A device and program that models physical parameters respresentative of a probe in proximity to body tissue during an ablation procedure performed by the probe. The device and program also measures a subgroup of the physical parameters during a non-ablation stage of the ablation procedure so as to generate measured non-ablative values the subgroup, and measuring the subgroup of the physical parameters during an ablation stage of the ablation procedure so as to generate measured ablative values of the subgroup. In response to the modeling, the device and program generates calculated non-ablative values the subgroup for the non-ablation stage, and generating calculated ablative values of the subgroup for the ablation stage. Subsequently, device and program compares the measured non-ablative values with the calculated non-ablative values, and compares the measured ablative values with the calculated ablative values, so as generate optimal values for the physical parameters.
