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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