The invention relates to a head for imaging and treating an organ or tissue of a living organism, which is suitable for the treatment of thyroid or prostate tumors. The head comprises: an ultrasound probe for emitting waves or radiation in order to supply an image of the tissue or organ to be treated and a treatment mechanism for treating the tissue or organ locally, where the treatment mechanism emits waves or radiation to treat same. The ultrasonic probe divides the treatment mechanism into two parts that are substantially symmetrically identical in relation to the ultrasonic probe.
