ELECTRONS CONTAMINATION EFFECT ON THE PHOTON DOSE DISTRIBUTION IN THE PLANNING TREATMENT FOR CANCEROUS PATIENTS

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CHEGENI NAHID; MIRKHAGHANI FARZANEH; HOSSEINI KHADIJEH; RAZMJOU GHALAEI SASAN; MASKANI REZA; TALAII GOMARI MARYAM

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Journal: Jundishapur Scientific Medical Journal Year:2017 | Volume:16 | Issue:1 Page(s): 65-79

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Title

ELECTRONS CONTAMINATION EFFECT ON THE PHOTON DOSE DISTRIBUTION IN THE PLANNING TREATMENT FOR CANCEROUS PATIENTS

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Keywords

ELECTRON CONTAMINATIONQ1

DOSE DISTRIBUTIONQ2

EYE TUMORQ1

COMPUTED TOMOGRAPHYQ3

Abstract

Background and Objective: Distribution of dose depends on the treatment field and the presence of multiple collimators sheet at the direction of the photons. The aim of this study is evaluating and comparing the effects of the presence and absence of electrons contamination on the DOSE DISTRIBUTION with the use of COMPUTED TOMOGRAPHY.Subjects and Methods: Varian linear accelerator (2100 C / D) was simulated with Primo and BEAMnrc codes for photon with 5.9 MV nominal energy. This study was done for 15 patients with eyes tumor undergoing single field photon therapy.Results: The maximum depth dose treatment volume aggregation in the presence and the absence of electrons contamination was occurred at 1.3cm3 and 2cm3, respectively.Differential dose volume histogram concluded 80% of total dose in the presence and absence of electrons, 90%±0.5 and 80%±2 of the eye volume covered, respectively.Conclusion: The main goal of radiation therapy is delivering the highest dose to the planning treatment volume and minimal radiation dose to organs at risk. In this case, the percent of the eye and treatment volume which taken 80% and 90% dose has 10% reduction and 5% increased by removing electrons contamination, respectively.

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APA: Copy

CHEGENI, NAHID, MIRKHAGHANI, FARZANEH, HOSSEINI, KHADIJEH, RAZMJOU GHALAEI, SASAN, MASKANI, REZA, & TALAII GOMARI, MARYAM. (2017). ELECTRONS CONTAMINATION EFFECT ON THE PHOTON DOSE DISTRIBUTION IN THE PLANNING TREATMENT FOR CANCEROUS PATIENTS. JUNDISHAPUR SCIENTIFIC MEDICAL JOURNAL, 16(1 ), 65-79. SID. https://sid.ir/paper/12958/en

Vancouver: Copy

CHEGENI NAHID, MIRKHAGHANI FARZANEH, HOSSEINI KHADIJEH, RAZMJOU GHALAEI SASAN, MASKANI REZA, TALAII GOMARI MARYAM. ELECTRONS CONTAMINATION EFFECT ON THE PHOTON DOSE DISTRIBUTION IN THE PLANNING TREATMENT FOR CANCEROUS PATIENTS. JUNDISHAPUR SCIENTIFIC MEDICAL JOURNAL[Internet]. 2017;16(1 ):65-79. Available from: https://sid.ir/paper/12958/en

IEEE: Copy

NAHID CHEGENI, FARZANEH MIRKHAGHANI, KHADIJEH HOSSEINI, SASAN RAZMJOU GHALAEI, REZA MASKANI, and MARYAM TALAII GOMARI, “ELECTRONS CONTAMINATION EFFECT ON THE PHOTON DOSE DISTRIBUTION IN THE PLANNING TREATMENT FOR CANCEROUS PATIENTS,” JUNDISHAPUR SCIENTIFIC MEDICAL JOURNAL, vol. 16, no. 1 , pp. 65–79, 2017, [Online]. Available: https://sid.ir/paper/12958/en

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