Final answer:
N-13 ammonia is used in diagnostic nuclear medicine, particularly in PET scans to evaluate cardiac blood flow. Its half-life is approximately 9.97 minutes.
Step-by-step explanation:
N-13 ammonia is used in diagnostic nuclear medicine. It is often used in positron emission tomography (PET) scans to evaluate cardiac blood flow. The N-13 ammonia is injected into the patient, and the PET scanner detects the radiation emitted by the radioactive nuclei of N-13 ammonia, providing detailed images of blood flow to the heart.
The half-life of N-13 ammonia is approximately 9.97 minutes. This means that half of the radioactive nuclei of N-13 ammonia will decay or become non-radioactive after 9.97 minutes. It is important to consider the half-life when using N-13 ammonia in medical imaging procedures.
=