A pen like device for contactless imaging of the electrical conductivity of a target tissue during a surgery to different between cancerous cells and normal cells. The device operation is based on the principal of conductivity imaging by a magnetic induction. The device has a cylindrical transmitter coil and two receiver coils that are wound on a cylindrical rod of an electrically insulating material. The measured contactless conductivity through a non-electrically conductive wall of the device's body is displayed on a rotatable screen to help surgeons to make immediate decisions during a surgery.
