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Table 1 Values for the various parameters of the liver tissue

From: Identification of the blood perfusion rate for laser-induced thermotherapy in the liver

Parameter [unit]Value
general 
tissue density ρ [kg/m3]1.08 × 103
universal gas constant R [J/(mol K)]8.31
total laser power \(\hat{q}_{\mathrm{app}}\) [W]22
\(t_{\mathrm{on}}\) [s]25
\(t_{\mathrm{off}}\) [s]1175
end of treatment \(\tau _{{\mathrm {end}}}\) [s]1200
perfusion rate in a blood vessel \(\xi _{\mathrm{max}}\) [W/(K m3)]6 × 104
thermal 
heat conductivity κ [W/(m K)]0.48
specific heat capacity \(C_{p}\) [J/(m K)]3.69 × 103
heat transfer coefficient \(\alpha _{{\mathrm {cool}}}\) [W/(K m2)]250
heat transfer coefficient \(\alpha _{{\mathrm {amb}}}\) [W/(K m2)]0
coolant absorption factor \(\beta _{q}\) [1]0.14
initial temperature \(T_{0}\) [°C]21.8
cooling temperature \(T_{{\mathrm {cool}}}\) [°C]20
blood temperature \(T_{{\mathrm {b}}}\) [°C]21.8
ambient temperature \(T_{{\mathrm {amb}}}\) [°C]21.8
optical (native) 
absorption coefficient \(\mu _{an}\) [1/m]50
scattering coefficient \(\mu _{sn}\) [1/m]8 × 103
anisotropy factor \(g_{n}\) [1]0.97
optical (coagulated) 
absorption coefficient \(\mu _{ac}\) [1/m]60
scattering coefficient \(\mu _{sc}\) [1/m]3 × 104
anisotropy factor \(g_{c}\) [1]0.95
tissue damage 
frequency factor A [1/s]3.1 × 1098
activation energy \(E_{a}\) [J/mol]6.28 × 105
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