Table 4. Average elastic moduli, dissipated energy ratios and Hounsfield units.

	Liver model and fluid-filled specimens (n = 1 + 3)	Full silicone specimens (n = 3)	Liver tissue (based on[35,36,49,50])
Initial elastic modulus (kPa) (E1 on Figure 7, at 0%–3% strain)	260	370	Approximately 100 (target in this study)
Final elastic modulus (kPa) (E2 on Figure 7, at 22%–27% strain)	190	250	N/A
Dissipated energy ratio (–) of first loading cycle (0%–7.5% strain)	N/A	N/A	Approximately 0.6 ± 0.1
Dissipated energy ratio (–) of second loading cycle (0%–15% strain)	0.140	0.118
Dissipated energy ratio (–) of third loading cycle (0%–22.5% strain)	0.167	0.093
Dissipated energy ratio (–) of fourth loading cycle (0%–30% strain)	0.183	0.081
HU of fluid-filled internal structure of liver model	225 ± 30	N/A	Approximately 70 ± 30
HU of bulk outer shell of liver model	340 ± 50	N/A