Introduction: Collimating the primary beam to the area of diagnostic interest (ADI) has been strongly recommended as an effective method to reduce patient’s radiation dose and to improve image quality during radiology practice. Lack or inadequate collimation results in excessive radiation dose to patients and deterioration image quality.Objective: To assess the quality of beam collimation dur...

Background: Lichen planus has various clinical and epidemiologic features in different countries. Objectives: To determine clinical and epidemiologic patterns of lichen planus in dermatology department of Hamadan Sina Hospital during a ten-year period. Patients and Methods: This retrospective descriptive study was performed on 363 patients (Including 190 females and 173 males) suffered fr...

conclusions the rvr is the strongest factor of svr and infection with hcv genotype 2 is significantly associated with rvr. neither biochemical and/or metabolic factors seem to exert influence on rvr. objectives the main aim of this study was to assess the strength of rvr, as a predictive factor of antiviral treatment response. patients and methods using univariate and multivariate analysis, we ...

background: gestational trophoblastic disease (gtd) defines a heterogenenous group of interrelated lesions that arise from the trophoblastic epithelium of the placenta. there are several histologically distinct types of gtd: hydatiform mole (complete or partial), persistant/invasive gestational trophoblastic neoplasia (gtn), choriocarcinoma and placenta site trophoblastic tumors. the aim of thi...

background: status epilepticus (se) is one of the most common neurological emergencies with high mortality and morbidity. this study aims to determine the most common causes and outcomes of se in adult patients from fars province in southern iran. materials and methods: 134 patients with se (either convulsive or non-convulsive), admitted to namazi hospital, were enrolled from january 2006 to fe...

aim : the aim of this study was to report the anatomical location and histologic type of colorectal polyps in a large series of iranian patients that attended for colonoscopy. background : polyps that develop through the adenoma-carcinoma pathway are considered neoplastic and may eventually progress to invasive carcinomas. in addition polyps can develop with no neoplastic potential. these neopl...