Peroperative sensing head adapted to be coupled to an ablation tool

The present invention has a probe head (21), relates to a probe (2) into the trap to which it shows an excision instrument, and is the head, a radioactive tracer in an organization field -- and -- or at least one optical fiber (2121, 2123) which performs guidance to reception and an analytical instrument (32) of a signal which were emitted by fluorescence molecule, Thereby, some organizations in the organization field to which the excision instrument emits the signal are removable including an attaching means (2112) which attaches the head (21) on the excision instrument (1).