Results 121 to 130 of about 11,712 (165)

Simultaneous trajectory generation and volumetric modulated arc therapy optimization

Medical Physics, 2020
PurposeTrajectory‐based treatment planning involves the combination of a gantry‐couch trajectory with volumetric modulated arc therapy (VMAT) treatment plan optimization. This work presents the implementation of an optimization methodology that generates a trajectory simultaneous with treatment plan optimization (simTr‐VMAT).MethodsThe optimization ...
Joel, Mullins, Marc-André, Renaud, Monica, Serban, Jan, Seuntjens   +3 more
openaire   +2 more sources

Couch modelling for volumetric modulated arc therapy (VMAT)

Australasian Physical & Engineering Sciences in Medicine, 2017
The aim of this work was to investigate the impact of the accuracy of a certain couch model on the overall accuracy of the dose calculation. For this purpose two models of the Varian Exact Couch (Varian Medical Systems, Palo Alto, CA, USA) for use in the planning of volumetric modulated arc therapy (VMAT) were created in Monaco 5.1 (Elekta, Stockholm ...
Te-yu Chyou, Friedlieb Lorenz
openaire   +2 more sources

Intensity-modulated radiotherapy, coplanar volumetric-modulated arc, therapy, and noncoplanar volumetric-modulated arc therapy in, glioblastoma: A dosimetric comparison

Clinical Neurology and Neurosurgery, 2019
Advanced techniques such as volumetric-modulated arc therapy (VMAT) may reduce radiation damage and improve the quality of life for patients.We performed a study comparing dose distributions to the planning target volumes(PTVs) and other organs at risk (OARs) of intensity-modulated radiotherapy (IMRT),coplanar VMAT (coVMAT), and non-coplanar VMAT ...
Yong Hou, Yan Zhang, Zhen Liu, Lili Yv, Kun Liu, Xiufang Tian, Yajuan Lv   +6 more
openaire   +2 more sources

Single Arc Volumetric Modulated Arc Therapy of head and neck cancer

Radiotherapy and Oncology, 2010
The quality of Volumetric Modulated Arc Therapy (VMAT) plans is highly dependent on the performance of the optimization algorithm used. Recently new algorithms have become available which are capable of generating VMAT plans for Elekta accelerators. The VMAT algorithm in Pinnacle is named SmartArc and its capability to generate treatment plans for head
Bertelsen, Anders, Hansen, Christian Rønn, Johansen, Jørgen, Brink, Carsten   +3 more
openaire   +3 more sources

Treatment planning for volumetric modulated arc therapy

Medical Physics, 2009
Purpose: Volumetric modulated arc therapy (VMAT) is a specific type of intensity‐modulated radiation therapy (IMRT) in which the gantry speed, multileaf collimator (MLC) leaf position, and dose rate vary continuously during delivery. A treatment planning system for VMAT is presented.Methods: Arc control points are created uniformly throughout one or ...
openaire   +2 more sources

Choreographing Couch and Collimator in Volumetric Modulated Arc Therapy

International Journal of Radiation Oncology*Biology*Physics, 2011
To design and optimize trajectory-based, noncoplanar subarcs for volumetric modulated arc therapy (VMAT) deliverable on both Varian TrueBEAM system and traditional accelerators; and to investigate their potential advantages for treating central nervous system (CNS) tumors.To guide the computerized selection of beam trajectories consisting of ...
Yingli, Yang, Pengpeng, Zhang, Laura, Happersett, Jianping, Xiong, Jie, Yang, Maria, Chan, Kathryn, Beal, Gig, Mageras, Margie, Hunt   +8 more
openaire   +2 more sources

Volumetric modulated arc therapy: IMRT in a single gantry arc

Medical Physics, 2007
In this work a novel plan optimization platform is presented where treatment is delivered efficiently and accurately in a single dynamically modulated arc. Improvements in patient care achieved through image‐guided positioning and plan adaptation have resulted in an increase in overall treatment times.
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Improving plan quality for prostate volumetric-modulated arc therapy

Medical Dosimetry, 2017
We critically evaluated the quality and consistency of volumetric-modulated arc therapy (VMAT) prostate planning at a single institution to quantify objective measures for plan quality and establish clear guidelines for plan evaluation and quality assurance. A retrospective analysis was conducted on 34 plans generated on the Pinnacle3 version 9.4 and 9.
Wright, Katrina, Ferrari-Anderson, Janet, Barry, Tamara, Bernard, Anne, Brown, Elizabeth, Lehman, Margot, Pryor, David   +6 more
openaire   +3 more sources

Tangential Volumetric Modulated Arc Therapy for Locally Advanced Breast Cancer

Practical Radiation Oncology, 2022
Cardiovascular toxicity from breast radiation therapy (RT) is a concern to patients and providers. Herein, we present a cardiac-sparing strategy using tangential volumetric modulated arc therapy (tVMAT) in comparison with standard 3-dimensional conformal RT.
Pedro L. Zamora, Geoffrey Baran, Christopher Nagle, Ahmad Hammoud, Michael Dominello   +4 more
openaire   +2 more sources

The Stanford Volumetric Modulated Arc Therapy Total Body Irradiation Technique

Practical Radiation Oncology, 2022
In this article, we describe the technical aspects of the Stanford volumetric modulated arc therapy (VMAT) total body irradiation (TBI) technique, compare it with other VMAT-TBI techniques, and share our initial experience.From September 2019 to August 2021, 35 patients were treated with VMAT-TBI at our institution.
Nataliya Kovalchuk, Eric Simiele, Lawrie Skinner, Yong Yang, Nicole Howell, Jonathan Lewis, Caressa Hui, Erik Blomain, Richard T. Hoppe, Susan M. Hiniker   +9 more
openaire   +2 more sources