NDLI: Estudos dosimétricos utilizando um sistema 3D para controle de qualidade em radioterapia

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Estudos dosimétricos utilizando um sistema 3D para controle de qualidade em radioterapia

Content Provider	Semantic Scholar
Author	Mazer, Amanda Cristina
Copyright Year	2019
Abstract	MAZER, Amanda C. Dosimetric studies using a 3D system for Quality Assurance in radiation therapy. 2019, 108 p. Dissertation (Master’s Degree in Nuclear Technology) – Nuclear and Energy Research Institute – IPEN-CNEN/SP. São Paulo. In the last years, a modern 3D dosimetric system consisting of 1386 helically arranged diodes called ArcCHECK has been developed and marketed for quality assurance of techniques involving beam modulation in radiotherapy. The scope of this work is to contribute to dosimetric studies for quality assurance by analysing and understanding experimental measurements performed with ArcCHECK and computational simulations in MCNP code, based on Monte Carlo Method. The system responses for simple and static irradiations were observed, compared to the results of two computational models developed for simulations, as well as the interpolation method and the detection sensitivity of the system were tested. Good reproducibility, repeatability, dose and dose rate linearity and detection sensitivity were found, although some unexpected effects were observed mainly due to the representation of helical dose acquisition on a 2D distribution map. The simplest proposed computational model, as well as the algorithm developed for data interpolation, helped to understand the effects of ArcCHECK. The detailed model was validated and it can be used as a reference for different simulations in the future.
File Format	PDF HTM / HTML
DOI	10.11606/d.85.2020.tde-03022020-125621
Alternate Webpage(s)	http://www.teses.usp.br/teses/disponiveis/85/85133/tde-03022020-125621/publico/2019MazerEstudos.pdf
Alternate Webpage(s)	https://doi.org/10.11606/d.85.2020.tde-03022020-125621
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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