Figure 3.

Images of elasticity classification: (a) score 1: the entire lesion or nearly the entire lesion was green, and the elastic strain ratio was <2.5; (b) score 2: the focus was red in the center and homogeneous elasticity in the periphery, and the elastic strain ratio was <2.5; (c) score 3: the proportions of green and red in the range of lesion were the same, and the elastic strain ratio was <2.5; (d) score 4: the entire lesion was red or little green was found inside the lesion, and the elastic strain ratio was ≥2.5; (e) score 5: the lesion and surrounding tissues were all shown in red, with or without green in the inner part, and the elastic strain ratio was far beyond 2.5.