Fig. 1

Segmentation of the pituitary gland and adjacent structures. A–F, Pituitary gland (blue) and pituitary tumor (yellow) segmentation using PET registered with MRI. G, 3D rendered model of pituitary gland (white structure) and pituitary tumor (yellow structure). H–J, Bone segmentation from CT using thresholding tool. K, 3D rendered model of bone after removal of small islands and imaging bed. L–M, Carotid arteries segmentation with FSPGR MR using thresholding tool. N, Initial 3D rendered segmentation of MR soft tissue. O, Final segmentation of carotid arteries after unwanted structures have been removed