Optimization of dose distribution in total skin irradiation with electron beam
Carregando...
Data
Data de publicação
2004
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
É parte de
INTERNATIONAL CONGRESS OF THE INTERNATIONAL RADIATION PROTECTION ASSOCIATION, 11th
Exportar
Resumo
This work describes a treatment technique using total
skin irradiation using a 4 MeV electrons beam, the dosimetric process applied in the
treatment and the comparison with data obtained by means of Monte Carlo simulation.
This method intends to improve the uniformity of the dose in the patient, to reduce the
problems with the overlapping treatment fields, that occurs in conventional treatment
that uses 1m of focus-skin distance as well to reduce the patient treatment time, in order
to obtain a uniform dose distribution in the patient. It was simulated different radiation
incidence angles between each beam fixing the distance, which is characteristic of each
treatment room. The patient is placed on a rotate base stand up and perpendicular to the
beam, distant 2.83m from the gantry and he assumes successively 6 positions with 60
degrees of interval between the rotations. In each position the patient receives a couple
of beams (the beam angulation is 19.5 degrees above the transversal axis in the middle
of the patient and 19.5 degrees below it). The delivered doses in the patient were
measured with dosimetric films placed in an anthropomorphic phantom and with
thermoluminescent dosimeters placed on patient´skin surface .The delivered doses in
the treatment plane were compared to the simulated data obtained from the Monte Carlo
Code MCNP-4B .
The obtained results are summarized as follows:
1) The simulated data using Monte Carlo technique showed good agreement
with those measured with dosimetric films .
2) The dose distributions in the phantom were found according to that
described in the international protocols as AAPM No 23, indicating that is possible to
utilize this technique in the treatments using total skin irradiation with electron beam.
Como referenciar
POLI, M.E.R.; PEREIRA, S.A.; YORIYAZ, H.; CAMPOS, L.L. Optimization of dose distribution in total skin irradiation with electron beam. In: INTERNATIONAL CONGRESS OF THE INTERNATIONAL RADIATION PROTECTION ASSOCIATION, 11th, 23-28 May, 2004, Madrid, Spain. Disponível em: http://repositorio.ipen.br/handle/123456789/19906. Acesso em: 24 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.