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Table 1 Estimated focal pressures of H-108 in water and in gel using a modified KZK equation [17]

From: The effects on thermal lesion shape and size from bubble clouds produced by acoustic droplet vaporization

Input voltage
V
In water In gel
Compressional pressure
MPa
Rarefactional pressure
MPa
Compressional pressure
MPa
Rarefactional pressure
MPa
20 7.3 − 5.3 5.0 − 3.7
25 10.4 − 6.8 7.0 − 4.7
30 12.2 − 7.6 8.3 − 5.3
35 15.6 − 8.7 10.6 − 6.1
40 18.9 − 9.7 12.8 − 6.8
45 23.0 − 10.7 15.5 − 7.5
150 136.9 − 15.9 105.8 − 13.8
  1. The water density, the sound speed and sound attenuation coefficient in water used for calculations were 993 kg/m3, 1523.7 m/s [18] and 0.04 Np/m [19], respectively. The phantom density, sound speed and sound attenuation coefficient in phantom used were 995 kg/m3 [20], 1543 m/s [20] and 6.8 Np/m [20], respectively