Fig. 4
From: Automatic rigid image Fusion of preoperative MR and intraoperative US acquired after craniotomy
Patient individual mean Target Registration Error (TRE in mm) determined by means of convergence test simulating a set of perturbations of the initial rigid alignment of each MR-US pair (TRE initial), measuring the spatial registration after proposed automatic Rigid Image Fusion (RIF), and in light of best possible fusion accuracy considering determined landmarks as reference only (Landmark Based Fusion, LBF).