In the last two decades an important number of image-guided procedures have been developed in order to treat focal liver tumors through ablation in a similar way with the surgical procedure, which is still considered as the curative method for patients with resectable hepatic tumours. Unfortunately this criteria does not apply to all patients and in those cases (nonsurgical patients), the techniques are becoming frequently used as standard independent or adjuvant therapies. Tumour ablation using thermal procedures is now considered as one of the most promising among these alternative ablation therapies. It is the goal of these techniques together with the continuous improvement in technology and increasing clinical experience, to become the treatment of choice for limited liver tumours, challenging surgical resection