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- Title
Optimum Treatment Planning Technique Evaluation for Synchronous Bilateral Breast Cancer with Left Side Supraclavicular Lymph Nodes.
- Authors
Madlool, Sura Abdulkareem; Abdullah, Siham Sabah; Alabedi, Haydar Hamza; Alazawy, Nabaa M.; Al-Musawi, Mustafa Jabbar; Saad, Dalia; Al-Nidawi, Ibrahim; Ammar, Hani
- Abstract
Introduction: Bilateral breast cancer cases are classified as complex in radiotherapy treatment, especially those with the left side mastectomy and right-side lumpectomy with left side supraclavicular lymph nodes patients. The purpose of this study is to find the optimum treatment planning technique among the three available techniques: 3Dimentional conformal Radiotherapy (3D-CRT), Intensity modulated radiation therapy (IMRT), and Volumetric Modulated Arc Therapu (VMAT). Material and Methods: Ten Bilateral breast cancer included in this study with left-side mastectomy and right-side lumpectomy with left-side supraclavicular lymph nodes. The patients are delineated by oncologists and prepared for radiation planning by MONACO 5.1 treatment planning system (TPS) with an X-ray photon beam of 6 MV or 10 MV energy using ELEKTA's Agility linear accelerator. The prescribed dose is set at 4005 cCy per 15 fractions. Statistically with anova test among each other. Results: The treatment with 3D-CRT, IMRT, and VMAT show a significant difference in the results. VMAT gives high dose distribution for the left mastectomy breast and its regional supraclavicular lymph nodes, while the IMRT gives a higher value for the right side breast with lumpectomy. The good homogeneity index is acquired with IMRT, while VMAT gives a better conformity index. The 3D-CRT planning technique lowers the dose to the heart and lunges better than the other techniques. Conclusion: depending on the patient health and stage, the optimum treatment planning is applied. VMAT and IMRT give effective results than the 3D-CRT.
- Subjects
MONACO; PLANNING techniques; LYMPH nodes; BREAST cancer; LINEAR accelerators; PHOTON beams; RADIOTHERAPY; BREAST
- Publication
Iranian Journal of Medical Physics / Majallah-I Fīzīk-I Pizishkī-i Īrān, 2021, Vol 18, Issue 6, p414
- ISSN
1735-160X
- Publication type
Article
- DOI
10.22038/IJMP.2020.49211.1791