SPECT Detection Ratios and Tumor-to-Normal Pancreas (T/N) Ratios Calculated by ARG Analysis
| Condition | Hamster | Size (mm) | Detection by SPECT | T/N ratio |
| Adenocarcinoma | 4 | 2.0 | ND | 5.1 |
| 5 | 3.0 | Detected | 4.0 | |
| 4.4 | Detected | 5.2 | ||
| 6 | 3.0 | Detected | 4.5 | |
| 5.0 | Detected | 6.7 | ||
| 7 | 2.0 | ND | 4.5 | |
| 9 | 3.5 | ND | 3.5 | |
| 5.0 | Detected | 4.2 | ||
| 10 | 8.0 | Detected | 3.7 | |
| Atypical hyperplasia | 3 | 1.5 | ND | 4.9 |
| 7 | 0.7 | ND | 5.4 | |
| 9 | 0.8 | ND | 2.6 | |
| 1.3 | ND | 2.7 | ||
| 10 | 0.9 | ND | 2.4 |
For adenocarcinoma and atypical hyperplasia, respective sizes (mean ± SD) were 4.0 ± 1.9 and 1.0 ± 0.3 mm; respective percentages detected by SPECT were 66.7% and 0%; and respective T/N ratios (mean ± SD) were 4.6 ± 1.0 and 3.9 ± 1.5. ND = not detected.