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. 2017 Mar 15;12(3):e0173751. doi: 10.1371/journal.pone.0173751

Fig 4. CTNAV trial protocol.

Fig 4

The operator tries to reproduce as accurately as possible the planned trajectory using a navigated procedure (NAV group) or the standard procedure (CT group). The main outcome is the difference in distance and angle between the achieved and the planned trajectories.