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@ARTICLE{Zhang:306671,
author = {K. S. Zhang$^*$ and P. A. Glemser$^*$ and C. J. O.
Neelsen$^*$ and M. Wennmann$^*$ and L. T. Rotkopf$^*$ and N.
Netzer$^*$ and C. Meinzer$^*$ and T. Hielscher$^*$ and V.
Weru$^*$ and M. Görtz$^*$ and A. Stenzinger and M.
Hohenfellner and H.-P. Schlemmer$^*$ and D. Bonekamp$^*$},
title = {{R}epeatability and reproducibility of maximum diameter
measurements of prostate lesions on {MRI} with repositioning
and variation of imaging sequences: {A} test-retest study.},
journal = {Magnetic resonance imaging},
volume = {127},
issn = {0730-725X},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {DKFZ-2025-02664},
pages = {110578},
year = {2026},
note = {#EA:E010#LA:E010# / Volume 127, April 2026, 110578},
abstract = {To assess variability of maximum diameter measurements of
prostate lesions in MRI assessing patient repositioning,
rater and sequence effects.Forty-two patients were included
retrospectively, who received a clinical bi-/multiparametric
prostate MRI examination and agreed to have the T2-weighted
(T2WI) and diffusion weighted-imaging (DWI) sequences
scanned twice. Maximum diameter measurements of prostate
lesions mentioned in the clinical radiologist reports were
performed by four readers in multiple reading sessions for
determination of inter-sequence (between two DWI sequences),
inter-scan (between clinical and additional scan),
intra-rater and inter-rater variability. The primary
calculated metrics were the repeatability and
reproducibility coefficient (RC/RDC), including pooled
RC/RDC.Variability measured by RCs/RDCs was lowest for
measurements obtained within the same reading session, with
inter-scan RCs up to 5.6 mm/6.5 mm for T2WI/DWI, pooled RCs
of 4.8 mm/5.8 mm, respectively, and inter-sequence RDCs of
5.4 mm-5.9 mm, pooled RDC 5.8 mm. Measurements performed in
separate reading sessions demonstrated significantly higher
variability for both settings in the majority of cases (RCs:
up to 10.9 mm/11.7 mm/10.2 mm for T2WI/DWI/inter-sequence, p
≤ 0.002), pooled RCs/RDCs 9.2 mm-9.9 mm. Measurements
necessarily generated in different reading sessions, i.e.,
intra-rater or inter-rater, demonstrated high variability
(RCs/RDCs up to 11.4 mm/11.5 mm for T2WI/DWI).Prostate
lesion measurements demonstrate considerable variability.
When measured in one reading session by one rater, lesion
diameter differences below the pooled RCs of 4.8 mm, 95
$\%-CI$ [3.9, 5.6] for T2WI and 5.8 mm, 95 $\%-CI$ [4.7,
7.1] for DWI should not necessarily assumed to be true
biological change, as these differences may result from
measurement- or repositioning-based variability alone.
Caution needs to be taken assessing size changes.},
keywords = {Dimensional measurement accuracy (Other) / Magnetic
resonance imaging (Other) / Observer variation (Other) /
Prostate (Other) / Reproducibility of results (Other)},
cin = {E010 / C060 / E250 / HD01},
ddc = {610},
cid = {I:(DE-He78)E010-20160331 / I:(DE-He78)C060-20160331 /
I:(DE-He78)E250-20160331 / I:(DE-He78)HD01-20160331},
pnm = {315 - Bildgebung und Radioonkologie (POF4-315)},
pid = {G:(DE-HGF)POF4-315},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:41317885},
doi = {10.1016/j.mri.2025.110578},
url = {https://inrepo02.dkfz.de/record/306671},
}