open access

Vol 15, No 5 (2010)
Review
Published online: 2010-09-01
Submitted: 2010-05-27
Get Citation

A review on photoneutrons characteristics in radiation therapy with high-energy photon beams

Alireza Naseri, Asghar Mesbahi
DOI: 10.1016/j.rpor.2010.08.003
·
Rep Pract Oncol Radiother 2010;15(5):138-144.

open access

Vol 15, No 5 (2010)
Review
Published online: 2010-09-01
Submitted: 2010-05-27

Abstract

In radiation therapy with high-energy photon beams (E[[ce:hsp sp="0.25"/]]>[[ce:hsp sp="0.25"/]]10[[ce:hsp sp="0.25"/]]MeV) neutrons are generated mainly in linacs head thorough (γ,n) interactions of photons with nuclei of high atomic number materials that constitute the linac head and the beam collimation system. These neutrons affect the shielding requirements in radiation therapy rooms and also increase the out-of-field radiation dose of patients undergoing radiation therapy with high-energy photon beams. In the current review, the authors describe the factors influencing the neutron production for different medical linacs based on the performed measurements and Monte Carlo studies in the literature.

Abstract

In radiation therapy with high-energy photon beams (E[[ce:hsp sp="0.25"/]]>[[ce:hsp sp="0.25"/]]10[[ce:hsp sp="0.25"/]]MeV) neutrons are generated mainly in linacs head thorough (γ,n) interactions of photons with nuclei of high atomic number materials that constitute the linac head and the beam collimation system. These neutrons affect the shielding requirements in radiation therapy rooms and also increase the out-of-field radiation dose of patients undergoing radiation therapy with high-energy photon beams. In the current review, the authors describe the factors influencing the neutron production for different medical linacs based on the performed measurements and Monte Carlo studies in the literature.

Get Citation

Keywords

Photoneutron; Radiation therapy; Photon beams; Neutron spectra; Neutron source strength

About this article
Title

A review on photoneutrons characteristics in radiation therapy with high-energy photon beams

Journal

Reports of Practical Oncology and Radiotherapy

Issue

Vol 15, No 5 (2010)

Pages

138-144

Published online

2010-09-01

DOI

10.1016/j.rpor.2010.08.003

Bibliographic record

Rep Pract Oncol Radiother 2010;15(5):138-144.

Keywords

Photoneutron
Radiation therapy
Photon beams
Neutron spectra
Neutron source strength

Authors

Alireza Naseri
Asghar Mesbahi

Important: This website uses cookies. More >>

The cookies allow us to identify your computer and find out details about your last visit. They remembering whether you've visited the site before, so that you remain logged in - or to help us work out how many new website visitors we get each month. Most internet browsers accept cookies automatically, but you can change the settings of your browser to erase cookies or prevent automatic acceptance if you prefer.

By "Via Medica sp. z o.o." sp.k., ul. Świętokrzyska 73, 80–180 Gdańsk, Poland
tel.:+48 58 320 94 94, fax:+48 58 320 94 60, e-mail: journals@viamedica.pl