Published October 1987 | Version v1
Journal article Metadata-only

A model for calculating the dose distribution in heterogenous media

Creators

  • 1. Instituto Militar de Engenharia, Rio de Janeiro (Brazil)

Description

A model for calculating the dose distribution in heterogenous media. A theoretical model based on the Fermi-Eyges multiple scattering theory was developed for the dose distribution of therapeutic electron beams in heterogeneous media. The central axis depth dose distributions for several energies and field sizes were obtained with a plane parallel ionization chamber. Phantom materials simulating soft tissue, bone and lung were used in this study. The theoretical results and the experimental data are compared, showing a good agreement. (author)

Abstract (Portuguese)

A teoria de espalhamento de Fermi-Eyges serviu como base para a construcao de um modelo teorico para a distribuicao de dose absorvida, que considera as caracteristicas de um feixe terapeutico de eletrons em meios heterogeneos. As curvas de distribuicao de dose no eixo central foram obtidas com uma camara de ionizacao de placas paralelas, para energias e tamanhos de campo variaveis. Os materiais utilizados, como fantoma, simulam tecido mole, osso e pulmao. Os resultados teoricos sao comparados com os dados experimentais, apresentando boa concordancia. (author)

Additional details

Additional titles

Original title (Portuguese)
Um modelo para calculo de distribuicao de dose em meios heterogeneos

Publishing Information

Journal Title
Radiol. Bras.
Journal Volume
20
Journal Issue
4
Series
Radiol. Bras.
Journal Page Range
227-231
ISSN
0100-3984
CODEN
RDBRA

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
19092629
Subject category
S61: RADIATION PROTECTION AND DOSIMETRY; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
COMPARATIVE EVALUATIONS; ELECTRON BEAMS; NUCLEAR MODELS; PHANTOMS; RADIATION DOSES; SPATIAL DOSE DISTRIBUTIONS; THEORETICAL DATA
Descriptors DEC
BEAMS; DATA; DISTRIBUTION; EVALUATION; INFORMATION; LEPTON BEAMS; MATHEMATICAL MODELS; MOCKUP; NUMERICAL DATA; PARTICLE BEAMS; RADIATION DOSE DISTRIBUTIONS; SPATIAL DISTRIBUTION; STRUCTURAL MODELS