Fig. 5From: Virtual monoenergetic images from photon-counting spectral computed tomography to assess knee osteoarthritisThree-dimensional displays of the 60 keV monoenergetic for two selected samples. a, left, OA (sample 2); a, right normal (sample 3). White arrows show cartilage defects (top) and calcifications (bottom) on OA. b Illustration of segmented bone cysts (in red) with the semiautomatic region growing tool in OA sample (sample 2)Back to article page