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Table 2 Summary of the acoustic properties of soft and bone tissue mimicking materials

From: Acoustic and thermal characterization of agar based phantoms used for evaluating focused ultrasound exposures

  Brain Tissue Mimicking Agar Gel
Agar 2% (w/v)
+ Silica Dioxide 1.2% (w/v)
+ Evaporated Milk 25% (v/v)
Muscle Tissue Mimicking Agar Gel
Agar 2% (w/v)
+ Silica Dioxide 2.1% (w/v)
+ Evaporated Milk 40% (v/v)
Bone Mimicking Material
ABS-M30 (Stratasys Ltd)
Attenuation Coefficient
Scatter enhancing agent
(dB/cm-MHz)
0.34 ± 0.04 0.59 ± 0.07 -
Attenuation Coefficient
Absorption enhancing agent (dB/cm-MHz)
0.25 ± 0.03 0.40 ± 0.04 -
Attenuation Coefficient
Total (dB/cm-MHz)
0.59 ± 0.05 0.99 ± 0.08 16.01 ± 6.18
Acoustic speed (m/s) 1485 ± 12 1529 ± 13 2048 ± 79
Mass Density (g/cm3) 1.05 ± 0.01 1.07 ± 0.01 1.04 [38]
Acoustic Impedance(MRayl) 1.56 ± 0.02 1.64 ± 0.02 2.13 ± 0.08