Results 71 to 80 of about 15,485 (236)

Quality assurance of dynamic parameters in volumetric modulated arc therapy [PDF]

The British Journal of Radiology, 2012
The purpose of this study was to demonstrate quality assurance checks for accuracy of gantry speed and position, dose rate and multileaf collimator (MLC) speed and position for a volumetric modulated arc treatment (VMAT) modality (Synergy S; Elekta, Stockholm, Sweden), and to check that all the necessary variables and parameters were synchronous.Three ...
A, Manikandan, B, Sarkar, R, Holla, T R, Vivek, N, Sujatha   +4 more
openaire   +2 more sources

Treatment With the Shaker Head‐Lift Exercise in Head and Neck Cancer Patients With Radiation‐Induced Dysphagia: 12‐Month Results on Swallowing Function From a Randomized, Controlled Trial

Head &Neck, EarlyView.
ABSTRACT Background Dysphagia is a common side‐effect after radiotherapy in head and neck cancer patients. This randomized study aimed to evaluate the effect of the shaker head‐lift exercise (HLE) after 12 months with flexible endoscopic evaluation of swallowing (FEES). Methods Patients were randomly assigned to the intervention (n = 30) or the control
Signe Rödseth Smith, Caterina Finizia, Kerstin Petersson, Lisa Tuomi   +3 more
wiley   +1 more source

The NCS code of practice for the quality assurance and control for volumetric modulated arc therapy [PDF]

, 2016
In 2010, the NCS (Netherlands Commission on Radiation Dosimetry) installed a subcommittee to develop guidelines for quality assurance and control for volumetric modulated arc therapy (VMAT) treatments.
Ollers, Michel C., Vugts, Cornelia A. J. M., Wolthaus, Jochem W. H., Mans, Anton, Admiraal, Marjan, van de Kamer, Jeroen B., Louwe, Rob J. W., Arends, Mark P., Öllers, Michel, Schuring, Danny, Lotz, Heidi T.   +10 more
core   +1 more source

Stereotactic Body Radiotherapy (SBRT) of Previously Unirradiated Mucosal Head and Neck Squamous Cell Carcinoma (SCC)

Head &Neck, EarlyView.
ABSTRACT Purpose To evaluate the efficacy and safety of stereotactic body radiation therapy (SBRT) in previously untreated primary mucosal head and neck cancer (HNC) patients unfit for conventional radiation therapy. Materials and Methods Retrospective analysis of previously unirradiated primary SCC mucosal HNC patients treated with SBRT from 2011 to ...
Mohammed Aldohan, Irene Karam, Amir H. Safavi, Lee Chin, Liying Zhang, Ethan Gooanratne, Madette Galapin, Antoine Eskander, Kevin Higgins, Danny Enepekides, Ian Poon   +10 more
wiley   +1 more source

Normal liver sparing by proton beam therapy for hepatocellular carcinoma: Comparison with helical intensity modulated radiotherapy and volumetric modulated arc therapy [PDF]

, 2015
Normal liver sparing by proton beam therapy for hepatocellular carcinoma: Comparison with helical intensity modulated radiotherapy and volumetric modulated arc ...
Joong-Won Park (816550), Kwang Hyun Cho (821773), Jung Hoon Park (516330), Sang Soo Kim (607348), Dae Yong Kim (398883), Dae Woong Kim (821776), Dong Ho Shin (299513), Se Byeong Lee (821777), Ja Young Kim (821772), Sang Hyoun Choi (821774), Young Kyung Lim (805014), Tae Hyun Kim (91783), Joo-Young Kim (235999), Hojin Jeong (821775)   +13 more
core   +1 more source

Dose verification for respiratory-gated volumetric modulated arc therapy [PDF]

Physics in Medicine and Biology, 2011
A novel commercial medical linac system (TrueBeam™, Varian Medical Systems, Palo Alto, CA) allows respiratory-gated volumetric modulated arc therapy (VMAT), a new modality for treating moving tumors with high precision and improved accuracy by allowing for regular motion associated with a patient's breathing during VMAT delivery.
Jianguo, Qian, Lei, Xing, Wu, Liu, Gary, Luxton   +3 more
openaire   +2 more sources

Hypervision Proton Surgery: The Future Direction of Proton Therapy

iNew Medicine, EarlyView.
ABSTRACT Proton beams provide unique physical advantages characterized by a low entrance dose, negligible exit dose, and a sharp Bragg peak, which enable superior sparing of normal tissues and support safe dose escalation for improved tumor control. However, conventional photon‐based fractionation remains widely used in proton therapy, where prolonged ...
Li Li, Shuanghu Yuan
wiley   +1 more source

Dosimetric comparison for volumetric modulated arc therapy and intensitymodulated radiotherapy on the left-sided chest wall and internal mammary nodes irradiation in treating post-mastectomy breast cancer

Radiology and Oncology, 2015
Background. The aim of the study was to evaluate the dosimetric benefit of applying volumetric modulated arc therapy (VMAT) on the post-mastectomy left-sided breast cancer patients, with the involvement of internal mammary nodes (IMN).
Zhang Qian, Yu Xiao Li, Hu Wei Gang, Chen Jia Yi, Wang Jia Zhou, Ye Jin Song, Guo Xiao Mao   +6 more
doaj   +1 more source

Ninety-degree angled collimator: a dosimetric study related to dynamic intensity-modulated radiotherapy in patients with endometrial carcinoma

BMC Cancer, 2023
Background Our purpose was to ensure that the dose constraints of the organs at risk (OARs) were not exceeded while increasing the prescription dose to the planning target volume (PTV) from 45 to 50.4 Gray (Gy) with the dynamic intensity-modulated ...
Alparslan Serarslan, Yalçın Daştan, Telat Aksu, Rana Elif Yıldız, Bilge Gürsel, Deniz Meydan, Nilgün Özbek Okumuş   +6 more
doaj   +1 more source

Volumetric modulated arc therapy versus tomotherapy for late T-stage nasopharyngeal carcinoma

Frontiers in Oncology, 2022
PurposeTo compare the dosimetric parameters and clinical outcomes between volumetric modulated arc therapy (VMAT) and tomotherapy for treating late T-stage nasopharyngeal carcinoma (NPC).MethodsPatients with non-metastatic late T-stage NPC who received ...
Qian Chen, Qian Chen, Lingwei Tang, Zhe Zhu, Liangfang Shen, Shan Li, Shan Li   +6 more
doaj   +1 more source