TABLE 3

Upper and Lower PALN Detection After ¹⁸F-FDG PET (at 40 Minutes Only and After Imaging at Both 40 Minutes and 3 Hours)

¹⁸F-FDG PET scan timing	TP	TN	FP	FN	Sensitivity (%) [95% CI]	Specificity (%) [95% CI]	PPV (%) [95% CI]	NPV (%) [95% CI]	Accuracy (%) [95% CI]
40-min scan only
Upper	13	90	1	0	100	98.9	92.9	100	99
					—	[94.0–99.9]	[66.1–99.8]	—	[94.8–99.9]
Lower	30	66	1	7	81.1	98.5	96.8	90.4	92.3
					[64.8–92.0]	[92.0–99.9]	[83.3–99.9]	[81.2–96.1]	[85.4–96.6]
Both 40-min and 3-h scans
Upper	13	91	0	0	100.0	100.0	100.0	100.0	100.0
Lower	37	67	0	0	100.0	100.0	100.0	100.0	100.0
Total	50	158	0	0	100.0	100.0	100.0	100.0	100.0