Table 3 (a) Spillover ratios (SOR) for the water- and air-filled regions of the IQ phantom, (b) uniformity measurements for the IQ phantom for the three scanner configurations, presented in NEMA NU 4-2008 format
(a) Region | Scanner configuration | SOR | %STD |
|---|---|---|---|
Water-filled cylinder | Simultaneous PET/MR | 0.28 | 8.2 |
PET inside the MR bore | 0.28 | 7.7 | |
PET outside the MR bore | 0.24 | 9.2 | |
Air-filled cylinder | Simultaneous PET/MR | 0.35 | 7.2 |
PET inside the MR bore | 0.36 | 7.1 | |
PET outside the MR bore | 0.35 | 8.5 |
(b) Scanner configuration | Mean (Uniformity) | Maximum (Uniformity) | Minimum (Uniformity) | %STD |
|---|---|---|---|---|
Simultaneous PET/MR | 0.0071 | 0.0084 | 0.0052 | 4.2 |
PET inside the MR bore | 0.0070 | 0.0081 | 0.0054 | 4.1 |
PET outside the MR bore | 0.0042 | 0.0049 | 0.0033 | 4.3 |