tissue ablation model by comsol
Concerning the tumor ablation model, can someone tell how to get the volume of tissue heated within an isothermal surface. In the model an isothermal surface of 50˚C was done after 8minutes, however, I...
View ArticleRe: tissue ablation model by comsol
Ejiro, Under Definitions/Component Coupling/Integration, define operator “intop1” on the domain Geometric level. Then define variable volume_iso=intop1(T>=50[degC]) to get the volume of tissue...
View ArticleRe: tissue ablation model by comsol
I later wanted to plot the isothermal volume in temperature ranges: 40˚C<T<50˚C vs time. I do this but get a straight line (attached). I used this on the expression section:...
View ArticleRe: tissue ablation model by comsol
Ejiro, To calculate this volume use to following expression: intop1(T>=40[degC])-intop1(T>=50[degC]) Regards, Sergei
View ArticleRe: tissue ablation model by comsol
Thanks again. How can I calculate thermal dose for the tissue ablation model using COMSOL. The mathematical calculation for thermal dose is attached. I ultimately want to plot the thermal dose as a...
View ArticleRe: tissue ablation model by comsol
Ejiro, To calculate thermal dose: -add Domain ODEs and DAEs node -add Distributed ODE sub-node and define source term as f=(1/3600)*(0.25*(T<=Tr)+0.5*(T>Tr))^(Tr-T). Leave damping and mass...
View ArticleRe: tissue ablation model by comsol
Thanks. Yes I had to add another study step. How do I get a 2D plot of this data. I seem to be having trouble calling the solution of the thermal dose in the result node.
View ArticleRe: tissue ablation model by comsol
Ejiro, Make sure that solver set up for the thermal dose calculation step is correct. In the Values of Dependent Variables section, check the box “Values of variables not solved for”. From Method...
View ArticleRe: tissue ablation model by comsol
Thanks Sergei for the response. Unfortunately I have still not gotten the results. I attached the steps I took in finding the thermal dose. Is there something I missed?
View ArticleRe: tissue ablation model by comsol
Ejiro, Not sure why you are getting incorrect result but if you are still not able to resolve the issue then you might try to calculate the thermal damage integral in the post-processing using operator...
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