Email this article Empirical Law to Evaluate the Skin Dose with Photon Beam Energy and Irradiation Field Size
- Authors: Bencheikh M.1, Didi A.1, Maghnouj A.1, Tajmouati J.1, Benkhouya Y.2,3, El Ouahdani S.4
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Affiliations:
- LISTA Laboratory, Department of Physics, Faculty of Sciences Dhar El-Mahraz, University of Sidi Mohamed Ben Abdellah
- Department of Radiotherapy, Al Kawtar Clinic
- Nuclear Physics Laboratory, Faculty of Sciences Agdal, Mohammed V University
- Faculty of Sciences, Abdelmalek Eassaâdi University
- Issue: Vol 73, No 6 (2018)
- Pages: 683-686
- Section: Biophysics and Medical Physics
- URL: https://journals.rcsi.science/0027-1349/article/view/165260
- DOI: https://doi.org/10.3103/S0027134918060036
- ID: 165260
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Abstract
The objective of this study is to evaluate mathematically an empirical law governs the skin dose with photon beam energy and irradiation field size based on experiment data of dose distributions. The dose distributions were expressed on percentage depth dose (PDD). The measurements of PDDs were done as a function of irradiation field size with an uncertainty of 2% as recommended by IAEA protocols.
The skin dose corresponds to PDD at depth of 0 mm for photon beam energy of 6 and 18 MV. For these both photon beam energies, the skin dose increased linearly with irradiation field size and the skin dose rate decreased in power law as a function of irradiation field size with mathematical error under to 10%. This law allows us to predict the skin dose with irradiation field size for high radiotherapy quality and high protection of organ at risks.
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About the authors
Mohamed Bencheikh
LISTA Laboratory, Department of Physics, Faculty of Sciences Dhar El-Mahraz,University of Sidi Mohamed Ben Abdellah
Author for correspondence.
Email: bc.mohamed@gmail.com
Morocco, Fez
Abdessamad Didi
LISTA Laboratory, Department of Physics, Faculty of Sciences Dhar El-Mahraz,University of Sidi Mohamed Ben Abdellah
Email: bc.mohamed@gmail.com
Morocco, Fez
Abdelmajid Maghnouj
LISTA Laboratory, Department of Physics, Faculty of Sciences Dhar El-Mahraz,University of Sidi Mohamed Ben Abdellah
Email: bc.mohamed@gmail.com
Morocco, Fez
Jaouad Tajmouati
LISTA Laboratory, Department of Physics, Faculty of Sciences Dhar El-Mahraz,University of Sidi Mohamed Ben Abdellah
Email: bc.mohamed@gmail.com
Morocco, Fez
Yassine Benkhouya
Department of Radiotherapy, Al Kawtar Clinic; Nuclear Physics Laboratory, Faculty of Sciences Agdal, Mohammed V University
Email: bc.mohamed@gmail.com
Morocco, Fez; Rabat
Sanae El Ouahdani
Faculty of Sciences, Abdelmalek Eassaâdi University
Email: bc.mohamed@gmail.com
Morocco, Tetouan
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