Protocol for Ammonia Cardiac Perfusion Study with Cine CT
| Steps | Time | Notes |
|---|---|---|
| Prepare patient (14) | ||
| Acquire scout scan | <1 min | |
| Rest study | ||
| Perform first resting cine CT attenuation correction | <1 min | |
| Administer NH3 (370–740 MBq) | ||
| Acquire resting dynamic PET study | 4 min | For myocardial blood flow quantitation |
| Acquire resting cardiac gated PET study | 15 min | For qualitative perfusion assessment |
| Perform second resting cine CT attenuation correction | <1 min | |
| Wait for isotope decay | ∼20 min | 40 min between injections |
| Stress study | ||
| Administer dipyridamole | 4 min | 0.56 mg/kg over 4 min |
| Perform first stress cine CT attenuation correction | <1 min | |
| Administer NH3 (555–925 MBq) | ||
| Acquire stress dynamic PET study | 4 min | For myocardial blood flow quantitation |
| Acquire stress cardiac gated PET study | 15 min | For qualitative perfusion assessment |
| Perform second stress cine CT attenuation correction | <1 min | |
| Total acquisition time | ∼80 min |