Table 3 Recovered activity in the liver background. Recovered activity concentrations are compared to measured values
From: Phantom validation of quantitative Y-90 PET/CT-based dosimetry in liver radioembolization
Liver Background | True activity concentration (MBq mL−1) | Recovered concentration (MBq mL−1) Average, [1st–3rd quartile] [% deviation] | Homogeneity Index | Reconstruction parameters | Scan Time (min) |
|---|---|---|---|---|---|
1 | 0.89 ± 0.03 | 0.76 [0.430–0.920] [− 14.6%] | 0.84 | 2i, 15s | 15 |
4 | 0.41 ± 0.01 | 0.37 [0.160–0.460][− 9.8%] | 0.94 | 2i, 15s | 15 |
5 | 0.31 ± 0.01 | 0.26 [0.140–0.330] [− 16.1%] | 0.91 | 2i, 15s | 30 |
6 | 0.24 ± 0.01 | 0.19 [0.090–0.240] [− 20.8%] | 0.90 | 2i, 15s | 30 |
12 | 0.051 ± 0.002 | 0.021 [0.004–0.030][− 58.8%] | 2.80 | 2i, 15s | 30 |