Results 281 to 290 of about 43,525 (332)

Out-of-field doses in pediatric craniospinal irradiations with 3D-CRT, VMAT and scanning proton radiotherapy - a phantom study.

Medical Physics (Lancaster), 2022
PURPOSE Craniospinal irradiation (CSI) has greatly increased survival rates for patients with a diagnosis of medulloblastoma and other primitive neuroectodermal tumors.
M. Majer, I. Ambrožová, M. Davídková, M. De Saint-Hubert, Mladen Kasabašić, Ž. Knežević, R. Kopeć, D. Krzempek, K. Krzempek, S. Miljanić, N. Mojżeszek, I. Veršić, L. Stolarczyk, R. Harrison, P. Olko   +14 more
semanticscholar   +1 more source

4D VMAT, gated VMAT, and 3D VMAT for stereotactic body radiation therapy in lung

Physics in Medicine and Biology, 2013
Four-dimensional volumetric modulated arc therapy (4D VMAT) is a treatment strategy for lung cancers that aims to exploit relative target and tissue motion to improve organ at risk (OAR) sparing. The algorithm incorporates the entire patient respiratory cycle using 4D CT data into the optimization process.
E, Chin, S K, Loewen, A, Nichol, K, Otto
openaire   +2 more sources

Coplanar VMAT vs. noncoplanar VMAT in the treatment of sinonasal cancer

Strahlentherapie und Onkologie, 2014
Previous studies showed that noncoplanar intensity-modulated radiotherapy (NC-IMRT) for sinonasal cancer is superior to coplanar intensity-modulated radiotherapy (IMRT). Volumetric-modulated arc therapy (VMAT) is a newly introduced treatment modality, and the performance of noncoplanar VMAT for sinonasal cancer has not been well described to date.To ...
Ning, Zhong-Hua, Jiang, Jing-Ting, Li, Xiao-Dong, Mu, Jin-Ming, Mo, Jun-Chong, Jin, Jian-Xue, Gao, Ming, Li, Qi-Lin, Gu, Wen-Dong, Chen, Lu-Jun, Pei, Hong-Lei   +10 more
openaire   +2 more sources

Sci-Thur PM: YIS - 03: Comparing 4D-VMAT, Gated-VMAT and 3D-VMAT in SBRT treatment of lung cancer

Medical Physics, 2012
To evaluate the treatment plan qualities of 4D-VMAT, gated-VMAT and 3D-VMAT in the treatment of non-small cell lung cancer (NSCLC) in stereotactic body radiation therapy (SBRT).4D-VMAT is a motion compensation strategy that aims to exploit relative target and OAR motion to increase OAR sparing over 3D-VMAT without the long treatment times associated ...
E, Chin, S, Loewen, A, Nichol, K, Otto
openaire   +4 more sources

Dosimetric and planning efficiency comparison for lung SBRT: CyberKnife vs VMAT vs knowledge-based VMAT

Medical Dosimetry, 2020
This is the first study that compared treatment plan quality and planning efficiency for lung stereotactic body radiation therapy (SBRT) using CyberKnife (CK) Multiplan vs Varian Eclipse treatment planning systems, including volumetric modulated arc therapy (VMAT) and knowledge-based VMAT (KBP-VMAT). Thirteen lung SBRT patients treated with 50 to 55 Gy
Suhong, Yu, Huijun, Xu, Asa, Sinclair, Xin, Zhang, Ulrich, Langner, Kimberley, Mak   +5 more
openaire   +2 more sources

Dose rate mapping of VMAT treatments

Physics in Medicine and Biology, 2016
Human tissues exhibit a varying response to radiation dose depending on the dose rate and fractionation scheme used. Dose rate effects have been reported for different radiations, and tissue types. The literature indicates that there is not a significant difference in response for low-LET radiation when using dose rates between 1 Gy min(-1) and 12 Gy ...
Podesta, Mark, Popescu, I. Antoniu, Verhaegen, Frank   +2 more
openaire   +3 more sources

Online adaptation and verification of VMAT

Medical Physics, 2015
Purpose:This work presents a method for fast volumetric modulated arc therapy (VMAT) adaptation in response to interfraction anatomical variations. Additionally, plan parameters extracted from the adapted plans are used to verify the quality of these plans.
Wouter, Crijns, Gilles, Defraene, Hans, Van Herck, Tom, Depuydt, Karin, Haustermans, Frederik, Maes, Frank, Van den Heuvel   +6 more
openaire   +2 more sources

Automated MV markerless tumor tracking for VMAT

Physics in Medicine & Biology, 2020
Tumor tracking during radiotherapy treatment can improve dose accuracy, conformity and sparing of healthy tissue. Many methods have been introduced to tackle this challenge utilizing multiple imaging modalities, including a template matching based approach using the megavoltage (MV) on-board portal imager demonstrated on 3D conformal treatments ...
D, Ferguson, T, Harris, M, Shi, M, Jacobson, M, Myronakis, M, Lehmann, P, Huber, D, Morf, R, Fueglistaller, P, Baturin, I, Valencia Lozano, C, Williams, R, Berbeco   +12 more
openaire   +2 more sources

VMAT plus a few computer-optimized non-coplanar IMRT beams (VMAT+) tested for liver SBRT

Radiotherapy and Oncology, 2017
To propose a novel treatment approach, designated VMAT+, involving addition of
Sharfo, Abdul, Dirkx, Maarten, Breedveld, Sebastiaan, Mendez Romero, Alejandra, Heijmen, Ben   +4 more
openaire   +2 more sources

MEME KANSERİ RADYOTERAPİSİNDE FİF,VMAT,IMRT,H-VMAT,H-IMRT PLANLAMA TEKNİKLERİNİN DOZİMETRİK İNCELENMESİ

2021
MEME KANSERİ RADYOTERAPİSİNDE FİF,VMAT,IMRT,H-VMAT,H-IMRT PLANLAMA TEKNİKLERİNİN DOZİMETRİK İNCELENMESİHilal Saraç Canbolat1, Serap Çatlı Dinç1, Ertuğrul Şentürk1, Niyazi Volkan Demircan2, Hüseyin Bora11Gazi Üniversitesi Tıp Fakültesi Radyasyon Onkolojisi Anabilimdalı2Mehmet Akif İnan Eğitim ve Araştırtma HastanesiAmaç: Radyoterapi uygulamalarındaki ...
Şentürk, Muhammed Ertuğrul, Bora, Hüseyin, Saraç Canbolat, Hilal, Çatlı Dinç, Serap   +3 more
openaire   +2 more sources