Contrast-enhanced ultrasound improved performance of breast imaging reporting and data system evaluation of critical breast lesions

Table 3 Enhancement patterns of invasive malignant tumors classified as breast lesions and breast imaging reporting and data system S 4A (false negative lesions)

No.	Enhancement patterns
	Time	Intensity	Scope after enhancement	Direction	Craw-like pattern	Nourishing vessel	Shape after enhancement
1	Rapid	Hyper	Equal	Complex	Absent	Absent	Regular
2	Synchronous	Iso	Equal	Complex	Absent	Absent	Irregular
3	Rapid	Hyper	Smaller	Centripetal	Absent	Absent	Regular
4	Rapid	Hyper	Equal	Complex	Absent	Absent	Regular
5	Rapid	Hyper	Equal	Centripetal	Absent	Absent	Regular
6	Rapid	Hyper	Larger	Complex	Absent	Present	Regular
7	Rapid	Hyper	Larger	Complex	Absent	Absent	Irregular
8	Synchronous	Hyper	Equal	Complex	Absent	Absent	Regular
9	Slow	Hypo	Equal	Centripetal	Absent	Absent	Regular
10	Rapid	Hyper	Smaller	Complex	Absent	Present	Irregular
11	Slow	Hypo	Smaller	Centripetal	Absent	Absent	Regular