Table 4.
Lesion features according to their detectability in original PET90 and denoised PET45AI
| Size on CT (mm) | MV (ml) 1 | SULmax (g/ml) | ||
|---|---|---|---|---|
| Absolute detection | Long axis | Short axis | ||
| Concordant | 16 [10–24] | 10 [7–16] | 1.3 [0.6–3.2] | 4.4 [3.1–7.5] (2) |
| Discordant PET90 only | 5 [5–6] | 4 [3–6] | 0.8 [0.6–1.2] | 2.1 [1.5–2.6] |
| Discordant PET45AI only | NA3 | NA | 1.2 [0.6–2.9] | 3.0 [2.5–3.3] |
| Preferred serie for detection | ||||
| No | 17 [11–25] | 11 [7–17] | 1.5 [0.8–3.8] | 4.6 [3.1–7.7] (2) |
| PET90 | 9 [7–12] | 7 [5–9] | 1.1 [0.7–1.8] | 2.7 [2.0–3.6] (2) |
| PET45AI | 8 [5–22] | 6 [4–16] | 1.5 [0.9–2.7] | 2.2 [1.6–2.8] (2) |
All measures are displayed as median [interquartile range]; 1 MV, metabolic volume. Note that metabolic volumes of small lesions and with low contrast-to-background ratios are less accurate. 2 of original PET90; 3 NA, not assessable (no measurable CT lesion)