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Attenuation coefficient implemented on the Aplio i-series ultrasound system (Canon Medical Systems, Japan). The attenuation coefficient values are color-coded, allowing the visualization of areas of artifacts and to avoid including them in the measurement box. The reliability of the measurement is displayed as an R^2 value, which is a coefficient of determination, and the best quality of the measurement is obtained with an R^2 ≥ 0.90.
