TY - GEN
T1 - Surface dose analysis of breast cancer post-mastectomy with and without Bolus using the three-dimensional conformal radiotherapy technique
AU - Jannah, Nurul Habibatul
AU - Hariyanto, Aditya Prayugo
AU - Aisyah, Siti
AU - Linggasari, Evi
AU - Rubiyanto, Agus
AU - Haekal, Mohammad
AU - Fadli, Muhammad
AU - Endarko,
N1 - Publisher Copyright:
© 2023 Author(s).
PY - 2023/6/2
Y1 - 2023/6/2
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85163297586&partnerID=8YFLogxK
U2 - 10.1063/5.0140136
DO - 10.1063/5.0140136
M3 - Conference contribution
AN - SCOPUS:85163297586
T3 - AIP Conference Proceedings
BT - 11th International Seminar on New Paradigm and Innovation on Natural Sciences and Its Application, ISNPINSA 2021
A2 - Soesanto, Qidir Maulana Binu
A2 - Bima, Damar Nurwahyu
A2 - Prasetya, Nor Basid Adiwibawa
A2 - Sugito, Heri
A2 - Maulidiyah, Alik
PB - American Institute of Physics Inc.
T2 - 11th International Seminar on New Paradigm and Innovation on Natural Sciences and Its Application: Developing Science and Technology Toward the New Normal Era, ISNPINSA 2021
Y2 - 14 October 2021 through 15 October 2021
ER -