Model Validation Among 3 Compartmental Models Based on AIC for Different ROIs
| Model | Heart | Lung | Liver | Spleen | Kidney | Pancreas | Thyroid | Parotid gland | Submandibular gland | Muscle | Bone | PT | LNM | OM |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2T4K | 200.14 (45.11) | 363.22 (62.10) | 218.03 (80.76) | 57.14 (73.46) | 154.84 (68.11) | 180.30 (122.49) | 159.20 (58.34) | 104.24 (44.56) | 48.89 (44.73) | 159.62 (95.33) | 249.25 (123.48) | −68.57 (82.82) | 211.95 (126.82) | 225.37 (161.71) |
| Irreversible 2-tissue compartment model | 203.79 (46.39) | 354.22 (71.63) | 255.19 (56.81) | 120.89 (47.19) | 197.57 (75.15) | 228.68 (83.31) | 183.05 (59.47) | 148.00 (48.08) | 112.87 (32.84) | 183.67 (84.87) | 274.47 (148.32) | −0.76 (86.49) | 229.74 (109.12) | 233.09 (158.63) |
| One-tissue compartment model | 216.64 (49.05) | 352.32 (71.62) | 310.83 (41.15) | 241.75 (69.81) | 236.64 (57.07) | 279.22 (99.15) | 273.52 (52.97) | 226.40 (79.17) | 208.13 (60.55) | 201.30 (87.36) | 275.62 (143.57) | 53.27 (89.06) | 248.55 (103.90) | 248.46 (149.12) |
AIC values are mean (SD).
ROI = region of interest.