Results 41 to 50 of about 1,697 (196)

System-dependent image distortion related to gantry positions of a 0.35 T MRgRT: Characterization and the corresponding correction [PDF]

, 2022
PURPOSE: MR-guided radiotherapy with high accuracy treatment planning requires addressing MR imaging artifacts that originate from system imperfections.
Cole, Mike, Flores, Rocco, Kim, Taeho, Marasini, Shanti, Quinn, Benjamin   +4 more
core   +2 more sources

Clinical implementation of magnetic resonance imaging guided adaptive radiotherapy for localized prostate cancer

Physics and Imaging in Radiation Oncology, 2019
Background and purpose: Magnetic resonance-guided radiation therapy (MRgRT) has recently become available in clinical practice and is expected to expand significantly in coming years. MRgRT offers marker-less continuous imaging during treatment delivery,
Shyama U. Tetar, Anna M.E. Bruynzeel, Frank J. Lagerwaard, Ben J. Slotman, Omar Bohoudi, Miguel A. Palacios   +5 more
doaj   +1 more source

Why we should care about gas pockets in online adaptive MRgRT: a dosimetric evaluation

Frontiers in Oncology, 2023
IntroductionContouring of gas pockets is a time consuming step in the workflow of adaptive radiotherapy. We would like to better understand which gas pockets electronic densitiy should be used and the dosimetric impact on adaptive MRgRT treatment.Materials and methods21 CT scans of patients undergoing SBRT were retrospectively evaluated.
Matteo Nardini, Guenda Meffe, Matteo Galetto, Luca Boldrini, Giuditta Chiloiro, Angela Romano, Giulia Panza, Andrea Bevacqua, Gabriele Turco, Claudio Votta, Amedeo Capotosti, Roberto Moretti, Maria Antonietta Gambacorta, Maria Antonietta Gambacorta, Luca Indovina, Lorenzo Placidi   +15 more
openaire   +3 more sources

The clinical introduction of MR-guided radiation therapy from a RTT perspective

Clinical and Translational Radiation Oncology, 2019
The latest development in radiation oncology departments towards high precision and adaptive radiation therapy is the clinical introduction of magnetic resonance image guided radiation therapy (MRgRT).
R. Botman, S.U. Tetar, M.A. Palacios, B.J. Slotman, F.J. Lagerwaard, A.M.E. Bruynzeel   +5 more
doaj   +1 more source

Evaluating a novel technology in radiotherapy using digital patient-reported outcomes:The PRO-MR-RT study [PDF]

, 2023
BaggrundI 2018 fik patienter med kræft mulighed for at blive behandlet med online adaptivmagnetisk resonans-guidet strålebehandling. En magnetisk resonans lineær accelerater (MR-linac) er en innovativ teknologi, hvor MR-billeder af høj kvalitet ...
Møller, Pia Krause
core   +1 more source

Delta radiomics analysis of Magnetic Resonance guided radiotherapy imaging data can enable treatment response prediction in pancreatic cancer

Radiation Oncology, 2021
Background Magnetic Resonance Image guided Stereotactic body radiotherapy (MRgRT) is an emerging technology that is increasingly used in treatment of visceral cancers, such as pancreatic adenocarcinoma (PDAC).
M. R. Tomaszewski, K. Latifi, E. Boyer, R. F. Palm, I. El Naqa, E. G. Moros, S. E. Hoffe, S. A. Rosenberg, J. M. Frakes, R. J. Gillies   +9 more
doaj   +1 more source

Dosimetric study for spine stereotactic body radiation therapy: magnetic resonance guided linear accelerator versus volumetric modulated arc therapy

Radiology and Oncology, 2019
Stereotactic body radiation therapy (SBRT) given in 1-5 fractions is an effective treatment for vertebral metastases. Real-time magnetic resonance-guided radiotherapy (MRgRT) improves soft tissue contrast, which translates into accurate delivery of spine
Yadav Poonam, Musunuru Hima B., Witt Jacob S., Bassetti Michael, Bayouth John, Baschnagel Andrew M.   +5 more
doaj   +1 more source

Clinical Outcomes Using Magnetic Resonance–Guided Stereotactic Body Radiation Therapy in Patients With Locally Advanced Cholangiocarcinoma

Advances in Radiation Oncology, 2020
Purpose: Previous studies have shown that stereotactic ablative radiation therapy (SABR) increases local control for cholangiocarcinoma, but gastrointestinal toxicity resulting from this treatment approach remains a concern. SABR using magnetic resonance–
Elaine Luterstein, BS, Minsong Cao, PhD, James M. Lamb, PhD, Ann Raldow, MD, MPH, Daniel Low, PhD, Michael L. Steinberg, MD, Percy Lee, MD   +6 more
doaj   +1 more source

Intra‐frame motion deterioration effects and deep‐learning‐based compensation in MR‐guided radiotherapy [PDF]

, 2023
Background Current commercially available hybrid magnetic resonance linear accelerators (MR-Linac) use 2D+t cine MR imaging to provide intra-fractional motion monitoring.
Brenner, Jakob, Kurz, Christopher, Landry, Guillaume, Paganelli, Chiara, Palaniappan, Prasannakumar, Riboldi, Marco, Sui, Zhuojie   +6 more
core   +2 more sources

Quantitative investigation of dose accumulation errors from intra-fraction motion in MRgRT for prostate cancer [PDF]

Physics in Medicine & Biology, 2021
Abstract Accurate spatial dose delivery in radiotherapy is frequently complicated due to changes in the patient’s internal anatomy during and in-between therapy segments. The recent introduction of hybrid MRI radiotherapy systems allows unequaled soft-tissue visualization during radiation delivery and can be used for dose reconstruction ...
Bosma, Lando, Zachiu, Cornel, Ries, Mario, Denis de Senneville, Baudouin, Raaymakers, Bas   +4 more
openaire   +4 more sources