Results 11 to 20 of about 14,390 (207)

Dosimetric effects of sectional adjustments of collimator angles on volumetric modulated arc therapy for irregularly-shaped targets. [PDF]

PLoS ONE, 2017
To calculate an optimal collimator angle at each of sectional arcs in a full-arc volumetric modulated arc therapy (VMAT) plan and evaluate dosimetric quality of these VMAT plans comparing full-arc VMAT plans with a fixed collimator angle.Seventeen ...
Beom Seok Ahn, So-Yeon Park, Jong Min Park, Chang Heon Choi, Minsoo Chun, Jung-In Kim   +5 more
doaj   +1 more source

Automatic feathering algorithm for VMAT craniospinal irradiation: a comprehensive comparison with other VMAT planning strategies [PDF]

Physica Medica, 2021
In craniospinal irradiation, field matching is very sensitive to intrafraction positional uncertainties in cranio-caudal direction, which could lead to severe overdoses/underdoses inside the planning target volume. During the last decade, significant efforts were made to develop volumetric-modulated arc therapy strategies, which were less sensitive to ...
Michele, Maddalo, Giovanna, Benecchi, Luisa, Altabella, Caterina, Ghetti, Nunziata, D'Abbiero   +4 more
openaire   +2 more sources

Dosimetric Comparison between High Dose Rate Brachytherapy Boost and Volumetric Arc Therapy Boost in Locally Advanced Cancer Cervix

Asian Journal of Oncology, 2021
Concurrent chemoradiotherapy is considered the standard treatment for the locally advanced cancer cervix (LACC). Radiotherapy is commonly administered by a three-dimensional conformal radiotherapy (3DCRT) approach followed by brachytherapy (BT).
Hanady Hegazy, Neamat Hegazy, Maher Soliman, Amr Elsaid   +3 more
doaj   +1 more source

Feasibility of 3D tracking and adaptation of VMAT based on VMAT-CT

Radiotherapy and Oncology, 2020
Local computed tomography (CT) reconstruction is achievable with portal images acquired during volumetric-modulated arc therapy (VMAT) delivery and was named as VMAT-CT. However, the application of VMAT-CT is limited because it has limited field of view and no density information.
Xiaodong, Zhao, Rui, Zhang
openaire   +3 more sources

Impact of Multi-criteria Optimization on 6-MV Flattening Filter-Free Volumetric Modulated Arc Therapy for Craniospinal Irradiation [PDF]

Iranian Journal of Medical Physics, 2020
Introduction: Volumetric modulated arc therapy (VMAT) is an advanced technique used for radiotherapy treatment using different optimization modes. The present study aimed to evaluate Multi-criteria Optimization (MCO) influence on VMAT for Craniospinal ...
Mohandass P, KHANNA D, Selvaganapathi A, Nishaanth B, Saravanan C, Thiyagaraj T, Narendra Kumar Bhalla, abhishek Puri, Blessy Mohandass   +8 more
doaj   +1 more source

VMAT testing for an Elekta accelerator [PDF]

Journal of Applied Clinical Medical Physics, 2012
Volumetric‐modulated arc therapy (VMAT) has been shown to be able to deliver plans equivalent to intensity‐modulated radiation therapy (IMRT) in a fraction of the treatment time. This improvement is important for patient immobilization/ localization compliance due to comfort and treatment duration, as well as patient throughput.
Kaurin, Darryl G.L., Sweeney, Larry E., Marshall, Edward I., Mahendra, Saikanth   +3 more
openaire   +2 more sources

Hyperarc Vmat and Vmat planning for stereotactic radiosurgery in multiple brain metastases

Journal of Radiation Research and Applied Sciences, 2023
Automated treatment planning systems are available for linear accelerator (LINAC) based single and more isocenter multitarget stereotactic radiosurgery (SRS) of brain metastases. HyperArc Volumetric Modulated Arc Therapy (HA-VMAT) is a relatively new isocentric Volumetric Modulated Arc Therapy (VMAT) technique developed specifically for non-coplanar ...
Çelen, Yonca Yahşi, Dinç, Özcan, Arslan, Nazmiye Deniz, Dağ, Sedef, Doğan, Ayşe Kutluhan, Günenç, Senar   +5 more
openaire   +1 more source

Transition from 3D conformal to modern modulated craniospinal radiotherapy

South African Journal of Oncology, 2022
Background: Achieving optimal tumour coverage during craniospinal irradiation (CSI) is a challenge. Whilst several critical organs are at risk of radiation-induced toxicity, if target volume structures like the cribriform plate receive less than 95% of ...
Hamida Fakira, Thurandrie Naiker, Brendon Smith, Annemari Groenewald   +3 more
doaj   +1 more source

Proton beam therapy in paediatric cancer: Anticipating the opening of the Australian Bragg Centre for Proton Therapy and Research

Journal of Medical Imaging and Radiation Oncology, EarlyView., 2023
Summary Proton Beam Therapy (PBT) has the potential to improve paediatric cancer care by reducing radiation exposure and thus long‐term toxicities. Ethical concerns and debates surrounding the treatment, such as eligibility and accessibility, are ongoing in Australia. The Australian Bragg Centre for Proton Therapy and Research (ABCPTR) (named after Sir
Jeremy Khong, Hui Tee, Peter Gorayski, Hien Le, Michael Penniment, Sophie Jessop, Jordan Hansford, Melanie Penfold, Julia Green, Kelly Skelton, Frank Saran   +10 more
wiley   +1 more source

The Advantage of Proton Therapy in Hypothalamic-Pituitary Axis and Hippocampus Avoidance for Children with Medulloblastoma [PDF]

International Journal of Particle Therapy, 2021
Purpose: Craniospinal irradiation (CSI) improves clinical outcomes at the cost of long-term neuroendocrine and cognitive sequelae. The purpose of this pilot study was to determine whether hypothalamic-pituitary axis (HPA) and hippocampus avoidance (HPA ...
Saif Aljabab, MBBS, FRCPC, Shushan Rana, MD, Shadonna Maes, CMD, Avril O’Ryan-Blair, CMD, Jackie Castro, CMD, Jack Zheng, MD, Lia M. Halasz, MD, Phillip J. Taddei, PhD   +7 more
doaj   +1 more source