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Table 1 Sound speed c, density ρ, impedance z, and acoustic attenuation coefficient α for standard BSA PAG a, TM BSA PAG b with increased acrylamide concentration and added glass beads, and the newly developed BSA PAG in comparison to the values for the human prostate c

From: Experimental study of beam distortion due to fiducial markers during salvage HIFU in the prostate

Material

c (103 m/s)

ρ (103 kg/m3)

z (106 kg/m 2/s)

α (dB/cm)

f (MHz)

BSA PAG

1.54 ± 0.01

1.04 ± 0.02

1.60 ± 0.01

0.58

3.5

TM BSA PAG

1.58 ± 0.01

1.06 ± 0.01

1.67 ± 0.01

1.91

3.5

New BSA PAG

1.55 ± 0.02

1.09 ± 0.02

1.70 ± 0.02

1.10

3.5

Prostate

1.58

1.05

1.66

0.5-1.5

3.5

  1. TM Tissue-mimicking, BSA Bovine Serum Albumin, PAG Polyacrylamide Hydrogel
  2. aLafon et al. [15]
  3. bChoi et al. [20]
  4. cDuck [24]; Worthington et al. [30]