Table 2 Contrast results (in percent) for the NEMA phantom with various sphere sizes, with different reconstruction settings and the 1:8 ratio for the Biograph mMR and Biograph mCT
From: Quantitative comparison of PET performance—Siemens Biograph mCT and mMR
mMR | mCT | |||||
|---|---|---|---|---|---|---|
OSEM | PSF | OSEM | PSF | TOF | PSF + TOF | |
Inner diameter (mm) | ||||||
10 | 36.1 | 39.2 | 35.1 | 41.4 | 36.2 | 48.2 |
13 | 62.1 | 70.2 | 56.7 | 68.8 | 57.1 | 70.3 |
17 | 73.9 | 79.2 | 64.3 | 72.5 | 67.7 | 74.3 |
22 | 80.5 | 83.0 | 74.2 | 78.3 | 76.7 | 80.7 |
Mean (hot spheres) | 63.1 | 67.9 | 57.6 | 65.2 | 59.4 | 68.4 |
28 | 60.9 | 60.5 | 71.7 | 71.3 | 79.1 | 80.1 |
37 | 67.3 | 67.7 | 77.6 | 77.5 | 84.9 | 85.5 |
Mean (cold spheres) | 64.1 | 64.1 | 74.7 | 74.4 | 82.0 | 82.8 |