Results 51 to 60 of about 1,655,128 (141)

Comparison of online adaptive and non-adaptive magnetic resonance image-guided radiation therapy in prostate cancer using dose accumulation

Physics and Imaging in Radiation Oncology
Background and purpose: Conventional image-guided radiotherapy (conv-IGRT) is standard in prostate cancer (PC) but does not account for inter-fraction anatomical changes.
Martina Murr, Daniel Wegener, Simon Böke, Cihan Gani, David Mönnich, Maximilian Niyazi, Moritz Schneider, Daniel Zips, Arndt-Christian Müller, Daniela Thorwarth   +9 more
doaj   +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

Daily online contouring and re-planning versus translation-only correction in neurovascular-sparing magnetic resonance-guided radiotherapy for localized prostate cancer

Physics and Imaging in Radiation Oncology, 2022
Neurovascular bundle (NVB) and internal pudendal artery (IPA) sparing during magnetic resonance-guided radiotherapy (MRgRT) for prostate cancer aims for preservation of erectile function.
Frederik R. Teunissen, Jochem R.N. van der Voort van Zyp, Eline N. de Groot-van Breugel, Helena M. Verkooijen, Ruud C. Wortel, Johannes C.J. de Boer   +5 more
doaj   +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

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

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

MR-Guided Radiotherapy for Rectal Cancer: Current Perspective on Organ Preservation [PDF]

, 2021
Online MRI-guided radiotherapy (MRgRT) is one of the most recent technological advances in radiotherapy. MRgRT permits the visualization of tumorous and healthy tissue while the patient is on the treatment table and online daily plan adaptations ...
Intven, Martijn, Boldrini, Luca, Gani, Cihan, Bassetti, Michael, Valentini, Vincenzo   +4 more
core  

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

Daily dosimetric variation between image-guided volumetric modulated arc radiotherapy and MR-guided daily adaptive radiotherapy for prostate cancer stereotactic body radiotherapy

, 2020
Aim: To evaluate differences between MR-guided daily-adaptive RT (MRgRT) and image-guided RT (IGRT) with or without fiducial markers in prostate cancer (PCa) stereotactic body radiotherapy (SBRT) in terms of dose distribution on critical structures ...
Cuccia F., Sicignano G., Vitale C., Rigo M., Figlia V., De Simone A., Ruggieri R., Nicosia L., Ricchetti F., Mazzola R., Naccarato S., Giaj-Levra N., Alongi F.   +12 more
core   +1 more source

Knowledge‐distilled diffusion models for improving cone‐beam CT image quality with meta‐learning under imbalanced data

Medical Physics, Volume 53, Issue 8, August 2026.
Abstract Background Adaptive radiation therapy (ART) relies on daily cone‐beam CT (CBCT), yet its limited image quality hinders accurate dose calculation, particularly under substantial anatomical changes. Purpose To overcome the clinical challenge of scarce paired planning CT (pCT) data versus abundant unpaired CBCTs, we propose a framework driven by ...
Joonil Hwang, Sangjoon Park, Seungryong Cho, Jin Sung Kim   +3 more
wiley   +1 more source