Results 11 to 20 of about 40,132 (283)

MR-Guided Adaptive Radiotherapy for Bladder Cancer [PDF]

Frontiers in Oncology, 2021
Radiotherapy has an important role in the curative and palliative treatment settings for bladder cancer. As a target for radiotherapy the bladder presents a number of technical challenges.
Adham Hijab, Adham Hijab, Boris Tocco, Boris Tocco, Ian Hanson, Ian Hanson, Hanneke Meijer, Christina Junker Nyborg, Anders Smedegaard Bertelsen, Robert Jan Smeenk, Gillian Smith, Jeff Michalski, Brian C. Baumann, Shaista Hafeez, Shaista Hafeez   +14 more
doaj   +6 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

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

Review of MR-Guided Radiotherapy for Esophageal Cancer. [PDF]

Front Oncol, 2021
In this review, we outline the potential benefits and the future role of MRI and MR-guided radiotherapy (MRgRT) in the management of esophageal cancer. Although not currently used in most clinical practice settings, MRI is a useful non-invasive imaging modality that provides excellent soft tissue contrast and the ability to visualize cancer physiology.
Lee SL, Bassetti M, Meijer GJ, Mook S.
europepmc   +6 more sources

MR-Guided Radiotherapy for Brain and Spine Tumors. [PDF]

Front Oncol, 2021
MRI is the standard modality to assess anatomy and response to treatment in brain and spine tumors given its superb anatomic soft tissue contrast (e.g., T1 and T2) and numerous additional intrinsic contrast mechanisms that can be used to investigate physiology (e.g., diffusion, perfusion, spectroscopy). As such, hybrid MRI and radiotherapy (RT) devices
Maziero D, Straza MW, Ford JC, Bovi JA, Diwanji T, Stoyanova R, Paulson ES, Mellon EA.   +7 more
europepmc   +5 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

Preliminary study of cine-MRI compression in MR-guided radiotherapy. [PDF]

Quant Imaging Med Surg, 2023
Cine-magnetic resonance imaging (MRI) is currently used in real-time tumor tracking during magnetic resonance (MR)-guided radiotherapy. As a type of MRI specified for motion tracking, a few minutes' acquisition results in thousands of 2-dimensional (2D) images.
Shang J, Huang P, Zhang K, Hu Z, Yan H.
europepmc   +3 more sources

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

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

MR-LINAC-Guided Adaptive Radiotherapy for Gastric MALT: Two Case Reports and a Literature Review

Radiation, 2022
It is still very challenging to use conventional radiation therapy techniques to treat stomach tumors, although image-guided radiotherapy, mainly by kV X-ray imaging techniques, has become routine in the clinic.
Yajun Song, Zhenjiang Li, Huadong Wang, Yun Zhang, Jinbo Yue   +4 more
doaj   +1 more source