Technical challenges of real-time adaptive MR-guided radiotherapy

D Thorwarth, DA Low - Frontiers in oncology, 2021 - frontiersin.org
In the past few years, radiotherapy (RT) has experienced a major technological innovation
with the development of hybrid machines combining magnetic resonance (MR) imaging and …

Magnetic field induced dose effects in radiation therapy using MR‐linacs

CY Huang, B Yang, WW Lam, H Geng… - Medical …, 2023 - Wiley Online Library
MR‐guided radiotherapy (MRgRT) is one of the most significant advances in radiotherapy in
recent years. The hybrid systems were designed to visualize patient anatomical and …

Development and evaluation of a GEANT4‐based Monte Carlo Model of a 0.35 T MR‐guided radiation therapy (MRgRT) linear accelerator

AU Khan, EA Simiele, R Lotey, LA DeWerd… - Medical …, 2021 - Wiley Online Library
Purpose The aim of this work was to develop and benchmark a magnetic resonance (MR)‐
guided linear accelerator head model using the GEANT4 Monte Carlo (MC) code. The …

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

M Nachbar, D Mönnich, O Dohm, M Friedlein… - Physics and Imaging in …, 2021 - Elsevier
Background and purpose Hybrid magnetic resonance linear accelerator (MR-Linac) systems
represent a novel technology for online adaptive radiotherapy. 3D secondary dose …

Extension and validation of a GPU‐Monte Carlo dose engine gDPM for 1.5 T MR‐LINAC online independent dose verification

Y Li, S Ding, B Wang, H Liu, X Huang… - Medical Physics, 2021 - Wiley Online Library
Purpose To extend and validate the accuracy and efficiency of a graphics processing unit
(GPU)‐Monte Carlo dose engine for Elekta Unity 1.5 T Magnetic Resonance‐Linear …

Feasibility of using a commercial collapsed cone dose engine for 1.5 T MR-LINAC online independent dose verification

Y Li, B Wang, S Ding, H Liu, B Liu, Y Xia, T Song… - Physica Medica, 2020 - Elsevier
Purpose To validate the feasibility and accuracy of commonly used collapsed cone (CC)
dose engine for Elekta Unity 1.5 T MR-LINAC online independent dose verification …

Development and clinical application of a GPU‐based Monte Carlo dose verification module and software for 1.5 T MR‐LINAC

B Cheng, Y Xu, S Li, Q Ren, X Pei, K Men… - Medical …, 2023 - Wiley Online Library
Background Adaptive radiotherapy (ART) has made significant advances owing to magnetic
resonance linear accelerator (MR‐LINAC), which provides superior soft‐tissue contrast, fast …

An independent Monte Carlo–based IMRT QA tool for a 0.35 T MRI‐guided linear accelerator

AU Khan, EA Simiele, R Lotey… - Journal of Applied …, 2023 - Wiley Online Library
Purpose To develop an independent log file–based intensity‐modulated radiation therapy
(IMRT) quality assurance (QA) tool for the 0.35 T magnetic resonance‐linac (MR‐linac) and …

Dosimetry in 1.5 T MR‐Linacs: Monte Carlo determination of magnetic field correction factors and investigation of the air gap effect

V Margaroni, EP Pappas, A Episkopakis… - Medical …, 2023 - Wiley Online Library
Abstract Background In Magnetic Resonance‐Linac (MR‐Linac) dosimetry formalisms, a
new correction factor, kB, Q, has been introduced to account for corresponding changes to …

Experimental determination of magnetic field correction factors for ionization chambers in parallel and perpendicular orientations

S Pojtinger, M Nachbar, S Ghandour… - Physics in Medicine …, 2020 - iopscience.iop.org
Magnetic field correction factors are needed for absolute dosimetry in magnetic resonance
(MR)-linacs. Currently experimental data for magnetic field correction factors, especially for …