate the changes in post-radiotherapy submandibular glands using ultrasonography in patients undergoing head-n...

background: in treating patients with radiation, the degree of accuracy for the delivery of tumor dose is recommended to be within ± 5% by icru in report 24. the experimental studies have shown that the presence of low-density inhomogeneity in areas such as the lung can lead to a greater than 30% change in the water dose data. therefore, inhomogeneity corrections should be used in treatment pla...

background : tongue cancer is one of the most common cancers of the oral cavity, excluding lip, and the median age of the patients is approximately 60 years. methods : treatment results of a total of 110 patients with oral tongue cancer admitted to cancer institute of tehran university between1999-2003 were retrospectively analyzed. the patients were treated by surgery or radiotherapy or chemot...

introcduction: pigmented villonodular synovitis (pvs) is rare, benign and proliferative disorder of synovium which consists of villous and/ or nodular formations in joints.diagnosis is determined by clinical features, aspiration of the joint, radiographic features and magnetic resonance imaging (mri).the definitive treatment is the complete resection of affected tissue by open or arthroscopic s...