Radiochromic films are mainly used for two-dimensional dose verification in photon, electron, and proton therapy treatments. Moreover, the radiochromic film types available today allow their use a wide range, corresponding to applications from low-medical diagnostics high-dose beam profile measurements charged particle medical accelerators. An in-depth knowledge of characteristics films, operat...

Introduction: According to the American Society of Radiation Oncology, all patients receive radiation therapy during their illness, where radiation is delivered by the medical linear accelerator (Linac). The aim of this study was to evaluate the quality assurance (QA) of the Linac in analyzing the used dose profile in the treatment of cancer tumors. Materi...

background: high level radiation areas have been recognized on various parts of the earth. mahallat hot spring region is one of these areas. study of exposure in these areas can be helpful in investigating the effects of ionizing radiation. internal and external exposure to the staff was studied. materials and methods: used materials and instruments include: rss-112 ionizing chamber for environ...

abstract introduction:  this study was performed to compare the effects of low-dose interferon beta-1(cinnovex,30 mcg) and high-dose interferon beta-1(rebif,44 mcg) on the reduction of the number and size of plaques in magnetic resonance imaging (mri) in patients with multiple sclerosis (ms). methods and materials: this historical cohort study, which was performed in 2014 in sanandaj (western p...

Objective: Febuxostat, a xanthine oxidoreductase inhibitor, is a drug of choice for hyperuricemia and Gout. But it also suffers from drawbacks in terms of pharmacokinetic profile and toxicity. It is available as immediate release formulation in the market. The objective is to develop a modified release formulation of febuxostat that can serve the dual purpose of increasing the efficacy and decr...

background: studies demonstrated controversial results on subclinical hypothyroidism (sch) regarding lipid profile alteration with or without levothyroxine treatment. the purpose of this study is to investigate the effects of levothyroxine on serum lipids in sch. materials and methods: one hundred patients with sch referred to taleghani hospital in kermanshah were recruited and randomly assigne...

Computed tomography (CT) dosimetry normally uses an ionization chamber 100 mm long to estimate the computed tomography dose index (CTDI), however some reports have already indicated that small devices could replace the long ion chamber to improve quality assurance procedures in CT dosimetry. This paper presents a novel dosimetry system based in a commercial phototransistor evaluated for CT dosi...