Settings for Acquisition and Data Processing for the 3 Methods
Method | |||
Setting | A | B | C |
Radiopharmacy | 99mTc-sestamibi | 99mTc-sestamibi | 99mTc-UltraTag (Mallinckrodt Inc.) |
Dose (±2 SDs) | 650 ± 50 MBq | 650 ± 50 MBq | 740 ± 45 MBq |
Collimator | SMARTZOOM | SMARTZOOM | LEHR |
Bins per cardiac cycle | 8 | 8 | 16 |
Acquisition time | 5 min | 5 min | 20 min |
Matrix | 128 × 128 | 128 × 128 | 64 × 64 |
Pixel size | 4.8 mm | 4.8 mm | 5.4 mm |
Zoom | 1 | 1 | 1.78 |
Camera position | 2 detectors, 208°, 17 views | 2 detectors, 208°, 17 views | Single-head 45° left anterior oblique/best septal separation between ventricles by adjustment |
Processing software | 4DMSPECT | 4DMSPECT | Siemens esoft (MIApps) |
Reconstruction algorithm | Iterative Flash3D (15i2s) | Iterative Flash3D (12i1s) | — |
Filtering | Gaussian 10 mm | Gaussian 10 mm | Low-pass filtering |