Table 1.
NEMA spatial resolution of the dPET system
| Spatial resolution | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Measurements 01a | Measurements 02 | |||||||||||
| FWHM | FWTM | FWHM | FWTM | |||||||||
| Direction | 1 cm | 10 cm | 20 cm | 1 cm | 10 cm | 20 cm | 1 cm | 10 cm | 20 cm | 1 cm | 10 cm | 20 cm |
| Axial | 3.96 | 4.83 | NA | 8.37 | 9.45 | NA | 4.14 | 4.72 | 5.81 | 8.51 | 9.30 | 11.76 |
| Transverse (radial) | 4.11 | 4.47 | NA | 8.38 | 8.72 | NA | 4.01 | 4.64 | 5.83 | 8.37 | 8.97 | 10.41 |
| Transverse (tangential) | 4.11 | 4.38 | NA | 8.38 | 8.94 | NA | 4.01 | 4.41 | 4.95 | 8.37 | 8.91 | 10.43 |
Spatial resolution is measured in millimeters with radial offset at 1 cm, 10 cm, and 20 cm
aMeasurement 01 contains all tests except for the radial offset at 20 cm; we repeated all test including the 20 cm offset results as shown in measurements 02