Impedance in RF module & Transmission Line module

Hi !

I am currently on a project. I am trying to model human liver and the reaction of tissues due to the heat. There are models already set up in COMSOL. They are called "tumor_ablation" and "microwave_cancer_therapy" and they are placed in the " Heat transfert module" library.

It's the exact thing that I want but I would like to upgrade it.

I have an electrical modeling of liver, that let me know the impedance in function of the frequency.

So my objective is to use the geometric of the "tumor_ablation" model, using the "microwave_cancer_therapy" physics (especially the RF module), changing the impedance of tissues by my function.

1) Is it possible ? (I mean to change the impedance by my function )

1 bis) Is it possible using the Transmission Line module?

2) If yes , how ?

Thanks for your consideration, it's the first time that I meet this software so I just know few things that I have learned watching COMSOL videos.