SPECT Acquisition Parameters
| Parameter | Standard or optional |
| Camera type | |
| NaI(Tl) Anger multidetector | Standard |
| CZT or CsI(Tl) dedicated cardiac camera | Optional |
| Energy peak | |
| 201Tl: 70 and 167 keV | Standard |
| 99mTc: 140 keV | Standard |
| Energy window | |
| 201Tl: 30% and 20% | Standard |
| 99mTc: 20% | Standard |
| Collimator | |
| LEHR 99mTc-labeled agents | Standard |
| Converging | Optional |
| Multipinhole | Optional |
| Patient position | |
| Supine | Standard |
| Prone | Optional |
| Sitting | Optional |
| Reclined | Optional |
| Camera set-up of 45° RAO to 45° LPO | Standard |
| 180° camera orbit | Standard |
| Circular or noncircular orbit | Standard |
| Pixel size of 6.4 ± 0.4 mm | Standard |
| 64 projections for 99mTc-labeled agents; 32 for 201Tl | Standard |
| Injection-to-scan time | |
| 99mTc agents, rest: 30–45 min p.i. | Standard |
| 99mTc agents, stress: 15 min p.i. (exercise) or 30–45 min p.i. (pharm stress) | Standard |
| Thallium, rest: 20 min p.i. | Standard |
| Thallium, stress: 10–15 min p.i. (both exercise and pharm stress) | Standard |
| Acquisition type | |
| Step and shoot | Standard |
| Continuous dynamic SPECT | Optional |
| 64 × 64 matrix | Standard |
| Time per projection | |
| Rest: 25 s | Standard |
| Stress: 20 s | Standard |
| Electrocardiography-gated | Standard |
| Frames per cycle | |
| 8 | Standard |
| 16 | Optional |
| 32 | Optional |
| 100% R–R interval | Standard |
LEHR = low-energy high resolution; RAO = right anterior oblique; LPO = left anterior oblique; p.i. = after injection; pharm = pharmacologic.