Results 21 to 30 of about 16,180 (297)

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 ...
Caterina Ghetti, Nunziata D'Abbiero, Giovanna Benecchi, Michele Maddalo, Luisa Altabella   +4 more
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

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

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.
Rui Zhang, Rui Zhang, Xiaodong Zhao
openaire   +4 more sources

Fully automated volumetric modulated arc therapy planning for locally advanced rectal cancer: feasibility and efficiency

Radiation Oncology, 2023
Background Volumetric modulated arc therapy (VMAT) for locally advanced rectal cancer (LARC) has emerged as a promising technique, but the planning process can be time-consuming and dependent on planner expertise.
Kouta Hirotaki, Kento Tomizawa, Shunsuke Moriya, Hajime Oyoshi, Vijay Raturi, Masashi Ito, Takeji Sakae   +6 more
doaj   +1 more source

Planning study of flattening filter free beams for volumetric modulated arc therapy in squamous cell carcinoma of the scalp. [PDF]

PLoS ONE, 2014
Flattening filter free (FFF) beams show the potential for a higher dose rate and lower peripheral dose. We investigated the planning study of FFF beams with their role for volumetric modulated arc therapy (VMAT) in squamous cell carcinoma of the scalp ...
Youqun Lai, Liwan Shi, Qin Lin, Lirong Fu, Huiming Ha   +4 more
doaj   +1 more source

Meta-optimization for Fully Automated Radiation Therapy Treatment Planning [PDF]

, 2021
Objective: Radiation therapy treatment planning is a time-consuming process involving iterative adjustments of hyperparameters. To automate the treatment planning process, we propose a meta-optimization framework, called MetaPlanner (MP). Methods: Our MP algorithm automates planning by performing optimization of treatment planning hyperparameters.
arxiv   +1 more source

Cardiac Dose Control and Optimization Strategy for Left Breast Cancer Radiotherapy With Non-Uniform VMAT Technology

Technology in Cancer Research & Treatment, 2021
Purpose: A novel in-house technology “Non-Uniform VMAT (NU-VMAT)” was developed for automated cardiac dose reduction and treatment planning optimization in the left breast radiotherapy.
Jianjian Qiu PhD, Shujun Zhang MS, Bo Lv MS, Xiangpeng Zheng MD   +3 more
doaj   +1 more source

A dosimetric comparison of volumetric modulated arc therapy with three-dimensional conformal radiotherapy in the treatment of cervical cancer

South African Journal of Oncology, 2021
Background: External beam radiotherapy (EBRT) is essential in the management of locally advanced cervical cancer (LACC). Volumetric modulated arc therapy (VMAT) is thought to achieve higher conformity to the planned target volume (PTV) and better sparing
Visham Bhagaloo, Nazreen Bhim, Alistair Hunter, Nazia Fakie   +3 more
doaj   +1 more source

Volumetric modulated arc therapy (VMAT) for hippocampal-avoidance whole brain radiation therapy: planning comparison with Dual-arc and Split-arc partial-field techniques

Radiation Oncology, 2020
Background Although whole brain radiation therapy (WBRT) provides palliation and prophylaxis, reduces local recurrence probability and improves overall survival, it is evident that WBRT is associated with neurocognitive deficits due to radiation induced ...
Adams Hei Long Yuen, Po Man Wu, Alex Kai Leung Li, Philip Chung Yin Mak   +3 more
doaj   +1 more source