What are the photon energies of 99Mo?

The photon energies of 99Mo (Molybdenum-99) are significant in nuclear medicine because they relate to the radiopharmaceuticals used in diagnostic imaging. 99Mo is a parent isotope that decays to produce 99mTc (technetium-99m), which is widely used because of its favorable properties, including its photon emissions.

In particular, 99Mo emits gamma photons primarily at energies around 740 keV and 780 keV. These energies are critical for the subsequent imaging processes, as they allow for effective detection using gamma cameras and other imaging modalities.

The values provided in the correct answer reflect the known and documented decay characteristics of 99Mo. This makes them essential for accurate quality control and calibration in nuclear medicine applications. Understanding the photon energies of isotopes like 99Mo is vital for technicians and radiologists to ensure proper imaging protocols and to optimize patient safety and diagnostic efficacy.