scholarly journals Volumetric modulated arc therapy treatment planning based on virtual monochromatic images for head and neck cancer: effect of the contrast‐enhanced agent on dose distribution

2019 ◽  
Vol 20 (11) ◽  
pp. 144-152
Author(s):  
Riho Komiyama ◽  
Shingo Ohira ◽  
Naoyuki Kanayama ◽  
Tsukasa Karino ◽  
Hayate Washio ◽  
...  
Keyword(s):  
Head And Neck Cancer ◽  
Head And Neck ◽  
Treatment Planning ◽  
Neck Cancer ◽  
Dose Distribution ◽  
Volumetric Modulated Arc Therapy ◽  
Contrast Enhanced ◽  
Arc Therapy ◽  
Therapy Treatment

The effect of photon energy on dose distribution in volumetric-modulated arc therapy planning for head and neck cancer

2020 ◽  
pp. 1-5
Author(s):  
Trang Hong Thi Nguyen ◽  
Akihiro Takemura ◽  
Shinichi Ueda ◽  
Kimiya Noto ◽  
Hironori Kojima ◽  
...  
Keyword(s):  
Head And Neck Cancer ◽  
Head And Neck ◽  
Neck Cancer ◽  
Dose Distribution ◽  
Maximum Dose ◽  
Volumetric Modulated Arc Therapy ◽  
Dual Energy ◽  
Planning System ◽  
Treatment Planning System ◽  
Arc Therapy

Abstract Aim: To investigate the effect of different energies on dose distribution in volumetric-modulated arc therapy (VMAT) plans for head and neck cancer. Materials and methods: Data from nine patients undergoing VMAT plans using 6 MV, 10 MV and dual-energy X-ray beams with the Pinnacle 3 V 9.10 treatment planning system (Philips Medical System, Fitchburg, WI, USA) were analysed for quality using the conformity index (CI) and homogeneity index (HI) for planning target volume (PTV), and for mean and maximum dose to the organs at risk (OARs): parotid glands, brainstem, spinal cord and optic nerves. Results: There were no clear differences in the HIs of the PTV dose among the different plans. The CIs for 10 MV and dual-energy VMAT plans were superior to that of the 6 MV VMAT plan (0·8 ± 0·3, 0·8 ± 0·3, and 0·7 ± 0·2, respectively; p = 0·001). There were no significant differences in mean/maximum dose to the OARs among the three VMAT plans. Findings: Compared with the 6 MV VMAT plan, the dual-energy VMAT plan slightly increased the coverage of the PTV with the prescribed dose but did not decrease dose to the OARs.

scholarly journals A Model-based method for assessment of salivary gland and planning target volume dosimetry in volumetric-modulated arc therapy planning on head-and-neck cancer

2019 ◽  
Vol 44 (3) ◽  
pp. 201
Author(s):  
Yijian Cao ◽  
Honglai Zhang ◽  
Jeffrey Antone ◽  
AdamC Riegel ◽  
Maged Ghaly ◽  
...  
Keyword(s):  
Head And Neck Cancer ◽  
Salivary Gland ◽  
Head And Neck ◽  
Neck Cancer ◽  
Planning Target Volume ◽  
Volumetric Modulated Arc Therapy ◽  
Target Volume ◽  
Therapy Planning ◽  
Model Based ◽  
Arc Therapy

scholarly journals Exploratory study of the association of volumetric modulated arc therapy ( VMAT ) plan robustness with local failure in head and neck cancer

2017 ◽  
Vol 18 (4) ◽  
pp. 76-83 ◽  
Author(s):  
Wei Liu ◽  
Samir H. Patel ◽  
Daniel P. Harrington ◽  
Yanle Hu ◽  
Xiaoning Ding ◽  
...  
Keyword(s):  
Head And Neck Cancer ◽  
Head And Neck ◽  
Neck Cancer ◽  
Exploratory Study ◽  
Volumetric Modulated Arc Therapy ◽  
Local Failure ◽  
Arc Therapy

Impact of shoulder deformation on volumetric modulated arc therapy doses for head and neck cancer

2018 ◽  
Vol 53 ◽  
pp. 118-128 ◽  
Author(s):  
Hidenobu Tachibana ◽  
Kana Motegi ◽  
Shunsuke Moriya
Keyword(s):  
Head And Neck Cancer ◽  
Head And Neck ◽  
Neck Cancer ◽  
Volumetric Modulated Arc Therapy ◽  
Arc Therapy

MO-FG-CAMPUS-TeP2-02: First Experiences and Perspectives in Using Direct Multicriteria Optimization (MCO) On Volumetric-Modulated Arc Therapy (VMAT) for Head and Neck Cancer

2016 ◽  
Vol 43 (6Part32) ◽  
pp. 3722-3722
Author(s):  
Samantha Edgington ◽  
Christopher Cotter ◽  
Paul Busse ◽  
Bruce Crawford ◽  
Yi Wang
Keyword(s):  
Head And Neck Cancer ◽  
Head And Neck ◽  
Neck Cancer ◽  
Multicriteria Optimization ◽  
Volumetric Modulated Arc Therapy ◽  
Arc Therapy

scholarly journals Is volumetric modulated arc therapy with constant dose rate a valid option in radiation therapy for head and neck cancer patients?

2018 ◽  
Vol 23 (3) ◽  
pp. 175-182 ◽  
Author(s):  
Annamaria Didona ◽  
Valentina Lancellotta ◽  
Claudio Zucchetti ◽  
Bianca Moira Panizza ◽  
Alessandro Frattegiani ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Head And Neck Cancer ◽  
Head And Neck ◽  
Dose Rate ◽  
Cancer Patients ◽  
Neck Cancer ◽  
Volumetric Modulated Arc Therapy ◽  
Arc Therapy ◽  
Constant Dose ◽  
Constant Dose Rate

scholarly journals Validation of the relative insensitivity of volumetric-modulated arc therapy (VMAT) plan quality to gantry space resolution

2016 ◽  
Vol 58 (4) ◽  
pp. 579-590 ◽  
Author(s):  
Ghulam Murtaza ◽  
Stefania Cora ◽  
Ehsan Ullah Khan
Keyword(s):  
Head And Neck Cancer ◽  
Head And Neck ◽  
Cancer Patients ◽  
Neck Cancer ◽  
Treatment Plan ◽  
Volumetric Modulated Arc Therapy ◽  
Optimization Techniques ◽  
Plan Quality ◽  
Arc Therapy ◽  
Single Arc

Abstract Volumetric-modulated arc therapy (VMAT) is an efficient form of radiotherapy used to deliver intensity-modulated radiotherapy beams. The aim of this study was to investigate the relative insensitivity of VMAT plan quality to gantry angle spacing (GS). Most previous VMAT planning and dosimetric work for GS resolution has been conducted for single arc VMAT. In this work, a quantitative comparison of dose–volume indices (DIs) was made for partial-, single- and double-arc VMAT plans optimized at 2°, 3° and 4° GS, representing a large variation in deliverable multileaf collimator segments. VMAT plans of six prostate cancer and six head-and-neck cancer patients were simulated for an Elekta SynergyS® Linac (Elekta Ltd, Crawley, UK), using the SmartArc™ module of Pinnacle³ TPS, (version 9.2, Philips Healthcare). All optimization techniques generated clinically acceptable VMAT plans, except for the single-arc for the head-and-neck cancer patients. Plan quality was assessed by comparing the DIs for the planning target volume, organs at risk and normal tissue. A GS of 2°, with finest resolution and consequently highest intensity modulation, was considered to be the reference, and this was compared with GS 3° and 4°. The differences between the majority of reference DIs and compared DIs were <2%. The metrics, such as treatment plan optimization time and pretreatment (phantom) dosimetric calculation time, supported the use of a GS of 4°. The ArcCHECK™ phantom–measured dosimetric agreement verifications resulted in a >95.0% passing rate, using the criteria for γ (3%, 3 mm). In conclusion, a GS of 4° is an optimal choice for minimal usage of planning resources without compromise of plan quality.

Intensity-modulated radiotherapy or volumetric-modulated arc therapy in patients with head and neck cancer: Focus on salivary glands dosimetry

Head & Neck ◽  
2016 ◽  
Vol 38 (7) ◽  
pp. 1028-1034 ◽  
Author(s):  
Alexis Vallard ◽  
Jean-Baptiste Guy ◽  
Sylvie Mengue Ndong ◽  
Nicolas Vial ◽  
Romain Rivoirard ◽  
...  
Keyword(s):  
Head And Neck Cancer ◽  
Head And Neck ◽  
Salivary Glands ◽  
Neck Cancer ◽  
Volumetric Modulated Arc Therapy ◽  
Intensity Modulated Radiotherapy ◽  
Intensity Modulated ◽  
Arc Therapy

scholarly journals OC-0069: Automatic interactive optimization for volumetric modulated arc therapy planning of head and neck cancer

2015 ◽  
Vol 115 ◽  
pp. S35
Author(s):  
J. Tol ◽  
M. Dahele ◽  
P. Doornaert ◽  
B.J. Slotman ◽  
W.F.A.R. Verbakel
Keyword(s):  
Head And Neck Cancer ◽  
Head And Neck ◽  
Neck Cancer ◽  
Volumetric Modulated Arc Therapy ◽  
Therapy Planning ◽  
Interactive Optimization ◽  
Arc Therapy
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