Technical Parameters of PEM Camera (5)
| Parameter | Characteristic |
| Acquisition | |
| Views | Anterior and posterior images of hands and feet |
| Field of view (x–y plane) | 24 × 16.8 cm (maximum) |
| Field of view (z direction) | Patient-dependent (maximum up to 19 cm) |
| Compression force | 67 newton for breast view, patient-dependent for hand and foot view |
| Scan duration | Variable (typically 10 min) |
| Reconstruction | |
| Coincidence timing window | 6 ns |
| Energy window | 350–750 keV |
| Acceptance angle | 25 crystals; angle varies with paddle separation |
| Algorithm | Iterative 3-dimensional maximum-likelihood expectation maximization |
| Number of iterations | 5 |
| Corrections | Detector normalization and geometric efficiency; no corrections for randoms, dead-time, attenuation, scatter, or intrascan decay |
| Reconstruction time | Depends on number of counts (typically <15 min) |
| Images | |
| Image matrix | 136 × 200 |
| Pixel size | 1.2 × 1.2 mm |
| Resolution | 2.4 mm in full width at half maximum |
| Number of slices | 12 |
| Slice thickness | 1/12 detector separation |
| Units | μCi/cm3 or PEM uptake value |