Neutron contamination in medical linear accelerators operating at electron mode

摘要：

　　Nowadays,neutron contamination in high energy photon beams normally used in radiotherapy treatments is an issue of interest from the radioprotection point of view.However,neutron production when using electron beams to treat superficial tumors has usually been ignored.The aim of this paper was to study such contamination and its effect on patients.In order to do that,experimental measurements in a radiotherapy environment were carried out using a digital device sensitive to thermal neutrons.Besides,Monte Carlo simulations were performed to estimate the difference in number of particles between photon and electron operational modes,required to deposit the same dose at a certain depth.Results show that neutron production is lower for electron beams than photon ones but not as low as previously expected.

关键词： Neutron contamination electron beam therapy secondary cancer

作者: M.R. Expósito F. Gómez J. Roselló F. Sánchez-Doblado M.I. Romero-Hermida J. A. Terrón D. Esposito D. Planes J. I. Lagares B.Sánchez-Nieto K. Amgarou C. Domingo

作者单位: Dpto. Fisiología Médica y Biofísica, Univ. de Sevilla, Spain Dpto. de Física de Partículas, Univ. de Santiago de Compostela, Spain ERESA, Valencia, Spain;Dpto. de Fisiología, Univ. de Valencia, Spain Dpto. Fisiología Médica y Biofísica, Univ. de Sevilla, Spain;Hospital Univ. Virgen Macarena, Sevilla Hospital Univ. Virgen Macarena, Sevilla, Spain ERESA, Valencia, Spain Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas(CIEMAT), Madrid, Spain Dpto. de Física, Pontificia Univ. Católica de Chile, Santiago, Chile Dpto. de Física, Univ. Aut. de Barcelona, Bellaterra, Spain

会议类型: 国际会议

会议名称: World Congress on Medical Physics and Biomedical Engineering (2012年医学物理及生物医学工程国际会议(IFMBE))

会议地点: 北京

会议语种:英文

页码: 1225-1228

在线出版日期: 2012-05-26（万方平台首次上网日期，不代表论文的发表时间）