Sowa Yoshihiro, Yokota Isao, Itsukage Sizu, Nakatsukasa Katsuhiko, Sakaguchi Koichi, Taguchi Tetsuya, Numajiri Toshiaki
Department of Plastic and Reconstructive Surgery, Kyoto Prefectural University of Medicine, Graduate School of Medical Sciences, Kyoto, Japan.
Department of Biostatistics, Kyoto Prefectural University of Medicine, Graduate School of Medical Sciences, Kyoto, Japan.
Clin Hemorheol Microcirc. 2017;66(1):1-6. doi: 10.3233/CH-16210.
Capsular contracture around implants is a common complication after breast reconstruction. Strain elastography (STE) and shear-wave elastography (SWE) are noninvasive imaging techniques that can measure tissue stiffness and thickness of the capsule.
The purposes of the study were to compare STE and SWE for measurement of capsular contracture after breast implant reconstruction using intra-class correlation coefficients (ICCs) and to investigate the correlation of these data with the Baker score, which is the most frequently used clinical staging scale for capsule contracture.
The subjects were 20 patients (27 implants) who underwent breast reconstruction.
The reproducibility of SWE (ICC: 0.878) was higher than that of STE (ICC: 0.724) for measurement of capsular contracture. The correlation coefficient between measurements with the two methods was low (r = 0.6788). The Baker score had a higher correlation with measurements with SWE (r = 0.8124) compared to those with STE (r = 0.6983).
These results suggest that SWE is a better tool for assessment of the degree of capsule contracture surrounding implants after breast reconstruction.
乳房重建术后植入物周围的包膜挛缩是一种常见并发症。应变弹性成像（STE）和剪切波弹性成像（SWE）是能够测量组织硬度和包膜厚度的非侵入性成像技术。
本研究旨在使用组内相关系数（ICC）比较STE和SWE在测量乳房植入物重建后包膜挛缩方面的效果，并研究这些数据与贝克评分（Baker score）的相关性，贝克评分是包膜挛缩最常用的临床分期量表。
研究对象为20例接受乳房重建的患者（27个植入物）。
在测量包膜挛缩方面，SWE的可重复性（ICC：0.878）高于STE（ICC：0.724）。两种方法测量结果之间的相关系数较低（r = 0.6788）。与STE测量结果（r = 0.6983）相比，贝克评分与SWE测量结果的相关性更高（r = 0.8124）。
这些结果表明，SWE是评估乳房重建后植入物周围包膜挛缩程度的更好工具。
