%0 Journal Article
%A Zhang, Kevin Sun
%A Glemser, Philip Alexander
%A Neelsen, Christian Jan Oliver
%A Wennmann, Markus
%A Rotkopf, Lukas Thomas
%A Netzer, Nils
%A Meinzer, Clara
%A Hielscher, Thomas
%A Weru, Vivienn
%A Görtz, Magdalena
%A Stenzinger, Albrecht
%A Hohenfellner, Markus
%A Schlemmer, Heinz-Peter
%A Bonekamp, David
%T Repeatability and reproducibility of maximum diameter measurements of prostate lesions on MRI with repositioning and variation of imaging sequences: A test-retest study.
%J Magnetic resonance imaging
%V 127
%@ 0730-725X
%C Amsterdam [u.a.]
%I Elsevier Science
%M DKFZ-2025-02664
%P 110578
%D 2026
%Z #EA:E010#LA:E010# / Volume 127, April 2026, 110578
%X 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 
%K Dimensional measurement accuracy (Other)
%K Magnetic resonance imaging (Other)
%K Observer variation (Other)
%K Prostate (Other)
%K Reproducibility of results (Other)
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:41317885
%R 10.1016/j.mri.2025.110578
%U https://inrepo02.dkfz.de/record/306671