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@ARTICLE{Walter:298917,
author = {A. Walter$^*$ and C. Bauer$^*$ and A. K. Yawson$^*$ and P.
Hoegen-Saßmannshausen$^*$ and S. Adeberg and J. Debus$^*$
and O. Jäkel$^*$ and M. Frank and K. Giske$^*$},
title = {{A}ccuracy of an articulated head-and-neck motion model
using deep learning-based instance segmentation of skeletal
bones in {CT} scans for image registration in radiotherapy},
journal = {Computer methods in biomechanics and biomedical
engineering},
volume = {13},
number = {1},
issn = {2168-1163},
address = {Abingdon},
publisher = {Taylor $\&$ Francis},
reportid = {DKFZ-2025-00353},
pages = {2455752},
year = {2025},
note = {#EA:E040#LA:E040#},
abstract = {Knowing about anatomical deformations in patient images is
crucial for adaptive image-guided radiation therapy.
Biomechanical models ensure biofidelity in deformable image
registration, but manual contouring limits their clinical
use. We investigate the application of automatically
generated contours for a biomechanical registration model in
head and neck cancer treatment. For that, we automatically
generate individual bone segmentations on planning CT scans
examining a custom-trained nnU-Net model and the
ready-trained TotalSegmentator model. Both sets of
segmentations are evaluated using DICE, Hausdorff Distance
and surface DICE. We investigate their impact on the
build-up of the biomechanical articulated skeleton model by
deviations in joint positioning and CT-CT registration
accuracy using target registration error (TRE). The
custom-trained model achieves 1.51 ± 0.26 mm TRE, with no
significant difference in registration accuracy. While the
TotalSegmentator does not provide all structures needed for
the complete biomechanical model build-up. Overall, deep
learning–based automatic bone segmentation can replace
manual contouring in this model, matching its performance.},
cin = {E040 / E050},
ddc = {570},
cid = {I:(DE-He78)E040-20160331 / I:(DE-He78)E050-20160331},
pnm = {315 - Bildgebung und Radioonkologie (POF4-315)},
pid = {G:(DE-HGF)POF4-315},
typ = {PUB:(DE-HGF)16},
doi = {10.1080/21681163.2025.2455752},
url = {https://inrepo02.dkfz.de/record/298917},
}