Table 2.

Comparison of ¹⁸F-FDG PET/STIR and for ¹⁸F-FDG PET/FSPGR for the detection of malignant lesions in children and young adults: Analysis based on 285 lesions at 2046 anatomical sites of 62 regions (nodal, extra-nodal and bone) assessed in 33 patients.

Regions		# of regions	Procedure	# of lesions	True Positive	False Positive	True Negative	False Negative	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	Accuracy (%)
Nodal	Head/Neck	5	PET/FSPGR	50	50	0	50	0	100	100	100	100	100
			PET/STIR	50	50	0	50	0	100	100	100	100	100
	Chest	11	PET/FSPGR	82	82	0	249	0	100	100	100	100	100
			PET/STIR	82	82	0	249	0	100	100	100	100	100
	Axilla	2	PET/FSPGR	18	18	0	35	0	100	100	100	100	100
			PET/STIR	18	18	0	35	0	100	100	100	100	100
	Abdominal	7	PET/FSPGR	30	30	0	177	0	100	100	100	100	100
			PET/STIR	30	30	0	177	0	100	100	100	100	100
	Pelvic	8	PET/FSPGR	25	24	1	200	0	100	99.5	96.0	100	99.6
			PET/STIR	25	24	1	200	0	100	99.5	96.0	100	99.6
Extra-nodal		10	PET/FSPGR	23	22	1	266	1	95.7	99.6	95.7	99.6	99.3
			PET/STIR	23	22	1	266	1	95.7	99.6	95.7	99.6	99.3
Bone		19	PET/FSPGR	58	57	1	402	1	98.3	99.8	98.3	99.8	99.6
			PET/STIR	57	57	0	403	1	98.3	100	100	99.8	99.8
Sum of all regions		62	PET/FSPGR	286	283	3	1380	2	99.3	99.8	99.0	99.9	99.7
			PET/STIR	285	283	2	1381	2	99.3	99.9	99.3	99.9	99.8

PPV: Positive Predictive Value, NPV: Negative Predictive Value