Comparison of Some PET Image–Quality Indicators for Different Scanners
| Scanner | Uniformity SD (%) | Spillover ratio (%) | Recovery coefficient (%) | |||
| Water | Air | 5 mm | 3 mm | 1 mm | ||
| nanoScan PET/MRI, 3D OSEM | 3.5 | 6.2 | 5.8 | 103 | 90 | 26 |
| Inveon (Siemens) (14), FORE + 2D FBP | 5.3 | 1.7 | −0.6 | 93 | 72 | 17 |
| microPET Focus 120 (Siemens) (13), FORE + 2D FBP | 6.0 | 1.8 | −0.3 | 93 | 75 | 15 |
| Argus (former Vista) (Sedecal) (13), 3D OSEM | 6.0 | 15 | 13 | 97 | 93 | 27 |
OSEM = ordered-subset expectation maximization; FORE = Fourier rebinning; FBP = filtered backprojection.