Effect of Bolus Position on the Dose of Ionizing Radiation in a Linear Accelerator Simulation
https://doi.org/10.35596/1729-7648-2025-23-3-95-101
Abstract
The main goal of radiation therapy is to deliver a dose of ionizing radiation to a tumor. When irradiating foci located on the skin surface or at a shallow depth, the problem of overirradiation of healthy tissues arises. In order to optimize the distribution of the dose of ionizing radiation, auxiliary devices in the form of boluses are used in treatment practice. In this case, correct fixation of the bolus, ensuring its tight fit, is of great importance. An increase in the quality of dose distribution with tight fixation of the bolus has been experimentally proven. Numerical values of the dose at the control point with different bolus fit density have been obtained using different methods for calculating irradiation plans.
About the Authors
I. N. Chirkova
N. N. Aleksandrov National Cancer Center of Belarus; Belarusian State University of Informatics and Radioelectronics
Belarus
Chirkova I. N., Leading Medical Physicist, Department of Radiation Therapy Engineering; Postgraduate
Belarus
Chirkova I. N., Leading Medical Physicist, Department of Radiation Therapy Engineering; Postgraduate
M. V. Tumilovich
Belarusian State University of Informatics and Radioelectronics
Belarus
Tumilovich M. V., Dr. Sci. (Tech), Professor
Belarus
Tumilovich M. V., Dr. Sci. (Tech), Professor
References
1. Ratner T. G., Lebedenko I. M. (2022) Clinical Dosimetry. Physical and Technical Foundations. Moscow, National Research Nuclear University “Moscow Engineering Physics Institute”. 47–49.
2. Abel S., Renz P., Trombetto M. Local (2017) Failure and Acute Radiodermatological Toxicity in Patients Undergoing Radiation Therapy with and Without Postmastectomy Chest Wall Bolus: Is Bolus Ever Necessary. Practical Radiation Oncology. 7 (3), 167-172.
3. Kadar-Person O., Dahn H. M., Bese N. (2021) A Delfi Study and International Consensus Recommendation: The Use of Bolus in the Setting of Postmastectomy Radiation Therapy for Early Breast Cancer. Critical Reviews in Oncology/Hematology. 164, 115-121.
4. Chirkova I. N. (2024) Dependence of Dose Distribution of Ionizing Radiation on the Selected Method for Calculating the Irradiation Plan. Collection of Scientific Articles of the XVI International Scientific and Technical Conference, Minsk, Dec. 5–6. Minsk, Belarussian State University of Informatics and Radioelectronics. 260-265 (in Russian).
5. Ugurlu T., Akbas C. (2022) The Effect of Using Virtual Bolus on VMAT Plan Quality for Left-Sided Breast Cancer Patients. Applied Radiation and Isotopes. 189, 179–184.
6. Sakai Y., Monzen H., Tamuro M. (2023) Double Enhancement Effect of a Surface Dose with Tungsten Rubber Bolus in Photon Radiotherapy for Keloids and Superficial Tumors. Physical and Engineering Sciences in Medicine. 46 (1), 179-184.
7. Sturov A. V., Neshtjak S. F., Chetverikov S. F. (2015) On the Possibility of Changing the Isodose Distribution in Radiation Therapy. Medicine and Healthcare, Proceedings of the III International Scientific Conference. Kazan. 25-28 (in Russian).
8. Mieville F., Pitteloud N., Achard V. (2023) Post-Mastectomy Radiotherapy: Impact of Bolus Thickness and Irradiation Technique on Skin Dose. Journal of Medical Physics. 46, 1-13.
9. Tang C., Yuan J., Guo H., Dai Z., Liu B., Xi H., et al. (2024) Quantify the Effect of Air Gap Errors on Skin Dose for Breast Cancer Radiotherapy. Technology in Cancer Research & Treatment. 23. DOI: 10.1177/15330338241258566.
10. Goldman E. I., Titovich E. V. (2019) Human Body Anthropomorphic Phantom Utilisation for the Complex Testing of Radiation Therapy Technological Process. Doklady BGUIR. 7-8, 133-140 (in Russian).
11. Possibilities of Using Anatomical Plastinates as Anthropomorphic Phantoms. Radiation Hygiene: Results and Prospects: Collection of Works of the All-Russian Scientific and Practical Conference, 18 May 2022. Saint Petersburg, North-Western State Medical University named after I. I. Mechnikov. 6-7.
Review
For citations:
Chirkova I.N., Tumilovich M.V. Effect of Bolus Position on the Dose of Ionizing Radiation in a Linear Accelerator Simulation. Doklady BGUIR. 2025;23(3):95-101. (In Russ.) https://doi.org/10.35596/1729-7648-2025-23-3-95-101
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