Microdosimetric measurement of secondary radiation in the passive scattered proton therapy room of ithemba labs using a tissue-equivalent proportional counter

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Microdosimetric measurement of secondary radiation in the passive scattered proton therapy room of ithemba labs using a tissue-equivalent proportional counter. / Chiriotti Alvarez, Sabina; Parisi, Alessio; Vanhavere, Filip; De Saint-Hubert, Marijke; Vandevoorde, Charlot; Slabbert, J.; Beukes, P.; de Kock, E.; Symons, J.

In: Radiation Protection Dosimtery, 22.03.2018, p. 1-6.

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@article{01569f1a135b4001bb2987770606a3f2,
title = "Microdosimetric measurement of secondary radiation in the passive scattered proton therapy room of ithemba labs using a tissue-equivalent proportional counter",
abstract = "Measurements of the dose equivalent at different distances from the isocenter of the proton therapy center at iThemba LABS were previously performed with a tissue-equivalent proportional counter (TEPC). These measurements showed that the scattered radiation levels were one or two orders of magnitude higher in comparison to other passive scattering delivery systems. In order to reduce these radiation levels, additional shielding was installed shortly after the measurements were done. Therefore, the aim of this work is to quantify and assess the reduction of the secondary doses delivered in the proton therapy room at iThemba LABS after the installation of the additional shielding. This has been performed by measuring microdosimetric spectra with a TEPC at 11 locations around the isocenter when a clinical modulated beam of 200 MeV proton was impinging onto a water phantom placed at the isocenter.",
keywords = "Microdosimetry, TEPC, Proton Therapy",
author = "{Chiriotti Alvarez}, Sabina and Alessio Parisi and Filip Vanhavere and {De Saint-Hubert}, Marijke and Charlot Vandevoorde and J. Slabbert and P. Beukes and {de Kock}, E. and J. Symons",
note = "Score=10",
year = "2018",
month = "3",
day = "22",
doi = "10.1093/rpd/ncy056",
language = "English",
pages = "1--6",
journal = "Radioation Protection Dosimitry",
issn = "0144-8420",
publisher = "Oxford University Press",

}

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TY - JOUR

T1 - Microdosimetric measurement of secondary radiation in the passive scattered proton therapy room of ithemba labs using a tissue-equivalent proportional counter

AU - Chiriotti Alvarez, Sabina

AU - Parisi, Alessio

AU - Vanhavere, Filip

AU - De Saint-Hubert, Marijke

AU - Vandevoorde, Charlot

AU - Slabbert, J.

AU - Beukes, P.

AU - de Kock, E.

AU - Symons, J.

N1 - Score=10

PY - 2018/3/22

Y1 - 2018/3/22

N2 - Measurements of the dose equivalent at different distances from the isocenter of the proton therapy center at iThemba LABS were previously performed with a tissue-equivalent proportional counter (TEPC). These measurements showed that the scattered radiation levels were one or two orders of magnitude higher in comparison to other passive scattering delivery systems. In order to reduce these radiation levels, additional shielding was installed shortly after the measurements were done. Therefore, the aim of this work is to quantify and assess the reduction of the secondary doses delivered in the proton therapy room at iThemba LABS after the installation of the additional shielding. This has been performed by measuring microdosimetric spectra with a TEPC at 11 locations around the isocenter when a clinical modulated beam of 200 MeV proton was impinging onto a water phantom placed at the isocenter.

AB - Measurements of the dose equivalent at different distances from the isocenter of the proton therapy center at iThemba LABS were previously performed with a tissue-equivalent proportional counter (TEPC). These measurements showed that the scattered radiation levels were one or two orders of magnitude higher in comparison to other passive scattering delivery systems. In order to reduce these radiation levels, additional shielding was installed shortly after the measurements were done. Therefore, the aim of this work is to quantify and assess the reduction of the secondary doses delivered in the proton therapy room at iThemba LABS after the installation of the additional shielding. This has been performed by measuring microdosimetric spectra with a TEPC at 11 locations around the isocenter when a clinical modulated beam of 200 MeV proton was impinging onto a water phantom placed at the isocenter.

KW - Microdosimetry

KW - TEPC

KW - Proton Therapy

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/29336908

U2 - 10.1093/rpd/ncy056

DO - 10.1093/rpd/ncy056

M3 - Article

SP - 1

EP - 6

JO - Radioation Protection Dosimitry

JF - Radioation Protection Dosimitry

SN - 0144-8420

ER -

ID: 4078742