scholarly journals Pretreatment quality assurance of volumetric modulated arc therapy on patient CT scan using indirect 3D dosimetry system

2014 ◽  
Vol 2 (4) ◽  
pp. 020416 ◽  
Author(s):  
Shanmugam Thirumalai Swamy ◽  
Chandrasekaran Anuradha ◽  
Murugesan Kathirvel ◽  
Gandhi Arun ◽  
Shanmuga Subramanian
Keyword(s):  
Quality Assurance ◽  
Ct Scan ◽  
Volumetric Modulated Arc Therapy ◽  
3D Dosimetry ◽  
Arc Therapy ◽  
Dosimetry System

SU-E-T-188: Patient Specific Quality Assurance for Volumetric Modulated Arc Therapy (RapidArc) Using COMPASS 3D Dosimetry System

2011 ◽  
Vol 38 (6Part13) ◽  
pp. 3529-3529
Author(s):  
G Arun ◽  
V Shanmuga Subramanian ◽  
S Thirumalai Swamy ◽  
M Kathirvel ◽  
K Ramalingam ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Volumetric Modulated Arc Therapy ◽  
Patient Specific ◽  
3D Dosimetry ◽  
Arc Therapy ◽  
Dosimetry System

scholarly journals Computational model of a 3D dosimetry system - ArcCHECK®

2019 ◽  
Vol 7 (2A) ◽  
Author(s):  
Amanda Cristina Mazer ◽  
Marcos Vinicius Nakaoka Nakandakari ◽  
Victor Augusto Bertotti Ribeiro ◽  
Paulo De Tarso Dalledone Siqueira ◽  
Julian Marco Barbosa Shorto ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Quality Assurance ◽  
Computational Models ◽  
Radiation Transport ◽  
Volumetric Modulated Arc Therapy ◽  
Planning System ◽  
Treatment Planning System ◽  
3D Dosimetry ◽  
Arc Therapy ◽  
Dosimetry System

Ionizing radiation therapies have been improving over the years, becoming more specific for each patient. Thereby, as the treatment planning system (TPS) complexities increases, the quality assurance (QA) methods have to be in constant evolution. One of the techniques that demand great complexity is the Volumetric Modulated Arc Therapy (VMAT), and one possible way to VMAT commissioning is using 3D dosimetry systems. Recently a new 3D dosimetry system called ArcCHECK had been developed and commercialized mainly for VMAT quality assurance. It is water-equivalent and composed by an array of 1386 diodes arranged in a helical pattern. Since simulation methods, like Monte Carlo method, ensure highly accurate results, MCNP (A General Monte Carlo N-Particle Transport Code System) is totally reliable for problems that involve radiation transport. This work presents two computational models for Monte Carlo simulations to predict detection responses in the QA procedure using the ArcCHECK. The computational models were validated comparing the system responses obtained from MCNP6 simulations against measured responses due to a 6 MeV clinical photon beam from a Linear Accelerator. 2D dose maps were reported here with good agreement between simulated and measured values.

scholarly journals PD-0229: Evaluation of gated volumetric modulated arc therapy using COMPASS 3D dosimetry system

2013 ◽  
Vol 106 ◽  
pp. S89
Author(s):  
S. Thirumalai Swamy ◽  
V.S. Subramanian ◽  
G. Arun ◽  
M. Kathirvel ◽  
C. Anu Radha ◽  
...  
Keyword(s):  
Volumetric Modulated Arc Therapy ◽  
3D Dosimetry ◽  
Arc Therapy ◽  
Dosimetry System

scholarly journals Analysis of direct clinical consequences of MLC positional errors in volumetric-modulated arc therapy using 3D dosimetry system

2015 ◽  
Vol 16 (5) ◽  
pp. 296-305 ◽  
Author(s):  
Karthikeyan Nithiyanantham ◽  
Ganesh K. Mani ◽  
Vikraman Subramani ◽  
Lutz Mueller ◽  
Karrthick K. Palaniappan ◽  
...  
Keyword(s):  
Volumetric Modulated Arc Therapy ◽  
3D Dosimetry ◽  
Arc Therapy ◽  
Clinical Consequences ◽  
Dosimetry System

Quality assurance of volumetric modulated arc therapy using Elekta Synergy

2009 ◽  
pp. 1-5 ◽  
Author(s):  
Akihiro Haga ◽  
Keiichi Nakagawa ◽  
Kenshiro Shiraishi ◽  
Saori Itoh ◽  
Atsuro Terahara ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Volumetric Modulated Arc Therapy ◽  
Arc Therapy

scholarly journals Physical dosimetry of volumetric modulated arc therapy (VMAT) using EPID and 2D array for quality assurance

2018 ◽  
Vol 49 (2) ◽  
pp. 477-484
Author(s):  
Ismail E. Mohamed ◽  
Ayman G. Ibrahim ◽  
Hamdy M. Zidan ◽  
Hesham S. El-Bahkiry ◽  
Adel Y. El-sahragti
Keyword(s):  
Quality Assurance ◽  
Volumetric Modulated Arc Therapy ◽  
Arc Therapy ◽  
2D Array

scholarly journals Positional Accuracy and Quality Assurance of Backup JAWs Required for Volumetric Modulated Arc Therapy

2012 ◽  
Vol 68 (11) ◽  
pp. 1486-1491
Author(s):  
Daisaku Tatsumi ◽  
Ryosei Nakada ◽  
Akinori Ienaga ◽  
Akane Yomoda ◽  
Makoto Inoue ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Volumetric Modulated Arc Therapy ◽  
Positional Accuracy ◽  
Arc Therapy

Quality assurance of volumetric-modulated arc therapy head and neck cancer treatment using PRESAGE® dosimeter

2018 ◽  
Vol 17 (4) ◽  
pp. 441-446 ◽  
Author(s):  
Jalil ur Rehman ◽  
Muhammad Isa ◽  
Nisar Ahmad ◽  
H. M. Noor ul Huda Khan Asghar ◽  
Zaheer A. Gilani ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Cancer Treatment ◽  
Head And Neck ◽  
Treatment Planning ◽  
Volumetric Modulated Arc Therapy ◽  
Planning System ◽  
Treatment Planning System ◽  
Ct Scans ◽  
Arc Therapy ◽  
Calculated Dose

AbstractBackgroundAccurate three-dimensional dosimetry is essential in modern radiotherapy techniques such as volumetric-modulated arc therapy (VMAT) and intensity-modulated radiation therapy (IMRT). In this research work, the PRESAGE® dosimeter was used as quality assurance (QA) tool for VMAT planning for head and neck (H&N) cancer.Material and methodComputer tomography (CT) scans of an Image Radiation Oncology Core (IROC) H&N anthropomorphic phantom with both IROC standard insert and PRESAGE® insert were acquired separately. Both CT scans were imported into the Pinnacle (9.4 version) TPS for treatment planning, where the structures [planning target volume (PTV), organs at risk) and thermoluminescent detectors (TLDs) were manually contoured and used to optimise a VMAT plan. Treatment planning was done using VMAT (dual arc: 182°–178°, 178°–182°). Beam profile comparisons and gamma analysis were used to quantify agreement with film, PRESAGE® measurement and treatment planning system (TPS) calculated dose distribution.ResultsThe average ratio of TLD measured to calculated doses at the four PTV locations in the H&N phantom were between 0·95 to 0·99 for all three VMAT deliveries. Dose profiles were taken along the left–right, the anterior–posterior and superior–inferior axes, and good agreement was found between the PRESAGE® and Pinnacle profile. The mean value of gamma results for three VMAT deliveries in axial and sagittal planes were found to be 94·24 and 93·16% when compared with film and Pinnacle, respectively. The average values comparing the PRESAGE® results and dose values calculated on Pinnacle were observed to be 95·29 and 94·38% in the said planes, respectively, using a 5%/3 mm gamma criteria.ConclusionThe PRESAGE® dose measurements and calculated dose of pinnacle show reasonable agreement in both axial and sagittal planes for complex dual arc VMAT treatment plans. In general, the PRESAGE® dosimeter is found to be a feasible QA tool of VMAT plan for H&N cancer treatment.

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