Table 3 The comparison of spatial resolution measurement results (FWHM) among uMI550, Siemens Biograph Vision, Philips Vereos, and GE Discovery MI (20 cm AFOV)
Radial distance (mm) | Scanner (crystal size, ring diameter, AFOV) | FWHM (mm) | |||
|---|---|---|---|---|---|
Transverse | Tangential | Radial | Axial | ||
10 | UIH uMI550 (2.76 × 2.76 × 16.3 mm3, 72.2 cm, 24 cm) | 2.94* | 2.91 | 2.98 | 2.97 |
Philips Vereos (4 × 4 × 19 mm3, 76.4 cm, 16.4 cm) | 4.24 | N.A. | N.A. | 4.17 | |
Siemens Biograph Vision (3.2 × 3.2 × 20 mm3, 78 cm, 25.6 cm) | N.A. | 3.6 | 3.5 | 3.5 | |
GE Discovery MI (3.95 × 5.3 × 25 mm3, 74.4 cm, 20 cm) | N.A. | 3.97 | 4.02 | 4.39 | |
100 | uMI550 | N.A. | 3.09 | 3.29 | 2.97 |
Vereos | N.A. | 4.35 | 4.55 | 4.39 | |
Vision | N.A. | 3.9 | 4.5 | 4.3 | |
Discovery MI | N.A. | 4.23 | 5.28 | 5.63 | |
200 | uMI550 | N.A. | 4.08 | 4.14 | 3.13 |
Vereos | N.A. | 4.92 | 5.84 | 4.60 | |
Vision | N.A. | 3.5 | 5.8 | 4.4 | |
Discovery MI | N.A. | 4.67 | 7.54 | 5.70 | |