Table 2 Recovered activity in the tumor insert before and after compensation for partial volume effect through recovery coefficients. Recovered activity concentrations are compared to measured values
From: Phantom validation of quantitative Y-90 PET/CT-based dosimetry in liver radioembolization
Day of scan | True activity concentration (MBq mL−1) | Average recovered concentration (MBq mL−1) [1st–3rd quartile] (no recovery coefficient applied) | Average recovered concentration (MBq mL−1) [% deviation] (recovery coefficient applied) | Homogeneity Index | Reconstruction parameters | Scan Time (min) |
|---|---|---|---|---|---|---|
1 | 5.50 ± 0.16 | 4.30 [3.24–5.36] | 5.3 [− 3.6%] | 0.34 | 2i, 15s | 15 |
4 | 2.52 ± 0.08 | 1.95 [1.4–2.51] | 2.41 [− 4.4%] | 0.42 | 2i, 15s | 15 |
5 | 1.94 ± 0.06 | 1.51 [1.12–1.88] | 1.86 [− 4.1%] | 0.36 | 2i, 15s | 30 |
6 | 1.49 ± 0.04 | 1.03 [0.72–1.34] | 1.27 [− 14.7%] | 0.42 | 2i, 15s | 30 |
12 | 0.31 ± 0.01 | 0.22 [0.076–0.294] | 0.27 [− 12.4%] | 1.01 | 2i, 15s | 30 |