The value of color doppler ultrasonography combined with computed tomography angiography and magnetic resonance angiography in the preoperative quantification and classification of carotid body tumors: a retrospective analysis

Table 5 Carotid body tumor diagnosis thresholds for Shamblin type III

Measurement index	Diagnostic boundaries	Sensitivity (%)	Specificity (%)	Youden index (%)
Maximum diameter	3.10 cm	0.821	1.000	0.786
Volume	10.15 cm³	0.857	0.909	0.766
Horizontal distance from the upper margin to the papillae	−3.26 cm	0.911	0.545	0.456
Horizontal distance from the upper margin to the mandibular angle	0.57 cm	0.875	0.545	0.420

ISSN: 1471-2342