Table 5. New and old TI-RADS classifications compared with pathological results.

Pathological results	Old TI-RADS 4a4b4c	New TI-RADS by CDFI 34a4b4c5	New TI-RADS by SMI 34a4b4c5	New TI-RADS by CEUS 34a4b4c5	New TI-RADS by CEUS + SMI 34a4b4c5
Benign nodules	3,140	1,021,400	237,500	293,210	217,610
Malignant nodules	24,142	421,591	5,912,122	3,421,102	1,221,142

TI-RADS, Thyroid Imaging Reporting and Data System; CDFI, color Doppler imaging; SMI, superb micro-vascular imaging; CEUS, contrast-enhanced ultrasound.