Improving Clinical dosimetric Accuracy of Cancer Treatment Using a Special Quality of Electron and Photon Beam
Abstract
Abstract Views: 363
Electron and photon beams demonstrate extraordinary characteristics useful for the treatment of cancer. These characteristics are essential to analyze before the calibration of the linear accelerator with dual energies. This study focused on the dosimetric characteristics of the different energies of electron beam for different field sizes. The basic objective of this work was to calculate the dosimetric parameters and characteristics of the electron beam, especially depth dose characteristics along the central axis. In this work, 6 MeV, 9 MeV, 12 MeV, 15 MeV and 18 MeV of electron beam and 6 MV and 15 MV of photon beam with different field sizes were used. The characteristics of the depth dose of electron and photon beams in water were analyzed to optimize the radiation quality for radiation treatment planning. The different beam characteristics are due to different interactions that occur between electron beams giving them a definite range, whereas photon beams are attenuated leading to dose deposition and a much larger range with no definite end. Depth dose characteristics of electron and photon beams are not similar since the interaction of these beams with matter depends on their quality. Attenuation and penetration factors change with changing dosimetric parameters. A complete analysis of the dosimetric characteristics of electron and photon beams helps to choose the more accurate beam for the treatment of cancer. This work helps to increase accuracy in the treatment of cancer with radiotherapy.
Copyright(c) The Authors
Downloads
References
2. Afzal M. Some aspects of the application of Fricke and other Gels with NMR Detection to image and plot radiation beams for tumor therapy: PhD thesis] University of Dundee, UK; 1998.
3. Buzdar SA, Afzal M, Todd-Pokropek AJJoAMCA. Comparison of pencil beam and collapsed cone algorithms, in radiotherapy treatment planning for 6 and 10 MV photon. 2010;22(3):152-4.
4. Khan FM, Gibbons JP, Sperduto PW. Khan's treatment planning in radiation oncology: Lippincott Williams & Wilkins; 2016.
5. Kesen ND, Cakir A, Okutan M, Bilge HJS, Installations ToN Research of Dosimetry Parameters in Small Electron Beams. 2014.
6. Moskvin V, Salvat F, Stewart DK, DesRosiers CM, editors. PENELOPE Monte Carlo engine for treatment planning in radiation therapy with very high energy electrons (VHEE) of 150–250 MeV. IEEE Nuclear Science Symposuim & Medical Imaging Conference; 2010: IEEE.
7. Subiel A, Moskvin V, Welsh GH, Cipiccia S, Reboredo D, Evans P, et al. Dosimetry of very high energy electrons (VHEE) for radiotherapy applications: using radiochromic film measurements and Monte Carlo simulations. 2014;59(19):5811.
8. Elsayad K, Susek KH, Eich HTJOR, Treatment. Total skin electron beam therapy as part of multimodal treatment strategies for primary cutaneous T-cell lymphoma. 2017;40(5):244-52.
9. Schüttrumpf L, Neumaier K, Maihoefer C, Niyazi M, Ganswindt U, Li M, et al. Dose optimization of total or partial skin electron irradiation by thermoluminescent dosimetry. 2018;194(5):444-53.
10. Avanzo M, Dassie A, Acharya PC, Chiovati P, Pirrone G, Avigo C, et al. Electron radiotherapy (IOERT) for applications outside of the breast: Dosimetry and influence of tissue inhomogeneities. 2020;69:82-9.
11. Kron T, Lehmann J, Greer PBJPiM, Biology. Dosimetry of ionising radiation in modern radiation oncology. 2016;61(14):R167.
12. McEwen M, Sharpe P, Vörös SJM. Evaluation of alanine as a reference dosimeter for therapy level dose comparisons in megavoltage electron beams. 2015;52(2):272.
13. Muir B, McEwen M, Rogers DJMP. Beam quality conversion factors for parallel‐plate ionization chambers in MV photon beams. 2012;39(3):1618-31.
14. accard M, Durán MT, Petersson K, Germond JF, Liger P, Vozenin MC, et al. High dose‐per‐pulse electron beam dosimetry: Commissioning of the Oriatron eRT6 prototype linear accelerator for preclinical use. 2018;45(2):863-74.
15. Khan FM, Doppke KP, Hogstrom KR, Kutcher GJ, Nath R, Prasad SC, et al. Clinical electron‐beam dosimetry: report of AAPM radiation therapy committee task group No. 25. 1991;18(1):73-109.
16. Wambersie A, G. Menzel H, A. Gahbauer R, TL Jones D, D. Michael B, Paretzke HJRpd. Biological weighting of absorbed dose in radiation therapy. 2002;99(1-4):445-52.
17. Buzdar SA, Afzal M, Todd-Pokropek AJJoAMCA. Comparison of pencil beam and collapsed cone algorithms, in radiotherapy treatment planning for 6 and 10 MV photon. 2010;22(3):152-4.
18. Buzdar SA, Rao MA, Nazir AJJoAMCA. An analysis of depth dose characteristics of photon in water. 2009;21(4):41-5.
19. ICRU RDJIR. Electron beams with energies between 1 and 50 MeV. 1984;35.
20. Klevenhagen SC. Physics and dosimetry of therapy electron beams: Medical Physics Publishing Corporation; 1993.
Copyright (c) 2021 Ayesha Ikhlaq, Saeed Ahmad Buzdar, Muhammad Usman Mustafa, Sana Salahuddin, Mehr-Un-Nisa, Mamoona Aslam
This work is licensed under a Creative Commons Attribution 4.0 International License.
