Investigation of autosegmentation techniques on T2‐weighted MRI for off‐line dose reconstruction in MR‐linac workflow for head and neck cancers

BA McDonald, CE Cardenas, N O'Connell… - Medical …, 2024 - Wiley Online Library
Background In order to accurately accumulate delivered dose for head and neck cancer
patients treated with the Adapt to Position workflow on the 1.5 T magnetic resonance …

[HTML][HTML] Clinical acceptance and dosimetric impact of automatically delineated elective target and organs at risk for head and neck MR-Linac patients

V Koteva, B Eiben, A Dunlop, A Gupta, T Gangil… - Frontiers in …, 2024 - frontiersin.org
Background MR-Linac allows for daily online treatment adaptation to the observed geometry
of tumor targets and organs at risk (OARs). Manual delineation for head and neck cancer …

Head and neck cancer patient images for determining auto‐segmentation accuracy in T2‐weighted magnetic resonance imaging through expert manual …

CE Cardenas, ASR Mohamed, J Yang… - Medical …, 2020 - Wiley Online Library
Purpose The use of magnetic resonance imaging (MRI) in radiotherapy treatment planning
has rapidly increased due to its ability to evaluate patient's anatomy without the use of …

Cascaded deep learning‐based auto‐segmentation for head and neck cancer patients: organs at risk on T2‐weighted magnetic resonance imaging

JC Korte, N Hardcastle, SP Ng, B Clark, T Kron… - Medical …, 2021 - Wiley Online Library
Purpose To investigate multiple deep learning methods for automated segmentation (auto‐
segmentation) of the parotid glands, submandibular glands, and level II and level III lymph …

The feasibility of atlas‐based automatic segmentation of MRI for H&N radiotherapy planning

K Wardman, RJD Prestwich… - Journal of Applied …, 2016 - Wiley Online Library
Atlas‐based autosegmentation is an established tool for segmenting structures for CT‐
planned head and neck radiotherapy. MRI is being increasingly integrated into the planning …

Atlas-based auto-segmentation of CT images in head and neck cancer: What is the best approach?

MS Hoogeman, X Han, D Teguh, P Voet… - International Journal of …, 2008 - redjournal.org
Results Similarity metrics did not or moderately correlate with the accuracy of the auto-
segmentation (median R2 of 0.2, range, 0.0-0.7). The mean Dice coefficient/STSD (mm) of …

Transfer learning for auto‐segmentation of 17 organs‐at‐risk in the head and neck: Bridging the gap between institutional and public datasets

B Clark, N Hardcastle, LA Johnston, J Korte - Medical Physics, 2024 - Wiley Online Library
Background Auto‐segmentation of organs‐at‐risk (OARs) in the head and neck (HN) on
computed tomography (CT) images is a time‐consuming component of the radiation therapy …

Accuracy of automatic structure propagation for daily magnetic resonance image-guided head and neck radiotherapy

RL Christiansen, J Johansen, R Zukauskaite… - Acta …, 2021 - Taylor & Francis
Background and purpose Deformable image registration (DIR) and contour propagation are
used in daily online adaptation for hybrid MRI linac (MRL) treatments. The accuracy of the …

Deep learning‐based auto segmentation using generative adversarial network on magnetic resonance images obtained for head and neck cancer patients

D Kawahara, M Tsuneda, S Ozawa… - Journal of Applied …, 2022 - Wiley Online Library
Purpose Adaptive radiotherapy requires auto‐segmentation in patients with head and neck
(HN) cancer. In the current study, we propose an auto‐segmentation model using a …

Clinical validation of atlas-based auto-segmentation of multiple target volumes and normal tissue (swallowing/mastication) structures in the head and neck

DN Teguh, PC Levendag, PWJ Voet… - International Journal of …, 2011 - Elsevier
PURPOSE: To validate and clinically evaluate autocontouring using atlas-based
autosegmentation (ABAS) of computed tomography images. METHODS AND MATERIALS …