Results 51 to 60 of about 12,932 (162)

Assessing the role of volumetric‐modulated arc therapy in hepatocellular carcinoma [PDF]

Journal of Applied Clinical Medical Physics, 2013
The role of volumetric‐modulated arc therapy (VMAT) in hepatocellular carcinoma (HCC) remains controversial. The purpose of this study was to determine the potential clinical role of VMAT compared with three‐dimensional conformal radiotherapy (3D CRT) for liver irradiation.
Xi, Mian, Zhang, Li, Li, Qiao‐Qiao, Zhao, Lei, Zhang, Rui, Liu, Meng‐Zhong   +5 more
openaire   +2 more sources

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

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

Validation of delivery consistency for intensity-modulated radiation therapy and volumetric-modulated arc therapy plans

Journal of Medical Physics, 2018
The delivery consistency of a Varian Edge linear accelerator over the entire course of treatment for nasopharynx carcinoma (NPC) and prostate cancer intensity-modulated radiation therapy (IMRT) and volumetric-modulated arc therapy (VMAT) treatment plans ...
Wui Ann Woon, Paul B Ravindran, Piyasiri Ekayanake, Yivonne Yih Fang Lim   +3 more
doaj   +1 more source

Volumetric modulated arc therapy with robust optimization for larynx cancer [PDF]

Physica Medica, 2019
The aim of this study was to perform a comparison between robust optimization and planning target volume (PTV)-based optimization plans using volumetric modulated arc-therapy (VMAT) by evaluating perturbed doses induced by localization offsets for setup uncertainties in larynx cancer radiation therapy.Ten patients with early-stage (T1-2N0) glottis ...
Hideharu, Miura, Yoshiko, Doi, Shuichi, Ozawa, Minoru, Nakao, Keiichi, Ohnishi, Masahiko, Kenjo, Yasushi, Nagata   +6 more
openaire   +2 more sources

Impact of Treatment Technique on Testicular Dose and Sexual Activity in Rectal Cancer Patients

Brazilian Journal of Oncology
Objective To estimate the incidental radiation dose delivered to the testicles in three-dimensional conformal radiotherapy (3DCRT), intensity-modulated radiotherapy (IMRT), and volumetric-modulated arc therapy (VMAT) in rectal cancer patients ...
Poornachandra Tejaswi-Siddappa, Shamsundar Sunkappa, Jagannath Kunigal-Puttaswamy, Aradhana Katke, Nanda Ramanand, Thejaswini Boraiah   +5 more
doaj   +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

A synthetic diamond diode in volumetric modulated arc therapy dosimetry [PDF]

Medical Physics, 2013
Purpose:The aim of this work is to investigate the behavior of a single crystal diamond diode (SCDD) for volumetric modulated arc therapy (VMAT) dose verifications. This delivery technique is one of the most severe test of a dosimeter performance due to the modulation of the dose rate achieved by simultaneously changing the velocity of the gantry and ...
Zani, M, Bucciolini, M, Casati, M, Talamonti, C, MARINELLI, MARCO, Prestopino, G, Tonnetti, A, VERONA RINATI, GIANLUCA   +7 more
openaire   +5 more sources

Cardiac Exposure in the Dynamic Conformal Arc Therapy, Intensity-Modulated Radiotherapy and Volumetric Modulated Arc Therapy of Lung Cancer.

PLoS ONE, 2015
PurposeTo retrospectively evaluate the cardiac exposure in three cohorts of lung cancer patients treated with dynamic conformal arc therapy (DCAT), intensity-modulated radiotherapy (IMRT), or volumetric modulated arc therapy (VMAT) at our institution in ...
Xin Ming, Yuanming Feng, Huan Liu, Ying Zhang, Li Zhou, Jun Deng   +5 more
doaj   +1 more source