Biomedical Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro-RJ, Brazil.
Brazilian Air Force Academy, Pirassununga-SP, Brazil.
Ultrasound Med Biol. 2021 Mar;47(3):454-470. doi: 10.1016/j.ultrasmedbio.2020.11.014. Epub 2020 Dec 19.
Supersonic shear imaging is a non-invasive technique used for detecting physiologic and pathologic changes in biological tissues. In this study, supersonic shear imaging was used to measure and compare shear wave speed (c) and normalized elastic modulus (E) values of skin with and skin without dermal striae (DS) in vivo. The values were measured at angles of 0°, 45°, 90° and 315° to the skin tension lines. In the presence of DS, a statistically significant reduction in the elasticity dermis was observed (p value <0.05). The mean values of c and E for STLs were higher in normal skin at 45° (4.26 ± 1.05 m/s and 56.23 ± 25.31 kPa) and 90° (4.26 ± 0.55 m/s and 54.91 ± 14.22 kPa), and those for DS were also higher at 45° (3.59 ± 0.72 m/s and 42.71 ± 27.97 kPa) and 90° (3.52 ± 0.65 m/s and 42.34 ± 31.68 kPa) than at other angles. Supersonic shear imaging was found to be a promising technique in the study of skin with DS. The data obtained in this study are expected to be relevant for future studies using shear wave elastography for the aforementioned purpose.
超声剪切波成像技术是一种用于检测生物组织生理和病理变化的非侵入性技术。在这项研究中，超声剪切波成像技术用于测量和比较体内有和无皮肤条纹（DS）的皮肤的剪切波速度（c）和归一化弹性模量（E）值。这些值是在与皮肤张力线成 0°、45°、90°和 315°的角度下测量的。在存在 DS 的情况下，观察到真皮弹性显著降低（p 值<0.05）。在正常皮肤中，STLs 的 c 和 E 的平均值在 45°（4.26±1.05 m/s 和 56.23±25.31 kPa）和 90°（4.26±0.55 m/s 和 54.91±14.22 kPa）较高，而在 DS 中，45°（3.59±0.72 m/s 和 42.71±27.97 kPa）和 90°（3.52±0.65 m/s 和 42.34±31.68 kPa）的 c 和 E 平均值也较高。超声剪切波成像技术被发现是研究 DS 皮肤的一种很有前途的技术。本研究获得的数据有望为未来使用剪切波弹性成像进行上述研究提供参考。
