Table 2.

True positive, true negative, false positive, false negative, accuracy, sensitivity, and specificity of PET/CT for the lesions in supraglottic, glottic, subglottic, cartilage and lymph node regions.

PET/CT		True positive	True negative	False positive	False negative	Accuracy (%)	Sensitivity (%)	Specificity (%)
Supraglottic	E	5	12	0	0	100	100	100
	AE	6	11	0	0	100	100	100
	VB	7	10	0	0	100	100	100
Glottic		12	5	0	0	100	100	100
Subglottic		5	12	0	0	100	100	100
Lymph node		2	14	1	0	94	100	93

E – epiglottis; AEF – aryepiglottic fold; BV – ventricular band.