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Title: SU-F-T-431: Dosimetric Validation of Acuros XB Algorithm for Photon Dose Calculation in Water

Abstract

Purpose: To validate the Acuros XB algorithm implemented in Eclipse Treatment planning system version 11 (Varian Medical System, Inc., Palo Alto, CA, USA) for photon dose calculation. Methods: Acuros XB is a Linear Boltzmann transport equation (LBTE) solver that solves LBTE equation explicitly and gives result equivalent to Monte Carlo. 6MV photon beam from Varian Clinac-iX (2300CD) was used for dosimetric validation of Acuros XB. Percentage depth dose (PDD) and profiles (at dmax, 5, 10, 20 and 30 cm) measurements were performed in water for field size ranging from 2×2,4×4, 6×6, 10×10, 20×20, 30×30 and 40×40 cm{sup 2}. Acuros XB results were compared against measurements and anisotropic analytical algorithm (AAA) algorithm. Results: Acuros XB result shows good agreement with measurements, and were comparable to AAA algorithm. Result for PDD and profiles shows less than one percent difference from measurements, and from calculated PDD and profiles by AAA algorithm for all field size. TPS calculated Gamma error histogram values, average gamma errors in PDD curves before dmax and after dmax were 0.28, 0.15 for Acuros XB and 0.24, 0.17 for AAA respectively, average gamma error in profile curves in central region, penumbra region and outside field region were 0.17, 0.21, 0.42more » for Acuros XB and 0.10, 0.22, 0.35 for AAA respectively. Conclusion: The dosimetric validation of Acuros XB algorithms in water medium was satisfactory. Acuros XB algorithm has potential to perform photon dose calculation with high accuracy, which is more desirable for modern radiotherapy environment.« less

Authors:
 [1]; ;  [2]; ; ;  [3]
  1. Rajiv Gandhi Cancer Institute & Research Center, New Delhi, Delhi (India)
  2. Bundelkhand Institute of Engineering & Technology, Jhansi, Uttar pradesh (India)
  3. Rajiv Gandhi Cancer Institute and Research Centre, New Delhi, Delhi (India)
Publication Date:
OSTI Identifier:
22649024
Resource Type:
Journal Article
Journal Name:
Medical Physics
Additional Journal Information:
Journal Volume: 43; Journal Issue: 6; Other Information: (c) 2016 American Association of Physicists in Medicine; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-2405
Country of Publication:
United States
Language:
English
Subject:
60 APPLIED LIFE SCIENCES; ALGORITHMS; DEPTH DOSE DISTRIBUTIONS; ERRORS; MONTE CARLO METHOD; PHOTON BEAMS; VALIDATION; WATER

Citation Formats

Kumar, L, Yadav, G, Kishore, V, Bhushan, M, Samuvel, K, and Suhail, M. SU-F-T-431: Dosimetric Validation of Acuros XB Algorithm for Photon Dose Calculation in Water. United States: N. p., 2016. Web. doi:10.1118/1.4956616.
Kumar, L, Yadav, G, Kishore, V, Bhushan, M, Samuvel, K, & Suhail, M. SU-F-T-431: Dosimetric Validation of Acuros XB Algorithm for Photon Dose Calculation in Water. United States. https://doi.org/10.1118/1.4956616
Kumar, L, Yadav, G, Kishore, V, Bhushan, M, Samuvel, K, and Suhail, M. 2016. "SU-F-T-431: Dosimetric Validation of Acuros XB Algorithm for Photon Dose Calculation in Water". United States. https://doi.org/10.1118/1.4956616.
@article{osti_22649024,
title = {SU-F-T-431: Dosimetric Validation of Acuros XB Algorithm for Photon Dose Calculation in Water},
author = {Kumar, L and Yadav, G and Kishore, V and Bhushan, M and Samuvel, K and Suhail, M},
abstractNote = {Purpose: To validate the Acuros XB algorithm implemented in Eclipse Treatment planning system version 11 (Varian Medical System, Inc., Palo Alto, CA, USA) for photon dose calculation. Methods: Acuros XB is a Linear Boltzmann transport equation (LBTE) solver that solves LBTE equation explicitly and gives result equivalent to Monte Carlo. 6MV photon beam from Varian Clinac-iX (2300CD) was used for dosimetric validation of Acuros XB. Percentage depth dose (PDD) and profiles (at dmax, 5, 10, 20 and 30 cm) measurements were performed in water for field size ranging from 2×2,4×4, 6×6, 10×10, 20×20, 30×30 and 40×40 cm{sup 2}. Acuros XB results were compared against measurements and anisotropic analytical algorithm (AAA) algorithm. Results: Acuros XB result shows good agreement with measurements, and were comparable to AAA algorithm. Result for PDD and profiles shows less than one percent difference from measurements, and from calculated PDD and profiles by AAA algorithm for all field size. TPS calculated Gamma error histogram values, average gamma errors in PDD curves before dmax and after dmax were 0.28, 0.15 for Acuros XB and 0.24, 0.17 for AAA respectively, average gamma error in profile curves in central region, penumbra region and outside field region were 0.17, 0.21, 0.42 for Acuros XB and 0.10, 0.22, 0.35 for AAA respectively. Conclusion: The dosimetric validation of Acuros XB algorithms in water medium was satisfactory. Acuros XB algorithm has potential to perform photon dose calculation with high accuracy, which is more desirable for modern radiotherapy environment.},
doi = {10.1118/1.4956616},
url = {https://www.osti.gov/biblio/22649024}, journal = {Medical Physics},
issn = {0094-2405},
number = 6,
volume = 43,
place = {United States},
year = {Wed Jun 15 00:00:00 EDT 2016},
month = {Wed Jun 15 00:00:00 EDT 2016}
}