1. For each of the three situations below, choose a radio-nuclide from those studied and explain why its attributes make it suitable to the imaging method in question
2. Gamma camera scan to establish kidney function
3. Studying the functioning of the thyroid gland
4. Studying the functioning of the lungs

b) Explain the difference between activity, physical half-life and biological half-life as applied to radionuclides and discuss why these are important concepts to the health of patients