Combining PET and VDT
| Group | Result | Benign (n) | Malignant (n) | Cancer rate (%) |
| A | Both PET and VDT negative | 28 | 2 | 7 |
| B* | PET and VDT differed | 6 | 8 | 57 |
| C | Both PET and VDT positive | 0 | 10 | 100 |
↵* The best cut-off value (ie, the best combination of sensitivity and specificity).
PET, positron emission tomography; VDT, volume doubling time.