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Investigation of the neutron contamination in IMRT deliveries with a paired magnesium and boron coated magnesium ionization chamber system.

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Investigation of the neutron contamination in IMRT deliveries with a paired magnesium and boron coated magnesium ionization chamber system. / Becker, Julian; Brunckhorst, Elin; Schmidt, Rainer.

In: RADIOTHER ONCOL, Vol. 86, No. 2, 2, 2008, p. 182-186.

Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

Harvard

Becker, J, Brunckhorst, E & Schmidt, R 2008, 'Investigation of the neutron contamination in IMRT deliveries with a paired magnesium and boron coated magnesium ionization chamber system.', RADIOTHER ONCOL, vol. 86, no. 2, 2, pp. 182-186. <http://www.ncbi.nlm.nih.gov/pubmed/18023490?dopt=Citation>

APA

Becker, J., Brunckhorst, E., & Schmidt, R. (2008). Investigation of the neutron contamination in IMRT deliveries with a paired magnesium and boron coated magnesium ionization chamber system. RADIOTHER ONCOL, 86(2), 182-186. [2]. http://www.ncbi.nlm.nih.gov/pubmed/18023490?dopt=Citation

Vancouver

Becker J, Brunckhorst E, Schmidt R. Investigation of the neutron contamination in IMRT deliveries with a paired magnesium and boron coated magnesium ionization chamber system. RADIOTHER ONCOL. 2008;86(2):182-186. 2.

Bibtex

@article{53276c28a2a041c385970daead40b483,
title = "Investigation of the neutron contamination in IMRT deliveries with a paired magnesium and boron coated magnesium ionization chamber system.",
abstract = "BACKGROUND AND PURPOSE: Photon beams used in IMRT treatments with high energies (>10 MV) are contaminated with neutrons. Measurement of this neutron dose is of significance to the overall risk estimate of high energy radiotherapy. MATERIALS AND METHODS: For measuring neutron doses a paired magnesium and boron coated magnesium chamber system was used. All measurements were performed inside the solid water phantom EasyCube using abdominal extensions. 4 different clinical treatment plans were studied. RESULTS: The measured neutron dose showed to be homogeneous inside the phantom and increased with increased number of applied monitor units. The sum over all fractions showed neutron doses of 1-2 mGy, depending on the kind of treatment. CONCLUSIONS: Using large conversion factors of 25 Sv/Gy, none of the studied treatment plans exceeded dose equivalents of 50 mSv for the whole treatment. This dose equivalent has to be considered whole body dose due to the homogeneous distribution of neutrons.",
author = "Julian Becker and Elin Brunckhorst and Rainer Schmidt",
year = "2008",
language = "Deutsch",
volume = "86",
pages = "182--186",
journal = "RADIOTHER ONCOL",
issn = "0167-8140",
publisher = "Elsevier Ireland Ltd",
number = "2",

}

RIS

TY - JOUR

T1 - Investigation of the neutron contamination in IMRT deliveries with a paired magnesium and boron coated magnesium ionization chamber system.

AU - Becker, Julian

AU - Brunckhorst, Elin

AU - Schmidt, Rainer

PY - 2008

Y1 - 2008

N2 - BACKGROUND AND PURPOSE: Photon beams used in IMRT treatments with high energies (>10 MV) are contaminated with neutrons. Measurement of this neutron dose is of significance to the overall risk estimate of high energy radiotherapy. MATERIALS AND METHODS: For measuring neutron doses a paired magnesium and boron coated magnesium chamber system was used. All measurements were performed inside the solid water phantom EasyCube using abdominal extensions. 4 different clinical treatment plans were studied. RESULTS: The measured neutron dose showed to be homogeneous inside the phantom and increased with increased number of applied monitor units. The sum over all fractions showed neutron doses of 1-2 mGy, depending on the kind of treatment. CONCLUSIONS: Using large conversion factors of 25 Sv/Gy, none of the studied treatment plans exceeded dose equivalents of 50 mSv for the whole treatment. This dose equivalent has to be considered whole body dose due to the homogeneous distribution of neutrons.

AB - BACKGROUND AND PURPOSE: Photon beams used in IMRT treatments with high energies (>10 MV) are contaminated with neutrons. Measurement of this neutron dose is of significance to the overall risk estimate of high energy radiotherapy. MATERIALS AND METHODS: For measuring neutron doses a paired magnesium and boron coated magnesium chamber system was used. All measurements were performed inside the solid water phantom EasyCube using abdominal extensions. 4 different clinical treatment plans were studied. RESULTS: The measured neutron dose showed to be homogeneous inside the phantom and increased with increased number of applied monitor units. The sum over all fractions showed neutron doses of 1-2 mGy, depending on the kind of treatment. CONCLUSIONS: Using large conversion factors of 25 Sv/Gy, none of the studied treatment plans exceeded dose equivalents of 50 mSv for the whole treatment. This dose equivalent has to be considered whole body dose due to the homogeneous distribution of neutrons.

M3 - SCORING: Zeitschriftenaufsatz

VL - 86

SP - 182

EP - 186

JO - RADIOTHER ONCOL

JF - RADIOTHER ONCOL

SN - 0167-8140

IS - 2

M1 - 2

ER -