Table 1.
Summary of optimal injected activities radiopharmaceutical and acquisition parameters for each cardiac-centered gamma cameras and acquisition protocol
| Gamma cameras | D-SPECT | Alcyone | IQ.SPECT | Conventional Anger camera |
|---|---|---|---|---|
| 99mTechnetium-labeled tracers (usual protocols) | ||||
| Selection of estimated total myocardial counts (scout view) | 0.7–1.3 million counts | 0.7–1.4 million counts | NA | NA |
| Injected activities | ||||
| One-day stress/rest |
Stress, 2.5–3.5 MBq/kg (total IA, 150–300 MBq) Rest, 7.5–10.5 MBq/kg (total IA, 450–900 MBq) |
Stress, 2.5–3.5 MBq/kg (total IA, 150–300 MBq) Rest, 7.5–10.5 MBq/kg (total IA, 450–900 MBq) |
Stress, 2.5–3.5 MBq/kg (total IA, 150–300 MBq) Rest, 7.5–10.5 MBq/kg (total IA, 450–900 MBq) |
Stress, 4 MBq/kg 250–400 MBq (total IA) Rest, 12 MBq/lg 750–1200 MBq (total IA) |
| Two-day stress/rest | Stress or rest, 3–5 MBq/kg (total IA, 180–500 MBq) | Stress or rest, 3–5 MBq/kg (total IA, 180–500 MBq) | Stress or rest, 3–5 MBq/kg (total IA, 180–500 MBq) | Stress or rest, 4–7 MBq/kg (total IA, 300–600 MBq) |
| Viability | 3–5 MBq/kg at rest (total IA: 180–500 MBq) | 3–5 MBq/kg (total IA: 180–500 MBq) | 3–5 MBq/kg (total IA: 180–500 MBq) | Stress or rest, 4–7 MBq/kg (total IA, 300–600 MBq) |
| 99mTc-labeled tracers (ultra-low dose protocols) | ||||
| Selection of estimated total myocardial counts (scout view) | 0.5–0.8 million counts | 0.7–0.9 million counts | NA | NA |
| Injected activities | ||||
| One-day stress/rest |
Stress, 120 MBq Rest, 360 MBq |
Stress, 120 MBq Rest, 360 MBq |
Stress, 100 MBq Rest, 300 MBq |
NA |
| 201Thallium | ||||
| Estimated total myocardial counts (scout view) | 0.5–0.8 million counts | 1.0 million counts | NA | NA |
| Injected activities | ||||
| Stress/redistribution |
Stress, 0.5–1.5 MBq/kg (total IA, 50–90 MBq) (± injection of 37 MBq for redistribution) |
Stress, 0.5–1.5 MBq/kg (total IA, 50–90 MBq) (± injection of 37 MBq for redistribution) |
Stress, 1.0–1.5 MBq/kg (total IA, 74–111 MBq) (± injection of 37 MBq for redistribution) |
Stress, 1.0–1.5 MBq/kg (total IA, 74–111 MBq) (± injection of 37 MBq for redistribution) |
| Viability | 0.5–1.5 MBq/kg at rest (total IA, 50–90 MBq) | 0.5–1.5 MBq/kg at rest (total IA, 50–90 MBq) | 1.0–1.5 MBq/kg at rest (total IA, 50–90 MBq) |
Rest: 1.0–1.5 MBq/kg 74–111 MBq at rest (total IA) |