UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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2024-11-23 17:52

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Conference: Bucharest University Faculty of Physics 2022 Meeting


Section: Biophysics; Medical Physics


Title:
Dose-volume parameters in prostate radiotherapy. Comparison between 3D and VMAT Techniques.


Authors:
Elif SELIM(1), Claudia CHILOM(1), Lucia ENCIU(2)


Affiliation:
1)Department of Biophysics, Faculty of Physics, University of Bucharest, 405 Atomistilor, Magurele-Ilfov, Romania

2)MedEuropa Radiotherapy Center, Stefanita- Voda, No 30, Constanta


E-mail
elifselim2000@gmail.com


Keywords:
prostate neoplasm, volumetric modulated arc therapy (VMAT), 3D radiotherapy


Abstract:
The aim of this work is the comparison between 3D and VMAT techniques applied to the prostate neoplasm irradiation. The dose-volume parameters were analyzed to highlight the importance of the irradiation technique and of the doses collected in radiotherapy by the tumor volume and by the organs at risk. The most important organs at risk in the case of prostate neoplasm are bladder and rectum. The study analyzes the doses collected by the bladder and rectum and the coverage of the tumor volume by these two techniques. The analysis was made on 18 patients, for each patient in part being made 3D and VMAT plans. The prescribed dose was 78 Gy in 39 fractions with 2 Gy per day. The images necessary for the planning were purchased with Computer Tomography by Siemens. Then they were exported in Monaco Treatment Planning System for dose distribution calculation. Using Microsoft Excel software, we determined the average dose delivered at the tumor volume and processed in Excel all the doses obtained in DVH for the 18 patients through the two irradiation techniques.


References:

Gardner, S., Kim, J., & Chetty, I. (2019). Modern Radiation Therapy Planning and Delivery. Hematology/oncology clinics of North America

Venneste, B., Van Limbergen, E., van Lin, E., van Roermund, J., & Lambin, P. (2016). Prostate Cancer Radiation Therapy: What Do Clinicians Have to Know? BioMed Research International

Adam, D., Suditu, M., Popa, R., Ion, R., & Ciocaltei, V. (2014). A treatment planning study comparing VMAT with 3D conformal radiotherapy for prostate cancer using PINNACLE planning system. Romanian Reports in Physics