Results 11 to 20 of about 649,932 (223)

Stereotactic total ablative radiotherapy with MR-LINAC for synchronous oligometastatic prostate cancer [PDF]

Front Oncol
Objectives To prospectively investigate the feasibility, toxicity, and preliminary clinical outcomes of magnetic resonance (MR)-guided stereotactic total ablative radiotherapy (MRgSTAR) for simultaneous treatment of the prostate and pelvic bone ...
Darren Poon, Jing Yuan, O. Wong, Bin Yang, S. Chiu, Kin Yin Cheung, George Chiu, Siu Ki Ben Yu   +7 more
semanticscholar   +2 more sources

Commissioning of a motion management system for a 1.5T Elekta Unity MR‐Linac: A single institution experience [PDF]

J Appl Clin Med Phys
Purpose This work describes a single institution experience of commissioning a real‐time target tracking and beam control system, known as comprehensive motion management, for a 1.5 T Elekta MR‐Linac.
Blake R. Smith, J. St-Aubin, D. Hyer
semanticscholar   +2 more sources

MR-Linac Radiotherapy - The Beam Angle Selection Problem [PDF]

Frontiers in Oncology, 2021
BACKGROUND: With the large-scale introduction of volumetric modulated arc therapy (VMAT), selection of optimal beam angles for coplanar static-beam IMRT has increasingly become obsolete. Due to unavailability of VMAT in current MR-linacs, the problem has
Bijman, Rik, Breedveld, Sebastiaan, de Ruiter, Peter, Heijmen, Ben, Janssen, Tomas, Rossi, Linda, Sonke, Jan-Jakob, van Triest, Baukelien   +7 more
core   +7 more sources

Adaptive radiotherapy: The Elekta Unity MR-linac concept [PDF]

Clinical and Translational Radiation Oncology, 2019
The promise of the MR-linac is that one can visualize all anatomical changes during the course of radiotherapy and hence adapt the treatment plan in order to always have the optimal treatment. Yet, there is a trade-off to be made between the time spent for adapting the treatment plan against the dosimetric gain.
D. Winkel, G. Bol, P. Kroon, B. van Asselen, S. Hackett, A. M. Werensteijn-Honingh, M. Intven, W. Eppinga, R. Tijssen, L. Kerkmeijer, H. D. de Boer, S. Mook, G. Meijer, J. Hes, M. Willemsen-Bosman, Eline N. de Groot-van Breugel, I. Jürgenliemk-Schulz, B. Raaymakers   +17 more
semanticscholar   +6 more sources

Enhanced analysis of gating latency in 0.35T MR‐linac through innovative time synchronization of a motion phantom and plastic scintillation detector [PDF]

J Appl Clin Med Phys
Purpose This study aims to evaluate how different gantry angles, breathing rates (BPM), cine image speeds, and tracking algorithms affect beam on/off latency and the subsequent impact on target dose for a 0.35T MR‐Linac with a 6 MV FFF beam.
Mateb Al Khalifa, Tianjun Ma, Haya Aljuaid, Siyong Kim, William Y Song   +4 more
semanticscholar   +2 more sources

Characterization of an MR‐compatible motion platform for quality assurance of motion‐compensated treatments on the 1.5 T MR‐linac [PDF]

Med Phys
Background Novel motion‐compensated treatment techniques on the MR‐linac can address adverse intra‐fraction motion effects. These techniques involve beam gating or intra‐fraction adaptations of the treatment plan based on real‐time magnetic resonance ...
S. Oolbekkink, P. Borman, J. Wolthaus, B. van Asselen, A. V. van Lier, Stephanie Dunn, Grant Koenig, N. Hartman, Niusha Kheirkhah, B. Raaymakers, M. Fast   +10 more
semanticscholar   +2 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

Initial experience with MR-guided adaptive spinal stereotactic radiotherapy: a new indication for the MR-linac [PDF]

Strahlenther Onkol
Stereotactic body radiotherapy (SBRT) is associated with good local control and symptom relief in the management of spinal metastases. Delivery of ablative doses and re-irradiation is challenged by spinal cord toxicity.
N. Dincer, Teuta Zoto Mustafayev, C. Atahan, G. Gungor, G. Ugurluer, M. Abacioglu, E. Ozyar, B. Atalar   +7 more
semanticscholar   +2 more sources

First-in-human technique translation of oxygen-enhanced MRI to an MR Linac system in patients with head and neck cancer [PDF]

Radiotherapy and Oncology, 2023
BACKGROUND AND PURPOSE: Tumour hypoxia is prognostic in head and neck cancer (HNC), associated with poor loco-regional control, poor survival and treatment resistance.
Berks, Michael, Bristow, Robert G, Buckley, David L, Cheung, Susan, Choudhury, Ananya, Clough, Abigael, Datta, Anubhav, Dubec, Michael J, Eccles, Cynthia L, Gaffney, John, Hague, Christina, Hoskin, Peter J, Little, Ross A, Matthews, Julian C, McHugh, Damien J, McPartlin, Andrew, O'Connor, James PB, Parker, Geoff JM, Porta, Nuria, van Herk, Marcel   +19 more
core   +2 more sources

Repeatability, reproducibility, and the effects of radiotherapy on radiomic features of lowfield MR-LINAC images of the prostate [PDF]

Front Oncol
Definitive radiotherapy (RT) has been shown to be a successful method of treating prostate cancer (PCa) patients. Through radiomics, a quantitative analysis of medical images, it is possible to adapt treatment early on, which may prevent or mitigate ...
Parker Anderson, Nesrin Dogan, J. C. Ford, Kyle R. Padgett, G. Simpson, Radka Stoyanova, M. Abramowitz, Alan Dal Pra, R. Delgadillo   +8 more
semanticscholar   +2 more sources