Measurement of the photon and thermal neutron doses of contralateral breast surface in breast cancer radiotherapy

Bagheri, H. and Abedi Firouzjah, R. and Farhood, B. (2019) Measurement of the photon and thermal neutron doses of contralateral breast surface in breast cancer radiotherapy. Journal of Radiotherapy in Practice.

[img] Text
measurement_of_the_photon_and_thermal_neutron_doses_of_contralateral_breast_surface_in_breast_cancer_radiotherapy.pdf

Download (671kB)
Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....
DOI: UNSPECIFIED

Abstract

Introduction and purpose:During the radiation therapy of tumoral breast, the contralateral breast (CB) will receive scattered doses. In the present study, the photon and thermal neutron dose values received by CB surface during breast cancer radiation therapy were measured.Materials and methods:The right breast region of RANDO phantom was considered as CB, and the measurements of photon and thermal neutron dose values were carried out on this region surface. The phantom was irradiated with 18 MV photon beams, and the dose values were measured with thermoluminescent dosimeter (TLD-600 and TLD-700) chips for 11 � 13, 11 � 17 and 11 � 21 cm2 field sizes in the presence of physical and dynamic wedges.Results:The total dose values (photon + thermal neutron) received by the CB surface in the presence of physical wedge were 12·06, 15·75 and 33·40 of the prescribed dose, respectively, for 11 � 13, 11 � 17 and 11 � 21 cm2 field sizes. The corresponding dose values for dynamic wedge were 9·18, 12·92 and 29·26 of the prescribed dose, respectively. Moreover, the results showed that treatment field size and wedge type affect the received photon and thermal neutron doses at CB surface.Conclusion:According to our results, the total dose values received at CB surface during breast cancer radiotherapy with high-energy photon beams are remarkable. In addition, the dose values received at CB surface when using a physical wedge were greater than when using a dynamic wedge, especially for medial tangential fields. © Cambridge University Press 2019.

Item Type: Article
Additional Information: cited By 0
Subjects: Medicine
Engineering
Divisions: Faculty of Para medicine > Department of Management Radiology and Medical Physics
Depositing User: ART . editor
Date Deposited: 28 Jun 2020 11:57
Last Modified: 28 Jun 2020 11:57
URI: http://eprints.kaums.ac.ir/id/eprint/4717

Actions (login required)

View Item View Item