Results 21 to 30 of about 801,823 (212)

Adaptive fractionation at the MR-linac

Physics in Medicine & Biology, 2023
Abstract Objective . Fractionated radiotherapy typically delivers the same dose in each fraction. Adaptive fractionation (AF) is an approach to exploit inter-fraction motion by increasing the dose on days when the distance of tumor and dose-limiting organs at risk (OAR) is large and decreasing ...
Pérez Haas, Y, Ludwig, Roman, Dal Bello, Riccardo, Tanadini-Lang, Stephanie, Unkelbach, Jan   +4 more
openaire   +2 more sources

Commissioning measurements on an Elekta Unity MR-Linac [PDF]

Physical and Engineering Sciences in Medicine, 2022
Abstract Magnetic resonance-guided radiotherapy technology is relatively new and commissioning publications, quality assurance (QA) protocols and commercial products are limited. This work provides guidance for implementation measurements that may be performed on the Elekta Unity MR-Linac (Elekta, Stockholm ...
Marcus Powers, John Baines, Robert Crane, Chantelle Fisher, Stephen Gibson, Linda Marsh, Bronwyn Oar, Ariadne Shoobridge, Emily Simpson-Page, Marchant Van der Walt, Glenn de Vine   +10 more
openaire   +3 more sources

DataSheet_1_Case Report: MR-LINAC-guided adaptive radiotherapy for gastric cancer.docx

, 2023
BackgroundThe stomach is one of the most deformable organs. Its shape can be easily affected by breathing movements, and daily diet, and it also varies when the body position is different.
Huadong Wang (291601), Huadong Wang, Fada Guan, Mengyu Zhao, Mengyu Zhao (5876441), Yajun Song (46411), Yajun Song, Jinbo Yue, Jinbo Yue (6067046), Yun Zhang (131894), Zhenjiang Li, Fada Guan (16951974), Zhenjiang Li (1448203), Yun Zhang   +13 more
core   +1 more source

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

Frontiers in Oncology, 2021
BackgroundWith 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 re-gained importance.
Bijman, Rik, Rossi, Linda, Janssen, Tomas, de Ruiter, Peter, van Triest, Baukelien, Breedveld, Sebastiaan, Sonke, Jan-Jakob, Heijmen, Ben   +7 more
openaire   +4 more sources

Fat-suppressed SPAIR T2-weighted MRI sequences for head and neck imaging on the MR-Linac

, 2022
Anonymized images from 5 fat-suppressed (SPAIR) sequences and 1 non-suppressed sequence acquired on 5 head and neck cancer patients on the Unity MR ...
Travis Salzillo (12846569), Clifton Fuller (528030)   +1 more
core   +1 more source

Old dogs, new tricks: MR‐Linac training and credentialing of radiation oncologists, radiation therapists and medical physicists

Journal of Medical Radiation Sciences, 2023
The introduction of magnetic resonance (MR) linear accelerators (MR‐Linacs) into radiotherapy departments has increased in recent years owing to its unique advantages including the ability to deliver online adaptive radiotherapy.
Louise Hogan, Michael Jameson, David Crawford, Stacy Alvares, Conrad Loo, Maddison Picton, Zoe Moutrie, Claire Pagulayan, Ursula Jelen, Nicolle Dunkerley, Tania Twentyman, Jeremy deLeon, Vikneswary Batumalai   +12 more
doaj   +1 more source

Analysis of data to Advance Personalised Therapy with MR-Linac (ADAPT-MRL)

Clinical and Translational Radiation Oncology, 2021
Background: Analysis of Data to Advance Personalised Therapy with MR-Linac (ADAPT-MRL) is a multi-site, multinational, observational cohort registry designed to collect data on the use of the magnetic resonance linear accelerator (MR-Linac) for radiation
Jeremiah de Leon, Amanda Woods, Tania Twentyman, Michael Meade, Vicki Sproule, Smitha Chandran, Joseph Christiansen, Neil Kennedy, Maria Marney, Kris Barooshian, Michael Plit, Jayd Lynch, Raj Jagavkar, Helen Ormandy, John Christodouleas, Florian Pietzsch, Michael Chan, Michael G Jameson   +17 more
doaj   +1 more source

Influence of beam quality on reference dosimetry correction factors in magnetic resonance guided radiation therapy

Physics and Imaging in Radiation Oncology, 2020
Correction factors for reference dosimetry in magnetic resonance (MR) imaging-guided radiation therapy (kB→,M,Q) are often determined in setups that combine a conventional 6 MV linac with an electromagnet. This study investigated whether results based on
Stefan Pojtinger, Marcel Nachbar, Ralf-Peter Kapsch, Daniela Thorwarth   +3 more
doaj   +1 more source

MR-linac: role of artificial intelligence and automation. [PDF]

Strahlenther Onkol
Abstract The integration of artificial intelligence (AI) into radiotherapy has advanced significantly during the past 5 years, especially in terms of automating key processes like organ at risk delineation and treatment planning. These innovations have enhanced consistency, accuracy, and efficiency in clinical practice. Magnetic resonance (MR)
Psoroulas S, Paunoiu A, Corradini S, Hörner-Rieber J, Tanadini-Lang S.   +4 more
europepmc   +4 more sources

Is MRI-Linac helpful in SABR treatments for liver cancer?

Frontiers in Oncology, 2023
ObjectiveTo determine the MRI-Linac added value over conventional image-guided radiation therapy (IGRT) in liver tumors Stereotactic ablative radiation therapy (SABR).Materials and methodsWe retrospectively compared the Planning Target Volumes (PTVs ...
Agnès Tallet, Agnès Tallet, Jean-Marie Boher, Marguerite Tyran, Hugues Mailleux, Gilles Piana, Mohamed Benkreira, Pierre Fau, Naji Salem, Laurence Gonzague, Claire Petit, Julien Darréon   +11 more
doaj   +1 more source