Table 1 The percentage increase/decrease for different parameters comparing 8 TOF BSREM reconstructions with reference TOF OSEM reconstructions
| Â | TOF BSREM | ||||||||
|---|---|---|---|---|---|---|---|---|---|
β = 300 | β = 350 | β = 400 | β = 450 | β = 500 | β = 550 | β = 600 | β = 700 | ||
Background SUVmean | 0.0% (0.60) | 0.0% (0.63) | 0.0% (0.65) | 0.1% (0.69) | 0.1% (0.67) | 0.1% (0.69) | 0.1% (0.75) | 0.1% (0.87) | |
Background SUVstd | 22.0% (< 0.01) H | 8.3% (< 0.01) H | −1.0% (0.41) | − 9.2% (< 0.01) L | − 15.2% (< 0.01) L | −18.4% (< 0.01) L | − 21.0% (< 0.01) L | −27.0% (< 0.01) L | |
Small size, low-uptake lesions (N = 8) | SUVmax | 28.0% (0.02) H | 17.7% (0.15) | 8.0% (0.55) | −1.6% (0.74) | − 8.1% (0.25) | −12.8% (0.11) | − 18.1% (0.05) L | − 24.6% (0.02) L |
CR | 32.4% (0.02) H | 20.2% (0.15) | 8.1% (0.55) | − 2.8% (0.74) | −10.0% (0.15) | −15.4% (0.08) | − 21.6% (0.05) L | − 29.3% (0.02) L | |
Medium size, medium uptake lesions (N = 15) | SUVmax | 27.0% (< 0.01) H | 18.6% (< 0.01) H | 14.5% (0.01) H | 10.5% (0.08) | − 0.4% (0.64) | − 3.3% (0.42) | − 5.8% (0.21) | − 10.6% (< 0.01) L |
CR | 28.2% (< 0.01) H | 20.4% (< 0.01) H | 15.6% (0.02) H | 8.8% (0.15) | 0.1% (0.89) | − 2.9% (0.42) | − 5.5% (0.06) | −12.4% (< 0.01) L | |
Large size, high-uptake lesions (N = 17) | SUVmax | 16.3% (< 0.01) H | 11.5% (< 0.01) H | 7.0% (< 0.01) H | 4.1% (0.01) H | 1.8% (0.19) | 0.3% (0.43) | − 1.7% (0.89) | − 4.9% (0.03) L |
CR | 17.4% (< 0.01) H | 12.5% (< 0.01) H | 9.1% (< 0.01) H | 6.2% (< 0.01) H | 2.9% (0.08) | 0.2% (0.46) | − 1.9% (0.71) | − 5.2% (0.02) L | |