Fig. 1From: Feasibility of multi-parametric magnetic resonance imaging combined with machine learning in the assessment of necrosis of osteosarcoma after neoadjuvant chemotherapy: a preliminary studyPathological manifestations of osteosarcoma after NACT. The tissue samples were classified as five types microscopically including (a) non-cartilaginous tumor viable areas, (b) cartilaginous tumor viable areas, (c) non-cartilaginous tumor necrotic areas, (d) blood space areas and (e) tumor post-necrotic collagenized areas. (original magnification of a, c, e × 200, b × 400, d × 50; H&E stain)Back to article page