Fig. 1From: Application accuracy of a frameless optical neuronavigation system as a guide for craniotomies in dogsComponents of the optical neuronavigation system “NAV 1 pico”. The frameless optical neuronavigation system “NAV 1 pico” (Karl STORZ, Tuttlingen, Deutschland) consists of a dual infrared camera system (A, black arrow), a special neuronavigation software (A, asterisk), a patient tracker with the reflective spheres (B) and the probe with the reflective elements (C)Back to article page