Figure 5b:

(a, b) Na¹⁸F PET/CT fusion images at (a) 3 weeks and (b) 6 weeks after MR imaging–guided HIFU ablation. One of two animals at 3 weeks demonstrated a focus of increased uptake at the distal ablation that correlated with a small focus of increased bone density at CT (arrow). Both animals at 6 weeks demonstrated a region of increased uptake at the distal ablation that correlated with a larger focus of new bone density compared with that seen at 3 weeks (arrow).