Lecture 27 Thermal conductivity,Blood Perfusion Measurement
Lecture 27 Thermal conductivity, Blood Perfusion Measurement
Measurement principle Small amount heat deposition Temperature increament =V.kVT+d, (pc).t Heat transfer due to conduction kt Geometry B.C.5 Model predicted temp. Measured temp Comparison LSR Fit, adjustment of kt kt
Measurement principle Small amount heat deposition Temperature increament Heat transfer due to conduction kt Model predicted temp. Measured temp Comparison LSR Fit, adjustment of kt kt Geometry B.C.S ( )t tp T c kTq t
qp 之IU.0-T.oP←Minimi-ation n=1 T T.(t)-f(k) 之++大大子××一T(t) Tm(t) △T(t)~fn(ke+△k,) △Te To tp min △kt
2 1 , [ ( ) ( )] () ( ) () ( ) N e m n e nt e n te t T t T t Minimization Tt f k Tt f k k T T 0 t t p T e(t) q p T m(t) △ T e min △ kt
blood perfusion Small amount heat deposition (pc) =V.kVT+ 81 Temperature increament (pc)6",(T。-T,)+9p Heat transfer due to conduction(kt)& advection (wb) Geometry B.C.5 Model predicted temp. Measured temp decay Comparison LSR Fit, adjustment of wb,kt wb,kt
blood perfusion Small amount heat deposition Temperature increament Heat transfer due to conduction (kt) & advection (wb) Model predicted temp. Measured temp decay Comparison LSR Fit, adjustment of wb, kt wb, kt Geometry B.C.S ( ) () ( ) t t bb a t p T c kT t c wT T q