Results 91 to 100 of about 1,697 (196)

MR-guided adaptive versus ITV-based stereotactic body radiotherapy for hepatic metastases (MAESTRO): a randomized controlled phase II trial

Radiation Oncology, 2022
Background Stereotactic body radiotherapy (SBRT) is an established local treatment method for patients with hepatic oligometastasis or oligoprogression. Liver metastases often occur in close proximity to radiosensitive organs at risk (OARs).
P. Hoegen, K. S. Zhang, E. Tonndorf-Martini, F. Weykamp, S. Regnery, P. Naumann, K. Lang, J. Ristau, S. A. Körber, C. Dreher, C. Buchele, C. Rippke, C. K. Renkamp, K. M. Paul, L. König, C. Büsch, J. Krisam, O. Sedlaczek, H.-P. Schlemmer, M. Niyazi, S. Corradini, J. Debus, S. Klüter, J. Hörner-Rieber   +23 more
doaj   +1 more source

A novel Cherenkov radiation removal method for plastic scintillator detectors in a 0.35 T MR‐Linac

Journal of Applied Clinical Medical Physics, Volume 26, Issue 8, August 2025.
Abstract Purpose This study evaluates methods for removing Cherenkov radiation (CR) from plastic scintillation detectors (PSDs), focusing on constraints specific to a 0.35 T MR‐Linac system. Methods Five CR‐removal methods were examined: cross calibration, fiber alone, multiloop, collimator rotation, and couch rotation.
Mateb Al Khalifa, Tianjun Ma, Haya Aljuaid, Siyong Kim, William Y. Song   +4 more
wiley   +1 more source

Impact of the Lorentz force on electron track structure and early DNA damage yields in magnetic resonance-guided radiotherapy

Scientific Reports, 2022
Magnetic resonance-guided radiotherapy (MRgRT) has been developed and installed in recent decades for external radiotherapy in several clinical facilities.
Yoshie Yachi, Takeshi Kai, Yusuke Matsuya, Yuho Hirata, Yuji Yoshii, Hiroyuki Date   +5 more
doaj   +1 more source

Impact of magnetic fields on small field dosimetry for parallel MR‐linacs

Medical Physics, Volume 52, Issue 8, August 2025.
Abstract Background The use of MR‐guided radiation therapy (MRgRT) is increasing with the introduction of commercially‐available parallel MR‐linac systems. Treatment fields used by these machines can be very small and highly modulated. Literature on the small field dosimetry of parallel MR‐linacs and the impact of the magnetic field on dose ...
Ahtesham Ullah Khan
wiley   +1 more source

Development of patient-reported outcomes item set to evaluate acute treatment toxicity to pelvic online magnetic resonance-guided radiotherapy

Journal of Patient-Reported Outcomes, 2021
Background A new technology in cancer treatment, the MR-linac, provides online magnetic resonance-guided radiotherapy (MRgRT) that combines real-time visualization of the tumor and surrounding tissue with radiation therapy to deliver treatment more ...
P. K. Møller, H. Pappot, U. Bernchou, T. Schytte, K. B. Dieperink, Pia Krause Møller   +5 more
doaj   +1 more source

Impact of daily plan adaptation on accumulated doses in ultra-hypofractionated magnetic resonance-guided radiation therapy of prostate cancer [PDF]

Background and purpose: Ultra-hypofractionated online adaptive magnetic resonance-guided radiotherapy (MRgRT) is promising for prostate cancer. However, the impact of online adaptation on target coverage and organ-at-risk (OAR) sparing at the level of ...
Belka, Claus, Corradini, Stefanie, Hörner-Rieber, Juliane, Kawula, Maria, Klüter, Sebastian, Kurz, Christopher, Landry, Guillaume, Nierer, Lukas, Niyazi, Maximilian, Rabe, Moritz, Rippke, Carolin, Xiong, Yuqing   +11 more
core   +1 more source

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

Journal of Applied Clinical Medical Physics, Volume 26, Issue 7, July 2025.
Abstract 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
wiley   +1 more source

Beam model development and clinical experience with RadCalc for treatment plan quality assurance in online adaptive workflow with an MR‐linac

Journal of Applied Clinical Medical Physics, Volume 26, Issue 7, July 2025.
Abstract Purpose The aim of this work was to report on the optimization, commissioning, and validation of a beam model using a commercial independent dose verification software RadCalc version 7.2 (Lifeline Software Inc, Tyler, TX, USA), along with 4 years of experience employing RadCalc for offline and online monitor unit (MU) verification on the ...
Urszula Jelen, Zoë Moutrie, Jack D Aylward, Michael G Jameson   +3 more
wiley   +1 more source

Online adaptive magnetic resonance guided radiotherapy for pancreatic cancer: state of the art, pearls and pitfalls

Radiation Oncology, 2019
Background Different studies have proved in recent years that hypofractionated radiotherapy (RT) improves overall survival of patients affected by locally advanced, unresectable, pancreatic cancer.
Luca Boldrini, Davide Cusumano, Francesco Cellini, Luigi Azario, Gian Carlo Mattiucci, Vincenzo Valentini   +5 more
doaj   +1 more source

Investigation of time-resolved volumetric MRI to enhance MR-guided radiotherapy of moving lung tumors [PDF]

, 2022
In photon radiotherapy of lung cancer, respiratory-induced motion introduces systematic and statistical uncertainties in treatment planning and dose delivery.
Rabe, Moritz
core