Results 201 to 210 of about 15,485 (236)

MO-A-211-01: Volumetric Modulated Arc Therapy

Medical Physics, 2012
Volumetric Modulated Arc Therapy (VMAT) is a rotational approach to the delivery of intensity modulated radiation therapy (IMRT) that can be delivered on a conventional linear accelerator. VMAT combines the dosimetric advantages of rotational delivery with the dose painting capabilities of IMRT.
D, Shepard, R, Popple
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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 ...
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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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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
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Intensity-Modulated Radiation Therapy and Volumetric-Modulated Arc Therapy

2019
Due to its dosimetric superiority relative to traditional techniques, intensity-modulated radiation therapy (IMRT) has become increasingly common in the management of gynecologic malignancies. The increased conformality of the dose distribution delivered via IMRT permits the delivery of an effective dose to irregularly shaped targets while ...
O. Lee Burnett, Xun Jia, Elizabeth A. Kidd, Ann H. Klopp   +3 more
openaire   +1 more source

Dosimetric comparison of hybrid volumetric-modulated arc therapy, volumetric-modulated arc therapy, and intensity-modulated radiation therapy for left-sided early breast cancer

Medical Dosimetry, 2015
To compare the dosimetric performance of 3 different treatment techniques: hybrid volumetric-modulated arc therapy (hybrid-VMAT), pure-VMAT, and fixed-field intensity-modulated radiation therapy (F-IMRT) for whole-breast irradiation of left-sided early breast cancer.
Jia-Fu, Lin, Dah-Cherng, Yeh, Hui-Ling, Yeh, Chen-Fa, Chang, Jin-Ching, Lin   +4 more
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An algorithm to calculate a collapsed arc dose matrix in volumetric modulated arc therapy

Medical Physics, 2013
Purpose:The delivery of volumetric modulated arc therapy (VMAT) is more complex than other conformal radiotherapy techniques. In this work, the authors present the feasibility of performing routine verification of VMAT delivery using a dose matrix measured by a gantry mounted 2D ion chamber array and corresponding dose matrix calculated by an inhouse ...
Arumugam, Sankar, Xing, Aitang, Jameson, Michael, Holloway, Lois   +3 more
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Use of volumetric-modulated arc therapy for treatment of Hodgkin lymphoma

Medical Dosimetry, 2013
To evaluate volumetric-modulated arc therapy (VMAT) for treatment of Hodgkin lymphoma (HL) in patients where conventional radiotherapy was not deliverable. A planning computed tomography (CT) scan was acquired for a twelve-year-old boy with Stage IIIB nodular sclerosing HL postchemotherapy with positive positron emission tomography scan.
Young K, Lee, James L, Bedford, Mary, Taj, Frank H, Saran   +3 more
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Intensity-modulated radiotherapy and volumetric-modulated arc therapy

2017
Modulated radiotherapy treatments such as intensity-modulated radiotherapy (IMRT) and volumetric-modulated arc therapy (VMAT, sometimes called IMAT) involve the use of moving multileaf collimator (MLC) leaves to deliver beams with a spatially varying intensity.
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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   +4 more sources