Figure 5: Bone scintigraphy. (a) Normal study (left): Symmetric uptake of the tracer. Areas due to proximity to the camera, more intense such as iliac wings and SI region. Presence of renal activity as technetium-99 m methylene diphosphonate is cleared through the renal system (Image courtesy: Nuclear Medicine, CMC Vellore). (b) Osseous metastases (right): 78 M – Metastatic prostate carcinoma, serum alkaline phosphatase – 1698, PSA – 396. Asymmetric irregular intense tracer uptake scattered involving the axial and appendicular skeleton (Image courtesy: Nuclear Medicine, CMC Vellore).