Table 3 SPECT acquisition protocol for GC-1 and GC-2.
System | GE NM 530c (GC-1) | GE Ventri (GC-2) | ||
|---|---|---|---|---|
Collimator | 19 Pinhole Collimators | Low Energy High Resolution (LEHR) | ||
Radionuclide | Tc-99 m | Tc-99 m | ||
Energy window width | 140.5 ± 10% keV | 140 ± 10% keV | ||
Phase | Stress | Rest | Stress | Rest |
Protocol | SGATE LD | RGATE LD | SGATE EVOLUTION | RGATE EVOLUTION |
Gated | Yes | Yes | Yes | Yes |
Position | Supine | Supine | Supine | Supine |
Contour | Not Applicable | Not Applicable | Circular | Circular |
Acquisition Mode | Static | Static | Step and Shoot, 3 intervals over a 180° arc | Step and Shoot, 3 intervals over a 180° arc |
Angle | 315° (fixed) | 315° (fixed) | 45° right anterior oblique to 45° left posterior oblique | 45° right anterior oblique to 45° left posterior oblique |
Direction | Not Applicable | Not Applicable | Counter-clockwise | Counter-clockwise |
Gating parameter | 8 frames per cycle | 8 frames per cycle | 8 frames per cycle | 8 frames per cycle |
Zoom | 1.00 | 1.00 | 1.00 | 1.00 |
Matrix size | 32 × 32 | 32 × 32 | 64 × 64 | 64 × 64 |
Time per view | 5 min | 3 min | 13 s | 10 s |
Total view | Not applicable | Not applicable | 30 steps, 60 views | 30 steps, 60 views |
Total acquisition time | 5 min | 3 min | 7 min 7 s | 8 min 40 s |
