Comparison of In-Plane Resolution (RFWHM × TFWHM) for Different PET Scanners
| In-plane resolution (mm2) | ||||
| Scanner | Standard | 1 cm | 9 cm | 10 cm |
| LFER 150 PET/CT | NU 4-2008 | 3.37 | 7.87 | — |
| ECAT HRRT (Siemens) (14) | NU 2-2001 | 7.52 | — | 9.21 |
| microPET Focus 220 (Siemens) (15) | NU 4-2008 | 3.07 | 10.78 | — |
| NeuroPET/CT (Photo Diagnostic Systems) (16) | NU 2-2012 | 11.20 | — | 16.12 |
| Vereos (Philips) (20) | NU 2-2012 | 17.98 | 19.79 | |
| Discovery MI (GE Healthcare) (21) | NU 2-2012 | 17.18 | — | 24.56 |
Limited axial resolution of filtered backprojection method would distort volume resolution in favor of preclinical systems.
RFWHM = full width at half maximum in radial [R] direction; TFWHM = full width at half maximum in tangential [T] direction.