Results 31 to 40 of about 649,932 (223)

Repeatability of rectal cancer apparent diffusion coefficient measurements on a 1.5 T MR-linac [PDF]

Phys Imaging Radiat Oncol
H. Eijkelenkamp, G. Grimbergen, B. McDonald, R. Rutgers, T. Schakel, Casper Beijst, M. Philippens, Gert Meijer, M. Intven   +8 more
semanticscholar   +2 more sources

Deep learning-based automatic contour quality assurance for auto-segmented abdominal MR-Linac contours [PDF]

Phys Med Biol
Objective. Deep-learning auto-segmentation (DLAS) aims to streamline contouring in clinical settings. Nevertheless, achieving clinical acceptance of DLAS remains a hurdle in abdominal MRI, hindering the implementation of efficient clinical workflows for ...
M. Zarenia, Ying Zhang, C. Sarosiek, R. Conlin, A. Amjad, Eric S Paulson   +5 more
semanticscholar   +2 more sources

Development and implementation of an MRI-only simulation, planning, and treatment workflow for prostate radiotherapy using synthetic CT on MR-linac. [PDF]

J Appl Clin Med Phys
Abstract Purpose We evaluated the feasibility of a magnetic resonance (MR)‐only simulation, planning, and treatment (MROSPT) workflow for prostate cancer patients using synthetic computed tomography (sCT) generated from magnetic resonance imaging (MRI) data.
Reiazi R, Ding Y, Vijayan S, Yang J, Subashi E, Zhao Y, Lee BM, Emory HL, Dinh VT, Swiedom GL, Deng J, Lin MH, Balter P, Kudchadker RJ, Cha EE, Choi S, Kim Y, Han EY, Prajapati S.   +18 more
europepmc   +2 more sources

MR-Linac is a better choice for adaptive therapy compared to cone-beam CT. [PDF]

Med Phys
F. Alongi, Dandan Zheng, Indra J. Das
semanticscholar   +2 more sources

Identification and mitigation of unexplained dose attenuation caused by sub-table water accumulation in an MR-Linac (Elekta Unity). [PDF]

J Appl Clin Med Phys
Abstract Purpose To report and investigate a case of significant dose attenuation observed during quality assurance (QA) of an Elekta Unity MR‐Linac system, and to elucidate its root cause and solution. Methods During a period of abnormal environmental conditions (elevated temperature and humidity), a >20% dose output reduction was detected at a gantry
Chen J, Li Y, An X, Li Z.
europepmc   +2 more sources

A bias field correction workflow based on generative adversarial network for abdominal cancers treated with 0.35T MR-LINAC. [PDF]

J Appl Clin Med Phys
Abstract Purpose In this study, a bias field correction workflow was proposed to improve the flexibility and generalizability of the generative adversarial network (GAN) model for abdominal cancer patients treated with a 0.35T magnetic resonance imaging linear accelerator (MR‐LINAC) system.
Yang CC, Yang HT.
europepmc   +2 more sources

Automatic 3D Monte-Carlo-based secondary dose calculation for online verification of 1.5 T magnetic resonance imaging guided radiotherapy

Physics and Imaging in Radiation Oncology, 2021
Background and purpose: Hybrid magnetic resonance linear accelerator (MR-Linac) systems represent a novel technology for online adaptive radiotherapy.
Marcel Nachbar, David Mönnich, Oliver Dohm, Melissa Friedlein, Daniel Zips, Daniela Thorwarth   +5 more
doaj   +1 more source

Prospective Evaluation of In Vivo and Phantom Repeatability and Reproducibility of Diffusion-Weighted MRI Sequences on 1.5 T MRI-Linear Accelerator (MR-Linac) and MR Simulator Devices for Head and Neck Cancers [PDF]

, 2023
INTRODUCTION: Diffusion-weighted imaging (DWI) on MRI-linear accelerator (MR-linac) systems can potentially be used for monitoring treatment response and adaptive radiotherapy in head and neck cancers (HNC) but requires extensive validation. We performed
Ahmed, Sara, Boss, Michael, Christodouleas, John, Dresner, Alex, Fuller, Clifton D, He, Renjie, McDonald, Brigid A, Mohamed, Abdallah S R, Mulder, Samuel, Philippens, Marielle, Preston, Kathryn, Salzillo, Travis, Shukla Dave, Amita, Thorwarth, Daniela, van Houdt, Petra, Wang, Jihong   +15 more
core   +5 more sources

Redefining radiotherapy for early-stage breast cancer with single dose ablative treatment: a study protocol [PDF]

, 2017
Contains fulltext : 181789.pdf (publisher's version ) (Open ...
A. J. Witkamp, B. van Asselen, C. H. van Gils, E. van der Wall, H. J. G. D. van den Bongard, H. M. Verkooijen, M. E. P. Philippens, M. G. G. Hobbelink, M. van Vulpen, P. J. van Diest, R. K. Charaghvandi, R. Koelemij, R. M. Pijnappel, T. C. van Heijst, T. van Dalen   +14 more
core   +5 more sources

Commissioning measurements on an Elekta Unity MR-Linac [PDF]

Physical and Engineering Sciences in Medicine, 2022
Abstract Magnetic resonance-guided radiotherapy technology is relatively new and commissioning publications, quality assurance (QA) protocols and commercial products are limited. This work provides guidance for implementation measurements that may be performed on the Elekta Unity MR-Linac (Elekta, Stockholm ...
Marcus Powers, John Baines, Robert Crane, Chantelle Fisher, Stephen Gibson, Linda Marsh, Bronwyn Oar, Ariadne Shoobridge, Emily Simpson-Page, Marchant Van der Walt, Glenn de Vine   +10 more
openaire   +3 more sources