Question

what is the role of radioactive nuclides in medical imaging? they increase image resolution they enhance color contrast they emit radiation that can be detected they reduce image noise

Explanation:

Radioactive nuclides in medical imaging are used because they emit radiation that can be detected by special imaging devices. This allows for visualizing internal body structures and functions. They don't directly increase image resolution, enhance color - contrast or reduce image noise.

Answer:

They emit radiation that can be detected