Dosimetric application of a special pencil ionization chamber in radiotherapy x-ray beams
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Radiation Physics and Chemistry
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The aim of this work was to study the performance of a pencil ionization chamber with a sensitive
volume of only 1.06 cm3 and a length of 3.0 cm, developed at the Calibration Laboratory of the IPEN,
in very low-energy radiotherapy X-ray beams. These beams are still used for certain skin cancer
treatments due to their rapid attenuation in tissue. The dosimeter performance was evaluated in some
tests proposed by the IEC 60731 standard: short- and long-term stability and linearity of response. For a
complete analysis of the dosimeter response, the EGSnrc Monte Carlo simulation was utilized to
investigate the influence of its different parts on the ionization chamber response. All results of the
tests were in accordance with the recommended limits, and this work shows that it is possible to
extend the application of this pencil-type ionization chamber developed at the LCI.
Como referenciar
NEVES, LUCIO P.; PERINI, ANA P.; FERNANDEZ VAREA, JOSÉ M.; CASSOLA, VAGNER F.; KRAMER, RICHARD; KHOURY, HELEN J.; CALDAS, LINDA V.E. Dosimetric application of a special pencil ionization chamber in radiotherapy x-ray beams. Radiation Physics and Chemistry, v. 95, p. 98-100, 2014. DOI: 10.1016/j.radphyschem.2012.12.042. Disponível em: http://repositorio.ipen.br/handle/123456789/8547. Acesso em: 30 Dec 2025.
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.