N13

Question 1

What is the half-life of N13?

Answer 1

10 minutes

Question 2

What are the energies of N13?

Answer 2

1.19 MeV (positron) and 511 keV (gamma)

Question 3

N13 Ammonia

Answer 3

It is indicated for diagnostic imaging of the myocardium under rest or pharmacologic stress conditions to evaluate myocardial perfusion in patients with suspected or existing coronary artery disease.

Question 4

N13 Ammonia Clinical Pharmacology

Answer 4

It is extracted from the blood in the coronary capillaries into the myocardial cells where it is metabolized to glutamine N-13 and retained in the cells. The presence of ammonia N13 and glutamine N13 in the myocardium allows for PET imaging of the myocardium.

Question 5

N13 Ammonia Dose & Administration

Answer 5

10-20 mCi through IV

optimal imaging can be achieved between 10-20 minutes after administration.

Question 6

What is N13 Ammonia indicated for?

Answer 6

rest or stress myocardial perfusion

Question 7

What does N13 metabolize into?

Answer 7

Glutamine N13 in the coronary capillaries

Question 8

What type of patients would go under this scan?

Answer 8

Patients suspected of coronary artery disease.