The invention refers to an apparatus allowing to determine a planned position of a temperature probe during a planning for an ablation procedure. The apparatus comprises an ablation plan providing unit 121 for providing an ablation plan, wherein the ablation plan comprises geometric information of an ablation region and of a protection region. The protection region should be protected from ablation. The geometric information comprises information on a position and shape of a respective region. A temperature probe position determination unit 122 is adapted to determine a planned position of the temperature probe, wherein the planned position of the temperature probe is determined based on the geometric information of the ablation region and of the protection region. The apparatus allows to increase the protection of regions that should be protected, like a specific organ, such that the security of an ablation procedure for a patient can also be increased.
