False-colour scintigram (gamma camera scan) of normal human knees,revealing the joint cartilages in red & white. The gamma scan is a map of radioactivity emitted from an isotope,technetium- 99m,that was injected intravenously into the subject prior to taking the scan. Technetium-99m (Tc-99m) is readily taken up by bone and cartilage & this technique is often used to diagnose secondary bone cancer (metastases). Cancerous bone concentrates the isotope more strongly than normal bone & this shows up as brighter,"hot spots" on a scan | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / CNRI |
Bildgröße: | 5002 px × 3504 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |