Results 41 to 50 of about 1,655,128 (141)

IGRT: The role of radiation therapists in MR-guided radiotherapy

, 2022
Thema: IGRT: Die Rolle der Radiologietechnolog:innen in der magnetresonanzgeführten Strahlentherapie. Problem: Die klinische Einführung von magnetresonanzgeführten Linearbeschleunigersystemen (MR-Linac) hat zu großen Veränderungen in den Arbeitsabläufen ...
Tahiri, Rozafa
core   +2 more sources

Adaptive magnetic resonance-guided neurovascular-sparing radiotherapy for preservation of erectile function in prostate cancer patients

Physics and Imaging in Radiation Oncology, 2021
Background and purpose: Erectile dysfunction is a common adverse effect of external beam radiation therapy for localized prostate cancer (PCa), likely as a result of damage to neural and vascular tissue.
Frederik R. Teunissen, Ruud C. Wortel, Jochem Hes, Thomas Willigenburg, Eline N. de Groot-van Breugel, Johannes C.J. de Boer, Harm H.E. van Melick, Helena M. Verkooijen, Jochem R.N. van der Voort van Zyp   +8 more
doaj   +1 more source

Characterization of radiotherapy component impact on MR imaging quality for an MRgRT system [PDF]

, 2020
Radiotherapy components of an magnetic resonnace-guided radiotherapy (MRgRT) system can alter the magnetic fields, causing spatial distortion and image deformation, altering imaging and radiation isocenter coincidence and the accuracy of dose ...
Green, Olga L, Taeho Kim, Ryan Klett, Lotey, Rajiv, Lewis, Benjamin C, Rajiv Lotey, Olga L. Green, Klett, Ryan, Bruce Gu, Gu, Bruce, Kim, Taeho, Benjamin C. Lewis   +11 more
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System‐dependent image distortion related to gantry positions of a 0.35 T MRgRT: Characterization and the corresponding correction [PDF]

, 2023
PURPOSE: MR-guided radiotherapy with high accuracy treatment planning requires addressing MR imaging artifacts that originate from system imperfections.
Taeho Kim, Quinn, Benjamin, Rocco Flores, Marasini, Shanti, Mike Cole, Benjamin Quinn, Flores, Rocco, Cole, Mike, Kim, Taeho, Shanti Marasini   +9 more
core   +1 more source

Magnetic Resonance Guided Radiotherapy for Head and Neck Cancers

, 2022
Radiotherapy is an integral component of head/neck squamous cell carcinomas (HNSCCs) treatment, and technological developments including advances in image-guided radiotherapy over the past decades have offered improvements in the technical treatment of ...
Benjamin S. Rosen, Michelle L. Mierzwa, Bharat Mittal, Poonam Yadav, Laila A. Gharzai   +4 more
core   +1 more source

Task‐based image quality and dosimetric validation of HyperSight CBCT for adaptive radiotherapy

Journal of Applied Clinical Medical Physics, Volume 27, Issue 9, September 2026.
Abstract Background Cone‐beam computed tomography (CBCT) is increasingly used in adaptive radiotherapy (ART), yet the dosimetric accuracy and image quality of advanced CBCT imaging platforms—such as Halcyon HyperSight 4.0 (HH), which combines an upgraded detector panel with advanced iterative reconstruction, scatter‐correction, and metal‐artifact ...
Byungmoon Park, Taeyoon Kim, Kwan‐Woo Lee   +2 more
wiley   +1 more source

Automated planning architectures for online adaptive radiotherapy: A narrative review of the Ethos and Unity/Monaco platforms

Journal of Applied Clinical Medical Physics, Volume 27, Issue 9, September 2026.
Abstract Online adaptive radiotherapy (OART) modifies treatment plans using anatomy‐of‐the‐day imaging, but successful clinical implementation depends on automated planning strategies that can generate high‐quality plans within the constraints of an online workflow. This narrative review compares the automated planning architectures of the Varian Ethos
Songye Cui, Maria F. Chan, Dandan Zheng
wiley   +1 more source

Inverse‐consistent deformable image registration to propagate biomechanical constraints for online adaptive radiotherapy

Medical Physics, Volume 53, Issue 9, September 2026.
Abstract Background Accurate motion estimation remains a key challenge in adaptive radiotherapy (ART). Voxel‐wise accuracy is required, as registration errors can compromise the treatment quality. Locally constrained image registration is a promising technique to further improve ART treatment, but relies heavily on quick and accurate delineations of ...
T. J. W. Draper, C. Zachiu, B. W. Raaymakers   +2 more
wiley   +1 more source

Optimizing MR-Guided Radiotherapy for Breast Cancer Patients [PDF]

, 2020
Current research in radiotherapy (RT) for breast cancer is evaluating neoadjuvant as opposed to adjuvant partial breast irradiation (PBI) with the aim of reducing the volume of breast tissue irradiated and therefore the risk of late treatment-related ...
Shaitelman, Simona F., Mahmood, Faisal; id_orcid, Braunstein, Lior Z., Lorenzen, Ebbe L., Anandadas, Carmel N., Vasmel, Jeanine E., Groot Koerkamp, Maureen L., Verkooijen, Helena M., Lagendijk, Jan J.W., Philippens, Marielle E.P., Han, Kathy, Mahmood, Faisal, Russell, Nicola S., Keller, Brian M., Philippens, Marielle E. P., Kirby, Anna M., Lagendijk, Jan J. W., De-Colle, Chiara, van den Bongard, H. J.G.Desiree, Houweling, Antonetta C., Koerkamp, Maureen L. Groot, the Breast Tumor Site Group of the International MR-Linac Atlantic Consortium, Breast Tumor Site Group of the International MR-Linac Atlantic Consortium, Vesprini, Danny, Currey, Adam, van den Bongard, H. J. G. Desiree   +24 more
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Target Definition in MR-Guided Adaptive Radiotherapy for Head and Neck Cancer [PDF]

, 2022
SIMPLE SUMMARY: Adaptive radiotherapy for head and neck cancer has become more routine due to an increase in imaging quality and improvement in radiation techniques.
Frank A. Pameijer, Mischa de Ridder, Terhaard, Chris H J, Patricia A. H. Doornaert, Remco de Bree, de Bree, Remco, Chris H. J. Terhaard, Reinders, Floris C. J., Raaijmakers, Cornelis P. J., Marielle E. P. Philippens, Terhaard, Chris H. J., Philippens, Marielle E P, Doornaert, Patricia A. H., Doornaert, Patricia A H, Ridder, Mischa de, Pameijer, Frank A., Cornelis P. J. Raaijmakers, Reinders, Floris C J, Raaijmakers, Cornelis P J, Floris C. J. Reinders, Pameijer, Frank A, de Ridder, Mischa, Bree, Remco de, Philippens, Marielle E. P.   +23 more
core   +1 more source