objective: the aim of this study is to evaluate the effect of tissue composition on dose distribution in electron beam radiotherapy. methods : a siemens primus linear accelerator and a phantom were simulated using mcnpx monte carlo code. in a homogeneous cylindrical phantom, six types of soft tissue and three types of tissue-equivalent materials were investigated. the tissues included muscle (s...

conclusions the outcome of this study is that the oca has no toxic effect on h9c2 cells. results the results showed that the percentage of survived cells amount of extract dilution ratio (1:4; 1:2; 1) were 80.4%; 79.6%, 77.5% respectively. analysis of statistical test results does not show any significant differences between the optical density of the extract dilutions, and the control group in...

background:   although the majority of soft tissue masses are benign, it is important to consider malignancy in differential diagnoses. because most soft tissue sarcomas present as a painless mass, clinicians must watch for signs suggestive of malignancy, including large size, rapid growth, and site deep into the deep fascia.the purpose of this study was to determine the relative prevalence acc...

metabolic syndrome is a chronic low-grade inflammation condition which is associated with central obesity, dyslipidemia, insulin resistance and hypertension. inflammation in metabolic syndrome is not only associated with elevated serum inflammatory markers, such as c-reactive protein (crp), but also, is associated with low-grade inflammation in adipose tissue and releasing of adipokines. higher...

introduction: diode laser with wavelengths ranging from 810 to 980 nm in a continuous or pulsed mode was used as a possible instrument for soft tissue surgery in the oral cavity. discussion: diode laser is one of laser systems in which photons are produced by electric current with wavelengths of 810, 940 and 980nm. the application of diode laser in soft tissue oral surgery has been evaluated fr...

background neck reconstruction is considered as one of the most important surgeries in cosmetic and reconstructive surgery. the present study aimed to assess the results of reconstructive surgery of extensive face and neck burning scars using tissue expanders. methods this descriptive prospective study was conducted on 36 patients with extensive burning scars on the neck and face. operation for...

objective: the aim of this study was to evaluate the effect of sucrose on follicular survival rate and the incidence of apoptosis in rat ovarian tissue following vitrification. methods: ovaries of approximately 5-week-old female wistar rats were divided randomly into three groups: control (non-vitrified), vi (ethylene glycol + dimethyl sulfoxide) and vii (eg + dmso + 0.25 mol/lit sucrose). vit...