Method and device for producing images of heating tines near a tissue part

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.