Results 51 to 60 of about 1,467 (148)

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

Commissioning and performance evaluations of the electron Monte Carlo algorithm in a new commercial treatment planning system

Journal of Applied Clinical Medical Physics, Volume 27, Issue 8, August 2026.
Abstract Purpose This study provides a comprehensive evaluation of the newly implemented electron Monte Carlo dose calculation algorithm in the commercial treatment planning system, uTPS. It investigates the performance of the algorithm by examining its dosimetric accuracy and calculation speed, which have not been previously reported in the literature.
Feng Wang, Xuming Jiang, Zhi Shi, Yanfang Liu, Yibin Zhang, Jiayi Chen   +5 more
wiley   +1 more source

Dosimetric correlation between exit dose maps and anatomical changes in head and neck cancer treatment on Halcyon‐E: A gamma analysis approach

Journal of Applied Clinical Medical Physics, Volume 27, Issue 8, August 2026.
Abstract Background Head and neck cancer (HNC) has a high incidence in Brazil. Although Image‐Guided Radiation Therapy (IGRT) improves treatment precision, anatomical changes during the treatment course may compromise dose distribution and require replanning.
Jayane Julia Pereira da Silva, Caio Weber Mendanha Ribeiro, Jaime Luiz Ludwig, Daniela Rocha Medrado, Bruno Nunes Melo da Silva, Ayane Cristine Alves Sarmento, Edilmar de Moura Santos   +6 more
wiley   +1 more source

Delivery of online adaptive magnetic resonance guided radiotherapy based on isodose boundaries

Physics and Imaging in Radiation Oncology, 2021
Magnetic Resonance-guided Radiotherapy (MRgRT) allows direct monitoring of treated volumes. The aim of this study was to investigate the feasibility of a new gating strategy consisting in using an isodose as boundary.
Claudio Votta, Davide Cusumano, Luca Boldrini, Nicola Dinapoli, Lorenzo Placidi, Gabriele Turco, Marco Valerio Antonelli, Veronica Pollutri, Angela Romano, Luca Indovina, Vincenzo Valentini   +10 more
doaj   +1 more source

Image‐based evaluation of a commercial AI synthetic CT generator for brain and prostate MR‐only radiotherapy

Journal of Applied Clinical Medical Physics, Volume 27, Issue 8, August 2026.
Abstract Background Synthetic CTs (sCT) were developed to provide electron density information for MR‐only treatment planning. Some AI‐based sCT generators have received FDA‐clearance and better capture tissue heterogeneity through voxel‐wise mappings to improve image guidance and dose calculation.
Morgan Aire, Carson Matthews, Joshua Jones, David Duong, Christopher Schneider, Sotirios Stathakis, Olivia Shay, Krystal Kirby   +7 more
wiley   +1 more source

Magnetic Resonance Imaging-Guided Radiation Therapy for Early-Stage Gastric Mucosa-Associated Lymphoid Tissue Lymphoma

, 2022
Lymphoid neoplasia derived from mucosa-associated lymphoid tissue (MALT; also abbreviated as MALToma) is most commonly seen in the stomach. Radiotherapy (RT) is indicated in early-stage disease as a standard of care.
Gungor, Gorkem, Atalar, Banu, Dincer, Neris, Zoto Mustafayev, Teuta, Ozyar, Enis, Ugurluer, Gamze, Mustafayev, Teuta Zoto   +6 more
core   +1 more source

Quantitative evaluation of respiratory motion‐induced blurring in expiratory‐phase CBCT for pancreatic SBRT

Journal of Applied Clinical Medical Physics, Volume 27, Issue 8, August 2026.
Abstract Background Cone‐beam computed tomography (CBCT) is widely used in image‐guided radiotherapy because it reflects the patient's anatomy immediately before treatment. However, CBCT images of the abdominal organs, including the pancreas, are often degraded by respiratory motion.
Airi Nukushina, Ryota Yamada, Takaaki Yoshimura, Norio Katoh, Kentaro Nishioka, Hiroshi Tamura, Masataka Kitagawa, Keiji Kobashi, Takahiro Kanehira, Hidefumi Aoyama, Takayuki Hashimoto   +10 more
wiley   +1 more source

Evaluating synthetic CT from deformable registration in directed adaptive radiotherapy for head and neck cancer

Journal of Applied Clinical Medical Physics, Volume 27, Issue 8, August 2026.
Abstract Background and purposel Anatomical changes over the many weeks of radiotherapy for Head and Neck cancer patients can compromise the original treatment plan, potentially increase the risk of side effects and impact outcomes. It is difficult to decide, based on daily imaging alone, which patients will most benefit from adapted treatment plans ...
Jessica Lye, Kartik Kumar, Benjamin Harris, Jarrod Prohasky, Leah McDermott, Simon Goodall, Jothy Selvaraj, Lauren Natoli, Morikatsu Wada, Sweet Ping Ng   +9 more
wiley   +1 more source

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

The effect of density overrides on magnetic resonance-guided radiation therapy planning for lung cancer

Physics and Imaging in Radiation Oncology, 2018
Background and Purpose: Inverse treatment planning for lung cancer can be challenging since density heterogeneities may appear inside the planning target volume (PTV).
Oliver Schrenk, Claudia Katharina Spindeldreier, Daniela Schmitt, Falk Roeder, Mark Bangert, Lucas Norberto Burigo, Asja Pfaffenberger   +6 more
doaj   +1 more source