Table 3 Variables used in the study
From: Optimisation of quantitative lung SPECT applied to mild COPD: a software phantom simulation study
Values | |
|---|---|
Acquisition | |
Activity levels | 25 and 125 MBq |
Collimators | LEHR and LEGP |
Reconstruction | |
Number of iterations | 2, 4, 6,…, 20 with 16 subsets, i.e. 32 to 320 updates |
Cutoff frequencies | 0.4, 0.5, 0.6, 0.7 cm−1 and no filtering |
Analysis | |
Kernel edge lengths | 1.0, 1.7, 2.3 and 3.0 cm (i.e. 3, 5, 7 and 9 voxels) |
Volume of analysis | The whole lung and the reduced lung |