Results 11 to 20 of about 39,486 (285)

Retrospective review of patient factors impacting free-breathing respiratory motion magnitude for MR-guided radiotherapy [PDF]

Technical Innovations & Patient Support in Radiation Oncology
Patient factors may influence motion management strategy selection for abdominal stereotactic ablative radiotherapy (SABR). This retrospective evaluation investigated the impact of body mass index (BMI), sex, and cirrhosis in 16 patients imaged with cine-
Mairead Daly, Holly Egan, Ananya Choudhury, Ganesh Radhakrishna, Cynthia L. Eccles   +4 more
doaj   +2 more sources

Medical physics challenges in clinical MR-guided radiotherapy. [PDF]

Radiat Oncol, 2020
AbstractThe integration of magnetic resonance imaging (MRI) for guidance in external beam radiotherapy has faced significant research and development efforts in recent years. The current availability of linear accelerators with an embedded MRI unit, providing volumetric imaging at excellent soft tissue contrast, is expected to provide novel ...
Kurz C, Buizza G, Landry G, Kamp F, Rabe M, Paganelli C, Baroni G, Reiner M, Keall PJ, van den Berg CAT, Riboldi M.   +10 more
europepmc   +8 more sources

Patient expectation and experience of MR-guided radiotherapy using a 1.5T MR-Linac. [PDF]

Tech Innov Patient Support Radiat Oncol
Online adaptive MR-guided radiotherapy (MRgRT) is a relatively new form of radiotherapy treatment, delivered using a MR-Linac. It is unknown what patients expect from this treatment and whether these expectations are met. This study evaluates whether patients' pre-treatment expectations of MRgRT are met and reports patients' on-table experience on a 1 ...
de Mol van Otterloo SR, Westerhoff JM, Leer T, Rutgers RHA, Meijers LTC, Daamen LA, Intven MPW, Verkooijen HM.   +7 more
europepmc   +5 more sources

Case Report: MR-LINAC-guided adaptive radiotherapy for gastric cancer

Frontiers in Oncology, 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.
Yajun Song, Yajun Song, Yun Zhang, Huadong Wang, Huadong Wang, Mengyu Zhao, Fada Guan, Zhenjiang Li, Jinbo Yue   +8 more
doaj   +3 more sources

Novel MR-Guided Radiotherapy Elective Rotation for Radiation Oncology Trainees. [PDF]

Cureus, 2020
MR-guided adaptive radiation therapy (RT) is emerging as an integral treatment modality for certain applications and is poised to become an exciting opportunity for greater treatment precision and personalization. However, this is still a relatively nascent technology and only a few institutions and programs have access to this technology for clinical ...
Sim AJ, Frakes JM, Hoffe SE, Wuthrick E, Dilling TJ, Rosenberg S.   +5 more
europepmc   +4 more sources

A body mass index-based method for “MR-only” abdominal MR-guided adaptive radiotherapy

Zeitschrift für Medizinische Physik
Purpose: Dose calculation for MR-guided radiotherapy (MRgRT) at the 0.35 T MR-Linac is currently based on deformation of planning CTs (defCT) acquired for each patient.
Carolin Rippke, C. Katharina Renkamp, Christiane Stahl-Arnsberger, Annette Miltner, Carolin Buchele, Juliane Hörner-Rieber, Jonas Ristau, Jürgen Debus, Markus Alber, Sebastian Klüter   +9 more
doaj   +3 more sources

MR-guided radiotherapy of moving targets [PDF]

Der Radiologe, 2021
Hybrid magnetic resonance (MR) linear accelerators (MR-Linacs) for radiotherapy allow for the visualization and tracking of moving target volumes during the entire treatment. This makes gated treatments possible, decreasing the irradiated volumes and thus sparing healthy tissue from unnecessary radiation dose. Conventionally, tumors that are subject to
C Katharina, Spindeldreier, Sebastian, Klüter, Philipp, Hoegen, Carolin, Buchele, Carolin, Rippke, Eric, Tonndorf-Martini, Jürgen, Debus, Juliane, Hörner-Rieber   +7 more
openaire   +2 more sources

Evaluation of hypofractionated adaptive radiotherapy using the MR Linac in localised pancreatic cancer: protocol summary of the Emerald-Pancreas phase 1/expansion study located at Oxford University Hospital, UK

BMJ Open, 2023
Introduction Online adaptive MR-guided radiotherapy allows for dose escalation to pancreatic cancer while sparing surrounding critical organs. We seek to evaluate the safety of delivering hypofractionated five-fraction, three-fraction and single-fraction
Ben George, James Good, Alexander Ooms, Somnath Mukherjee, Matthew J Parkes, Tim Maughan, Suliana Teoh, Rob Owens, Kwun-Ye Chu, Joe Drabble, Maxwell Robinson, Lynda Swan, Lucinda Griffiths, Killian Nugent   +13 more
doaj   +1 more source

Online adaptive planning for prostate stereotactic body radiotherapy using a 1.5 Tesla magnetic resonance imaging-guided linear accelerator

Physics and Imaging in Radiation Oncology, 2021
Recent advances in integrating 1.5 Tesla magnetic resonance (MR) imaging with a linear accelerator (MR-Linac) allow MR-guided stereotactic body radiotherapy (SBRT) for prostate cancer.
Jinzhong Yang, Sastry Vedam, Belinda Lee, Pamela Castillo, Angela Sobremonte, Neil Hughes, Mustefa Mohammedsaid, Jihong Wang, Seungtaek Choi   +8 more
doaj   +1 more source

CT-guided versus MR-guided radiotherapy: Impact on gastrointestinal sparing in adrenal stereotactic body radiotherapy [PDF]

Radiotherapy and Oncology, 2022
To quantify the indication for adaptive, gated breath-hold (BH) MR-guided radiotherapy (MRgRTBH) versus BH or free-breathing (FB) CT-based image-guided radiotherapy (CT-IGRT) for the ablative treatment of adrenal malignancies.Twenty adrenal patients underwent adaptive IMRT MRgRTBH to a median dose of 50 Gy/5 fractions.
Lori L, Rodriguez, Rupesh, Kotecha, Martin C, Tom, Michael D, Chuong, Jessika A, Contreras, Tino, Romaguera, Diane, Alvarez, James, McCulloch, Robert, Herrera, Rene J, Hernandez, Jairo, Mercado, Minesh P, Mehta, Alonso N, Gutierrez, Kathryn E, Mittauer   +13 more
openaire   +2 more sources