To improve the irradiation accuracy in hadrontherapy, a lot of studies are evaluation uncluding how to integrate MRI and PET at treatement cancer patients. These two future techniques will offer simultaneously monitoring beam during irradiation. In this study for first time, we calculated dose distribution voxel head several carbon ion energies B=1.5T using fluka MC code. Afterwards, either lon...

abstract background: accurate methods of radiation therapy dose calculation. there are different monte carlo codesfor simulation of photons, electrons and the coupled transport of electrons and photons. mcnpis a general purpose monte carlo code that can be used for electron, photon and coupledphoton-electron transport.monte carlo simulation of radiation transport is considered to be one of the ...

The electron beam from the Stanford two-mile linear accelerator is analyzed by a high quality magnetic deflection system in the beam switchyard and transported to the experimental areas. The first magnetic element in this system is a group of pulsed magnets which are used to deflect the accelerator electron beam to either transport system on a pulse-to-pulse basis and with different energy puls...

in this study, the effects of strength and direction of the magnetic field on lid-driven cavity flow in the whole range of magnetic field strength variations, which already used in practice up to present (0 to 10 tesla), are studied. the governing equations, including conservative equations of momentum, continuity and magnetic field equations were solved numerically. momentum and continuity equ...

background: field matching problems in abutting electron fields can be managed by using spoilers. objective: the aim of this study was to design a monte carlo framework for the assessment of spoiler application in abutting electron fields. methods: a siemens primus treatment head was simulated for a 5 mev electron beam using beamnrc and dosxyznrc, egsnrc user codes. validation of beam model was...

This paper is devoted to illustrate the setting up of a RFbased streak Camera (RFC). Beam deflection was accomplished by replacing the standard deflecting plates of a conventional streak camera (SC) by a RF cavity located just after the accelerating optics. The magnetic field in the cavity imparts a transverse force to incoming electrons, whose direction depends on the time at which each indivi...

An extendable x-ray multi-leaf collimator (eMLC) is investigated for collimation of electron beams on a linear accelerator. The conventional method of collimation using an electron applicator is impractical for conformal, modulated and mixed beam therapy techniques. An eMLC would allow faster, more complex treatments with potential for reduction in dose to organs-at-risk and critical structures...

Introduction: Total body irradiation (TBI) is a form of external beam radiotherapy which is used in conjunction with chemotherapy with the purpose of immunosuppression. Since the target in TBI is the whole body so a uniform dose distribution throughout the entire body during TBI is necessary. As recommended by AAPM dose variation must be within ±10% of prescription dose. A revi...