نتایج جستجو برای: active beam delivery system
تعداد نتایج: 2828894 فیلتر نتایج به سال:
We describe the design and use of a daily quality assurance (QA) system for proton therapy. The QA system is designed to check the overall readiness of proton therapy system consistently within certain reference tolerances by a home-made QA device (the QA device). The QA device is comprised of a commercially available QA device, rf-Daily QA 3, a home-made acrylic phantom, a set of acrylic compe...
Ocular melanoma has been treated using proton therapy at the Centre Antoine Lacassagne (CAL) since 1991, following commissioning of 65 MeV cyclotron MEDICYC and its associated beam-lines a few years earlier. The dedicated eye-line is optimized for shallow tumors sharp penumbrae provides state-of-the-art quality care. cyclotron, treatment systems, which are maintained exclusively by staff CAL, h...
There are two different ways of using SMA wires as actuators for shape control of flexible structures; which can be either embedded within the composite laminate or externally attached to the structure. Since the actuator can be placed at different offset distances from the beam, external actuators produce more bending moment and, consequently, considerable shape changes with the same magnitude...
Carbon ions/Carbon-therapy/Biologieal treatment planlRBE. Duc to the RBE variations, the carbon-ion doses (in Gy) are no longer sufficient to moniter adequately the biological effect of these radiations. Therefore, "RBE dose weighting factors" WRBE allowing for the RBE variations with energy, dose and biological system have to be introduced in the treatment plans in order to provide the physici...
Cancer is one of the main causes of death worldwide. Chemotherapy is the most common method for cancer therapy which represent non-specific side effects on normal cells and tissues and drug resistance in cancer cells. There are two main mechanisms for Multi Drug Resistance (MDR) in cancer cells including: drug efflux pump and activation of anti-apoptotic pathways. Cancer chemotherapy disadvanta...
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