OPTIMIZATION OF PERCENTAGE DEPTH DOSE BY COMBINATION OF ELECTRON BEAMS WITH DIFFERENT ENERGIES AND DIFFERENT CONTRIBUTION

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TAHMASEBI BIRGANI MOHAMMAD JAVAD; NADERI HAMIDEH; ZABIHZAHEH MANSOUR; CHEGENI NAHID; SHAHBAZIAN HOJATTOLLAH; MASKANI REZA; TABARI JUYBARI RAHELEH

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Journal: Jundishapur Scientific Medical Journal Year:2015 | Volume:14 | Issue:5 Page(s): 571-580

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Title

OPTIMIZATION OF PERCENTAGE DEPTH DOSE BY COMBINATION OF ELECTRON BEAMS WITH DIFFERENT ENERGIES AND DIFFERENT CONTRIBUTION

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Keywords

ELECTRONBEAMSQ2

4 GAUSSIAN FUNCTIONQ2

PERCENTAGE DEPTH DOSE CURVEQ2

Abstract

Background and Objective: Recently, electron beams are widely used for superficial and skin lesions treatment. Since the accelerator devices, create electron beams with finite energies, the treatment area is limited to a specified depth. The objective of this study was to assess the effect of combination of electron beams with different energies and different contribution in order to produce PDD curve with a more uniform central dose distribution for the shallow superficial lesions treatment (up to cm 3). The results were compared with using a single electron beam energy.Subjects and Methods: at First, percentage depth dose (PDD) was measured by using a Varian accelerator devices for energies 4, 6, 9, 12 Mev of electron beams and field size 20 × 20 cm2. Then, PDD curve was converted to dose curve. 4 GAUSSIAN FUNCTION was fit to dose curve using MATLAB software and the best combination was selected by combining different proportions of each of this functions.Results: percentage of the build up dose increased to about %90-%95 maximum dose and also percentage of the surface dose increases to about %90 maximum dose by combination of electron beams with different energies and different contribution.Conclusions: low energy electron beams Combination cause optimization of the dose distribution PDD curve. Furthermore, we can produce electron beam with arbitrary energy by this method.

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APA: Copy

TAHMASEBI BIRGANI, MOHAMMAD JAVAD, NADERI, HAMIDEH, ZABIHZAHEH, MANSOUR, CHEGENI, NAHID, SHAHBAZIAN, HOJATTOLLAH, MASKANI, REZA, & TABARI JUYBARI, RAHELEH. (2015). OPTIMIZATION OF PERCENTAGE DEPTH DOSE BY COMBINATION OF ELECTRON BEAMS WITH DIFFERENT ENERGIES AND DIFFERENT CONTRIBUTION. JUNDISHAPUR SCIENTIFIC MEDICAL JOURNAL, 14(5), 571-580. SID. https://sid.ir/paper/12289/en

Vancouver: Copy

TAHMASEBI BIRGANI MOHAMMAD JAVAD, NADERI HAMIDEH, ZABIHZAHEH MANSOUR, CHEGENI NAHID, SHAHBAZIAN HOJATTOLLAH, MASKANI REZA, TABARI JUYBARI RAHELEH. OPTIMIZATION OF PERCENTAGE DEPTH DOSE BY COMBINATION OF ELECTRON BEAMS WITH DIFFERENT ENERGIES AND DIFFERENT CONTRIBUTION. JUNDISHAPUR SCIENTIFIC MEDICAL JOURNAL[Internet]. 2015;14(5):571-580. Available from: https://sid.ir/paper/12289/en

IEEE: Copy

MOHAMMAD JAVAD TAHMASEBI BIRGANI, HAMIDEH NADERI, MANSOUR ZABIHZAHEH, NAHID CHEGENI, HOJATTOLLAH SHAHBAZIAN, REZA MASKANI, and RAHELEH TABARI JUYBARI, “OPTIMIZATION OF PERCENTAGE DEPTH DOSE BY COMBINATION OF ELECTRON BEAMS WITH DIFFERENT ENERGIES AND DIFFERENT CONTRIBUTION,” JUNDISHAPUR SCIENTIFIC MEDICAL JOURNAL, vol. 14, no. 5, pp. 571–580, 2015, [Online]. Available: https://sid.ir/paper/12289/en

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