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. Author manuscript; available in PMC: 2024 Jun 1.
Published in final edited form as: Ultrasound Med Biol. 2023 Mar 4;49(6):1401–1407. doi: 10.1016/j.ultrasmedbio.2023.01.019

Table 1.

Acoustic properties of the tissue phantom layers measured in this study at 22°C, 1MHz and reference values for water and soft tissues are provided. Five measurements (technical replicates) in one representative sample per barium concentration were performed.

Water Sample-N Sample-1.5 Sample-3 Sample-6 Soft Tissue
Density (kg/m3) 998 1040 1010 1020 1040 1050
Sound Speed (m/s) 1488 1514±0.3 1508±1.7 1503±0.2 1491±1.2 1480–1560
Impedance (MRayl) 1.48 1.57±0.00 1.52±0.00 1.53±0.00 1.55±0.00 1.61
Attenuation (dB/cm/MHz) 0.002 0.04±0.00 0.27±0.02 0.48±0.00 0.94±0.03 0.4–0.7