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Information Journal Paper

Title

Accuracy Evaluation of EPL and ETAR Algorithms in the Treatment Planning Systems using CIRS Thorax Phantom

Pages

  483-496

Abstract

 Background: It is recommended for each set of radiation data and algorithm that subtle deliberation is done regarding dose calculation accuracy. Knowing the errors in dose calculation for each treatment plan will result in an accurate estimate of the actual dose achieved by the tumor. Objective: This study aims to evaluate the equivalent path length (EPL) and equivalent tissue air ratio (ETAR) Algorithms in radiation dose calculation. Material and Methods: In this experimental study, the TEC-DOC 1583 guideline was used. Measurements and calculations were obtained for each algorithm at specific points in thorax CIRS phantom for 6 and 18 MVs and results were compared. Results: In the EPL, calculations were in agreement with measurements for 27 points and differences between them ranged from 0. 1% to 10. 4% at 6 MV. The calculations were in agreement with measurements for 21 points and differences between them ranged from 0. 4% to 13% at 18 MV. In ETAR, calculations were also in consistent with measurements for 21 points, and differences between them ranged from 0. 1% to 9% at 6 MV. Moreover, for 18 MV, the calculations were in agreement with measurements for 17 points and differences between them ranged from 0% to 11%. Conclusion: For the EPL algorithm, more dose points were in consistent with acceptance criteria. The errors in the ETAR were 1% to 2% less than the EPL. The greatest calculation error occurs in low-density Lung Tissue with Inhomogeneities or in high-density bone. Errors were larger in shallow depths. The error in higher energy was more than low energy beam.

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    APA: Copy

    ZABIHZADEH, MANSOUR, RAHIMI, AZIZOLLAH, Shahbazian, Hodjatollah, RAZMJOO, SASAN, & Mahdavi, Seyyed Rabie. (2021). Accuracy Evaluation of EPL and ETAR Algorithms in the Treatment Planning Systems using CIRS Thorax Phantom. JOURNAL OF BIOMEDICAL PHYSICS AND ENGINEERING, 11(4), 483-496. SID. https://sid.ir/paper/698137/en

    Vancouver: Copy

    ZABIHZADEH MANSOUR, RAHIMI AZIZOLLAH, Shahbazian Hodjatollah, RAZMJOO SASAN, Mahdavi Seyyed Rabie. Accuracy Evaluation of EPL and ETAR Algorithms in the Treatment Planning Systems using CIRS Thorax Phantom. JOURNAL OF BIOMEDICAL PHYSICS AND ENGINEERING[Internet]. 2021;11(4):483-496. Available from: https://sid.ir/paper/698137/en

    IEEE: Copy

    MANSOUR ZABIHZADEH, AZIZOLLAH RAHIMI, Hodjatollah Shahbazian, SASAN RAZMJOO, and Seyyed Rabie Mahdavi, “Accuracy Evaluation of EPL and ETAR Algorithms in the Treatment Planning Systems using CIRS Thorax Phantom,” JOURNAL OF BIOMEDICAL PHYSICS AND ENGINEERING, vol. 11, no. 4, pp. 483–496, 2021, [Online]. Available: https://sid.ir/paper/698137/en

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