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Title

Dosimetric Comparison of Collapsed Cone Convolution/Superposition and Anisotropic Analytic Algorithms in the Presence of Exaskin Bolus in Radiotherapy

مجله فیزیک پزشکی ایران، دوره: 18، شماره: 6
Year: 1400
COI: JR_IJMP-18-6_009
Language: EnglishView: 55
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Authors

Leila Mohammadian - Department of Medical Radiation Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
Mohsen Bakhshandeh - Radiation Technology Department, Allied Medical Sciences Faculty, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Elham Saeedzadeh - Department of Medical Radiation Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
Ali Jabbari Arfaee - Medical Physics Department, Radiotherapy and Oncology Center of Shohada-e-Tajrish Hospital, Tehran, Iran

Abstract:

Introduction: Bolus-type materials are needed in case of superficial lesions radiotherapy. This work determined the dosimetric accuracy of two commercial treatment planning systems (TPS) for calculating photon dose distribution in the presence of eXaSkin bolus. Material and Methods: Dose calculations were performed on collapsed cone convolution/superposition (CCC) and anisotropic analytical algorithm (AAA) using computed tomography (CT) images of heterogeneous CIRS phantom. EBT۳ film was used to obtain percentage depth dose (PDD) curves and gamma index was utilized to compare the accuracy of the two algorithms. The passing rate of the global gamma index with the passing criterion of ۳mm/۳% as the standard criterion was considered ۹۵% in this study. Results: Surface dose in PDD curves increased in the presence of ۰.۵ cm thick eXaSkin bolus. The passing rates of gamma index with standard passing criterion between AAA algorithm and EBT۳ film measurements without and with bolus were ۹۵% and ۹۵.۵%, respectively, while they were equal to ۹۶% and ۹۷.۵% for CCC algorithm. Conclusion: There was a good agreement in dose calculation between AAA and CCC algorithms. Furthermore, eXaSkin bolus increased the surface dose by a factor of ۲۵%.

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Paper COI Code

This Paper COI Code is JR_IJMP-18-6_009. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/1346474/

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Mohammadian, Leila and Bakhshandeh, Mohsen and Saeedzadeh, Elham and Jabbari Arfaee, Ali,1400,Dosimetric Comparison of Collapsed Cone Convolution/Superposition and Anisotropic Analytic Algorithms in the Presence of Exaskin Bolus in Radiotherapy,https://civilica.com/doc/1346474

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Scientometrics

The specifications of the publisher center of this Paper are as follows:
Type of center: Azad University
Paper count: 37,309
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