Results 1 to 10 of about 6,070 (214)

Impact of magnetic resonance-guided versus conventional radiotherapy workflows on organ at risk doses in stereotactic body radiotherapy for lymph node oligometastases [PDF]

Physics and Imaging in Radiation Oncology, 2022
Background and purpose: Magnetic resonance (MR)-linac delivery is expected to improve organ at risk (OAR) sparing. In this study, OAR doses were compared for online adaptive MR-linac treatments and conventional cone beam computed tomography (CBCT)-linac ...
Anita M. Werensteijn-Honingh, Petra S. Kroon, Dennis Winkel, J. Carlijn van Gaal, Jochem Hes, Louk M.W. Snoeren, Jaleesa K. Timmer, Christiaan C.P. Mout, Gijsbert H. Bol, Alexis N. Kotte, Wietse S.C. Eppinga, Martijn Intven, Bas W. Raaymakers, Ina M. Jürgenliemk-Schulz   +13 more
doaj   +3 more sources

Feasibility of cardiac-synchronized quantitative T1 and T2 mapping on a hybrid 1.5 Tesla magnetic resonance imaging and linear accelerator system [PDF]

Physics and Imaging in Radiation Oncology, 2022
Background and Purpose: The heart is important in radiotherapy either as target or organ at risk. Quantitative T1 and T2 cardiac magnetic resonance imaging (qMRI) may aid in target definition for cardiac radioablation, and imaging biomarker for ...
Osman Akdag, Stefano Mandija, Astrid L.H.M.W. van Lier, Pim T.S. Borman, Tim Schakel, Eveline Alberts, Oscar van der Heide, Rutger J. Hassink, Joost J.C. Verhoeff, Firdaus A.A. Mohamed Hoesein, Bas W. Raaymakers, Martin F. Fast   +11 more
doaj   +3 more sources

The MOMENTUM Study: An International Registry for the Evidence-Based Introduction of MR-Guided Adaptive Therapy [PDF]

Frontiers in Oncology, 2020
Purpose: MR-guided Radiation Therapy (MRgRT) allows for high-precision radiotherapy under real-time MR visualization. This enables margin reduction and subsequent dose escalation which may lead to higher tumor control and less toxicity.
Sophie R. de Mol van Otterloo, John P. Christodouleas, Erwin L. A. Blezer, Hafid Akhiat, Kevin Brown, Ananya Choudhury, Dave Eggert, Beth A. Erickson, Corinne Faivre-Finn, Clifton D. Fuller, Joel Goldwein, Shaista Hafeez, Emma Hall, Kevin J. Harrington, Uulke A. van der Heide, Robert A. Huddart, Martijn P. W. Intven, Anna M. Kirby, Susan Lalondrelle, Claire McCann, Bruce D. Minsky, Stella Mook, Marlies E. Nowee, Uwe Oelfke, Kristina Orrling, Arjun Sahgal, Jeffrey G. Sarmiento, Christopher J. Schultz, Robbert J. H. A. Tersteeg, Rob H. N. Tijssen, Alison C. Tree, Baukelien van Triest, William A. Hall, Helena M. Verkooijen   +33 more
doaj   +3 more sources

Clinical implementation and feasibility of long-course fractionated MR-guided chemoradiotherapy for patients with esophageal cancer: An R-IDEAL stage 1b/2a evaluation of technical innovation [PDF]

Clinical and Translational Radiation Oncology, 2022
Purpose: This R-Ideal stage 1b/2a study describes the workflow and feasibility of long-course fractionated online adaptive MR-guided chemoradiotherapy with reduced CTV-to-PTV margins on the 1.5T MR-Linac for patients with esophageal cancer.
M.R. Boekhoff, R. Bouwmans, P.A.H. Doornaert, M.P.W. Intven, J.J.W. Lagendijk, A.L.H.M.W. van Lier, M.J.A. Rasing, S. van de Ven, G.J. Meijer, S. Mook   +9 more
doaj   +3 more sources

Validation of echo planar imaging based diffusion-weighted magnetic resonance imaging on a 0.35 T MR-Linac [PDF]

Physics and Imaging in Radiation Oncology
Background and Purpose: The feasibility of acquiring diffusion-weighted imaging (DWI) images on an MR-Linac for quantitative response assessment during radiotherapy was explored. DWI data obtained with a Spin Echo Echo Planar Imaging sequence adapted for
Philipp Wallimann, Marco Piccirelli, Sylwia Nowakowska, Tess Armstrong, Michael Mayinger, Andreas Boss, Andrea Bink, Matthias Guckenberger, Stephanie Tanadini-Lang, Nicolaus Andratschke, Bertrand Pouymayou   +10 more
doaj   +3 more sources

Evaluating participant experiences and tolerability with MR Linac imaging [PDF]

Technical Innovations & Patient Support in Radiation Oncology
Introduction: Magnetic Resonance Image Guided Radiotherapy (MRIgRT) integrates MRI with a linear accelerator to enable adaptive treatment delivery. While technical feasibility is well established, patient experience during MR Linac imaging, especially ...
Jayde Nartey, Helen A. McNair, Katie Biscombe, Sophie E. Alexander, Charlotte Cherry, Cynthia Eccles, Trina Herbert, Shaista Hafeez, Kelly Jones, Francesca Mason, Simeon Nill, Hosna Mohammad, Kian Morrison, Bethany Williams, Robert Huddart   +14 more
doaj   +2 more sources

Daily adaptive radiotherapy for patients with prostate cancer using a high field MR-linac: Initial clinical experiences and assessment of delivered doses compared to a C-arm linac

Clinical and Translational Radiation Oncology, 2020
Introduction: MR-guided adapted radiotherapy (MRgART) using a high field MR-linac has recently become available. We report the estimated delivered fractional dose of the first five prostate cancer patients treated at our centre using MRgART and compare ...
Robert Adam Mitchell, Alison C Tree, Helen Barnes   +2 more
exaly   +3 more sources

Detectability and intra-fraction motion of individual elective lymph nodes in head and neck cancer patients on the Magnetic Resonance Image guided linear accelerator [PDF]

Physics and Imaging in Radiation Oncology
Background and purpose: Individual elective lymph node irradiation instead of elective neck irradiation is a new concept for head-and-neck cancer (HNC) patients developed for the Magnetic Resonance Image guided linear accelerator (MR-linac).
Floris C.J. Reinders, Mischa de Ridder, Peter R.S. Stijnman, Patricia A.H. Doornaert, Cornelis P.J. Raaijmakers, Marielle E.P. Philippens   +5 more
doaj   +3 more sources

Focal salvage treatment for radiorecurrent prostate cancer: A magnetic resonance-guided stereotactic body radiotherapy versus high-dose-rate brachytherapy planning study [PDF]

Physics and Imaging in Radiation Oncology, 2020
Background and Purpose: Magnetic resonance imaging (MRI)-guided focal salvage high-dose-rate brachytherapy (FS-HDR-BT) is one of the treatment options for radiorecurrent localized prostate cancer. However, due to the invasive nature of the treatment, not
Thomas Willigenburg, Ellis Beld, Jochem Hes, Jan J.W. Lagendijk, Hans C.J. de Boer, Marinus A. Moerland, Jochem R.N. van der Voort van Zyp   +6 more
doaj   +3 more sources

MRI-guided adaptive radiotherapy for prostate cancer: When do we need to account for intra-fraction motion? [PDF]

Clinical and Translational Radiation Oncology, 2022
A shift of the daily plan can mitigate target position changes that occur between daily MR acquisition and treatment for MR-linac radiotherapy, but increases the session time.
R. Lawes, H. Barnes, T. Herbert, A. Mitchell, S. Nill, U. Oelfke, A. Pathmanathan, G. Adair Smith, K. Sritharan, A. Tree, H.A. McNair, A. Dunlop   +11 more
doaj   +4 more sources