title: Intra-observer reproducibility and diagnostic performance of breast shear-wave elastography in Asian women.
abstract: Our aim was to evaluate intra-observer reproducibility of shear-wave elastography (SWE) in Asian women. Sixty-four breast masses (24 malignant, 40 benign) were examined with SWE in 53 consecutive Asian women (mean age, 44.9 y old). Two SWE images were obtained for each of the lesions. The intra-observer reproducibility was assessed by intra-class correlation coefficients (ICC). We also evaluated various clinicoradiologic factors that can influence reproducibility in SWE. The ICC of intra-observer reproducibility was 0.789. In clinicoradiologic factor evaluation, masses surrounded by mixed fatty and glandular tissue (ICC: 0.619) showed lower intra-observer reproducibility compared with lesions that were surrounded by glandular tissue alone (ICC: 0.937; p < 0.05). Overall, the intra-observer reproducibility of breast SWE was excellent in Asian women. However, it may decrease when breast tissue is in a heterogeneous background. Therefore, SWE should be performed carefully in these cases.
authors.affiliation: Department of Radiology, Yonsei University College of Medicine, Seoul, Korea; Department of Radiology, Wonkwang University Sanbon Hospital.
authors.forename: Hye Young
authors.initials: HY
authors.lastname: Park
authors.affiliation: Biostatistics Collaboration Unit, Medical Research Center, Yonsei University College of Medicine.
authors.forename: Kyung Hwa
authors.initials: KH
authors.lastname: Han
authors.affiliation: Department of Radiology, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Jung Hyun
authors.initials: JH
authors.lastname: Yoon
authors.affiliation: Department of Radiology, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Hee Jung
authors.initials: HJ
authors.lastname: Moon
authors.affiliation: Department of Radiology, Yonsei University College of Medicine, Seoul, Korea. Electronic address: MINES@yuhs.ac.
authors.forename: Min Jung
authors.initials: MJ
authors.lastname: Kim
authors.affiliation: Department of Radiology, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Eun-Kyung
authors.initials: EK
authors.lastname: Kim
mesh_terms: D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000000981:diagnostic imaging*; D054459:Elasticity Imaging Techniques; D005260:Female; D006801:Humans; D008875:Middle Aged; D015588:Observer Variation; D015203:Reproducibility of Results; D056910:Republic of Korea; D012189:Retrospective Studies; D016217:Ultrasonography, Mammary / Q000379:methods*
keywords: Breast; Elastography; Intra-observer reproducibility; Shear-wave elastography; Ultrasonography