ArticleStrahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al]2021
Head and neck radiotherapy on the MR linac: a multicenter planning challenge amongst MRIdian platform users.
Article in Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al], 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 21 citations in OpenAlex.
- Operating procedures, risk management and challenges during implementation of adaptive and non-adaptive MR-guided radiotherapy: 1-year single-center experience.Radiation oncology (London, England) · 2021Trial
- Positioning accuracy and dosimetric evaluation of customized immobilization for FBCT guided VMAT in nasopharyngeal carcinoma.Scientific reports · 2025Article
- A comprehensive comparative study of generative adversarial network architectures for synthetic computed tomography generation in the abdomen.Medical physics · 2025Article
- The Use of MR-Guided Radiation Therapy for Head and Neck Cancer and Recommended Reporting Guidance.Seminars in radiation oncology · 2024Review
- Development and implementation of optimized endogenous contrast sequences for delineation in adaptive radiotherapy on a 1.5T MR-linear-accelerator: a prospective R-IDEAL stage 0-2a quantitative/qualitative evaluation ofJournal of medical imaging (Bellingham, Wash.) · 2023Article
- Automated tracking of morphologic changes in weekly magnetic resonance imaging during head and neck radiotherapy.Journal of applied clinical medical physics · 2023Article
- Synthetic computed tomography for low-field magnetic resonance-only radiotherapy in head-and-neck cancer using residual vision transformers.Physics and imaging in radiation oncology · 2023Article
- Effect of 0.35 T and 1.5 T magnetic fields on superficial dose in MR-guided radiotherapy of laryngeal cancer.Clinical and translational radiation oncology · 2023Article
- Impact of intrafraction motion in pancreatic cancer treatments with MR-guided adaptive radiation therapy.Frontiers in oncology · 2023Article
- Imaging of GBM in the Age of Molecular Markers and MRI Guided Adaptive Radiation Therapy.Journal of clinical medicine · 2022Review
- Synthetic computed tomography for low-field magnetic resonance-guided radiotherapy in the abdomen.Physics and imaging in radiation oncology · 2022Article
- Improving the clinical workflow of a MR-Linac by dosimetric evaluation of synthetic CT.Frontiers in oncology · 2022Article
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Authors and funding
9 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposePurpose of this study is to evaluate plan quality on the MRIdian (Viewray Inc., Oakwood Village, OH, USA) system for head and neck cancer (HNC) through comparison of planning approaches of several centers.
methodsA total of 14 planners using the MRIdian planning system participated in this treatment challenge, centrally organized by ViewRay, for one contoured case of oropharyngeal carcinoma with standard constraints for organs at risk (OAR). Homogeneity, conformity, sparing of OARs, and other parameters were evaluated according to The International Commission on Radiation Units and Measurements (ICRU) recommendations anonymously, and then compared between centers. Differences amongst centers were assessed by means of Wilcoxon test. Each plan had to fulfil hard constraints based on dose-volume histogram (DVH) parameters and delivery time. A plan quality metric (PQM) was evaluated. The PQM was defined as the sum of 16 submetrics characterizing different DVH goals.
resultsFor most dose parameters the median score of all centers was higher than the threshold that results in an ideal score. Six participants achieved the maximum number of points for the OAR dose parameters, and none had an unacceptable performance on any of the metrics. Each planner was able to achieve all the requirements except for one which exceeded delivery time. The number of segments correlated to improved PQM and inversely correlated to brainstem D
conclusionMagnetic Resonance Image (MRI) linac-based planning for HNC is already feasible with good quality. Generally, an increased number of segments and increasing planning experience are able to provide better results regarding planning quality without significantly prolonging overall treatment time.
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