PAULO DE TARSO DALLEDONE SIQUEIRA
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Artigo IPEN-doc 20609 Brachytherapyu dose measurements in heterogeneous tissues2014 - FONSECA, GABRIEL P.; LUVIZOTTO, JESSICA; COELHO, TALITA S.; ANTUNES, PAULA C.G.; RUBO, RODRIGO; SIQUEIRA, PAULO de T.D.; YORIYAZ, HELIOArtigo IPEN-doc 16905 Construction tool and suitability of voxel phanton for skin dosimetry2011 - ANTUNES, PAULA C.G.; SIQUEIRA, PAULO T.D.; FONSECA, GABRIEL P.; YORIYAZ, HELIOArtigo IPEN-doc 16850 Study of discrete geometric representation in MCNP code2011 - ANTUNES, PAULA C.G.; SIQUEIRA, PAULO T.D.; FONSECA, GABRIEL P.; YORIYAZ, HELIO; CASTRO, VINICIUS A.Artigo IPEN-doc 15001 Analysis of material characteristics for the construction of energy degrading and scattering plates for electron beam akin radiotherapy2009 - FONSECA, GABRIEL P.; YORIYAZ, HELIO; SIQUEIRA, PAULO T.D.; ANTUNES, PAULA C.G.; FURNARI, LAURA; SANTOS, GABRIELA R.Artigo IPEN-doc 14099 Reconstruction of segmented human voxel phantoms for skin dosimetry2009 - ANTUNES, PAULA C.G.; SIQUEIRA, PAULO de T.D.; YORIYAZ, HELIO; FONSECA, GABRIEL P.; REIS, GABRIELA; FURNARI, LAURAHigh-resolution medical images along with methods that simulate the interaction of radiation with matter, as the Monte Carlo radiation transport codes, have been widely used in medical physics procedures. These images provide the construction of realistic anatomical models, which after being coupled to these codes, may drive to better assessments of dose distributions on the patient. These anatomical models constructed from medical images are known as voxel phantoms (voxel - volume element of an image). Present day regular images are unsuitable to correctly perform skin dose distribution evaluations. This inability is due to improper skin discrimination in most of the current medical images, once its thickness stands below the resolution of the pixels that form the image. This paper proposes the voxel phantom reconstruction by subdividing and segmentating the elements that form the phantom. It is done in order to better discriminate the skin by assigning it more adequate thickness and actual location, allowing a better dosimetric evaluation of the skin. This task is an important issue in many radiotherapy procedures. Particular interest lays in Total Skin Irradiation (TSI) with electron beams, where skin dose evaluation stands as the treatment key point of the whole body irradiation. This radiotherapy procedure is under implementation at the Hospital das Clínicas da Universidade de São Paulo (HC-USP).Resumo IPEN-doc 16478 Clinical electron beam chracteristics investigations using the Monte Carlo method for absorbed dose determination2007 - YORIYAZ, H.; SIQUEIRA, P.; POLI, M.; FURNARI, L.; RUBO, R.; RODRIGUES, L.; FONSECA, G.Resumo IPEN-doc 16114 Phantom de voxel para tratamento de doenças de pele2010 - ANTUNES, P.C.G.; SIQUEIRA, P.T.D.; YORIYAZ, H.; FONSECA, G.P.Resumo IPEN-doc 16116 Reconstrução do Espectro do Acelerador Linear Varian Clinac 2100c do Serviço de Radioterapia do Hospital das Clínicas da Universidade de São Paulo através do Software MCNP4C Baseado no método de Monte Carlo2010 - FONSECA, G.P.; YORIYAZ, H.; SIQUEIRA, P.T.D.; ANTUNES, P.C.G.; FURNARI, L.; SANTOS, G.R.