Table 3. Details of the nine suspected malignant characteristics of breast nodules by CEUS.

	Total	Benign	Malignant	Malignant rate (%)
High enhancement	188	108	80	42.6
Centripetal enhancement	99	28	71	71.7
Inhomogeneous enhancement	166	82	84	50.6
Filling defect	25	2	23	92
Irregular shape after enhancement	164	70	94	57.3
Volume expansion	72	8	64	88.9
Unclear boundary after contrast enhancement	134	38	96	71.6
Crab foot sign	29	1	28	96.6
Nourishing vessel sign	57	8	49	86.0

Notes.

CEUS, contrast-enhanced ultrasound.