Surface dose analysis of breast cancer post-mastectomy with and without Bolus using the three-dimensional conformal radiotherapy technique

Nurul Habibatul Jannah, Aditya Prayugo Hariyanto, Siti Aisyah, Evi Linggasari, Agus Rubiyanto, Mohammad Haekal, Muhammad Fadli, Endarko*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Linear Accelerator (LINAC) is one of the devices that is often used in external radiation treatment. Photon radiation treatment with targets near the surface results in a poor distribution of doses. Therefore, the use of a substitute tissue-equivalent increases the surface dose of the skin. The study aimed to evaluate the use of the bolus with silicone rubber and silica gel (SRS) to increase the surface dose and determine the percentage difference in a surface dose between measurement and treatment planning systems (TPS). Bolus was fabricated with 11×11 cm2 and a thickness of 0.5 cm and was irradiated by photon energy of 6 MV. The value of a surface dose is measured using an EBT3 film dosimeter using the Three Dimensional Conformal Radiotherapy (3D-CRT) technique. Based on the distribution test of dose on a bolus with a water slab phantom, the surface dose can be increased compared to no bolus with a value of 86.64%. Meanwhile, the percentage difference in surface dose on the thorax phantom between TPS and direct measurements showed a value above 10%. Some suggestions when using film dosimeters require specific designs and markings for placing the film in certain areas to prevent dose verification errors.

Original languageEnglish
Title of host publication11th International Seminar on New Paradigm and Innovation on Natural Sciences and Its Application, ISNPINSA 2021
Subtitle of host publicationDeveloping Science and Technology Toward the New Normal Era
EditorsQidir Maulana Binu Soesanto, Damar Nurwahyu Bima, Nor Basid Adiwibawa Prasetya, Heri Sugito, Alik Maulidiyah
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735445116
DOIs
Publication statusPublished - 2 Jun 2023
Event11th International Seminar on New Paradigm and Innovation on Natural Sciences and Its Application: Developing Science and Technology Toward the New Normal Era, ISNPINSA 2021 - Semarang, Virtual, Indonesia
Duration: 14 Oct 202115 Oct 2021

Publication series

NameAIP Conference Proceedings
Volume2738
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference11th International Seminar on New Paradigm and Innovation on Natural Sciences and Its Application: Developing Science and Technology Toward the New Normal Era, ISNPINSA 2021
Country/TerritoryIndonesia
CitySemarang, Virtual
Period14/10/2115/10/21

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