Evaluation of the dose calculation accuracy for small fields defined by jaw or MLC for AAA and Acuros XB algorithms

2016 ◽  
Vol 43 (10) ◽  
pp. 5685-5694 ◽  
Author(s):  
Antonella Fogliata ◽  
Francesca Lobefalo ◽  
Giacomo Reggiori ◽  
Antonella Stravato ◽  
Stefano Tomatis ◽  
...  
Keyword(s):  
Dose Calculation ◽  
Acuros Xb ◽  
Small Fields

SU-E-T-763: Acuros XB and AAA Dose Calculation Accuracy for Small Fields in RapidArc Treatments

2011 ◽  
Vol 38 (6Part22) ◽  
pp. 3666-3666
Author(s):  
A Fogliata ◽  
G Nicolini ◽  
A Clivio ◽  
E Vanetti ◽  
L Cozzi
Keyword(s):  
Dose Calculation ◽  
Acuros Xb ◽  
Small Fields

Accuracy of Acuros XB and AAA dose calculation for small fields with reference to RapidArc® stereotactic treatments

2011 ◽  
Vol 38 (11) ◽  
pp. 6228-6237 ◽  
Author(s):  
Antonella Fogliata ◽  
Giorgia Nicolini ◽  
Alessandro Clivio ◽  
Eugenio Vanetti ◽  
Luca Cozzi
Keyword(s):  
Dose Calculation ◽  
Acuros Xb ◽  
Small Fields

scholarly journals Dosimetric impact of Acuros XB deterministic radiation transport algorithm for heterogeneous dose calculation in lung cancer

2013 ◽  
Vol 40 (5) ◽  
pp. 051710 ◽  
Author(s):  
Tao Han ◽  
David Followill ◽  
Justin Mikell ◽  
Roman Repchak ◽  
Andrea Molineu ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Radiation Transport ◽  
Dose Calculation ◽  
Acuros Xb

Clinical validation of the Acuros XB photon dose calculation algorithm, a grid-based Boltzmann equation solver

2011 ◽  
Vol 51 (3) ◽  
pp. 376-385 ◽  
Author(s):  
Lone Hoffmann ◽  
Mai-Britt K. Jørgensen ◽  
Ludvig P. Muren ◽  
Jørgen B. B. Petersen
Keyword(s):  
Boltzmann Equation ◽  
Dose Calculation ◽  
Clinical Validation ◽  
Calculation Algorithm ◽  
Dose Calculation Algorithm ◽  
Acuros Xb ◽  
Photon Dose ◽  
Grid Based

scholarly journals Validation of the Acuros XB dose calculation algorithm versus Monte Carlo for clinical treatment plans

2018 ◽  
Vol 45 (8) ◽  
pp. 3909-3915 ◽  
Author(s):  
Lone Hoffmann ◽  
Markus Alber ◽  
Matthias Söhn ◽  
Ulrik Vindelev Elstrøm
Keyword(s):  
Monte Carlo ◽  
Dose Calculation ◽  
Clinical Treatment ◽  
Calculation Algorithm ◽  
Dose Calculation Algorithm ◽  
Acuros Xb ◽  
Treatment Plans

SU-E-T-564: Validation of Photon Dose Calculation Using Mobius3D System Compared to AAA and Acuros XB Systems

2013 ◽  
Vol 40 (6Part19) ◽  
pp. 335-335 ◽  
Author(s):  
L Majithia ◽  
D DiCostanzo ◽  
M Weldon ◽  
N Gupta ◽  
Y Rong
Keyword(s):  
Dose Calculation ◽  
Acuros Xb ◽  
Photon Dose

Evaluating small field dosimetry with the Acuros XB (AXB) and analytical anisotropic algorithm (AAA) dose calculation algorithms in the eclipse treatment planning system

2019 ◽  
Vol 18 (4) ◽  
pp. 353-364
Author(s):  
Sepideh Behinaein ◽  
Ernest Osei ◽  
Johnson Darko ◽  
Paule Charland ◽  
Dylan Bassi
Keyword(s):  
Treatment Planning ◽  
Planning System ◽  
Treatment Planning System ◽  
Patient Specific ◽  
Average Dose ◽  
Water Phantom ◽  
Acuros Xb ◽  
Small Fields ◽  
Dose Measurements ◽  
The Brain

AbstractBackground:An increasing number of external beam treatment modalities including intensity modulated radiation therapy, volumetric modulated arc therapy (VMAT) and stereotactic radiosurgery uses very small fields for treatment planning and delivery. However, there are major challenges in small photon field dosimetry, due to the partial occlusion of the direct photon beam source’s view from the measurement point, lack of lateral charged particle equilibrium, steep dose-rate gradient and volume averaging effect of the detector response and variation of the energy fluence in the lateral direction of the beam. Therefore, experimental measurements of dosimetric parameters such as percent depth doses (PDDs), beam profiles and relative output factors (ROFs) for small fields continue to be a challenge.Materials and Methods:In this study, we used a homogeneous water phantom and the heterogeneous anthropomorphic stereotactic end-to-end verification (STEEV) head phantom for all dose measurements and calculations. PDDs, lateral dose profiles and ROFs were calculated in the Eclipse Treatment Planning System version 13·6 using the Acuros XB (AXB) and the analytical anisotropic algorithms (AAAs) in a homogenous water phantom. Monte Carlo (MC) simulations and measurements using the Exradin W1 Scintillator were also accomplished for four photon energies: 6 MV, 6FFF, 10 MV and 10FFF. Two VMAT treatment plans were generated for two different targets: one located in the brain and the other in the neck (close to the trachea) in the head phantom (CIRS, Norfolk, VA, USA). A Varian Truebeam linear accelerator (Varian, Palo Alto, CA, USA) was used for all treatment deliveries. Calculated results with AXB and AAA were compared with MC simulations and measurements.Results:The average difference of PDDs between W1 Exradin Scintillator measurements and MC simulations, AAA and AXB algorithm calculations were 1·2, 2·4 and 3·2%, respectively, for all field sizes and energies. AXB and AAA showed differences in ROF of about 0·3 and 2·9%, respectively, compared with W1 Exradin Scintillator measured values. For the target located in the brain in the head phantom, the average dose difference between W1 Exradin Scintillator and the MC simulations, AAA and AXB were 0·2, 3·2 and 2·7%, respectively, for all field sizes. Similarly, for the target located in the neck, the respective dose differences were 3·8, 5·7 and 3·5%.Conclusion:In this study, we compared dosimetric parameters such as PDD, beam profile and ROFs in water phantom and isocenter point dose measurements in an anthropomorphic head phantom representing a patient. We observed that measurements using the W1 Exradin scintillator agreed well with MC simulations and can be used efficiently for dosimetric parameters such as PDDs and dose profiles and patient-specific quality assurance measurements for small fields. In both homogenous and heterogeneous media, the AXB algorithm dose prediction agrees well with MC and measurements and was found to be superior to the AAA algorithm.

Sign in / Sign up

Export Citation Format

Share Document