Introduction Accurate estimation of the skin-absorbed dose in external radiation therapy is essential to estimating the probability of secondary carcinogenesis induction Materials and Methods Electron contamination in prostate radiotherapy was investigated using the Monte Carlo (MC) code calculation. In addition, field size dependence of the skin dose was assessed. Excess cancer risk induced by...

Central axis depth dose measurements were made by the Radiological Physics Center on over 70 electron-producing machines used in radiation therapy. These data were consistent for each machine model and nominal energy. However, the data show that depth dose relations can vary significantly among different machine models for electron beams having the same nominal energy. Analysis shows that both ...

Therapy for large symptomatic keloids is often plagued with complicated reconstruction manner and recurrence. This article reports a rare treatment combination for a chest keloid with internal mammary artery perforator flap reconstruction and radiation therapy. We excised the keloid and covered the defect with an internal mammary artery perforator flap. Immediate electron-beam irradiation thera...

Background: Exposure to ionizing radiation is known to induce oxidative stress followed by damage to critical biomolecules like lipids, proteins and DNA through radiolysis of cellular water. Since radiation has been widely used as an important tool in therapy of cancer, the detailed investigation regarding the DNA damage and repair kinetics would help to predict the radiation sensitivity of cel...

Presternal butterfly keloid management remains a clinical challenge. This case indicates, with hypo fractionated external beam electron therapy a significant symptomatic and cosmetic benefit may be achieved without any unacceptable acute, chronic or long term toxicity.

occupational therapy in iran is relatively young-established in 1971-with a fluctuated development due to the iranian revolution in 1979, and eight years war from 1981 to 1989. today, there are ten bachelor programs across the country approved by world federation of occupational therapists (wfot). furthermore, occupational therapists have opportunities for further postgraduate training in both ...

background & aim: although cold and heat have been recommended for labor pain relief, comparison of them and intermittent change in cold and heat therapy has been less considered. this study compared the effects of separate and intermittent heat and cold on labor pain relief and some birth outcomes . methods & materials : this was a randomized clinical trial. ninety-six parturient women were ra...

Abstract— Full-3D particle-in-cell Monte Carlo simulation of a new scheme electron radiotherapy based on acceleration by high-power femtosecond laser pulse propagating in plasma sub-critical density the relativistic self-trapping regime (V. Yu. Bychenkov et al., Plasma Phys. Control. Fusion 61 , 124004 (2019)) was carried out. Based results distribution energy deposited bunches accelerated such...

statement of the problem: root canal therapy should not simply be the extirpation of the pulp and widening of the canal. but one should also focus on how to completely remove the loosely-attached smear layer because it has adverse effects on the final outcome of the treatment. purpose: this study compared the efficacy of etidronic acid, smearclear and mtad to remove the smear layer created duri...