Table 3.

A new four-pattern score system created based on the Tsukuba score system

Scoring	Figure	Color distribution	Significance
1		The entire lesion is all green	The nodule is entirely soft. It often indicates a benign lesion
2		The green area in the lesion is larger than that in blue	The nodule is mostly soft. It may be a benign lesion
3		Almost the whole lesion is displayed in hard blue, only a little of green areas mixed in it	The nodule is mostly rigid. It may be a suspicious lesion
4		The entire lesion is all blue	The nodule is entirely rigid. It indicates a suspicious lesion usually