Comparison of Methods for Phantom Acquisition
| Method | Background error (%) | Lung residual error (%) | Recovery coefficient MSE |
| LE 113 TEW | −5.0 ± 3.0 | 58.5 ± 9.7 | 0.26 ± 0.24 |
| HE 113, 208 TEW | −8.6 ± 2.9 | 67.9 ± 5.1 | 0.35 ± 0.25 |
| HE 208 TEW | −4.5 ± 2.1 | 68.4 ± 6.3 | 0.35 ± 0.20 |
| HE 208 DEW | −8.3 ± 2.7 | 70.0 ± 7.5 | 0.43 ± 0.20 |
MSE = mean squared error; LE and HE = low and high energy, respectively; 113 and 208 = 113 and 208 keV, respectively; TEW and DEW = triple- and dual-energy windows, respectively.
Data are mean ± SD.