Fig. 7From: Preoperative SPECT/CT + intraoperative CT fusion enabling surgical augmented reality to target sentinel lymph node in endometrial cancerGraphical representation of the normalized barycenter distance method. b1 barycenter of the surface s1 of the simulated sentinel lymph node visualized by augmented reality, b2 barycenter of the surface s2 of the simulated sentinel lymph node visualized in the endoscopic image, d the distance between the two barycenters b1 and b2 and r the theoretical radius of the surface s1Back to article page