Table 2.
Summary of conventional FET PET parameters.
| Patient cohort | All | Subgroup I (Stand-alone PET) | Subgroup II (Hybrid PET/MR) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| IDH wt | IDH mut | p | IDH wt | IDH mut | p | IDH wt | IDH mut | p | |
| TBRmean ± SD | 2.2 ± 0.3 | 2.1 ± 0.5 | 0.25 | 2.2 ± 0.3 | 2.3 ± 0.5 | 0.02 | 2.3 ± 0.5 | 1.9 ± 0.2 | 0.13 |
| TBRmax ± SD | 4.1 ± 1.2 | 3.9 ± 1.3 | 0.43 | 4.1 ± 1.1 | 4.3 ± 1.4 | 0.35 | 4.2 ± 1.4 | 3.3 ± 1.0 | 0.41 |
| Slope [SUV/h] ± SD | −0.3 ± 0.5 | 0.3 ± 0.4 | 0.40 | −0.2 ± 0.5 | 0.2 ± 0.5 | 0.55 | −0.4 ± 0.6 | 0.3 ± 0.3 | 0.01 |
| TTP [min] | 28.2 ± 10.3 | 37.3 ± 7.4 | 0.01 | 28.0 ± 9.6 | 39.2 ± 7.7 | 0.40 | 28.7 ± 12.2 | 34.8 ± 6.5 | <0.01 |
TBR: tumor-to brain ratio; TTP: time to peak.