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Dosimetric Accuracy Comparison Between Acurose Xb, Aaa and Pbc Dose Calculation Algorithms in Eclipsetm Tps Using a Heterogeneous Phantom Publisher



Rooshenas A1 ; Gholami S2 ; Barough MS1 ; Mohammadi E2
Authors

Source: Frontiers in Biomedical Technologies Published:2019


Abstract

Purpose: The aim of this study is to compare the accuracy of different algorithms in EclipseTM Treatment Planning System (TPS) using a heterogeneous phantom. Materials and Methods: The method is based on the International Atomic Energy Agency's TEC-DOC 1583 report. The chest phantom of CIRS, PTW30010 ionization chamber and an electrometer (PTW, Freiburg) were used for the measurements. Three ACUROSE XB (AXB), Analytical Anisotropic Algorithm (AAA) and Pencil Beam Convolution (PBC) dose calculation algorithms available in Eclipse TM TPS were considered in this study. Results: Based on the measurements, the maximum differences between calculated dose by TPS and measured dose in TEC-DOC 1583 tests were 2.5%, 8.6% and 16.1% for the AXB, AAA and PBC algorithms in heterogeneous media, respectively. Conclusion: The Acuros XB algorithm has superior accuracy to predict the dose distribution in the heterogeneous tissues such as lung compared to AAA and PBC algorithms. © Tehran University of Medical Sciences
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