Fig. 1

79-year old male with Grade Group 5 (Gleason 5 + 4) prostate cancer. Anterior (a) and posterior d stills of a 3D bone map with trabecular bone attenuation coefficients mapped to the surface (legend left of image a). Anterior (c) and posterior (f) isotope bone scans and axial CT images (b and e) are shown from the same date. Dark blue areas on the bone maps correspond to areas of sclerosis, well-demonstrated in the left pubis (black arrows a, b, c, d & f) and right acetabulum (white arrows d, e & f). Anterior view of the same patient’s 3D bone map 24 months later (g) demonstrates particular progression in the right ilium (white arrow) and L2 vertebra (black arrow), also demonstrated on the original CT(h) and contemporaneous BS(i)