Abstract
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.
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