Results 71 to 80 of about 43,525 (332)

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

Evaluating AAPM‐TG‐218 recommendations: Gamma index tolerance and action limits in IMRT and VMAT quality assurance using SunCHECK

Journal of Applied Clinical Medical Physics
Purpose This study aimed to improve the safety and accuracy of radiotherapy by establishing tolerance (TL) and action (AL) limits for the gamma index in patient‐specific quality assurance (PSQA) for intensity‐modulated radiation therapy (IMRT) and ...
Jia Deng, ShengYan Liu, Yun Huang, Xiuquan Li, Xiangyang Wu   +4 more
semanticscholar   +1 more source

Evaluation of dosimetric effect caused by slowing with multi-leaf collimator (MLC) leaves for volumetric modulated arc therapy (VMAT)

Radiology and Oncology, 2016
This study is to report 1) the sensitivity of intensity modulated radiation therapy (IMRT) QA method for clinical volumetric modulated arc therapy (VMAT) plans with multi-leaf collimator (MLC) leaf errors that will not trigger MLC interlock during beam ...
Xu Zhengzheng, Wang Iris Z., Kumaraswamy Lalith K., Podgorsak Matthew B.   +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

Hybrid Treatment Planning for Chest Wall Irradiation Utilizing Three-Dimensional Conformal Radiotherapy (3DCRT), Intensity-Modulated Radiation Therapy (IMRT), and Volumetric Modulated Arc Therapy (VMAT): A Systematic Review

Cureus
Novel hybrid approaches for chest wall irradiation show promising outcomes regarding target coverage and sparing organs at risk (OARs). In this systematic review, we compared hybrid volumetric modulated arc therapy (H-VMAT) or hybrid intensity-modulated ...
Zainab Alsaihaty, H. Abdul Manan, A. Sabarudin, N. Yahya   +3 more
semanticscholar   +1 more source

Dosimetric Comparison of Noncoplanar VMAT Without Rotating the Patient Couch Versus Conventional Coplanar/Noncoplanar VMAT for Head and Neck Cancer: First Report of Dynamic Swing Arc

Advances in Radiation Oncology
Purpose: This retrospective planning study aimed to verify the usefulness of a clinically available method, dynamic swing arc (DSA), a noncoplanar volumetric modulated arc therapy (VMAT) technique, of the new accelerator OXRAY for head and neck squamous ...
Kouta Hirotaki, MS, Kento Tomizawa, MD, PhD, Satoe Kitou, BS, Shunta Jinno, MS, Shunsuke Moriya, PhD, Takeshi Fujisawa, MD, Sadamoto Zenda, MD, PhD, Takeji Sakae, PhD, Masashi Ito, BS   +8 more
doaj   +1 more source

Commissioning and verification of a 3D Monte Carlo independent calculation software for O-ring linac systems. [PDF]

J Appl Clin Med Phys
Abstract Background O‐ring linac systems improve radiotherapy efficiency but require rigorous pretreatment verification due to increased delivery uncertainty in IMRT/VMAT. Existing methods face limitations: measurement‐based approaches incur setup errors, while calculation‐based methods (e.g., Monte Carlo) need machine‐specific validation per AAPM TG ...
Meng X, Dong T, Liang Y, Zhou Z, Wang Z, Qiu J, Zhao J, Zhang Z, Li W, Yang B.   +9 more
europepmc   +2 more sources

Meta-analysis and systematic review of vesicular monoamine transporter (VMAT-2) inhibitors in schizophrenia and psychosis

Psychopharmacology
Dopamine antagonists induce dopamine receptor supersensitivity. This may manifest in late-appearing movement disorders (tardive dyskinesia (TD). VMAT-2 inhibitors reduce dopaminergic transmission but have limited activity at postsynaptic receptors and so
A. Connolly, Phoebe Wallman, O. Dzahini, Oliver D. Howes, David M. Taylor   +4 more
semanticscholar   +1 more source

Investigation of VMAT Algorithms and Dosimetry [PDF]

Practical Radiation Oncology, 2013
{"references": ["Gregoire V, De neve W, Eisbruch A, Lee N, Van den Weyngaert D, Van Gestel D. Intensity modulated radiation therapy for Head and Neck carcinomas. The Oncologist. 2007; 12: 555-564.", "Braam P, Terhaard C, Roesink J. Intensity Modulated Radiotherapy significantly reduces xerostomia compared with conventional radiotherapy.
openaire   +2 more sources

Comparison of a Hybrid IMRT/VMAT technique with non-coplanar VMAT and non-coplanar IMRT for unresectable olfactory neuroblastoma using the RayStation treatment planning system—EUD, NTCP and planning study

Journal of Radiation Research, 2021
The purpose of this study was to compare hybrid intensity-modulated radiotherapy (IMRT) and volumetric-modulated arc therapy (Hybrid IMRT/VMAT), with non-coplanar (nc) IMRT and nc-VMAT treatment plans for unresectable olfactory neuroblastoma (ONB ...
V. Raturi, A. Motegi, S. Zenda, N. Nakamura, H. Hojo, S. Kageyama, M. Okumura, T. Rachi, H. Ohyoshi, H. Tachibana, K. Motegi, T. Ariji, M. Nakamura, Y. Hirano, H. Hirata, T. Akimoto   +15 more
semanticscholar   +1 more source