Improved electron collimation system design for Elekta linear accelerators
نویسندگان
چکیده
منابع مشابه
Improved electron collimation system design for Elekta linear accelerators
Prototype 10 × 10 and 20 × 20-cm2 electron collimators were designed for the Elekta Infinity accelerator (MLCi2 treatment head), with the goal of reducing the trimmer weight of excessively heavy current applicators while maintaining acceptable beam flatness (±3% major axes, ±4% diagonals) and IEC leakage dose. Prototype applicators were designed initially using tungsten trimmers of constant thi...
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This study provided baseline data required for a greater project, whose objective was to design a new Elekta electron collimation system having significantly lighter electron applicators with equally low out-of field leakage dose. Specifically, off-axis dose profiles for the electron collimation system of our uniquely configured Elekta Infinity accelerator with the MLCi2 treatment head were mea...
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Out-of-field doses from radiotherapy can cause harmful side effects or eventually lead to secondary cancers. Scattered doses outside the applicator field, neutron source strength values, and neutron dose equivalents have not been broadly investigated for high-energy electron beams. To better understand the extent of these exposures, we measured out-of-field dose characteristics of electron appl...
متن کاملNew Applications for Linear Electron Accelerators*
Electron linacs in the 100 MeV to 25 GeV energy range have by now been in operation for periods ranging from one year to over 20 years. In 1951 the Mark III accelerator at Stanford became the first electron linac to exceed an energy of 100 MeV. Since then significant increases in maximum electron energy have been made by the h'Iark III (reaching an energy of 1 GeV in 1960) and SLAC (exceeding 2...
متن کاملSmall field detector correction factors: effects of the flattening filter for Elekta and Varian linear accelerators
Flattening filter-free (FFF) beams are becoming the preferred beam type for stereotactic radiosurgery (SRS) and stereotactic ablative radiation therapy (SABR), as they enable an increase in dose rate and a decrease in treatment time. This work assesses the effects of the flattening filter on small field output factors for 6 MV beams generated by both Elekta and Varian linear accelerators, and d...
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ژورنال
عنوان ژورنال: Journal of Applied Clinical Medical Physics
سال: 2017
ISSN: 1526-9914,1526-9914
DOI: 10.1002/acm2.12155