Table 1.

This table summarizes the recurrences and remissions identified with PET/CT and non-contrast CT alone. Cases were determined to be recurrences by the multidisciplinary tumor board, who had access to all imaging and clinical information. “Remission” describes cases that were not deemed to be recurrences by the multidisciplinary tumor board. All 16 true recurrences were identified with PET/CT, resulting in a sensitivity of 100%. Nine of the 16 recurrences were identified with non-contrast CT alone, so the sensitivity of non-contrast CT was 56.3%. There were 3 false positive non-contrast CT reads and 5 false positive PET/CT reports resulting in a specificity of 95.9% and 93.2%, respectively.

	Recurrence	Remission	Total
Non-contrast CT Pos.	9	3	12
Non-contrast CT Neg.	7	71	78
Total	16	74	90
Sensitivity Non-contrast CT: 56.3%
Specificity Non-contrast CT: 95.9%
	Recurrence	Remission	Total
PET/CT Pos.	16	5	21
PET/CT Neg.	0	69	69
Total	16	74	90
Sensitivity PET/CT: 100%
Specificity PET/CT: 93.2%