Technical Note: A fast inverse direct aperture optimization algorithm for volumetric‐modulated arc therapy

2020 ◽  
Vol 47 (4) ◽  
pp. 1558-1565
Author(s):  
Michael MacFarlane ◽  
Douglas A. Hoover ◽  
Eugene Wong ◽  
Jerry J. Battista ◽  
Jeff Z. Chen
Keyword(s):  
Optimization Algorithm ◽  
Volumetric Modulated Arc Therapy ◽  
Technical Note ◽  
Arc Therapy

Technical Note: Cardiac synchronized volumetric modulated arc therapy for stereotactic arrhythmia radioablation — Proof of principle

2020 ◽  
Vol 47 (8) ◽  
pp. 3567-3572
Author(s):  
Justin Poon ◽  
Kirpal Kohli ◽  
Marc W. Deyell ◽  
Devin Schellenberg ◽  
Stefan Reinsberg ◽  
...  
Keyword(s):  
Volumetric Modulated Arc Therapy ◽  
Technical Note ◽  
Arc Therapy ◽  
Proof Of Principle

scholarly journals The quality assurance of volumetric modulated arc therapy ( VMAT ) plans for early stage prostate cancer: a technical note

2014 ◽  
Vol 61 (4) ◽  
pp. 261-266 ◽  
Author(s):  
Craig A. Elith ◽  
Shane E. Dempsey ◽  
Fred Cao ◽  
Afrooz Farshadi ◽  
Helen M. Warren‐Forward
Keyword(s):  
Prostate Cancer ◽  
Quality Assurance ◽  
Early Stage ◽  
Volumetric Modulated Arc Therapy ◽  
Technical Note ◽  
Arc Therapy

On the role of the optimization algorithm of RapidArc® volumetric modulated arc therapy on plan quality and efficiency

2011 ◽  
Vol 38 (11) ◽  
pp. 5844-5856 ◽  
Author(s):  
Eugenio Vanetti ◽  
Giorgia Nicolini ◽  
Janne Nord ◽  
Jarkko Peltola ◽  
Alessandro Clivio ◽  
...  
Keyword(s):  
Optimization Algorithm ◽  
Volumetric Modulated Arc Therapy ◽  
Plan Quality ◽  
Arc Therapy

scholarly journals A Collimator Setting Optimization Algorithm for Dual-Arc Volumetric Modulated Arc Therapy in Pancreas Stereotactic Body Radiation Therapy

2019 ◽  
Vol 18 ◽  
pp. 153303381987076 ◽  
Author(s):  
Xinyi Li ◽  
Jackie Wu ◽  
Manisha Palta ◽  
You Zhang ◽  
Yang Sheng ◽  
...  
Keyword(s):  
At Risk ◽  
Radiation Therapy ◽  
Optimization Algorithm ◽  
Stereotactic Body Radiation Therapy ◽  
Organs At Risk ◽  
Volumetric Modulated Arc Therapy ◽  
Target Dose ◽  
Stereotactic Body Radiation ◽  
Complexity Score ◽  
Arc Therapy

Purpose: To optimize collimator setting to improve dosimetric quality of pancreas volumetric modulated arc therapy plan for stereotactic body radiation therapy. Materials and Methods: Fifty-five volumetric modulated arc therapy cases in stereotactic body radiation therapy of pancreas were retrospectively included in this study with internal review board approval. Different from the routine practice of initializing collimator settings with a template, the proposed algorithm simultaneously optimizes the collimator angles and jaw positions that are customized to the patient geometry. Specifically, this algorithm includes 2 key steps: (1) an iterative optimization algorithm via simulated annealing that generates a set of potential collimator settings from 39 cases with pancreas stereotactic body radiation therapy, and (2) a multi-leaf collimator modulation scoring system that makes the final decision of the optimal collimator settings (collimator angles and jaw positions) based on organs at risk sparing criteria. For validation, the other 16 cases with pancreas stereotactic body radiation therapy were analyzed. Two plans were generated for each validation case, with one plan optimized using the proposed algorithm ( Planopt) and the other plan with the template setting ( Planconv). Each plan was optimized with 2 full arcs and the same set of constraints for the same case. Dosimetric results were analyzed and compared, including target dose coverage, conformity, organs at risk maximum dose, and modulation complexity score. All results were tested by Wilcoxon signed rank tests, and the statistical significance level was set to .05. Results: Both plan groups had comparable target dose coverage and mean doses of all organs at risk. However, organs at risk (stomach, duodenum, large/small bowel) maximum dose sparing ( D0.1 cc and D0.03 cc) was improved in Planopt compared to Planconv. Planopt also showed lower modulation complexity score, which suggests better capability of handling complex shape and sparing organs at risk . Conclusions: The proposed collimator settings optimization algorithm successfully improved dosimetric performance for dual-arc pancreas volumetric modulated arc therapy plans in stereotactic body radiation therapy of pancreas. This algorithm has the capability of immediate clinical application.

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
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