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. 2024 Sep 29;14(19):2171. doi: 10.3390/diagnostics14192171

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© 2024 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Scatter plot of AC-5A and AC-5M (A), and AC-3A and AC-5M (B), with linear equation. Dots represent values of attenuation coefficient and the position of each dot on the horizontal and vertical axis indicates values for an individual data point. The continuous red line constitutes the best fit line with the continuous grey lines representing the 95% confidence interval, while the black dashed line indicates the perfect correlation (Y = 0 + 1 × X). AC-5M, attenuation coefficient (median of five measurements); AC-5A, attenuation coefficient (average of five measurements); AC-3A, attenuation coefficient (average of 3 measurements); dB/cm/MHz, decibel/centimeter/megahertz.