background: in vivo dosimetry is a method for estimation of overall error in the delivered dose to the patients at the end of radiotherapy process. in this research, two methods for target dose calculation were evaluated on midline and central axis of photon beams in in vivo dosimetry of thorax fields. materials and methods: entrance and exit doses for anterior and lateral fields of thorax were...

introduction: esophageal cancer is one of the most frequently occurring cancers in iran and having a  high  incidence  rate  among  other  countries.  radiotherapy  is  one  of  the  three  methods  (surgery,  radiotherapy and chemotherapy) for radical or palliative treatment of esophageal cancer. in this method  of treatment, the organs such as heart and spinal cord are regarded as organs at r...

background: changes in body composition may be used for monitoring progression/ regression of a disease. prompt γ-rays in vivo neutron activation analysis (ivnaa) has been widely used for the measurement of body composition in recent years. objective: in this paper, we tried to improve the safety of ivnaa operator. methods: the most important factor for reducing the operator receiving dose is t...

visceral leishmaniasis (vl) is usually treated with pentavalent antimonial drugs given alone or in combination with other drugs. the efficacy of these treatments is diminishing, however, and development of alternative treatments has been recommended.we studied 13 patients with leishmaniasis who were unresponsive to meglumine antimonate, at a dose of 20 mg/kg body weight/per day given for 30 day...

background: osteonecrosis (on) is known to be one of the most disabling complications following corticosteroid (cs) medications. however, evidence regarding risk of asymptomatic prevalence of on among different diseases and the impact of variable steroid regimens are conflicting. we aimed to determine the prevalence of on of femoral head in asymptomatic patients with systemic rheumatic diseases...

Background: Many cardiovascular diseases may require lifelong anticoagulation therapy. Warfarin is the most prescribed medication in this regard, however, it has serious side effects. Recently the new issue regarding to warfarin dosing is considered in which some single nucleotide polymorphisms (SNPs) affecting cytochrome P450 system can impact on warfarin metabolism and dosing. Methods: 230 c...