iPET Reference Parameters, Lesion-Based Parameters, DTTV Parameters, and First-Order Heterogeneity Measures, Part 1
| iPET | All patients (n = 36) | Responders (n = 30) | Nonresponders (n = 6) | P* |
|---|---|---|---|---|
| Reference tissue | ||||
| SUVmax liver | 0.011 | |||
| Mean (SD) | 5.8 (1.8) | 6.1 (1.8) | 4.2 (1.2) | |
| Minimum–maximum | 2.8–11.2 | 3.6–11.2 | 2.8–6.4 | |
| SUVmax spleen | 0.0085 | |||
| Mean (SD) | 19.4 (10.6) | 21.2 (10.7) | 10.6 (3.8) | |
| Minimum–maximum | 4.3–49.1 | 7.3–49.1 | 4.3–14.6 | |
| Lesion based | ||||
| Mean SUVmax | 0.048 | |||
| Mean (SD) | 34.3 (19.4) | 37 (20.2) | 21.2 (6) | |
| Minimum–maximum | 6.8–93.1 | 6.8–93.1 | 12.4–29.9 | |
| Mean SUVmax T/L | 0.57 | |||
| Mean (SD) | 6.1 (3.2) | 6.3 (3.5) | 5.2 (1.4) | |
| Minimum–maximum | 0.9–17.4 | 0.9–17.4 | 2.9–6.8 | |
| Mean SUVmax T/S | 0.92 | |||
| Mean (SD) | 2.1 (1.2) | 2.1 (1.3) | 2.2 (0.9) | |
| Minimum–maximum | 0.1–6.1 | 0.1–6.1 | 1.5–3.9 |
* P value.
† Measured in cubic centimeters.
DTTV SUVmean liver = SUVmean in segmented volume obtained with liver as threshold; DTTV SUVmean spleen = SUVmean in segmented volume obtained with spleen as threshold; DTTV liver = DTTV obtained with liver as threshold; DTTV spleen = DTTV obtained with spleen as threshold; DTTV SUVmean liver = DTTV SUVmean obtained with liver as threshold; DTTV SUVmean spleen = DTTV SUVmean obtained with spleen as threshold; CoV = coefficient of variation.
Wilcoxon rank sum test P values are shown.