Temperature reconstruction by estimating the thermophysical and optical properties of tissue during interstitial laser heating

A theoretical study was undertaken to evaluate the potential of multiple-parameter dynamic temperature reconstruction during interstitial laser heating. An iterative parameter estimation algorithm is used to reconstruct temperatures, based on Newton-Raphson inversion with Levenberg-Marquardt regularization to compensate for ill-conditioning. The algorithm minimizes errors between model-predicted and measured temperatures at sensor locations to …