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Effects of gel pad thickness on skin stiffness evaluation by ultrasonographic strain elastography in normal dogs

Chhay, Sothavy Hanazono, Kiwamu Kitahara, Jo Hori, Ai Miyoshi, Kenjiro Itami, Takaharu Endoh, Daiji Nakade, Tetsuya 北海道大学

2021.05

概要

Gel pads are commonly used for skin ultrasound examination; however, the effect of their thickness on the measured values is unknown. We investigated the effect of pad thickness on skin stiffness measurement in healthy dogs. The skin stiffness of the dorsal neck was measured using a durometer. Ultrasonographic strain elastography was performed with 5-, 10-, and 20-mm-thick pads. Among the strain ratios, muscle/skin (5 mm) showed a significantly positive correlation with skin stiffness. In the strain histogram, AREA (20 mm), CONTRAST (20 mm), MEAN (5, 20 mm), and STANDARD DEVIATION (20 mm) were significantly correlated with skin stiffness. In conclusion, the thickness of the gel pad affects the measurements during skin ultrasonographic strain elastography.

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