Figure 8From: Study on the clinical application of pulsed DC magnetic technology for tracking of intraoperative head motion during frameless stereotaxyFiducial Registration Error (FRE in mm) in the clinical application with head fixation types A, B1, B2, C1 and C2. Data are presented as mean +/- standard deviation (n = 5 patients in B1 and B2; n = 10 patients in A, C1 and C2). FREs in types C1 and C2 were significantly higher than in control group (type A) (* p < 0,05, t test). There was no statistical difference between the two B-type (B1 vs. B2) and the two C-type (C1 vs. C2) procedures (n.s. = p > 0.05)Back to article page