Results 31 to 40 of about 801,823 (212)

Longitudinal monitoring of Apparent Diffusion Coefficient (ADC) in patients with prostate cancer undergoing MR-guided radiotherapy on an MR-Linac at 1.5 T: a prospective feasibility study

Radiology and Oncology, 2023
Hybrid MRI linear accelerators (MR-Linac) might enable individualized online adaptation of radiotherapy using quantitative MRI sequences as diffusion-weighted imaging (DWI).
Almansour Haidara, Schick Fritz, Nachbar Marcel, Afat Saif, Fritz Victor, Thorwarth Daniela, Zips Daniel, Bertram Felix, Müller Arndt-Christian, Nikolaou Konstantin, Othman Ahmed E, Wegener Daniel   +11 more
doaj   +1 more source

Implementation of Magnetic Resonance Imaging-Guided Radiation Therapy in Routine Care: Opportunities and Challenges in the United States

Advances in Radiation Oncology, 2022
Purpose: Magnetic resonance image (MRI)-guided radiation therapy with the 1.5 Tesla magnetic resonance linear accelerator (MR-Linac) is a rapidly evolving and emerging treatment.
Charisma Hehakaya, MSc, Ankur M. Sharma, MD, Jochem R.N. van der Voort Van Zijp, MD, PhD, Diederick E. Grobbee, MD, PhD, Helena M. Verkooijen, MD, PhD, Enrique W. Izaguirre, PhD, Ellen H.M. Moors, PhD   +6 more
doaj   +1 more source

MR‐linac is the best modality for lung SBRT [PDF]

Journal of Applied Clinical Medical Physics, 2019
The introduction of MR‐linac hybrid modality started a new era in image guidance for radiotherapy. It provides superior soft tissue contrast compared to conventional x‐ray imaging, and offers the ability to track and gate treatment delivery, yet challenges and limitations remain in various aspects.1 Our previous Parallel Opposed issues discussed the ...
Godley, Andrew, Zheng, Dandan, Rong, Yi
openaire   +2 more sources

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

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   +1 more source

Measurement validation of treatment planning for a MR‐Linac [PDF]

Journal of Applied Clinical Medical Physics, 2019
AbstractPurposeThe magnetic field can cause a nonnegligible dosimetric effect in an MR‐Linac system. This effect should be accurately accounted for by the beam models in treatment planning systems (TPS). The purpose of the study was to verify the beam model and the entire treatment planning and delivery process for a 1.5 T MR‐Linac based on ...
Chen, Xinfeng, Paulson, Eric S., Ahunbay, Ergun, Sanli, Aydin, Klawikowski, Slade, Li, X. Allen   +5 more
openaire   +2 more sources

Innovations in MR-Linac Treatment – Physics Perspective [PDF]

, 2023
July 23, 2023 Session I: Strategies for Alternative Online Adaptation Workflows for UnityEric Paulson, PhDAssociate Professor, Radiation Oncology Medical, College of Wisconsin Implementation of Customized Imaging Sequences for MR-Guided Adaptive ...
Lu, Weiguo, PhD, Paulson, Eric, PhD, Fast, Martin, Subashi, Ergys, PhD, Hyer, Daniel, PhD   +4 more
core   +1 more source

The MRI-Linear accelerator (MR-linac) Consortium: evidence based clinical introduction of an innovation in radiation oncology connecting researchers, methodology, data collection, quality assurance and technical development

Frontiers in Oncology, 2016
An international research consortium has been formed to facilitate evidence-based introduction of MR-guided radiotherapy (MR-linac) and to address how the MR-linac could be used to achieve an optimized radiation treatment approach to improve patients ...
Linda G.W. Kerkmeijer, Clifton D. Fuller, Helena M. Verkooijen, Marcel Verheij, Ananya Choudhury, Kevin J. Harrington, Chris Schultz, Arjun Sahgal, Steven J. Frank, Joel Goldwein, Kevin J. Brown, Bruce D. Minsky, Marco van Vulpen   +12 more
doaj   +1 more source

Comparison of treatment plan quality among MRI-based IMRT with a linac, MRI-based IMRT with tri-Co-60 sources, and VMAT for spine SABR.

PLoS ONE, 2019
PurposeThis study compares the plan quality of magnetic-resonance image (MRI)-based intensity modulated radiation therapy (IMRT) using a linac (MR-linac-IMRT), MRI-based IMRT using tri-Co-60 sources (MR-Co-60-IMRT), and volumetric modulated arc therapy ...
Chang Heon Choi, Jin Ho Kim, Jung-In Kim, Jong Min Park   +3 more
doaj   +1 more source

Quantitative analysis of diffusion weighted imaging in rectal cancer during radiotherapy using a magnetic resonance imaging integrated linear accelerator

Physics and Imaging in Radiation Oncology, 2022
Background and purpose: Magnetic resonance imaging integrated linear accelerator (MR-Linac) platforms enable acquisition of diffusion weighted imaging (DWI) during treatment providing potential information about treatment response. Obtaining DWI on these
Manasi Ingle, Matthew Blackledge, Ingrid White, Andreas Wetscherek, Susan Lalondrelle, Shaista Hafeez, Shreerang Bhide   +6 more
doaj   +1 more source

End-to-end validation of the geometric dose delivery performance of MR linac adaptive radiotherapy [PDF]

, 2021
The clinical introduction of hybrid magnetic resonance (MR) guided radiotherapy (RT) delivery systems has led to the need to validate the end-to-end dose delivery performance on such machines. In the current study, an MR visible phantom was developed and
Hansen, Vibeke Nordmark, Bertelsen, Anders, Mahmood, Faisal; id_orcid, Christiansen, Rasmus L.,, Riis, Hans L.,, Tilly, David, Schytte, Tine; id_orcid, Brink, Carsten; id_orcid, Riis, Hans Lynggaard, Tilly, David,, Christiansen, Rasmus Lübeck, Jensen, Henrik R, Hansen, Christian R.,, Brink, Carsten,, Bernchou, Uffe; id_orcid, Bernchou, Uffe,, Jensen, Henrik R.,, Bertelsen, Anders,, Mahmood, Faisal,, Hansen, Christian Rønn; id_orcid, Hansen, Vibeke N.,, Schytte, Tine,   +21 more
core   +1 more source