نتایج جستجو برای: application radiotherapy dosimetry
تعداد نتایج: 830352 فیلتر نتایج به سال:
Many new X-Ray treatment machines using small and/or non-standard radiation fields, e.g., Tomotherapy, Cyber-knife, and linear accelerators equipped with high-resolution multi-leaf collimators on-board imaging system, have been introduced in the radiotherapy clinical routine within last few years. The introduction of these modalities has led to development high conformal techniques like Intensi...
Abstract Introduction: The doping of high Z nanoparticles into the tumor tissue increases therapeutic efficiency radiotherapy called nanoparticle enhanced (NERT). In present study, we are identifying effective types radiation and concentration bismuth radiosensitizer for NERT application by analyzing atomic number (Zeff) photon buildup factor (PBF) (Bi) doped soft photon, electron, proton, alph...
PURPOSE We recently developed a novel, open-source in vivo dosimetry that uses the electronic portal imaging device to detect dose delivery discrepancies. We applied our method on patients with rectal cancer treated on a belly board device. METHODS In vivo dosimetry was performed on 10 patients with rectal cancer treated prone on the belly board with a 4-field box arrangement. Portal images w...
In-vivo dosimetry techniques are currently being applied only by a few Centers because they require time-consuming implementation measurements, and workload for detector positioning and data analysis. The transit in-vivo dosimetry performed by the electronic portal imaging device (EPID) avoids the problem of solid-state detector positioning on the patient. Moreover, the dosimetric characterizat...
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