Patent ID: 8540634

Claim:
A method for ablating a chosen tissue part of tissues located in an area of a body by means of heating tines coupled to a needle, the method comprising the following steps: positioning the needle and deploying the heating tines in said chosen tissue part, pre-heating the chosen tissue part by means of said heating tines to one temperature adapted for inducing localized volume expansion, acquiring ultrasound image data from the pre-heated tissue which indicate the effect of the localized volume expansion, estimating tissue thermal strains from said acquired ultrasound image data and deducing from said estimated tissue thermal strains relative positions of said heating tines to said chosen tissue part, displaying real time images of said area showing the relative positions of said heating tines with respect to said chosen tissue part onto a screen; determining whether to adjust the current position of at least one of the heating tines with respect to said chosen tissue part, and based on said determining, heating the tissues by means of said heating tines to a higher temperature than the one temperature for a required time allowing ablation of said chosen tissue part from said heated tissues through tissue cell destruction.